Dissertations / Theses on the topic 'Ovulation Induction'
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Wely, Madelon van. "Treatment regimens in ovulation induction and ovarian hyperstimulation." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/77513.
Full textMoore, Kelly Renee. "Estrus induction and maintenance of cycles in gilts with PG-600 and boar exposure." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4937.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 31, 2007) Includes bibliographical references.
LONGELIN, CHRISTINE. "Induction de l'ovulation par administration pulsatile de gnrh : six ans d'experience lilloise." Lille 2, 1991. http://www.theses.fr/1991LIL2M292.
Full textWINTZ, SOPHIE. "L'induction de l'ovulation par la gonadoliberine et ses analogues." Strasbourg 1, 1987. http://www.theses.fr/1987STR10727.
Full textGhobadi, Cyrus. "Individualizing clomiphene citrate for induction of ovulation : searching for covariates." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500091.
Full textChan, Po-heung, and 陳寶香. "Use of letrozole versus clomiphene citrate for superovulation in patients undergoing intrauterine insemination : a systematic review." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206904.
Full textpublished_or_final_version
Public Health
Master
Master of Public Health
PRADAT, ERIC. "Fentes faciales et grossesses induites : registres de malformations, outil de recherche epidemiologique." Lyon 1, 1990. http://www.theses.fr/1990LYO1M346.
Full textDELETTRE, PATRICE. "Les grossesses et accouchements plurigemellaires : a propos de 14 cas a la maternite du c.h.u. de reims (service du professeur p. wahl)." Reims, 1988. http://www.theses.fr/1988REIMM007.
Full textDELAOUSTRE, BERTRAND, and TREFFEL LAURENCE DELAOUSTRE. "Complications des inductions de l'ovulation, hors fiv : a propos de 5 cas, revue de la litterature." Lille 2, 1991. http://www.theses.fr/1991LIL2M338.
Full textALBERSAMMER, JOEL. "Nanisme hypophysaire et grossesse : induction de l'ovulation et grossesse chez une femme presentant une insuffisance somatotrope et gonadotrope : a propos d'une observation." Saint-Etienne, 1988. http://www.theses.fr/1988STET6068.
Full textDEVAUX, HERVE. "Les inducteurs d'ovulation : le citrate de clomifene ; pharmacocinetique des isomeres cis et trans." Strasbourg 1, 1993. http://www.theses.fr/1993STR15090.
Full textPerry, George A. "Induction of cycling status and effect of follicle size on fertility in postpartum beef cows /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3091956.
Full textDean, Matthew. "Characteristics of subordinate follicles following removal of the dominant follicle induction of selection /." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10696.
Full textTitle from document title page. Document formatted into pages; contains vi, 56 p. : ill. Includes abstract. Includes bibliographical references (p. 45-56).
MAKHMAKHI, SALIMA. "Thromboses veineuses profondes compliquant les grossesses induites : a propos de 7 observations." Lyon 1, 1989. http://www.theses.fr/1989LYO1M414.
Full textGOULON, WANNER VERONIQUE. "Profil hormonal et induction d'ovulation lors des fecondations in vitro : etude prospective realisee sur 172 stimulations, a l'hopital la grave." Toulouse 3, 1988. http://www.theses.fr/1988TOU31218.
Full textIngwerson, Jennifer Ann. "Induction of ovulation and LH response in cyclic mares treated with gonadorelin diacetate tetrahydrate." [Ames, Iowa : Iowa State University], 2007.
Find full textJackson, Leslie M. "Pheromonal induction of estrus and ovulation in the gray short-tailed opossum (Monodelphis domestica) /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488204276533023.
Full textLOMBART, VALERIE. "Bilan et therapeutiques actuelles en fecondation in vitro." Lille 2, 1997. http://www.theses.fr/1997LIL2P041.
Full textBLANCHARD, CHAMARD BENEDICTE. "Le syndrome de de morsier - kallmann : possibilite de stimulation de l'ovulation par la fsh pure : a propos d'un cas." Nantes, 1989. http://www.theses.fr/1989NANT084M.
Full textMcFaul, Peter Bertram. "Ovulation induction in patients with clomiphene resistant polycystic ovary syndrome using pure follicle stimulating hormone." Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335940.
Full textBauer, Rosemary Aileen. "Priming with oral progestin before ovulation induction facilitates ovarian function in the cat (Felis catus)." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7667.
Full textThesis research directed by: Dept. of Animal and Avian Sciences. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
GILLIOT, CHARLES. "Induction de l'ovulation par h. M. G. -h. C. G. : etude retrospective a partir de 42 cas." Angers, 1988. http://www.theses.fr/1988ANGE1006.
Full textCavagna, Felipe Andreotta. "Estimulação ovariana controlada para criopreservação de oócitos em pacientes com câncer de mama." Botucatu, 2017. http://hdl.handle.net/11449/151029.
Full textResumo: O câncer de mama é uma doença maligna relativamente comum em mulheres adultas jovens, justificando a preocupação com a potencial toxicidade gonadal relacionada à quimioterapia. É importante considerar o encaminhamento precoce de pacientes jovens com câncer de mama que tenham desejos reprodutivos para especialistas, a fim de discutir sobre a preservação da fertilidade. A criopreservação de embriões ou de oócitos estão entre os principais métodos à disposição, e para conseguir isso, estimulação ovariana controlada (EOC) é o primeiro passo a ser considerado. O presente estudo tem como objetivo apresentar protocolo de estimulação ovariana em para preservação da fertilidade em pacientes com câncer de mama. De novembro de 2014 a dezembro de 2016, 109 pacientes com câncer de mama com menos de 40 anos de idade foram selecionadas para preservar seu potencial reprodutivo. Elas foram divididas de acordo com a fase do ciclo menstrual em que o estímulo ovariano foi iniciado: fase folicular inicial, fase folicular tardia e fase lútea. Para reduzir o tempo necessário da obtenção dos oócitos, este estudo utilizou o princípio do início aleatório, no qual a EOC pode ser iniciada durante qualquer período do ciclo menstrual sem consequências negativas. O letrozol foi utilizado durante toda a estimulação para diminuir as concentrações de estradiol, independentemente da imunohistoquímica tumoral. Na presença de tumores positivos ao estradiol, e indicação de quimioterapia neoadjuvante, o tamoxi... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Breast cancer is a relatively common malignancy in young adult women, justifying the concern about the potential gonadal toxicity related to chemotherapy. It is important to consider early referral of young breast cancer patients with reproductive desires to fertility specialists, in order to discuss the fertility preservation. Embryos or oocytes cryopreservation are among the main methods available, and to achieve that, controlled ovarian stimulation (COS) is the first step to be considered. From November 2014 to December 2016, 109 breast cancers patients under 40 years were enrolled to preserve their reproductive potential. They were divided according to the menstrual cycle status in: initial follicular phase, late follicular phase and luteal phase. In order to reduce the time necessary to obtain the oocytes, this study used the principle of random start, in which the COS can be initiated during any period of the menstrual cycle without negative consequences. Letrozole was used during all stimulation to reduce estradiol concentrations, regardless of tumor immunohistochemistry. In the presence of estradiol positive tumors, and indication of neoadjuvant chemotherapy, tamoxifen was administerd as an additional protective measure. A GnRH agonist was used to trigger ovulation, in order to mitigate the risk of ovarian hyperstimulation syndrome. The following parameters were analyzed: age, day of COS start, number of days required to COS, total FSH dosage, estradiol levels at fi... (Complete abstract click electronic access below)
Mestre
Fourie, Christle. "Effects of clomiphene citrate on the expression of kisspeptin dynorphin A and neurokinin B in female Sprague-Dawley rats." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/61684.
Full textDissertation (MSc)--University of Pretoria, 2016.
Physiology
MSc
Unrestricted
Cote, Fabienne. "Induction of prostaglandin endoperoxide synthase 2 in the follicles of equine chorionic gonadotropinhuman chorionic gonadotropin treated prepubertal gilts." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33741.
Full textChasles, Manon. "Induction d'une maturation sexuelle précoce chez la chevrette par une exposition prépubertaire au mâle." Thesis, Tours, 2017. http://www.theses.fr/2017TOUR4044/document.
Full textIn rodents, social factors are known to modulate the pubertal transition. Hence, young female mice exposed to adult male exhibit an earlier vaginal opening than young females isolated from male. The aim of my thesis was to characterize the consequences of a precocious exposure to male in another specie, goats. Goats are seasonal breeders and due to their size the fine study of endocrine secretions is easier than in rodents. Our results highlighted that an early exposure to sexually active bucks induces a precocious puberty in young female goats. The first ovulation can be induced as early as 3.5 months old, following this induced first ovulation, goats remain cycling regularly. Females precociously exposed to bucks also exhibit an acceleration of the genital tract maturation. The level of sexual activity of the male is a crucial criteria to induce a precocious puberty in goats as exposure to castrated bucks had no effect on the age at puberty. Moreover, all females exposed to intact bucks ovulated for the first time within a month after buck started to exhibit sexual behaviors. This work revealed, in goats, a crucial role of the social environment on the regulation of sexual maturation. More precisely, it highlights that exposure to bucks is highly efficient to reactivate precociously the gonadotrope axis of youg immature goats
Cavagna, Felipe Andreotta [UNESP]. "Estimulação ovariana controlada para criopreservação de oócitos em pacientes com câncer de mama." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151029.
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O câncer de mama é uma doença maligna relativamente comum em mulheres adultas jovens, justificando a preocupação com a potencial toxicidade gonadal relacionada à quimioterapia. É importante considerar o encaminhamento precoce de pacientes jovens com câncer de mama que tenham desejos reprodutivos para especialistas, a fim de discutir sobre a preservação da fertilidade. A criopreservação de embriões ou de oócitos estão entre os principais métodos à disposição, e para conseguir isso, estimulação ovariana controlada (EOC) é o primeiro passo a ser considerado. O presente estudo tem como objetivo apresentar protocolo de estimulação ovariana em para preservação da fertilidade em pacientes com câncer de mama. De novembro de 2014 a dezembro de 2016, 109 pacientes com câncer de mama com menos de 40 anos de idade foram selecionadas para preservar seu potencial reprodutivo. Elas foram divididas de acordo com a fase do ciclo menstrual em que o estímulo ovariano foi iniciado: fase folicular inicial, fase folicular tardia e fase lútea. Para reduzir o tempo necessário da obtenção dos oócitos, este estudo utilizou o princípio do início aleatório, no qual a EOC pode ser iniciada durante qualquer período do ciclo menstrual sem consequências negativas. O letrozol foi utilizado durante toda a estimulação para diminuir as concentrações de estradiol, independentemente da imunohistoquímica tumoral. Na presença de tumores positivos ao estradiol, e indicação de quimioterapia neoadjuvante, o tamoxifeno foi utilizado como uma medida de proteção adicional. Um agonista do GnRH foi utilizado para desencadear a maturação folicular final, diminuindo o risco de síndrome de hiperestimulação ovariana. Foram analisados os seguintes parâmetros: idade das pacientes, dia de início da EOC, número de dias de EOC, dose total de FSH, níveis de estradiol no dia de maturação folicular final, número de oócitos coletados e número de oócitos vitrificados. A idade média dos pacientes foi de 31,27 ± 4,22 anos. A duração média da EOC foi de 10,0 ± 1,39 dias. O número médio de oócitos coletados foi de 11,62 ± 7,96 e o número médio de oócitos vitrificados foi de 9,60 ± 6,87. A concentração média de estradiol no dia do desencadeamento da ovulação foi de 706,30 ± 450,48 pg / mL, e a dose média de FSH administrada foi 2610,00 ± 716,51 UI. Ao comparar os resultados de acordo com a fase do ciclo no qual a EOC foi iniciada, não houve diferenças significativas no número de oócitos colhidos e vitrificados, duração da estimulação ovariana e dos níveis de estradiol no dia do desencadeamento da ovulação. Observou-se uma diminuição estatisticamente significativa da dose total de FSH administrada nos grupos que iniciaram a EOC na fase folicular tardia e na fase lútea, quando comparada com a fase folicular inicial. Esses resultados sugerem que a criopreservação de oócitos ou embriões com um protocolo específico para pacientes com câncer de mama, é eficaz e pode ser oferecida a mulheres jovens submetidas a tratamento citotóxico que têm preocupações relacionadas ao seu futuro reprodutivo.
Breast cancer is a relatively common malignancy in young adult women, justifying the concern about the potential gonadal toxicity related to chemotherapy. It is important to consider early referral of young breast cancer patients with reproductive desires to fertility specialists, in order to discuss the fertility preservation. Embryos or oocytes cryopreservation are among the main methods available, and to achieve that, controlled ovarian stimulation (COS) is the first step to be considered. From November 2014 to December 2016, 109 breast cancers patients under 40 years were enrolled to preserve their reproductive potential. They were divided according to the menstrual cycle status in: initial follicular phase, late follicular phase and luteal phase. In order to reduce the time necessary to obtain the oocytes, this study used the principle of random start, in which the COS can be initiated during any period of the menstrual cycle without negative consequences. Letrozole was used during all stimulation to reduce estradiol concentrations, regardless of tumor immunohistochemistry. In the presence of estradiol positive tumors, and indication of neoadjuvant chemotherapy, tamoxifen was administerd as an additional protective measure. A GnRH agonist was used to trigger ovulation, in order to mitigate the risk of ovarian hyperstimulation syndrome. The following parameters were analyzed: age, day of COS start, number of days required to COS, total FSH dosage, estradiol levels at final follicular maturation day, number of collected oocytes and number of vitrified oocytes. The mean age of patients was 31.27±4.22 years. The average duration of COS was 10.0±1.39 days. The mean number of collected oocytes was 11.62±7.96 and the mean number of vitrified oocytes was 9.60±6.87. The mean estradiol concentration on the day of the trigger was 706.30±450.48 pg/mL, and the mean dose of FSH administered was 2610.00±716.51 IU. When comparing the outcomes according to the phase of the cycle in which COS was commenced, there were no significant differences in the number of oocytes collected and vitrified, ovarian stimulation length and estradiol levels on the day of the trigger. It was observed a statistically decrease of the total FSH dose administered in the groups starting COS in the late follicular phase and in the luteal phase, when compared to the initial follicular phase These results suggest that oocyte or embryos cryopreservation with a specific protocol for breast cancer patients, is effective, safe, and may be offered to young women undergoing cytotoxic treatment who have concerns related to their reproductive future.
Ulguim, Rafael da Rosa. "Inseminação artificial em tempo fixo em leitoas e porcas desmamadas com o uso de hormonio luteinizante suíno através de diferentes vias de aplicação." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108163.
Full textThe reduction in the number of semen doses used per sow served through of a single fixed-time insemination (FTAI) allows sperm cell reduction per sow served, optimising the artificial insemination (AI) programs. Considering the large variability in the interval between oestrus onset and ovulation the ovulation time, the FTAI protocols require hormones to synchronise ovulation. Thus, the aim of this study was to evaluate the use of different dosages of porcine luteinising hormone (pLH) given at oestrous onset in gilts and sows through different routes of application to synchronise the ovulation and to define a protocol of FTAI. The first study evaluated the effect of different dosages of pLH applied at oestrous onset by intramuscular route (i.m.) in gilts on interval between oestrus onset to ovulation. In this way three treatments were performed: control - without pLH application at oestrous onset; pLH2.5 - use of 2.5 mg of pLH given at oestrous onset by i.m. route; pLH5 - use of 5 mg of pLH given at oestrus onset by i.m. route. Differences in the interval onset of oestrus to ovulation (IOEO) among treatments (P>0.05) were not observed. Similarly the frequency distribution of IOEO did not differ among treatments (P>0.05). In a second study, was evaluated an alternative route of pLH application and the reproductive performance of gilts submitted to a single FTAI. Thus, the following treatments were performed: control – without pLH application at oestrous onset and use of multiple AI; VS2.5FTAI – use of 2.5 mg of pLH injected at oestrus onset by vulvar submucosal route (v.s) and use of a single FTAI 16 h later; IM5FTAI – use of 5 mg of pLH injected at oestrous onset by i.m. and use of a single FTAI 16 h later. On average differences in the IOEO among treatments (P<0.05) were observed and more VS2.5FTAI gilts ovulated up to 24 h after oestrous onset in relation to control (P<0.05). Adjusted farrowing rate (AFR) did not differ among treatments (P>0.05), however the total piglets born (TPB) was lower in the group VS2.5FTAI compared to control (P<0.05). In order to adjust the FTAI protocol in gilts for a practical use in the routine of the farm and to evaluate the use of pLH by v.s. route in weaned sows, the third study was conducted through two experiments. In gilts two treatments were performed: control-G - without pLH injection at oestrous onset and use of multiple AI during the oestrous; FTAI-G – 2.5 mg pLH applied by v.s. route at oestrous onset and use of a single FTAI 12 h later. The IOEO was shorter in the FTAI-G gilts compared to control-G (P<0.05), but the frequency distribution of IOEO did not differ between treatment (P>0.05). The AFR was lower to FTAI-G group compared to control-G (P<0.05). Differences on TPB between treatments were not observed (P>0.05). In the weaned sows three treatments were performed: control-S - without pLH application at oestrous onset and use of multiple inseminations; FTAI-NH - no hormone application and a single FTAI 24h after the onset of oestrus detection; FTAI-pLH - use of 2.5 mg pLH at oestrous onset by v.s. route and use of a single FTAI 24 h later. The results of this study did not insure difference on the AFR and TPB among treatments (P>0.05).
Siebert, T. I. "A study of different clinical and biochemical parameters in polycystic ovary syndrome affecting ovulation induction outcome and fertility potential." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/4076.
Full textChapter 1 presents a literature study on the diagnostic debate of PCOS. The literature study includes a discussion of the recent Rotterdam consensus statement regarding the diagnosis of PCOS. This is followed by a discussion on the essential work-up of the patient presenting with PCOS. Finally, chapter 1 presents a discussion on the complexity of the different variations in women presenting with PCOS. Chapter 2 is a literature review on ovulation induction methods in patients who present with PCOS. This literature study puts special emphasis on the different available methods used for ovulation induction in women with PCOS and the profounding effect weight loss will have in managing these patients. This chapter also addresses the use of newer agents, like aromatase inhibitors (Letrozole), and the current role of each of these agents in ovulation induction protocols. Chapter 3 is a literature overview on the effect of Metformin in Clomiphene-resistant PCOS women. The inclusion criteria of this review was all prospective randomized trials where Metformin was added for ovulation in the Clomiphene-resistant PCOS patient. The data is presented as a metaanalysis. Chapter 4 is a prospective randomise control trial to evaluate the benefit of metformin if added to Clomiphene in a primary ovulation induction protocol in comparison to Clomiphene alone. This chapter also evaluates all factors influencing ovulation outcome. Finally in the discussion section all the recent studies published addressing this topic were reviewed. Chapter 5 is a literature review to evaluate the classification systems for semen parameters and the in vivo fertility potential. This data is also used to establish fertility/subfertility thresholds for semen parameters. This chapter also presents the results of a prospective and retrospective study of the semen analysis of the partners of women with PCOS. We believe that this population presents the best reference group to study the semen profile of the general male population. Chapter 6 is a summary of the results of these studies and serves as an evidence based approach for ovulation induction in women with PCOS.
Makkar, Guneet. "Role of cytokines in reduced implantation following excessive ovarian stimulation." Thesis, Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36368313.
Full textArroja, Maria Raquel Lameira Serralha de Matos. "Estudo comparativo da eficácia da administração da hormona gonadotrofina coriónica humana (hCG) e da triptorrelina como agentes indutores da ovulação em éguas em Portugal." Master's thesis, Universidade de Évora, 2022. http://hdl.handle.net/10174/31367.
Full textBastide, Laurence. "Valeur de la courbe de température basale dans l'appréciation du moment de l'ovulation lors de l'induction par la séquence HMG/HCG en dehors de la FIV : à propos de 11 cas suivis de grossesse par IAD." Bordeaux 2, 1988. http://www.theses.fr/1988BOR25038.
Full textLiu, Yunao, and 劉蘊奡. "Human endometrial gene expression profiling and receptivity in patients undergoing in vitro fertilization (IVF) treatment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43085404.
Full textOliveira, Maria Emília Franco [UNESP]. "Efeito da adaministração do LH ao final do tratamento superovulatório na taxa de ovulação e produção de embriões em ovelhas da raça Santa Inês." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/98187.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Foram realizados 20 programas de superovulação e colheita de embriões em ovelhas Santa Inês, com objetivo de testar a hipótese que a adição de LH ao final do protocolo de superovulação causa incremento nas taxas de ovulação e de produção de embriões. Para tanto, o experimento foi delineado em cross-over, sendo o estro sincronizado com CIDR™ por 14 dias. No D7, substituiu-se o implante por um novo, e administrou-se 37,5 μg de d-cloprostenol, IM. Para superestimulação, 256 mg de FSHp foram administradas em 8 doses decrescentes, iniciando no D12. No D14, as fêmeas receberam 200 UI de eCG e 37,5 μg de d-cloprostenol. No grupo controle (G-C) a taxa FSH/LH foi constante, enquanto no G-LH o protocolo preconizava o acrescido de 7,5 mg de LH, administrado 24 h após a retirada do implante (D15). As fêmeas foram inseminadas com sêmen congelado, por laparoscopia, as 42 e 48 h após a retirada do implante, concomitantemente, as estruturas ovarianas foram avaliadas. No D21, os embriões foram cirurgicamente colhidos e avaliados. Os resultados demonstraram que o LH administrado ao final do tratamento superovulatório não incrementou de maneira significativa a taxa de ovulação e o número de embriões viáveis (78,7% ± 22,72 e 3,77 ± 4,29, respectivamente, G-C; 84,75 ± 10,13 e 4,22 ± 5,19, G-LH). Quanto ao período das ovulações, observou-se grande distribuição nos grupos, sendo possivelmente correlacionado ao grande número de estruturas não fecundadas e embriões degenerados encontrados. A ausência de diferença estatística no número de corpos lúteos, de embriões recuperados e viáveis pode ser associada à grande variabilidade individual.
Twenty superovulation programs and embryos recovery were accomplished in Santa Inês sheep, with objective to test the hypothesis that addition of LH at the end of the superovulatory regimen causes an increase in the ovulation rate and of embryos production. For so much, the experiment was delineated in cross-over, being the estrus synchronized with CIDR, for 14 days. On D7, the implant was substituted by a new one, and 37.5 μg of d-cloprostenol were administered. Then, 256 mg of FSHp were administered in 8 decreasing doses, starting on D12. On D14, all females received 200 IU of eCG and 37.5 μg of d-cloprostenol. In control group (G-C), the FSH/LH ratio was constant, while in G-LH 7.5 mg of LH, administered 24 h after implant withdrawal (D15). The laparoscopic inseminations occurred 42 and 48 h after implant withdrawal, concomitantly, the evaluated ovarian structures. On D21, the embryos were surgically collected and evaluated. Overall, the results showed that LH administration at the end of the FSH treatment did not significant increase the ovulation rate and number of viable embryos (78.7% ± 22.72 and 3.77 ± 4.29, respectively, G-C; 84.76 ± 10.14 and 4.22 ± 5.22, G-LH). For the period of the ovulations, a great distribution was observed inside of the groups, being correlated possibly to the great number of unfertilized oocytes and degenerated embryos. The no statistical difference in the number of corpus luteum, embryos recovery and viability can be associated the great individual variability.
Oliveira, Maria Emília Franco. "Efeito da adaministração do LH ao final do tratamento superovulatório na taxa de ovulação e produção de embriões em ovelhas da raça Santa Inês /." Jaboticabal : [s.n.], 2008. http://hdl.handle.net/11449/98187.
Full textBanca: Luiz Fernando de Souza Rodrigues
Banca: Paulo Henrique Franceschini
Resumo: Foram realizados 20 programas de superovulação e colheita de embriões em ovelhas Santa Inês, com objetivo de testar a hipótese que a adição de LH ao final do protocolo de superovulação causa incremento nas taxas de ovulação e de produção de embriões. Para tanto, o experimento foi delineado em cross-over, sendo o estro sincronizado com CIDR™ por 14 dias. No D7, substituiu-se o implante por um novo, e administrou-se 37,5 μg de d-cloprostenol, IM. Para superestimulação, 256 mg de FSHp foram administradas em 8 doses decrescentes, iniciando no D12. No D14, as fêmeas receberam 200 UI de eCG e 37,5 μg de d-cloprostenol. No grupo controle (G-C) a taxa FSH/LH foi constante, enquanto no G-LH o protocolo preconizava o acrescido de 7,5 mg de LH, administrado 24 h após a retirada do implante (D15). As fêmeas foram inseminadas com sêmen congelado, por laparoscopia, as 42 e 48 h após a retirada do implante, concomitantemente, as estruturas ovarianas foram avaliadas. No D21, os embriões foram cirurgicamente colhidos e avaliados. Os resultados demonstraram que o LH administrado ao final do tratamento superovulatório não incrementou de maneira significativa a taxa de ovulação e o número de embriões viáveis (78,7% ± 22,72 e 3,77 ± 4,29, respectivamente, G-C; 84,75 ± 10,13 e 4,22 ± 5,19, G-LH). Quanto ao período das ovulações, observou-se grande distribuição nos grupos, sendo possivelmente correlacionado ao grande número de estruturas não fecundadas e embriões degenerados encontrados. A ausência de diferença estatística no número de corpos lúteos, de embriões recuperados e viáveis pode ser associada à grande variabilidade individual.
Abstract: Twenty superovulation programs and embryos recovery were accomplished in Santa Inês sheep, with objective to test the hypothesis that addition of LH at the end of the superovulatory regimen causes an increase in the ovulation rate and of embryos production. For so much, the experiment was delineated in cross-over, being the estrus synchronized with CIDR, for 14 days. On D7, the implant was substituted by a new one, and 37.5 μg of d-cloprostenol were administered. Then, 256 mg of FSHp were administered in 8 decreasing doses, starting on D12. On D14, all females received 200 IU of eCG and 37.5 μg of d-cloprostenol. In control group (G-C), the FSH/LH ratio was constant, while in G-LH 7.5 mg of LH, administered 24 h after implant withdrawal (D15). The laparoscopic inseminations occurred 42 and 48 h after implant withdrawal, concomitantly, the evaluated ovarian structures. On D21, the embryos were surgically collected and evaluated. Overall, the results showed that LH administration at the end of the FSH treatment did not significant increase the ovulation rate and number of viable embryos (78.7% ± 22.72 and 3.77 ± 4.29, respectively, G-C; 84.76 ± 10.14 and 4.22 ± 5.22, G-LH). For the period of the ovulations, a great distribution was observed inside of the groups, being correlated possibly to the great number of unfertilized oocytes and degenerated embryos. The no statistical difference in the number of corpus luteum, embryos recovery and viability can be associated the great individual variability.
Mestre
Latimer, John Alexander. "Gonadotrophins and cytokines in ovarian epithelial cancer /." Title page, table of contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09MD/09mdl357.pdf.
Full textNaturil, Alfonso Carmen. "EFFECT OF FEED RESTRICTION IN A RABBIT LINE SELECTED FOR GROWTH RATE ON REPRODUCTIVE PERFORMANCE: OVULATION INDUCTION, OOCYTE QUALITY, EMBRYONARY AND FETAL LOSSES." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/73065.
Full text[ES] El objetivo general fue la caracterización reproductiva de las hembras de una línea de conejo seleccionada por velocidad de crecimiento y el efecto de distintas estrategias nutricionales (ad libitum y restringidas), con la finalidad de mejorar el rendimiento reproductivo. En el capítulo 1 se evaluó la influencia de los genotipos materno y embrionario en la supervivencia prenatal y crecimiento fetal, entre las hembras de esta línea y una línea maternal. La supervivencia prenatal, peso fetal y el peso de la placenta resultaron afectados por los genotipos tanto embrionario como materno, pero no se detectaron diferencias sobre la placenta fetal a nivel del transcriptoma ni en los niveles de progesterona e IGF-I. Por lo tanto, se puede concluir que en éstas tanto el genotipo embrionario como el materno son factores clave en su rendimiento reproductivo. El objetivo del capítulo 2 fue explorar las causas de los fallos reproductivos en estas hembras. Los resultados mostraron que las hembras que no ovularon presentaban menores niveles de LH, un mayor peso corporal y mayor concentración en sangre de leptinas y BOHB, que aquellas que había ovulado. Por ello, los fallos en ovulación detectados en estas hembras podrían estar relacionados con una reducción en los niveles de LH, consecuencia del mayor peso de estas hembras y de los incrementados niveles de leptinas. Los siguientes capítulos se enfocaron a la mejora del rendimiento reproductivo de estas hembras empleando una estrategia nutricional distinta: la ingesta ad libitum de alimento tras el periodo de crianza hasta el momento del comienzo de su vida reproductiva. La hipótesis de partida fue que estas hembras son sometidas a un régimen nutricional restringido que no es suficiente para satisfacer sus necesidades energéticas durante la reproducción, lo que causa alteraciones en su balance energético que se manifestarían en los problemas reproductivos observados. El capítulo 3 trató de determinar a través de un análisis trasncriptómico si la estrategia nutricional planteada afectaría el eje hipotalámico-hipofisario y la calidad de los ovocitos. Aunque no se encontraron diferencias en el análisis de un micrarray realizado sobre el hipotálamo-hipófisis, sí que se detectaron en la expresión génica de los ovocitos. El transcrito MSY2 mostró una menor expresión en los ovocitos de las hembras restringidas. Este gen es un regulador clave en la maduración ovocitaria, por lo tanto, cambios en la expresión de este gen podrían explicar algunos de los problemas reproductivos de estas hembras. En el capítulo 4 se estudió si las diferencias a nivel ovocitario eran heredadas por el embrión pudiendo causar la baja fertilidad de estas hembras. Aunque no se encontraron diferencias en las tasas de ovulación, recuperación embrionaria e implantación, sí que aparecieron diferencias en las pérdidas fetales y gestacionales, así como un menor crecimiento fetal en los embriones procedentes de hembras con restricción alimentaria. Por ello, concluimos que la estrategia nutricional empleada tiene unas consecuencias en el ovocito (Capítulo 3), y demostramos que estos cambios parecen continuar en el embrión, resultando en alteraciones en pérdidas gestacionales y crecimiento fetal. El capítulo final fue desarrollado para evidenciar si los efectos reproductivos y metabólicos observados en los capítulos previos se manifestaban en las hembras que se encuentran en un sistema de producción tradicional en granja. A pesar de que los resultados mostraron variaciones en los niveles circulantes de NEFAs y BOHB y de peso corporal, no se encontraron diferencias en el rendimiento reproductivo global a nivel de fertilidad, prolificidad y productividad. Los resultados obtenidos parecen indicar que a pesar de las diferencias encontradas a nivel ovocitario, embrionario y fetal, con el régimen nutricional propuesto no se logra alcanzar mejoras en la eficiencia reproductivo de las h
[CAT] L'objectiu general va ser la caracterització reproductiva de les femelles d'una línia de conill seleccionada per velocitat de creixement i l'efecte de diferents estratègies nutricionals (ad libitum i restringides), amb la finalitat de millorar el rendiment reproductiu. En el capítol 1 s'avaluà la influència dels genotipus matern i embrionari en la supervivència prenatal i el creixement fetal, entre les femelles d'aquesta línia i les de una altra línia maternal. La supervivència prenatal, el pes fetal i el pes de la placenta resultaren afectats pels genotipus embrionari i matern, però no es detectaren diferències en la placenta fetal a nivell de trascriptoma ni en els nivells de progesterona i IGF-I. Per tant, en les femelles de conill seleccionades per velocitat de creixement, tant el genotipus embrionari com el matern són factors clau en el seu rendiment reproductiu. L'objectiu del capítol 2 va ser explorar les causes de les fallades reproductives en aquestes femelles. Les femelles que no ovularen presentaren menor nivells de LH, major pes corporal i major concentració de leptines i BOHB que aquelles que sí que hi havia ovulat. Per això, les fallades d'ovulació detectades en aquestes femelles podrien estar relacionades amb la reducció en els nivells de LH, com a conseqüència del major pes d'aquestes femelles i dels incrementats nivells de leptines. Els capítols següents s'enfocaren a la millora del rendiment reproductiu d'aquestes femelles mitjançant una estratègia nutricional distinta: la ingesta ad libitum d'aliment després del període de criança i fins al moment de l'inici de la vida reproductiva. La hipòtesi de partida fiu que aquestes femelles són sotmeses a un règim nutricional restringit que no és suficient per a satisfer les seves necessitats energètiques durant la reproducció, la qual cosa provoca alteracions en el balanç energètic que podrien manifestar-se en els problemes reproductius observats. El capítol 3 tractà de determinar mitjançant un anàlisi trasncritòmic si la estratègia nutricional plantejada podria afectar l'eix hipotalàmic-hipofisiari i la qualitat dels ovòcits. Metre que no es detectaren diferències en el anàlisi del microarray realitzat en el hipotàlem-hipòfisi, sí que es detectaren en l'expressió gènica del ovòcits. El transcrit MSY2 mostrà una menor expressió en els ovòcits de les femelles restringides. Aquest gen es un regulador clau en la maduració ovocitària, per aquest motiu, canvis en la seva expressió gen podrien explicar alguns dels problemes reproductius de les femelles. En el capítol 4 s'estudià si aquestes diferències a nivell ovocitari eren heretades per l'embrió i podrien causar la baixa fertilitat d'aquestes femelles. Encara que no se trobaren diferències en les taxes d'ovulació, recuperació embrionària i implantació, sí que es trobaren diferències en les pèrdues fetals i gestacionals, així com un menor creixement fetal en els embrions de les femelles provinents d'un règim alimentari restringit. Per això concloíem que l'estratègia nutricional emprada té conseqüències en el ovòcit (Capítol 3), i demostrarem que aquest canvis pareixen continuar en l'embrió, resultant en alteracions en pèrdues gestacionals i creixement fetal. El capítol final fou desenvolupat per evidenciar si els efectes reproductius i metabòlics observats en els capítols previs eren manifestats en les femelles que es troben en un sistema productiu tradicional de granja. Tot i que el resultats mostraren variacions en els nivells circulants de NEFAs i BOHB i pes corporal, no es trobaren diferències en el rendiment reproductiu global, en termes de fertilitat, prolificitat i productivitat. Els resultats obtinguts pareixen indicar que tot i que les diferències trobades a nivell ovocitari i embrionari amb un efecte significatiu en el desenvolupament i creixement fetal, amb el règim nutricional proposat no s'aconsegueix assolir millores en
Naturil Alfonso, C. (2016). EFFECT OF FEED RESTRICTION IN A RABBIT LINE SELECTED FOR GROWTH RATE ON REPRODUCTIVE PERFORMANCE: OVULATION INDUCTION, OOCYTE QUALITY, EMBRYONARY AND FETAL LOSSES [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/73065
TESIS
Matos, Raquel Isabel Gonçalves de. "Regulação Farmacológica da Ovulação." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/4078.
Full textA regulação farmacológica da ovulação tema desta monografia, será abordada em dois tópicos principais: o primeiro aborda as terapias utilizadas na indução da ovulação e o segundo métodos farmacológicos utilizados na inibição da ovulação. A indução da ovulação é dirigida às disfunções, que promovem ciclos anovulatórios, tendo a Organização Mundial da Saúde dividido as causas da anovulação em três categorias: hipogonadismo hipogonadotrófico (WHO I), hipogonadismo normagonadotrófico (WHO II) e por último, hipogonadismo hipergonadotrófico (WHO III), ao qual a indução da ovulação não é aplicável. A metodologia de indução da ovulação vai depender da causa da anovulação. Assim sendo, o WHO I irá requerer uma terapia à base de gonadotrofinas e análogos da GnRH. Quando a disfunção é causada por uma disfunção ovárica é na maior parte das vezes causada pelo síndrome do ovário policístico, traduz a variante WHO II e, neste caso a terapia de primeira linha é o citrato de clomifeno e o letrozole e, a de segunda linha gonadotrofinas e metformina Em relação à inibição da ovulação, com a qual se pretende evitar uma gravidez, as propostas oferecidas são cada vez mais eficazes e com formulações melhoradas, de que são exemplo a substituição de etinilestradiol de algumas formulações por um estrogéneo semelhante ao estrogéneo natural, diminuindo assim os riscos associadas ao tromboembolismo conferido pelo etinilestradiol. Contraceção estroprogestativa e contraceção apenas recorrendo a progestativos encontra-se disponível hoje no mercado, com várias vias de administração e diversos efeitos terapêuticos adicionais com o intuito de responder especificamente às necessidades individuais das mulheres. This thesis’ theme, pharmacological regulation of ovulation, is going to be approached in two main topics: the first covers the therapies used to induct ovulation, and the second covers the pharmacological methods used to inhibit it. Ovulation induction is addressed to dysfunctions that promote anovulatory cycles. In this way, World Health Organization (WHO) has divided anovulation’s causes in three categories: hypogonadotropic hypogonadism (WHO I), normogonadotropic hypogonadism (WHO II) and, finally, hypogonadotropic hypogonadism (WHOIII), for which the ovulation induction can’t be applied. The inducting methodology depend on the cause of anovulation, therefore, WHO I requires a therapy based on gonadotrophins and GnRH analogues, and WHO II, which is normally caused by the ovarian polycystic ovary syndrome, has the citrate de clomifeno and the letroxzole as first-line therapy, and gonadotriphins and metformin as second-line therapy. Regarding to ovulation inhibition, which goal is to prevent pregnancy, more efficient proposals and improved formulations are offered, such as the substitution of the ethinylestradiol of some formulations for a estrogen more similar to the natural estrogen, lowering the risks of thromboembolism associated to the ethinylestrodiol. Nowadays, several estroprogestative contraception and contraception with progestogens-only are available in the market. They can be administrated by several routes and can present additional therapeutic effects to respond in a more specific way to the needs of individual women.
FRAGA, JÚNIOR Antônio Matos Fraga. "Dinâmica folicular de vacas da raça guzerá submetidas a três protocolos de sincronização da ovulação." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6222.
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This study aimed to assess the follicular dynamics of Guzerat cows treated with three protocols for synchronization of ovulation where they used vaginal implant impregnated with progesterone or the Ovsynch protocol, besides the use of estradiol benzoate or GnRH to induce ovulation.There were used 18 PO Guzerat cows, multiparous non-lactating, aging between four and seven years, good body score condition, ranging from 3.0 to 4.0, The animals were kept in extensive management, where the diet provided met the nutritional requirements including protein mineral salt and water "ad libitum". The animals were divided into three groups, in group 1 (n = 6) it was applied at the D0, an intravaginal device CIDR® along with 2 mg of estradiol benzoate, at D8 it was administered 300 mg of a prostaglandin analogue and 300 IU of eCG besides intravaginal device removal, at D9 it was administered 1 mg of estradiol benzoate and at D11 artificial insemination was carried out. In group 2 (n = 6) it was used the same protocols as in group 1 except for the induction of ovulation when it was used 17 mg of a GnRH analogue and at D11 artificial insemination was carried. In group 3 (n = 6) was applied at D0, 200 mg of GnRH analogue, 0.530 mg of prostaglandin analogue at D7, at D9 it was administered 100 mg of GnRH analogue and at D10 artificial insemination was carried. From D0 to D8 animals were examined daily (24/24 h) by transrectal ultrasound .After removal of the implant on D8 in groups 1 and 2 and application of prostaglandin D7 (group 3) animals were assessed four times a day (6/6 hours) until D10 of the Protocol. A new follicular wave emergence for groups 1, 2 and 3 was observed respectively, 2.6 ± 0.16; 2.7 ± 0.18 and 2.9 ± 0.16 days, with no statistical difference (P < 0.05) between groups .There was statistical difference for groups 1, 2 and 3 in the range of wave emergence and ovulation in days, 7.1 0.18; 6.37 0.31; 5.33 0.66, the interval between implant removal and ovulation in hours, 64.2 6.99, 61.0 12.36, interval between the application of inducing ovulation and in hours, 43.6 6.89, 41.0 11.25, 38.2 7.89, greatest diameter of the DF (day 8), 10.71 0.30, 9.41 0.24, 9.75 0.35, greatest diameter of the DF (day 10), 13.1 0.23, 11.7 0.22, 12.0 0.34, Average follicle growth until day 8 - (mm / day), 1.36 0.07, 0.92 0.10, 1.10 0.11, Average follicle growth of 8-10 days - (mm / day), 2.40 0.08, 2.28 0.11, 2.23 0.10 and the percentage of animals that ovulated, 83.34% (5/6) , 66.67% (4/6), 50% (3/6). So the protocols of experimental groups 1 and 2 were moreeffective in promoting the synchronization of ovulation and are indicated to be used in a program of fixed-time artificial insemination in Guzerat cows.
Este trabalho teve por objetivo avaliar a dinâmica folicular de vacas da raça Guzerá tratadas com três protocolos para sincronização da ovulação onde se utilizaram implantes vaginais impregnados com progesterona ou o protocolo Ovsynch, além da utilização de benzoato de estradiol ou GnRH como indutor da ovulação. Foram utilizadas 18 vacas PO da raça Guzerá, multíparas, não-lactantes, com idades entre quatro e sete anos, escore de condição corporal de 3,0 a 4,0 (escala de 1 a 5). Os animais foram mantidos em regime extensivo, onde a dieta fornecida supriu as exigências nutricionais, receberam sal mineral proteinado e água “ad libitum”. Os animais foram divididos em três grupos, No grupo 1 (n=6) foi aplicado no D0, mesmo dia do dispositivo intravaginal CIRD®, 2 mg de benzoato de estradiol, no dia oito (D8), foram aplicados 0,530 mg de análogo de prostaglandina, 300 UI de eCG e foi retirado o dispositivo intravaginal, no dia nove (D9) foi aplicado 1 mg de benzoato de estradiol. No grupo 2 (n=6) foi aplicado no D0, mesmo dia do dispositivo intravaginal CIRD®, 2 mg de benzoato de estradiol, no dia oito (D8), foram aplicados 0,530 mg de análogo de prostaglandina, 300 UI de eCG IM e foi retirado o dispositivo intravaginal, no dia nove (D9) foi aplicado 17 μg de um análogo do GnRH. No grupo 3 (n=6) foi aplicado no D0, 200 μg de análogo do GnRH, 0,530 mg de análogo da prostaglandina no dia sete (D7) no dia nove (D9) foi aplicado 100 μg de análogo do GnRH. A partir do dia zero até o dia 8 os animais foram examinados diariamente (24/24 h) por via trans-retal com auxílio de ultrassom. Após a retirada do implante no dia 8 (grupos 1 e 2) e aplicação da prostaglandina no dia 7 (grupo 3) os animais foram avaliados 4 vezes por dia (6/6 horas) até o dia 10 do protocolo. Uma nova emergência da onda folicular para os grupos 1, 2 e 3 ocorreu respectivamente, em 2,6 ± 0,16; 2,7 ± 0,18 e 2,9 ± 0,16 dias, não havendo diferença estatística (P <0,05) entre os grupos (Tabela 1). Houve diferença estatística para os grupos 1, 2 e 3 no intervalo entre emergência da onda e ovulação em dias, 7,1 0.18; 6,37 0,31; 5,33 0,66; intervalo entre a retirada do implante e a ovulação em horas, 64,2 6,99; 61,0 12,36; intervalo entre a aplicação do indutor e a ovulação em horas, 43,6 6,89; 41,0 11,25; 38,2 7,89, maior diâmetro do FD (dia 8), 10,71 0,30; 9,41 0.24; 9,75 0,35, maior diâmetro do FD (dia 10), 13,1 0,23; 11,7 0,22; 12,0 0,34; Média de crescimento do folículo até dia 8 – (mm/dia), 1,36 0,07; 0,92 0,10; 1,10 0,11; Média de crescimento do folículo do dia 8-10 – (mm/dia), 2,40 0,08; 2,28 0,11; 2,23 0,10 e na porcentagem de animais que ovularam, 83,34% (5/6), 66,67% (4/6), 50% (3/6). Portanto os protocolos dos grupos experimentais 1 e 2 se mostraram mais eficientes em promover a sincronização da ovulação e são indicados para utilização em programa de inseminação artificial em tempo fixo em vacas da raça Guzerá.
Beal, Jordana. "Indução da ovulação em éguas crioulas com diferentes doses de gonadotropina coriônica humana." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/10013.
Full textThe effect of three different i.v. doses of human chorionic gonadotropin (hCG), as far as the possible influence of aging, follicular diameter and the month of the breeding season (September to January), was evaluated for ovulation induction in one hundred and twenty three Criollo mares, between 2 and 24 years old, during the 2006 breeding season. The mares were examined daily by rectal palpation and ultrasonography with a 5MHz linear transrectal transducer. When the ovarian follicles reached a diameter of 30 to 35mm, ovulation was induced with an injection of hCG. Mares were assigned into three groups, each one receiving a different i.v. dose of hCG (1000 IU; n=39, 1500 IU; n=41, 2000 IU; n=43). Mares were bred in the next day and examined daily until ovulation was detected. Percentage of mares ovulating before 24h of pharmacology induction was 10.5%, 7.3% e 4.7%, and before 48h, 92.5%, 83.7% and 86.0%, respectively, for groups of 1000, 1500 and 2000 IU of hCG. The month of the breeding season, age of the mares or follicular diameter (30-35mm) had no influence on ovulation response. The injection of hCG showed similar (P>0.05) effects with the tree doses studied. Ovulation was induced, until 48h after injection when a pre-ovulatory follicle 30- 35mm in diameter was visualized. Criollo mares with 30 to 35mm diameter pre-ovulatory follicles can have their ovulation induced when treated with 1000 UI, 1500 UI or 2000 UI of hCG.
O efeito de três diferentes doses endovenosas de gonadotropina coriônica humana (hCG) e a possível influência da idade dos animais, do diâmetro folicular e dos meses da estação de monta (setembro a janeiro) foram avaliados sobre a resposta ovulatória em cento e vinte e três éguas Crioulas, entre 2 e 24 anos de idade durante a temporada de monta de 2006. As éguas foram examinadas diariamente através de palpação retal e ultra-sonografia com transdutor trans-retal linear de 5MHz. Quando os folículos ovarianos em desenvolvimento alcançaram um diâmetro entre 30 a 35mm aplicou-se uma injeção endovenosa de hCG. As éguas foram distribuídas aleatoriamente em três grupos, conforme a dose de hCG aplicada: 1000 UI (n=39), 1500 UI (n=41), e 2000 UI; (n=43). As fêmeas foram cobertas no dia seguinte à aplicação de hCG e examinadas diariamente até a detecção da ovulação. O percentual de éguas que ovularam antes de se passarem 24h da aplicação de hCG foi de 10,5%, 7,3% e 4,7%, e o das que o fizeram antes de decorrerem 48h da injeção foi de 92,5%, 83,7% e 86,0%, respectivamente, para os grupos tratados com 1000 UI, 1500 UI e 2000 UI de hCG. Não houve relação entre os meses da estação de monta, a idade das éguas, diâmetro folicular (30-35mm) no momento da aplicação do hCG e a resposta ovulatória. As três doses de hCG utilizadas apresentaram efeito similar (P>0,05), induzindo a ovulação da maioria das éguas em até 48h. Éguas Crioulas em cio, apresentando folículos pré-ovulatórios com diâmetro entre 30-35mm respondem bem à indução da ovulação quando tratadas com 1000 UI, 1500 UI ou 2000 UI de hCG.
Boakari, Yatta Linhares [UNESP]. "Efeito da hCG ou deslorelina sobre a hemodinâmica folicular e perfil endogeno de LH em éguas cíclicas." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/123138.
Full textFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
A indução da ovulação após o tratamento com hCG e análogos de GnRH, como a deslorelina, ocorrem por mecanismos distintos. Por sua vez, é possível que estes tratamentos acarretem alterações na perfusão vascular folicular durante o período pré-ovulatório. Desta forma, a ultrassonografia colorida Doppler apresenta potencial para ser utilizada como ferramenta na avaliação em tempo real do potencial ovulatório de folículos em éguas. Os objetivos principais deste trabalho foram avaliar as alterações na perfusão vascular folicular (PVF) após o uso de hormônios indutores da ovulação e sua relação temporal com o perfil plasmático de LH. Além de avaliar se a PVF pode ser utilizada para indicar a proximidade da ovulação. Ciclos estrais de éguas foram aleatoriamente divididos em três grupos experimentais: grupo GnRH, grupo hCG e grupo controle (n=10 éguas/grupo). Tratamentos foram realizados na presença de folículo com diâmetro ≥35mm associado à edema uterino. O momento imediatamente antes do tratamento foi considerado H0. Colheita de sangue e exame ultrassonográfico Doppler função power-flow do folículo dominante foram realizados para avaliar, respectivamente, a concentração plasmática de LH e a perfusão vascular folicular (PVF). Os parâmetros foram avaliados de hora em hora entre os intervalos H0-H12 e a cada seis horas da H12 até H30. Adicionalmente, os grupos GnRH e hCG foram acompanhados a cada hora a partir da H30 até a detecção da ovulação ou até H48. Já no grupo controle, foi realizada ultrassonografia modo-B a cada seis horas após H30 e ao se detectar características indicativas da proximidade de ovulação a US Doppler foi realizada de hora em hora até detecção da ovulação. O grupo controle apresentou um intervalo mais longo até à ovulação (P < 0,0001). Efeito de grupo (P < 0.05) foi detectado para PVF. Animais do grupo GnRH apresentaram maior PVF (P < 0.05) média quando ...
Ovulation induction after treatment with hCG and GnRH analogs, such as deslorelin, occur through distinct mechanism. Meanwhile, it is possible that these treatments entail changes in follicular vascular perfusion during the pre-ovulatory period. Thus, color Doppler ultrasound presents a potential to be used as a tool for real-time assessment of follicles ovulatory potential in mares. The main purposes of this paper were to evaluate follicular vascular perfusion (FVP) after the use of ovulation induction hormones and the relationship with the plasmatic profile of LH. Additionally, evaluate if FVP can be used to indicate proximity to ovulation. Estrous cycles of mares were randomly divided in three experimental groups: GnRH group, hCG group and control group (n=10 mares/group). Treatments were done in the presence of a follicle with ≥35mm diameter associated with uterine edema. The moment immediately before treatment was considered H0. Blood collection and Doppler ultrasound exam with power-flow mode of the dominant follicle were done to evaluate, respectively, plasmatic concentration of LH and FVP. Parameters were evaluated every hour between H0-H12 and every six hours from H12 until H30. Additionally, GnRH and hCG groups were evaluated every hour from H30 until ovulation detection or until H48. In the control group, B-mode ultrasonography was completed every six hours after H30 and when detection of characteristics indicative of imminent ovulation Doppler ultrasonography was done every hour until ovulation detection. Control group presented a longer interval until ovulation (P < 0,0001). Group effect (P < 0.05) was detected for FVP. Animals from the GnRH group presented higher mean FVP (P < 0.05) when compared to the hCG and control groups since H0 until the moment of ovulation. No moment effect and interaction group:moment was found between experimental groups. Mean LH concentration between H1 and ...
FAPESP: 2012/11117-3
Boakari, Yatta Linhares. "Efeito da hCG ou deslorelina sobre a hemodinâmica folicular e perfil endogeno de LH em éguas cíclicas /." Botucatu, 2014. http://hdl.handle.net/11449/123138.
Full textBanca: Fabiana Ferreira de Souza
Banca: Fernanda Saules Ignácio
Banca: Sony Dimas Bicudo
Banca: Claudia Barbosa Fernandes
Resumo: A indução da ovulação após o tratamento com hCG e análogos de GnRH, como a deslorelina, ocorrem por mecanismos distintos. Por sua vez, é possível que estes tratamentos acarretem alterações na perfusão vascular folicular durante o período pré-ovulatório. Desta forma, a ultrassonografia colorida Doppler apresenta potencial para ser utilizada como ferramenta na avaliação em tempo real do potencial ovulatório de folículos em éguas. Os objetivos principais deste trabalho foram avaliar as alterações na perfusão vascular folicular (PVF) após o uso de hormônios indutores da ovulação e sua relação temporal com o perfil plasmático de LH. Além de avaliar se a PVF pode ser utilizada para indicar a proximidade da ovulação. Ciclos estrais de éguas foram aleatoriamente divididos em três grupos experimentais: grupo GnRH, grupo hCG e grupo controle (n=10 éguas/grupo). Tratamentos foram realizados na presença de folículo com diâmetro ≥35mm associado à edema uterino. O momento imediatamente antes do tratamento foi considerado H0. Colheita de sangue e exame ultrassonográfico Doppler função power-flow do folículo dominante foram realizados para avaliar, respectivamente, a concentração plasmática de LH e a perfusão vascular folicular (PVF). Os parâmetros foram avaliados de hora em hora entre os intervalos H0-H12 e a cada seis horas da H12 até H30. Adicionalmente, os grupos GnRH e hCG foram acompanhados a cada hora a partir da H30 até a detecção da ovulação ou até H48. Já no grupo controle, foi realizada ultrassonografia modo-B a cada seis horas após H30 e ao se detectar características indicativas da proximidade de ovulação a US Doppler foi realizada de hora em hora até detecção da ovulação. O grupo controle apresentou um intervalo mais longo até à ovulação (P < 0,0001). Efeito de grupo (P < 0.05) foi detectado para PVF. Animais do grupo GnRH apresentaram maior PVF (P < 0.05) média quando ...
Abstract: Ovulation induction after treatment with hCG and GnRH analogs, such as deslorelin, occur through distinct mechanism. Meanwhile, it is possible that these treatments entail changes in follicular vascular perfusion during the pre-ovulatory period. Thus, color Doppler ultrasound presents a potential to be used as a tool for real-time assessment of follicles ovulatory potential in mares. The main purposes of this paper were to evaluate follicular vascular perfusion (FVP) after the use of ovulation induction hormones and the relationship with the plasmatic profile of LH. Additionally, evaluate if FVP can be used to indicate proximity to ovulation. Estrous cycles of mares were randomly divided in three experimental groups: GnRH group, hCG group and control group (n=10 mares/group). Treatments were done in the presence of a follicle with ≥35mm diameter associated with uterine edema. The moment immediately before treatment was considered H0. Blood collection and Doppler ultrasound exam with power-flow mode of the dominant follicle were done to evaluate, respectively, plasmatic concentration of LH and FVP. Parameters were evaluated every hour between H0-H12 and every six hours from H12 until H30. Additionally, GnRH and hCG groups were evaluated every hour from H30 until ovulation detection or until H48. In the control group, B-mode ultrasonography was completed every six hours after H30 and when detection of characteristics indicative of imminent ovulation Doppler ultrasonography was done every hour until ovulation detection. Control group presented a longer interval until ovulation (P < 0,0001). Group effect (P < 0.05) was detected for FVP. Animals from the GnRH group presented higher mean FVP (P < 0.05) when compared to the hCG and control groups since H0 until the moment of ovulation. No moment effect and interaction group:moment was found between experimental groups. Mean LH concentration between H1 and ...
Mestre
Dias, Clarissa Vilela Rodrigues Vieira de Carvalho. "Ultrassom para monitorização da estimulação ovariana controlada: revisão sistematizada e metanálise de estudos randomizados controlados." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/17/17145/tde-20072016-161026/.
Full textBackground: The assisted reproductive techniques (ART) for the treatment of infertility/subfertility, include in vitro handling of both human oocytes and sperm or of embryos with the objective of achieving pregnancy and live birth. The recruitment of multiple follicles is often necessary for better results in pregnancy rates and it\'s achieved by performing controlled ovarian stimulation (COS). COS monitoring is performed by ovarian follicle counting and ultrasonography measurements and / or hormones dosage. It is appropriate to monitor the follicular phase for decisions regarding administered of gonadotropin dose, to assess the risk of ovarian hyperstimulation syndrome (OHSS), to determine the best time to trigger final follicular maturation. However, the need for intensive COS monitoring is controversial: the combination of the methods adds costs and discomfort for the woman who is undergoing ART and requires additional time. Objectives: To evaluate the efficacy and safety of monitoring controlled ovarian stimulation by ultrasound in assisted reproduced tecniques. Search Methods: The searches for randomized controlled trials (RCT) were performed in the main electronic databases; in addition, we hand searched the reference lists of included studies and similar reviews. We performed the last electronic search on March 29, 2015. Selection Criteria: Only truly randomized controlled trials comparing COS monitoring by ultrasonography and/or hormonal assessment, as studies comparing COS monitoring by 2DUS and 3DUS were considered eligible. We included studies that permitted the inclusion of the same participant more than once (cross-over or \'per cycle\' trials) only if data regarding the first treatment of each participant were available. Data Collection and Analysis: Two reviewers independently performed study eligibility, data extraction, and assessment of the risk of bias and we solved disagreements by consulting a third reviewer. We corresponded with study investigators in order to resolve any queries, as required. Results: The search retrieved 1717 records; ten studies were eligible. No study reported live birth. Six studies compared US only vs. US + Hormones. The confidence intervals (CI) were large and did not allow us conclude benefit or harm associated with the US Only for both OHSS (Odds ratio - OR=1.03, 95%CI 0.48 to 2.18, P=0.95), and miscarriage (relative risk - RR=0.37, 95%CI 0.07 to 1.79, P=0.21). For clinical pregnancy, the CI was compatible with small benefit to small harm (RR=0.96, 95%CI 0.80 to 1.16, P=0.70). For the number of oocytes retrieved, the CI was compatible with appreciable benefit to no effect (Mean difference - MD=0.92 oocytes, 95%CI -0.19 to 2.04, P=0.70). Two studies compared 3DUS vs. 2DUS: the confidence intervals (CI) were large and did not allow us conclude benefit or harm associated with 3DUS regarding clinical pregnancy (RR=1.00, CI95% 0.58 to 1.73) and number of oocytes retrieved (MD= -0.37 oocytes, 95%CI -3.63 to 2.89). One study compared 2DUS vs. SOET, the CI was large and did not allow us conclude benefit or harm associated with SOET regarding clinical pregnancy (RR=0.95, 95%CI 0.52 a 1.75) and number of oocytes retrieved (MD=0.50, 95%CI -2.13 a 3.13). Authors\' Conclusions: Regarding effectiveness, current evidence suggests that monitoring COS only by US only should not change substantially the chances of achieving clinical pregnancy. The number of retrieved oocytes is similar to compare with the monitoring by US associated with hormonal assessment. security also seems not to increase the risk of developing OHSS. However the interpretation of results should be performed with caution, since for all outcomes and comparisons, the available data are inconclusive because the quality of evidence was compromised by inaccuracy and poor reporting of study methodology. So we believe that further studies evaluating the ideal procedure for monitoring the COS are needed
Barillier, Hélène. "La stérilité féminine Prise en charge actuelle en France." Phd thesis, Université de Caen, 2007. http://tel.archives-ouvertes.fr/tel-00658638.
Full textNóbrega, Beatrice Nuto. "Avaliação da eficácia de uma estimulação ovariana controlada simplificada e de custo reduzido - um estudo piloto." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/17/17145/tde-15012019-102453/.
Full textIntroduction: Assisted reproduction techniques are the main treatment for infertility, that affects 9-15% of couples at reproductive age. However, the high cost of the treatment, which is often a limiting factor to access and continuation, is mainly due to medications used for controlled ovarian stimulation (OS). The objective of this study is to evaluate the feasibility of a new friendly and low-cost OS protocol, including the use of oral and low-cost medications and reducing the number of injections, in order to enable the design of a large randomized controlled trial. Methods: All women undergoing ART with OS in a university fertility center in Brazil within abril-2015 to Feb-2016 with <= 90 Kg, 18-40 years, and with an antral follicle count (AFC) >= 9 were invited to participate. 40 patients which matched inclusion criteria agreed to participate and started OS on menstruation days 2 or 3. They received oral letrozole 7.5mg/day for 5 days and oral clomiphene citrate 100mg daily until the triggering. On stimulation day-3 they received a single dose of corifollitropin alfa 100mcg subcutaneously. Ultrasound monitoring started on day-8 and proceeded every other day. The final triggering was performed as usual with GnRH agonist, leuprolide 1mg or triptorelin 0.2mg, subcutaneously. The oocyte retrieval was performed 35-36 hours afterwards. No GnRH antagonist was used for prevention of LH surge. Most oocytes were injected and all embryos were cryopreserved for later transfer. Some patients decided for oocytes cryopreservation. The results were compared to other 40 patients who underwent conventional OS at the same service and period of time, randomly selected according to inclusion and exclusion criteria. Both groups were divided in two subgroups according AFC: 9-19 and >19. The primary outcome was the number of mature (MII) oocytes retrieved. Results: There was no difference in control and research group regarding age, weight, body mass index and AFC. The results for the new protocol were: the median number of total oocytes retrieved was 12 and of MII oocytes 9. In AFC 9-19 subgroup the median was 9 and 7.5 and in >19 AFC subgroup was 16 and 13. The fertilization and cleavage rates were respectively 72% and 93%. No statistical difference was found between this results and the control group. The median length of OS was 11 days, with a 2 days increase comparing tocontrol. There were two cases of ovarian hyperstimulation syndrome, one moderate and one severe according to the Golan criteria. Both were clinically treated with hyperhydration, symptomatic medication and thromboprophylaxis with satisfactory improvement within few days. Conclusions: Besides a longer duration in the OS, the number of total and MII oocytes, fertilization and cleavage rates were satisfactory. Thus this new friendly and low cost OS protocol is feasible for further evaluation in a randomized controlled trial.
Bianchi, Paulo Homem de Mello. "O papel da emergência de ondas foliculares na sincronização da estimulação ovariana para fertilização in vitro." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/5/5139/tde-05022014-113453/.
Full textINTRODUCTION: Ovarian stimulation, an important step of in vitro fertilization treatments, relies on the understanding of ovarian physiology. Recently, a new model of human folliculogenesis has been suggested, based on waves of coordinated follicular development. In animal studies, it has been shown that ovarian stimulation synchronized with the emergence of a follicular wave results in better treatment outcomes. Ovarian stimulation protocols for in vitro fertilization in humans are not synchronized with wave emergence. Therefore, the objectives of this study were to investigate two strategies to control a follicular wave emergence (aspiration of the dominant follicle and hCG mediated ovulation induction) and to describe the effects of synchronizing the beginning of stimulation with the start of a follicular wave. METHODS: Women with indications of in vitro fertilization due to tubal and/or male fator infertility were invited to participate in this controlled trial. Participants were randomized to the following groups: control, \"hCG\" and \"aspiration\". Patients on the control group (n=6) were submitted to the flexible GnRH antagonist protocol starting recombinant FSH administration (150 IU/d) on the third day of the menstrual cycle. Women on the experimental groups underwent serial transvaginal sonography until a dominant follicle >= 15 mm was identified. In the \"hCG\" group (n=5) 250ug of recombinant hCG was administered; serial transvaginal sonography was resumed two days later. In the \"aspiration\" group (n=5) the dominant and subordinated follicles larger than 10mm were aspirated; serial transvaginal sonography was resumed one day later. When a follicular wave emergence was detected (increase in the number of follicles < 10mm), patients were submitted to an ovarian stimulation protocol similar to the control group. Embryos were cryopreserved for future transfer due to endometrial asynchrony. RESULTS: A follicular wave emerged one day after the dominant follicle aspiration or two days after the administration of recombinant hCG in all women. Total dose of gonadotropins administered, stimulation length, variation of serum estradiol during stimulation, variation in the number of small, medium and large follicles during stimulation, number of oocytes harvested, fertilization rates and the number of embryos with adequate and inadequate morphology were similar in the three groups. The largest follicle growth rate was inferior for women in both experimental groups until day 5 of stimulation, increasing thereafter. Serum progesterone levels were superior in both experimental groups between the 5th day and the end of stimulation. The presence of the corpus luteum did not influence mechanically the follicular dynamics nor the laboratory performance of the ipsilateral oocytes. Eight patients have already been submitted to embryo transfers; three had a positive betahCG test, all from the experimental groups. CONCLUSIONS: Both interventions are able to induce a follicular wave emergence allowing the synchronization of ovarian stimulation. The synchronized ovarian stimulation resulted in the production of viable embryos
Ben, Messaoud Khaoula. "Etude du recours, de l’accès et de l’abandon des traitements de l’infertilité à partir des données du Système National des Données de Santé Infertility Treatment in France, 2008–2017: A Challenge of Growing Treatment Needs at Older Ages." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASR014.
Full textMore than 50 million couples suffer from infertility worldwide. The increase of infertility in developed countries is mainly due to postponing the age of parenthood. Two main stages in the infertility care pathway can be identified: ovulation induction treatments and assisted reproductive technology (ART), which are respectively the first and second-line treatments. ART is relatively well-known, while ovulation induction remains unexplored due to the lack of available data sources. This dissertation explores infertility treatments by considering both ovulation induction and ART, using. the French National Health Insurance Database, recently opened to research. In particular, we used the general sample of beneficiaries (EGB) and the Inter-Regime Consumption Datamart (DCIR). We achieved our objective by focusing on three axes. Axis 1: In France, one in four couples fails to achieve pregnancy after 12 months of trying, but what is the proportion of women treated for infertility? The overall use of infertility treatment is unknown in France and around the world. Among women aged 20–49, 1.25% were treated for infertility between 2008 and 2017. The stability of infertility treatment use over the decade conceals an increase of 24% in use among women aged 34 and over. Axis 2: In France, infertility treatment costs are fully covered by the national health insurance. However, international publications have suggested the existence of barriers to accessing ART, even in context of free treatment. In our study, we estimated that 70% of women for whom ovulation induction treatment was not successful did not have access to IVF. We show that social disadvantage, deprivation in the area of residence, young ages and advanced ages increase the risk of non-access to IVF. Axis 3: The final axis deals with the early discontinuation of ovulation induction (in the first semester following initiation of ovulation induction). The rate of early discontinuation was estimated to be 30%. A stratified analysis of the type of, the ovulation inductors used and the prescriber showed that good management or monitoring of infertility care reduces the risk of early discontinuation, while advanced age increases this risk. There is also a strong interaction between the type of ovulation inductors and prescriber and management or monitoring of infertility care. The issue of social inequalities is often a blind spot in infertility care that appears essential to investigate in future research
Pansera, Melissa. "Glucose transporter 1 expression, induction and transcriptional regulation in the granulosa cells of ovulating follicles in mice." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123164.
Full textEn réponse à l'augmentation pré-ovulatoire de l'hormone lutéinisante (LH) , les cellules de la granulosa des follicules ovulatoires subissent la lutéinisation et forment le corps jaune (CL). Au cours de ce processus, les cellules de la granulosa acquièrent la capacité de synthétiser le progestérone, un processus qui nécessite beaucoup d'énergie. En effet, la LH est connu pour sont effet stimulant sur l'absorption du glucose dans l'ovaire lutéinisé chez le rat, mais les mécanismes n'ont pas été explorés. L'absorption du glucose par les cellules est médiée par une famille de transporteurs de glucose (GLUT) qui permettent le transport passif de glucose. Les isoformes Glut 1-4 sont les mieux caractérisées. Les isoformes de Gluts ont été identifiées dans les cellules ovariennes, mais il n'est pas clair quelles isoformes sont exprimées dans les cellules de la granulosa. Les profils d'expression des isoformes Gluts au cours du développement folliculaire et lutéale, aussi bien que leur régulation transcriptionnelle, n'ont pas été explorés dans les cellules de la granulosa. La présente recherche vise à identifier les isoformes des Gluts trouvées dans les cellules de la granulosa à des étapes spécifiques de la dynamique de l'ovaire chez la souris. L'eCG et l' hCG qui favorisent le développement folliculaire et l'ovulation, respectivement, ont été administrées à des souris femelle immatures. L'abondance de l'ARNm des quatre isoformes Glut dans des cellules de la granulosa ont été recueillies aux points de contrôle spécifiques au cours du cycle oestral. Suite à l'identification de Glut1 dans les cellules de la granulosa, le kit Fluorescent glucose cell-based uptake kit (Cayman Chemicals) a été utilisé pour déterminer l'absorption du glucose par les cellules de la granulosa en culture primaire.L'inhibition pharmacologique de MAPK et mTOR a été effectuée afin d'identifier la cascade de signalisation impliquée dans l'expression de Glut1. L'analyse bioinformatique a été utilisée pour déterminer la régulation transcriptionnelle du promoteur de Glut1 de la souris, suivie par l'immunoprécipitation de la chromatine (ChIP) pour valider ces résultats in silico. Cette étude confirme que l'absorption de glucose est en effet stimulée par la LH, montre pour la première fois dans les cellules de la granulosa que Glut1 est potentiellement responsable de l'augmentation de l'absorption du glucose après le pic de LH et décrit les voies de signalisation impliquées dans l'expression et la transcription de Glut1.
Tararbit, Karim. "Assistance médicale à la procréation et cardiopathies congénitales : études en population." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA11T024/document.
Full textUsing population-Based data, we: 1) assessed the risk of congenital heart defects (CHD) in assisted reproductive techniques (ART) conceived fetuses; and 2) evaluated the effects of ART on prenatal management and perinatal outcomes of fetuses with CHD. We observed that ART were associated with a 40% increased risk of CHD without associated chromosomal anomalies (adjusted OR = 1.4 95%CI 1.1-1.7). We also found varying associations between the different methods of ART and categories of CHD. We observed that ART were associated with 2.4-Higher odds of tetralogy of Fallot (adjusted OR = 2.4 95%CI 1.5-3.7), whereas no statistically significant association was found for the three other specific CHD included. In our population, ART exposure did not seem to modify prenatal diagnosis and termination of pregnancy for fetal anomaly in fetuses with CHD compared to fetuses with CHD conceived spontaneously. The risk for premature birth in fetuses with CHD conceived following ART was 5-Fold higher as compared to fetuses with CHD conceived spontaneously (adjusted OR = 5.0 95%CI 2.9-8.6). Using a path-Analysis method, we found that multiple pregnancies contributed for about 20% to the higher risk of tetralogy of Fallot associated with ART that we had found. Finally, multiple pregnancies contributed for the 2/3 of the risk of premature birth associated with ART in fetuses with CHD
Crepaldi, Gabriel Armond. "Eficácia de diferentes protocolos de indução da ovulação e de intervalos de inseminação em vacas de corte submetidas à IATF." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/10/10131/tde-17122009-133943/.
Full textAiming to minimize the number of handling during protocols for fixed-time artificial insemination (FTAI), four experiments were performed to evaluate the follicular dynamics (Experiments 1A and 1B) and conception rate (CR; Experiments 2, 3 e 4) in beef cows treated with estradiol cypionate (EC) or benzoate (EB) as ovulation inducers. In Experiment 1A, 51 animals received 2mg of EB and a new intravaginal progesterone device (DIB) on D0. On D8, animals were assigned into four treatments (G-EB8, G-EB8.5, G-EB9 and G-EC8). On the same day, the device was removed, 0.530mg of Cloprostenol and 300UI of eCG were administered [morning (AM) - G-EB8, G-EC8 and G-EB9; afternoon (PM) - G-EB8.5]. Cows of G-EC8 received 1.0mg of EC, while G-EB8 and G-EB8.5 received 1.0mg of EB at DIB removal, and those of G-EB9 received 1.0mg of EB 24h later. Ultrasonography was performed every 12h from DIB removal until ovulation. Statistical analysis was performed using PROC GLM and PROC GLIMMIX (SAS). No interactions were observed between treatments. Results of G-EB8, G-EC8, G-EB8.5 and G-EB9 were, respectively: diameter of ovulatory follicle (OF;11.9±0.4b; 14.3±0.4a; 12.3±0.4b; and 13.3±0.6abmm; P=0.01), ovulation rate (OR; 100%; 90.0%; 100% and 91.7%; P=0.99) and interval between device removal-ovulation (IRO; 58.3±2.1b; 72.0±2.0a; 57.6±1.3b and 72.0±0.0ah; p<0.001). Experiment 1B (n=35) was performed using a fatorial design 3x3 [DIB reutilization and ovulation inducer (OI)]. On D0, animals were allocated into three groups [new DIB (DIBN), used 8 (DIB8) and 16 days (DIB16)]. At DIB removal, animals were reallocated into the same OIs described on Experiment 1A, except by the G-EB8. The results of G-EC8, G-EB8.5 and G-EB9 were, respectively: OF (14.0±0.6; 13.8±0.6 and 13.6±0.5mm; P=0.88), OR [81.8%; 83.3% and 83.3%; P=0.93], and IRO (72.0±2.0a; 59.6±1.6b and 73.2±1.2ah; p<0.01). Results of DIBN, DIB8 and DIB16 were, respectively: OF (13.8±0.7; 13.5±0.6 and 13.9±0.5mm; P=0.99), OR (90.9%; 83.3% and 75.0%; P=0.93), and IRO (74.4±1.6a; 72.0±0.0ab and 68.0±2.0bh; P=0.02). At Experiment 2, 584 animals were allocated into a 3x2 fatorial design [OI (EC8, EB8.5 and EB9) and FTAI period (FTAI-AM or FTAI-PM)], being treated with DIBN. There was no difference on CR: EC8 (57.5%), EB9 (59.9%) and EB8.5 (49.5%; P=0.09) and IATF AM (56.6%) or PM (54.8%; P=0.66). On Experiment 3, 521 cows were allocated into the same experimental design of Experiment 2, however using DIB8. There was no difference on CR between different OIs: EC8 (47.3%), EB9 (53.3%) and EB8.5 (55.2%; P=0.10). However, there was difference on CR between FTAI-AM (60.7%) and FTAI-AM (48.3%; P=0.01). On Experiment 4, 1192 cows assigned into a 2x3x2 fatorial design (DIBN and DIB8; EB8.5, EB9 and C8; FTAI-AM and FTAI-PM). No differences were found on CR between FTAI-AM (64.6%) or FTAI-PM (59.5%; P=0.06), and OIs; EC8 (65.8%), EB9 (61.8%) and EB8.5 (58.6%; P=0.12). Cows treated with DIBN showed higher CR when compared to those treated with DIB8 (65.8 vs. 59.4%, respectively; P=0.04). These results indicate a similar efficiency using different OIs. Using DIB8, the FTAI-PM showed lower CR. Also the protocol using DIB8 resulted in lower CR than using DIBN.