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Littérature scientifique sur le sujet « Progesterone Levels »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Progesterone Levels"

Jerat, Sandra, and Susan Kaufman. "Effect of pregnancy and steroid hormones on plasma adrenomedullin levels in the rat." Canadian Journal of Physiology and Pharmacology 76, no. 4 (1998): 463–66. http://dx.doi.org/10.1139/y98-113.

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Pregnancy is characterized by volumeexpansion and vasodilation. We investigated whether thehypotensive peptide adrenomedullin (ADM) might be a significantfactor in the cardiovascular adaptation to pregnancy. Rats wereprepared with indwelling cannulae. Plasma ADM levels weremeasured by RIA before mating, at 7, 14, and 21 days ofpregnancy, and at 7 days postpartum. We also investigated theeffects on plasma ADM levels of administering estrogen,progesterone, and the metabolite of progesterone3-OH-5-pregnan-20-one(3-OH-DHP); this last steroid has been implicated inaltering reflex control of blood p

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Szrok-Jurga, Sylwia, Jacek Turyn, Julian Swierczynski, Wiktoria Stelmanska, Malgorzata Presler, and Ewa Stelmanska. "Gender-Dependent Effect of Progesterone on the Expression of Metallothionein Genes in Rat Inguinal Adipose Tissue." International Journal of Molecular Sciences 26, no. 9 (2025): 4066. https://doi.org/10.3390/ijms26094066.

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Metallothioneins (MTs) are low-molecular-weight metal-binding proteins potentially involved in the detoxification of heavy metals, protection against oxidative stress, and other biological processes. This study examined progesterone’s influence on Mt gene expression in rat adipose tissue. Wistar rats (females and males) received 100 mg of progesterone per rat. MT mRNA and protein levels were quantified by real-time PCR and Western blotting methods. Using radioimmunoassay, the serum progesterone level was measured. In this study, progesterone administration to female rats led to a 2.5-fold incr

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Nahoul, Khalil, and Dominique de Ziegler. "“Validity” of Serum Progesterone Levels After Oral Progesterone." Fertility and Sterility 61, no. 4 (1994): 790–91. http://dx.doi.org/10.1016/s0015-0282(16)56666-7.

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Lisnawati, Yuyun, Noroyono Wibowo, and Ana Mariana. "Correlation of cervical progesterone levels to plasma progesterone levels in normal pregnancy and preterm labor: A cross-sectional study." F1000Research 8 (February 15, 2019): 189. http://dx.doi.org/10.12688/f1000research.17525.1.

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Background: Theory of “functional progesterone withdrawal” explains the role of progesterone prior to delivery. Previous studies mentioned the existence of progesterone regulation in the cervix that plays a role in maintaining the integrity of the cervix and cervical ripening. Cervical progesterone levels relate to activities of progesterone at the cervix, compared to its amount in circulation. The objective of this study was to measure cervical mucus progesterone levels and its correlation to plasma progesterone levels in pregnancy. Methods: This was a cross sectional study conducted in Janua

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Lisnawati, Yuyun, and Noroyono Wibowo. "Correlation of cervical progesterone levels to plasma progesterone levels in normal pregnancy and preterm labor: A cross-sectional study." F1000Research 8 (October 25, 2022): 189. http://dx.doi.org/10.12688/f1000research.17525.2.

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Background: The theory of “functional progesterone withdrawal” explains the role of progesterone prior to delivery. Previous studies mentioned the existence of progesterone regulation in the cervix that plays a role in maintaining the integrity of the cervix and cervical ripening. Cervical progesterone levels relate to activities of progesterone at the cervix, compared to its amount in circulation. The objective of this study was to measure cervical mucus progesterone levels and its correlation to plasma progesterone levels in pregnancy. Methods: This was a cross-sectional study conducted in J

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Rybkin, I., G. Bareh, K. Wei, J. D. Jacobson, J. Corselli, and P. J. Chan. "Progesterone levels and IVF pregnancy." Fertility and Sterility 106, no. 3 (2016): e336. http://dx.doi.org/10.1016/j.fertnstert.2016.07.952.

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KIRLANGIÇ, Mehmet Mete, Mefkure ERASLAN ŞAHİN, Merve VURAL YALMAN, et al. "Polikistik over sendromlu obez olmayan kadınlarda progesteron ve progesteron kaynaklı bloke edici faktör (PIBF) düzeyleri." Cukurova Medical Journal 47, no. 3 (2022): 1114–20. http://dx.doi.org/10.17826/cumj.1121724.

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Purpose: This study aimed to evaluate the level of progesterone and progesterone-induced blocking factor (PIBF), an immune mediator, in non-obese patients with polycystic ovary syndrome (PCOS). Materials and Methods: Totally 72 patients were recruited into study and divided into 2 groups: The first group was patients diagnosed with PCOS (n = 36) and the second was the healthy control group (n=36). The diagnosis of PCOS was made according to Rotterdam diagnostic criteria. All patients were 18–35 years old and non-obese (body mass index (BMI) < 25 kg/m2). Follicle-stimulating hormone (F

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Cai, Zailong, and Carlos Stocco. "Expression and Regulation of Progestin Membrane Receptors in the Rat Corpus Luteum." Endocrinology 146, no. 12 (2005): 5522–32. http://dx.doi.org/10.1210/en.2005-0759.

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Despite evidence strongly supporting progesterone’s autocrine actions in the rat corpus luteum (CL), classical progesterone receptors (PR) have not been detected in this gland. Alternatively, in several other systems, progestins have been reported to activate nongenomic pathways via putative progestin membrane receptors (PMRs). The aim of this investigation was to determine whether rat CL membranes bind progestins and contain PMR homologs and whether these proteins are expressed during CL development in a manner that parallels luteal function. We found that luteal cell membranes specifically b

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Mlaco, N., A. Katica, B. Cengic, and V. Sakic. "Results of applying gonadorelin Fertagyl on the progesterone concentrations in the blood serum and cow conception." Biotehnologija u stocarstvu 29, no. 1 (2013): 19–28. http://dx.doi.org/10.2298/bah1301019m.

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Considering there are different and inconsistent results of the wider use of gonadotropin-releasing hormone or its analogs in cattle breeding and due to scarce research studies in the field of individual breeding, we decided to explore the influence of gonadorelin Fertagyl on the results of the blood serum progesterone levels and conception of cows in veterinary field practice. Examination of the progesterone levels involved 14 (fourteen) cows treated with gonadorelin (GnRH), Fertagyl, manufactured by Intervet, according to the manufacturer?s instructions dose of 2,5ml (250 micrograms), within

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Kareem Juhi, Ali, and Aliaa Saadoon Abdul- Razzaq Al-Faraji. "Measuring levels of hormones in osteoporosis Iraqi women patients." Bionatura 8, no. 1 (2023): 1–3. http://dx.doi.org/10.21931/rb/2023.08.01.85.

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This study was conducted to investigate the effect of the hormone progesterone and testosterone on osteoporosis in women, and it was found that there are statistically significant differences between the hormone progesterone and there are no statistically significant differences for the hormone testosterone. The ELISA method measured the testosterone concentration in the blood and the progesterone concentration. The purpose of the study measuring the levels of some hormones in osteoporosis Iraqi women patients. Fifty (50) women patients with osteoporosis were admitting Baghdad Teaching Hospita

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Thèses sur le sujet "Progesterone Levels"

Satterfield, Michael Carey. "Evaluation of the effect of progesterone CIDR Devices on circulating levels of progesterone in cyclic ewes." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1552.

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A homogeneous group of thirty-one crossbred ewes was used to determine the effect of administering a progesterone Controlled Intravaginal Drug Releasing Device (CIDR) on circulating levels of progesterone in the subsequent cycle following CIDR removal. Circulating progesterone levels were determined for each ewe through daily blood collection via jugular venipuncture. Each ewe underwent a pretreatment 25 day sampling period (Period 1), a 12 day treatment period characterized by the presence of the CIDR (Period 2), and another 25 day sampling period following CIDR removal (Period 3). During the

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Reading, Karen Joanne. "Energy availability and its relationship to salivary progesterone levels in elite adolescent aesthetic athletes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40098.pdf.

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McMillan, Hugh John. "Peripheral changes in levels of progesterone and prolactin during reproduction in the Siberian hamster, Phodopus sungorus, evidence for both conservation and rapid evolution of reproductive endocrinology over evolutionary time." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22352.pdf.

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Górriz, Martín Lara [Verfasser]. "An in vitro study on the myometrial contractility in dairy cattle before calving and after postpartum LPS infusion. Relation to blood progesterone and estradiol-17b levels / Lara Górriz Martín." Hannover : Bibliothek der Tierärztlichen Hochschule Hannover, 2013. http://d-nb.info/1037800680/34.

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Correia, Iolanda Baptista Gonçalves Caires. "Influência do ciclo menstrual na fracção exalada de óxido nítrico." Master's thesis, Faculdade de Ciências Médicas. Universidade Nova de Lisboa, 2011. http://hdl.handle.net/10362/6987.

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RESUMO:A determinação da fracção exalada de óxido nítrico (FENO) é amplamente utilizada como um biomarcador da inflamação eosinofílica das vias aéreas. Alguns estudos sugerem que a produção de óxido nítrico (NO) é influenciada pelas variações cíclicas hormonais na mulher,porém os dados não são consensuais. Deste modo, o objectivo do nosso estudo foi avaliar como varia a FENO ao longo do ciclo menstrual. Com esta finalidade, avaliamos um grupo de 20 voluntárias, em idade fértil, com ciclo menstrual regular, não fumadoras, que não utilizavam contraceptivos hormonais, nem suplementos alimenta

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Jarras, Hend. "Effects of progesterone at the enteric level in a mouse model of Parkinson's disease." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37714.

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La maladie de Parkinson (MP) est la deuxième maladie neurodégénérative la plus répandue dans le monde. Elle se caractérise par des symptômes moteurs causés par une perte des neurones dopaminergiques de la substance noire du cerveau. Les patients souffrent aussi de symptômes non-moteurs pouvant apparaître jusqu’à plusieurs années avant les déficits moteurs. Parmi ceux-ci se retrouvent des troubles gastro-intestinaux, suggérant l’implication du système nerveux entérique (SNE) dans la pathologie. En effet, des neurones dopaminergiques sont retrouvés dans le plexus myentérique (PM) du SNE, dont un

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Huang, Zi-Qiang, and 黃自強. "Relationship between deciduomal development and estrogen, progesterone receptor levels in the pregnant hamster." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/41102163931775510409.

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Athorn, Rebecca Zoe. "Dietary manipulation of local versus systemic progesterone and effects on embryo survival and litter size in gilts." Thesis, 2013. http://hdl.handle.net/2440/83523.

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Progesterone is an important driver of endometrial function and as such plays an important role in early embryo development, implantation and survival. High feeding levels during early pregnancy in gilts usually result in a decrease in the concentration of progesterone in systemic blood circulation, through an increase in hepatic metabolism, and have as a consequence been associated with a reduction in embryo survival. However, effects of feeding level on embryo survival have been equivocal with some studies finding no, or even, positive effects of an increased feeding level on embryo survival

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Wang, Xing-Shi, and 王馨世. "Circulating levels of sex steroid hormones (estradiol progesterone & testosterone) in normal and abnormal pregnant women." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/57159478978119230452.

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Yu, Hsueh-Yin, and 游雪音. "Changes of the Fecal Progesterone Levels around Puberty, during Estrous Cycle and Gestation Stage in the Formosan Reeves’ Muntjac (Muntiacus reevesi micrurus) Does." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/53417562839093929600.

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碩士<br>國立屏東科技大學<br>畜產系所<br>95<br>The Formosan Reeves’ Muntjac (Muntiacus reevesi micrurus) is a small reddish ruminant which is endemic to Taiwan (22~25.5°N), and bears the capability of year-round reproduction. The aim of this thesis is to utilize the non-invasive sampling method for fecal progesterone analysis, associated with the estrous behavior record to investigate the reproductive characteristics in the Formosan Reeves’ muntjac does. There were high positive correspondences between FP4 and SP4 values, and negative BSE between and FP4 or SP4 values of the sampling animals in various repro

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Livres sur le sujet "Progesterone Levels"

Thomas, Sandra. Influence of varying levels of blood progesterone upon estrous behavior in cattle. 1985.

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CORRELATIONS OF LUTEAL PROGESTERONE WITH RELATIVE WEIGHT AND EXERCISE LEVELS IN NORMAL WOMEN. HARVARD COLLEGE, 1985.

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Blackman, Janine A. Midlife and Beyond (DRAFT). Edited by Madeleine M. Castellanos. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190225889.003.0002.

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This chapter discusses the varying changes in female hormones that begin 20 to 30 years prior to a woman’s final menstrual period (FMP), commonly around 50 years of age. Both testosterone and progesterone begin declining in a woman’s 20s and 30s, respectively, and antral follicle count in her ovaries also declines. In contrast, estrogen levels remain relatively stable from puberty until a woman’s early 40s This chapter discusses the changes that occur in a woman’s sexual health and overall health and well-being as her hormones change throughout her lifespan. It also discusses the controversy a

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Chapitres de livres sur le sujet "Progesterone Levels"

Thomas, Abraham, and Janet A. Amico. "Progesterone Regulates Hypothalamic Oxytocin mRNA Levels Through Gamma Aminobutyric Acid." In Advances in Experimental Medicine and Biology. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-4871-3_12.

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Gelen Kaya, Pinar. "Nutrition in Women with Polycystic Ovary Syndrome (PCOS)." In Obstetrics & Gynecology and Nutrition. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359494.4.

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In women with polycystic ovary syndrome, not every hormone necessary for the full maturation of an egg can be produced. Since none of the eggs can mature and crack from the ovary, ovulation cannot occur and the hormone progesterone cannot be produced. This situation causes the menstruations to be irregular or not at all. The insulin hormone is a hormone produced by the pancreas that regulates the level of glucose in the blood. ""Insulin resistance"" is observed in many women with polycystic ovary syndrome. In insulin resistance; body tissues resist the action of insulin and as a result, the bo

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Lin, J. H., S. S. Chang, J. C. Huang, et al. "Changes of Fecal and Plasma Progesterone Levels in Swamp Buffalo Cows (Bubalus Bubalis) During the Estrous Cycle and Pregnancy." In Biotechnology in Agriculture. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1779-1_95.

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Srivastava, R. K., S. Harris-Hooker, and R. Sridaran. "Inhibitory Effects of In Vivo and In Vitro Treatment of a LHRH Antagonist (Nal-Lys Antide) on Progesterone Levels During Early Pregnancy in the Rat." In Signaling Mechanisms and Gene Expression in the Ovary. Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4612-3200-1_45.

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Zomborszky, Zoltan, László Sugár, and Tibor Feher. "Establishing Early Pregnancy by the Evaluation of the Serum Progesterone Level." In The Biology of Deer. Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4612-2782-3_85.

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Lee-Chiong, Teofilo. "Sleep in Women." In Sleep Medicine: Essentials and Review. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306590.003.0015.

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Abstract Sleep can be affected by changes in reproductive cycles across the lifespan of women. Levels of estrogen and progesterone vary throughout the reproductive years, with a monthly cyclic pattern associated with menstruation, increasing during pregnancy, returning to preconception levels after delivery, and declining during perimenopause and menopause. Compared with men, women generally have more subjective complaints of insufficient or nonrestorative sleep while reporting a greater need for sleep. The usual 28to 30-day menstrual cycle is divided into two phases, each lasting about 14 to

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Edwards, Christopher. "Perspective Chapter: A New View of the Endocrinology of Pregnancy and Parturition – Lessons from the Literature." In New Perspectives in Human Embryology [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1005047.

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Human and sheep parturition are more akin than currently recognised. In both glucocorticoids are key. The difference being mechanisms controlling glucocorticoid levels. Sheep have low cortisol during pregnancy which rise at term: humans control local glucocorticoid levels via the fetal adrenal and DHEA-sulphate. This increases 11β-HSD2 expression protecting the fetus from maternal cortisol by converting this to cortisone. During pregnancy DHEA inhibits placental and fetal membrane 11β-HSD1 expression. This plus hexose-6-phosphate dehydrogenase inhibition decreases 11β-HSD1 oxido-reductase/incr

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Tiberiu Constantin, Nicolae, Florin Petrișor Posastiuc, and Crina Raluca Andrei. "Progesterone: An Essential Diagnostic Resource in Veterinary Medicine." In Progesterone - Biological Function and Clinical Application [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1005670.

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Progesterone (P4), a steroid hormone, is widely recognized for its vital function in maintaining pregnancy across various animal species. Its functions extend beyond pregnancy management, encompassing the determination of pregnancy, optimal reproductive timing, anticipation of parturition, scheduling of elective cesarean sections, and identification of conditions like growth hormone disorders, insulin-dependent diabetes, and infertility. Its versatility extends to involvement in bone marrow trophication, stress response assessment, and neuroprotection following traumatic brain injuries or feta

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Sharma, Neha, Sanghapriya Mukherjee, and Aparajita Kushwaha. "Cytokine Storm in Hypothyroidism in Infertile Women." In Hypothyroidism - New Aspects of an Old Disease. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102044.

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Thyroid dysfunction interferes with several aspects of reproduction along with pregnancy. Hypothyroidism in females leads to an elevated level of hormone prolactin which decreases levels of follicle-stimulating hormone (FSH), luteinizing hormone (LH) and finally causes infertility. Obesity acts upon the reproductive cycle by decreasing oestrogen metabolism stimulating menstrual disturbance along with an ovulation. But till date, one of the most underestimated obstacles in fertility is inflammation. Hypothyroidism leads to inflammation in secondary epithelial cells of thyroid gland. This affect

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Paiva, Juliana Hilário Cardoso de, Ana Carolina do Nascimento Deboni, Lyvia Freitas Marques, et al. "Applicability of Pap smear and progesterone dosage in artificial insemination in." In Multidisciplinary Perspectives: Integrating Knowledge. Seven Editora, 2024. http://dx.doi.org/10.56238/sevened2024.007-081.

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Pets have been bred to live with human beings for different reasons, the main one is affective relationships, but also for the purpose of therapy, company for people with special needs, sports, participation in tournaments and exhibitions and reproduction. The pet sector in Brazil is divided into 3 pillars, industry, commerce and animal husbandry services. As a result, animal reproduction and genetic improvement have been gaining ground, due to an increase in the demand for specialists and consequently a significant increase in research in the area. Artificial insemination is the most used bio

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Actes de conférences sur le sujet "Progesterone Levels"

Prokopuk, A. I., K. V. Yurchankova, E. M. Shpadaruk, and R. M. Smolyakova. "ASSESSMENT OF HORMONAL STATUS WITH AN ESTABLISHED MOLECULAR-BIOLOGICAL PROFILE OF PATIENTS WITH BREAST CANCER OF DIFFERENT REPRODUCTIVE PERIOD." In SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2021. http://dx.doi.org/10.46646/sakh-2021-2-93-96.

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In the course of the study, it was found that the luminal A subtype in patients with breast cancer is associated in 100% of cases with increased blood levels of estradiol, progesterone, and prolactin. In the postmenopausal period, the luminal B (Her-2-positive) subtype is associated with a 100% increase in the concentration of the hormones estradiol and progesterone. In patients with preserved ovarian-menstrual function, luminal B (Her-2-positive) subtype in 37.5% of cases is associated with increased estradiol content. Luminal B (Her-2-negative) subtype is associated with increased blood leve

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Tolić Stojadinović, Ljiljana, K. Pavićević, and Svetlana Grujić. "DETERMINATION OF GROWTH PROMOTHER PROGESTERONE IN CHICKEN EGGS." In 17th International Conference on Fundamental and Applied Aspects of Physical Chemistry. Society of Physical Chemists of Serbia, 2024. https://doi.org/10.46793/phys.chem24ii.487ts.

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Animal products are a major source of human exposure to hormones that could be harmful to health if present in elevated concentrations. In this paper, the development and optimization of the liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for the determination of progesterone in chicken eggs were described. Egg samples were prepared using ultrasonic extraction and clean-up with Oasis HLB cartridges. Extracts were analyzed by LC–MS/MS with atmospheric pressure chemical ionization. The developed and optimized method provided high recoveries, with RSDs lower than 4%. The method w

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"The Effects of Mobile Phone Radiation on Serum Levels of Progesterone in Female Rats." In International Conference on Chemical, Agricultural and Medical Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c514061.

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Nurhuda, Rosalina Thuffi, Dwi Ari Pudjianto, et al. "High progesterone levels on the day of hCG administration in controlled ovarian hyperstimulation procedures reduce the expression of progesterone receptors in the endometrium Macaca nemestrina." In THE 4TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, HEALTH, AND MEDICAL DEVICES: Proceedings of the International Symposium of Biomedical Engineering (ISBE) 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5139369.

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Dizay, Kawa, Nsreen Agha, and Begard Omar. "The Impact of Zingiber Officinale Decoction on Thyroid Functions in Hypothyroid-Induced Rats." In 5th International Conference on Biomedical and Health Sciences. Cihan University-Erbil, 2024. http://dx.doi.org/10.24086/biohs2024/paper.1400.

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Background and objective: Zingiber officinale (Ginger) has several pharmacological actions and is extensively employed in traditional medicine for the management of different conditions. This study was designed to evaluate and compare the effects of Ginger with levothyroxine on thyroid function tests and female sex hormone tests in normal and hypothyroid rats. Methods: Forty-two female rats were divided into two groups. The initial group consisted of 12 rats, which were then divided into two smaller groups, each containing 6 rats. The first smaller group acted as a control, while the second su

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Check, Jerome H., Anne Rosenberg, Ann DiAntonio, Hallgeir Rui, Rachael Cohen, and Gabrielle DiAntonio. "Abstract 1281: Serum levels of the immunomodulatory protein, the progesterone induced blocking factor (PIBF) are not higher in women with progesterone (P) receptor (R) positive vs. negative breast cancer." In Proceedings: AACR 106th Annual Meeting 2015; April 18-22, 2015; Philadelphia, PA. American Association for Cancer Research, 2015. http://dx.doi.org/10.1158/1538-7445.am2015-1281.

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McFall, Thomas B., Mugdha Patki, Rayna Rosati, and Manohar Ratnam. "Abstract 5038: Role of the short isoform of the progesterone receptor in hormone-regulated invasiveness of breast cancer cells at pre- and post-menopausal levels of estrogen and progesterone." In Proceedings: AACR 106th Annual Meeting 2015; April 18-22, 2015; Philadelphia, PA. American Association for Cancer Research, 2015. http://dx.doi.org/10.1158/1538-7445.am2015-5038.

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Лебедева, Л. Ф. "THE LEVEL OF HORMONES IN THE BLOOD OF LACTATING AND NON-LACTATING MARES IN THE EARLY STAGES OF PREGNANCY." In СОВРЕМЕННЫЕ ДОСТИЖЕНИЯ И АКТУАЛЬНЫЕ ПРОБЛЕМЫ В КОНЕВОДСТВЕ. Crossref, 2019. http://dx.doi.org/10.25727/hs.2019.1.35385.

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В статье проанализированы уровни прогестерона, 17β-эстрадиола и лошадиного хорионического гонадотропина (ЛХГ) в крови кобыл (n=21) на сроках 25, 35 и 45 дней жеребости, в зависимости от наличия или отсутствия подсосных жеребят (фактор лактации). Прослежены динамика и комплексный характер взаимодействия трех гормонов в период формирования и начала функционирования эндометральных чаш. Все показатели имели высокую индивидуальную вариабельность. Выявлен слегка пониженный уровень прогестерона у подсосных кобыл на фоне более высокой концентрации и более резкого снижения уровня 17β-эстрадиола между 2

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Amorim, Fabline Ribeiro, Mariana Cardoso Silva, Julia Kalida Diniz, and Luciana Vieira Queiroz Labre. "Relationship between tumor-associated macrophages in the tumor microenvironment as prognostic indicators in breast neoplasms." In Brazilian Breast Cancer Symposium 2024. Mastology, 2024. http://dx.doi.org/10.29289/259453942024v34s1060.

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Objective: This study aimed to correlate the presence of tumor-associated macrophages (TAMs) with clinicopathologic characteristics in 82 cases of breast cancer and assess their impact on tumours as possible prognostic markers. Methodology: Cases were selected among the records of anatomopathological examinations carried out at a reference center for cancer treatment. The inclusion criteria were histopathological diagnosis of invasive ductal carcinoma, immunohistochemical profile, clinicopathologic data available in the records, clinical follow-up for 5 years, and enough tumour tissue embedded

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Flote, Vidar G., Hanne Frydenberg, Giske Ursin, et al. "Abstract 1362: Dyslipidemia, excess weight and high mammographic density are associated with high levels of daily estrogen and progesterone. ." In Proceedings: AACR 104th Annual Meeting 2013; Apr 6-10, 2013; Washington, DC. American Association for Cancer Research, 2013. http://dx.doi.org/10.1158/1538-7445.am2013-1362.

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Rapports d'organisations sur le sujet "Progesterone Levels"

Cuenin, Michael F., Michael A. Billman, Benjamin S. Hanson, and Val L. Kudryk. The Effects of Estrogen and Progesterone Levels on Osseointegration of Dental Implants. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada328380.

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Tummaruk, Padet, Junpen Suwimonteerabutr, Wichai Tantasuparuk, Mongkol Techakumphu, and Annop Kunavongkrit. The use of fecal progesterone profile to determine ovarian function in gilts. Chulalongkorn University, 2002. https://doi.org/10.58837/chula.res.2002.64.

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The objectives of the present study were to measure level of fecal progesterone (P4) metabolite in gilts in order to determine the ovarian function in relation to oestrous behaviour. In addition, correlation between plasma and fecal P4 metabolite were also analyzed. Five prepubertal crossbred gilts were included in the experiment. Laparoscopy was used to determine ovarian status in all gilts. Oestrus detection was performed daily and all gilts were allowed to have a direct boar daily. About 10 g of feces was collected either directly from rectum or immediately after defecation and then kept at

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El Halawani, Mohamed, and Israel Rozenboim. Environmental factors affecting the decline in reproductive efficiency of turkey hens: Mediation by vasoactive intestinal peptide. United States Department of Agriculture, 2007. http://dx.doi.org/10.32747/2007.7696508.bard.

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Reproductive failure associated with heat stress is a well known phenomenon in avian species. Increased prolactin (PRL) levels in response to heat stress have been suggested as a mechanism involved in this reproductive malfunction. To test this hypothesis, laying female turkeys were subjected to 40°C for 12 h during the photo-phase daily or maintained at 24–26°C. Birds in each group received oral treatment with parachlorophenyalanine (PCPA; 50 mg/kg BW/day for 3 days), an inhibitor of serotonin (5-HT) biosynthesis; or immunized against vasoactive intestinal peptide (VIP). Both treatments are k

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Wolfenson, David, William W. Thatcher, Rina Meidan, Charles R. Staples, and Israel Flamenbaum. Hormonal and Nutritional Stretegies to Optimize Reproductive Function and Improve Fertility of Dairy Cattle during Heat Stress in Summer. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568773.bard.

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The BARD program includes two main parts. In the first, experiments were conducted to complete our understanding of the mechanisms responsible for the impairment of reproductive functions under heat stress. Experiments focused on follicular development and function, since results obtained in our previous BARD project indicate that the preovulatory follicle is susceptible to heat stress. The theca cells, sensitive to thermal stress, produced less androgen during the summer, as well as during the autumn. Similarly, luteinized theca cells obtained from cows in summer produced much less progestero

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Wolfenson, David, William W. Thatcher, and James E. Kinder. Regulation of LH Secretion in the Periovulatory Period as a Strategy to Enhance Ovarian Function and Fertility in Dairy and Beef Cows. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586458.bard.

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The general research objective was to increase herd pregnancy rates by enhancing corpus luteum (CL) function and optimizing follicle development, in order to increase conception rate and embryo survival. The specific objectives were: to determine the effect of the duration of the preovulatory LH surge on CL function; to determine the function of LH during the postovulatory period on CL development; to optimize CL differentiation and follicle development by means of a biodegradable GnRH implant; to test whether optimization of CL development and follicle dynamics in timed- insemination protocol

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Meidan, Rina, and Robert Milvae. Regulation of Bovine Corpus Luteum Function. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604935.bard.

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The main goal of this research plan was to elucidate regulatory mechanisms controlling the development, function of the bovine corpus luteum (CL). The CL contains two different sterodigenic cell types and therefore it was necessary to obtain pure cell population. A system was developed in which granulosa and theca interna cells, isolated from a preovulatory follicle, acquired characteristics typical of large (LL) and small (SL) luteal cells, respectively, as judged by several biochemical and morphological criteria. Experiments were conducted to determine the effects of granulosa cells removal

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Hansen, Peter J., and Zvi Roth. Use of Oocyte and Embryo Survival Factors to Enhance Fertility of Heat-stressed Dairy Cattle. United States Department of Agriculture, 2011. http://dx.doi.org/10.32747/2011.7697105.bard.

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The overall goal was to identify survival factors that can improve pregnancy success following insemination or embryo transfer in lactating dairy cows exposed to heat stress. First, we demonstrated that oocytes are actually damaged by elevated temperature in the summer. Then we tested two thermoprotective molecules for their effect on oocyte damage caused by heat shock. One molecule, ceramide was not thermoprptective. Another, insulin-like growth factor-1 (IGF) reduced the effects of heat shock on oocyte apoptosis and oocyte cleavage when added during maturation. We also used lactating cows ex

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