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Journal articles on the topic 'Ovarian Follicular Development'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Leung, Peter C. K. "Ovarian follicular development and regression." Canadian Journal of Physiology and Pharmacology 67, no. 8 (1989): 953. http://dx.doi.org/10.1139/y89-149.

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Many exciting developments in mammalian reproductive research with far-reaching consequences have occurred in recent years. To highlight the significance of some of these developments, a symposium on the theme of ovarian follicular development and regression was organized, and held at the joint meeting of the American Physiological Society and the Canadian Physiological Society, in Montréal in October 1988. Several leading researchers, from both Canada and the U.S.A., in various aspects of ovarian research, participated in the symposium. The topics of discussion ranged from the role of growth

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2

Sobinoff, A. P., V. Pye, B. Nixon, S. D. Roman, and E. A. McLaughlin. "153. XENOBIOTICS; INFLUENCE ON OVARIAN FOLLICULAR DEVELOPMENT." Reproduction, Fertility and Development 21, no. 9 (2009): 71. http://dx.doi.org/10.1071/srb09abs153.

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The mammalian female reproductive lifespan is largely defined by a finite pool of ovarian follicles established around the time of birth. It is now understood that certain synthetic chemical compounds, known as xenobiotics, can cause premature ovarian senescence through the destruction of small ovarian follicles. Although the ovotoxic effects of these chemicals are well documented, the exact molecular mechanisms behind their action are only just becoming understood. Recent evidence suggests that bioactivation of xenobiotics by Phase I detoxifying enzymes may lead to the generation of free oxyg

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3

Segino, Miwa, Mario Ikeda, Fumiki Hirahara, and Kahei Sato. "In vitro follicular development of cryopreserved mouse ovarian tissue." Reproduction 130, no. 2 (2005): 187–92. http://dx.doi.org/10.1530/rep.1.00515.

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In a previous report, we showed that follicles isolated from frozen/thawed mouse ovarian tissues reached the mature follicle stage on the 12th day of culture. However, the developmental ability was lower than that of fresh ovarian tissue. The purpose of this study was to define a culture system with some technical modification for preantral follicles isolated from frozen/thawed ovarian tissue and to confirm cell injury. Ovaries obtained from three-week-old female mice were cryopreserved by the rapid freezing method. Preantral follicles isolated from frozen/thawed ovarian tissues were cultured

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4

van der Schoot, P., and W. J. de Greef. "Development of ovarian follicles during lactation in rats." Acta Endocrinologica 112, no. 2 (1986): 247–52. http://dx.doi.org/10.1530/acta.0.1120247.

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Abstract. Ovarian follicular development was studied during lactation in rats. At an early stage of lactation (day 7) the ovaries showed only small follicles in agreement with the expected 'follicular quiescence' during lactation. However, at a more advanced stage of lactation (day 14), there were large follicles which were capable of ovulation in response to exogenous gonadotropins. Unilateral ovariectomy early during lactation (day 2) resulted in compensatory follicular development in the remaining ovary. However, doubling of the number of large follicles per ovary had not yet occurred by da

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5

Kim, Yu Jin, YoungJoon Park, Yeo Reum Park, et al. "Role of RGMc as a Neogenin Ligand in Follicular Development in the Ovary." Biomedicines 9, no. 3 (2021): 280. http://dx.doi.org/10.3390/biomedicines9030280.

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There is currently no cure for infertility in women with a poor ovarian response (POR). Neogenin is reported to be abundantly expressed in the ovary; however, its role in mammalian follicular development is unclear and its ligand and signaling pathway remain uncertain. We systematically investigated the role of neogenin and the ligand repulsive guidance molecule c (RGMc) during follicular development. We treated hyperstimulated mouse ovaries with RGMc and analyzed follicular development. Furthermore, we investigated clusters of up/downregulated genes in RGMc-treated ovaries using whole-transcr

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6

Rodgers, R. J., T. C. Lavranos, I. L. van Wezel, and H. F. Irving-Rodgers. "Development of the ovarian follicular epithelium." Molecular and Cellular Endocrinology 151, no. 1-2 (1999): 171–79. http://dx.doi.org/10.1016/s0303-7207(99)00087-8.

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7

Maddineni, Sreenivasa R., Olga M. Ocón-Grove, Susan M. Krzysik-Walker, Gilbert L. Hendricks, and Ramesh Ramachandran. "Gonadotropin-inhibitory hormone (GnIH) receptor gene is expressed in the chicken ovary: potential role of GnIH in follicular maturation." REPRODUCTION 135, no. 2 (2008): 267–74. http://dx.doi.org/10.1530/rep-07-0369.

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Gonadotropin-inhibitory hormone (GnIH), an RFamide peptide, has been found to inhibit pituitary LH secretion in avian and mammalian species. The gene encoding a putative receptor for GnIH (GnIHR) was recently identified in the chicken and Japanese quail brain and pituitary gland. GnIHR appears to be a seven-transmembrane protein belonging to a family of G-protein-coupled receptors. In the present study, we have characterized the expression of GnIHR mRNA in the chicken ovary and demonstrate that GnIHR may exert an inhibitory effect on ovarian follicular development. By RT-PCR, we detected GnIHR

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8

Cha, KY, BR Do, HJ Chi, et al. "Viability of Human Follicular Oocytes Collected from Unstimulated Ovaries and Matured and Fertilized in vitro." Reproduction, Fertility and Development 4, no. 6 (1992): 695. http://dx.doi.org/10.1071/rd9920695.

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Immature human follicular oocytes were collected from unstimulated ovaries, matured and fertilized in vitro and then transferred to patients with no ovarian dysfunction such as premature ovarian failure. From 11 1 consenting donors, 422 immature oocytes were collected from 97 ovaries between January 1990 and October 1991. The number of oocytes collected from ovaries and their development were recorded so that comparisons could be made among donors of different ages and ovarian condition, such as menstrual cycle, cyclic and non-cyclic ovaries. The rate of fertilization in vitro showed a peak in

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9

Shi, Xuan, Tao Tang, Qiyuan Lin, et al. "Efficient generation of bone morphogenetic protein 15-edited Yorkshire pigs using CRISPR/Cas9†." Biology of Reproduction 103, no. 5 (2020): 1054–68. http://dx.doi.org/10.1093/biolre/ioaa138.

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Abstract Bone morphogenetic protein 15 (BMP15), a member of the transforming growth factor beta superfamily, plays an essential role in ovarian follicular development in mono-ovulatory mammalian species. Studies using a biallelic knockout mouse model revealed that BMP15 potentially has just a minimal impact on female fertility and ovarian follicular development in polyovulatory species. In contrast, our previous study demonstrated that in vivo knockdown of BMP15 significantly affected porcine female fertility, as evidenced by the dysplastic ovaries containing significantly decreased numbers of

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10

Zhou, Jiawei, Xianwen Peng, and Shuqi Mei. "Autophagy in Ovarian Follicular Development and Atresia." International Journal of Biological Sciences 15, no. 4 (2019): 726–37. http://dx.doi.org/10.7150/ijbs.30369.

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11

Fortune, J. E. "Ovarian Follicular Growth and Development in Mammals1." Biology of Reproduction 50, no. 2 (1994): 225–32. http://dx.doi.org/10.1095/biolreprod50.2.225.

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12

Douglas, D. A., R. A. Pierson, and B. D. Murphy. "Ovarian follicular development in mink (Mustela vison)." Reproduction 100, no. 2 (1994): 583–90. http://dx.doi.org/10.1530/jrf.0.1000583.

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13

Katabuchi, Hidetaka, Yukitoshi Fukumatsu, Masako Araki, Yoshito Suenaga, Hideyuki Ohtake, and Hitoshi Okamura. "Role of Macrophages in Ovarian Follicular Development." Hormone Research 46, no. 1 (1996): 45–51. http://dx.doi.org/10.1159/000185181.

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14

MIYAMOTO, Hajime, Eisaku YOSHIDA, Yoshimasa OTSUKA, and Takehiko ISHIBASHI. "Ovarian follicular development in the pregnant rat." Japanese journal of animal reproduction 33, no. 3 (1987): 117–22. http://dx.doi.org/10.1262/jrd1977.33.117.

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15

Hazzard, Timothy M., and Richard L. Stouffer. "Angiogenesis in ovarian follicular and luteal development." Best Practice & Research Clinical Obstetrics & Gynaecology 14, no. 6 (2000): 883–900. http://dx.doi.org/10.1053/beog.2000.0133.

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16

Dissen, Gregory A., Cecilia Garcia-Rudaz, Alfonso Paredes, Christine Mayer, Artur Mayerhofer, and Sergio R. Ojeda. "Excessive Ovarian Production of Nerve Growth Factor Facilitates Development of Cystic Ovarian Morphology in Mice and Is a Feature of Polycystic Ovarian Syndrome in Humans." Endocrinology 150, no. 6 (2009): 2906–14. http://dx.doi.org/10.1210/en.2008-1575.

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Although ovarian nerve growth factor (NGF) facilitates follicular development and ovulation, an excess of the neurotrophin in the rodent ovary reduces ovulatory capacity and causes development of precystic follicles. Here we show that ovarian NGF production is enhanced in patients with polycystic ovarian syndrome (PCOS) and that transgenically driven overproduction of NGF targeted to the ovary results in cystic morphology, when accompanied by elevated LH levels. NGF levels are increased in the follicular fluid from PCOS ovaries and in the culture medium of granulosa cells from PCOS patients, a

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17

Zyuzyun, A. B. "CYTOMORPHOLOGICAL RESEARCH OTSYT-CUMULUS COMPLEXES RABBIT FROM WITH OVARIAN AT DIFFERENT STAGES OF THE ESTROUS CYCLE." Animal Breeding and Genetics 53 (April 27, 2017): 279–84. http://dx.doi.org/10.31073/abg.53.39.

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The analysis of the research results revealed that the largest number (86.4%) of oocytes suitable for further development outside the body can be obtained with ovarian follicular phase of growth. It should be noted that statistically significant difference was observed between the groups OCC rabbit derived from ovaries at different phases of the estrous cycle by the number oocytes unsuitable for further cultivation. Thus, the phase of the ovarian follicular growth of gametes was obtained only 13.6% of ovarian and with signs of ovulation and the luteal phase, 35.4% and 31.4% respectively. When

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18

Zhang, Zheng Hong, Fan Wang, Yan Qing Wu, et al. "Effects of Echinomycin on PCNA-Dependent Follicular Development in PMSG-Induced Sprague-Dawley Rats." Advanced Materials Research 998-999 (July 2014): 228–32. http://dx.doi.org/10.4028/www.scientific.net/amr.998-999.228.

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Echinomycin (Ech) is a small-molecule inhibitor of hypoxia-inducible factor-1 DNA-binding activity, which plays a crucial role in the regulation of ovarian functions in mammals. The present study was designed to test the hypothesis that hypoxia-inducible factor (HIF)-1alpha-mediated proliferation cell nuclear antigen (PCNA) expressions contributed to the follicular development in the rat ovary primed by pregnant mare serum gonadotropin (PMSG). Through the histological examination, the decrease of growing and antral follicle numbers was found after Ech treatment both in control and PMSG treated

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19

Fernandois, D., E. Na, F. Cuevas, G. Cruz, H. E. Lara, and A. H. Paredes. "Kisspeptin is involved in ovarian follicular development during aging in rats." Journal of Endocrinology 228, no. 3 (2015): 161–70. http://dx.doi.org/10.1530/joe-15-0429.

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We have previously reported that kisspeptin (KP) may be under the control of the sympathetic innervation of the ovary. Considering that the sympathetic activity of the ovary increases with aging, it is possible that ovarian KP also increases during this period and participates in follicular development. To evaluate this possibility, we determined ovarian KP expression and its action on follicular development during reproductive aging in rats. We measured ovarian KP mRNA and protein levels in 6-, 8-, 10- and 12-month-old rats. To evaluate follicular developmental changes, intraovarian administr

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20

Wei, Li, Meng, Zhang, Shen, and Liu. "Corticosterone Injection Impairs Follicular Development, Ovulation and Steroidogenesis Capacity in Mice Ovary." Animals 9, no. 12 (2019): 1047. http://dx.doi.org/10.3390/ani9121047.

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The aim of this study is to establish an ovarian stress model, and to investigate the effects of stress on follicular development. Our data showed that continuous intraperitoneal injection of CORT successfully created a stressful environment in the ovary. To assess the effects of CORT on ovarian functions, 80 three-week-old ICR (Institute of Cancer Research) female mice were randomly divided into control group and treatment group. All mice were injected intraperitoneally with pregnant horse serum gonadotropin (PMSG). At the same time, the treatment group were injected with CORT (1 mg/mouse) at

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21

Juengel, Jennifer L., Norma L. Hudson, Martin Berg, et al. "Effects of active immunization against growth differentiation factor 9 and/or bone morphogenetic protein 15 on ovarian function in cattle." REPRODUCTION 138, no. 1 (2009): 107–14. http://dx.doi.org/10.1530/rep-09-0009.

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Growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) are essential for ovarian follicular growth in sheep, whereas only GDF9 is essential in mice suggesting that the roles of these oocyte-derived growth factors differ among species. At present, however, there is only limited information on the action of BMP15 and GDF9 in other species. Thus, the aim of this experiment was to determine the effect of neutralizing GDF9 and/or BMP15in vivoon ovarian follicular development and ovulation rate in cattle through active immunization using the mature regions of the proteins o

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22

Grasa, P., S. Sheikh, N. Krzys, et al. "Dysregulation of follicle development in a mouse model of premature ovarian insufficiency." Reproduction 152, no. 5 (2016): 591–601. http://dx.doi.org/10.1530/rep-16-0091.

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Premature ovarian insufficiency (POI) occurs in 1% of reproductive-age women. The ovarian manifestation ranges from the presence of a variable population of follicles (follicular) to the absence of follicles (afollicular), and in the majority of cases the cause is unknown. A transgenic mouse model of follicular POI, the Double Mutant (DM), arises from oocyte-specific deletion ofMgat1andC1galt1required for the generation ofO- andN-glycans. DM females are subfertile at 6 weeks, infertile by 9 weeks and exhibit POI by 12 weeks of age. In this study we investigate the cause of the reduced fertilit

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23

Juengel, Jennifer L., Derek A. Heath, Laurel D. Quirke та Kenneth P. McNatty. "Oestrogen receptor α and β, androgen receptor and progesterone receptor mRNA and protein localisation within the developing ovary and in small growing follicles of sheep". Reproduction 131, № 1 (2006): 81–92. http://dx.doi.org/10.1530/rep.1.00704.

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A first step to elucidating the roles that steroids may play in the processes of ovarian development and early follicular growth is to identify the cell types that are likely to be receptive to steroids. Thus, cell types expressing receptors for oestrogen (α and β form; ERα and ERβ respectively), androgen (AR) and progesterone (PR) were determined by in situ hybridisation and immunohistochemistry in ovine ovarian tissues collected during ovarian development and follicular formation (days 26–75 of fetal life) as well as during the early stages of follicular growth. Expression of ERβ was observe

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24

Carlsson, Inger B., Mika P. E. Laitinen, Jennifer E. Scott, et al. "Kit ligand and c-Kit are expressed during early human ovarian follicular development and their interaction is required for the survival of follicles in long-term culture." Reproduction 131, no. 4 (2006): 641–49. http://dx.doi.org/10.1530/rep.1.00868.

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The receptor tyrosine c-Kit and its cognate ligand, c-Kit ligand (KL, stem cell factor, SCF), are involved in ovarian follicular development in several animal species. We studied the expression of KL and c-Kit usingin situhybridization and immunohistochemistry in donated human ovarian cortical tissue. The KL transcripts were expressed in granulosa cells of primary follicles, whereas the expression of c-Kit was confined to the oocyte and granulosa cells in primary and secondary follicles. We employed an ovarian organ culture using firstly serum-containing and then serum-free medium to study the

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25

Zhang, Lingna, Tao Feng, and Leon J. Spicer. "The role of tight junction proteins in ovarian follicular development and ovarian cancer." Reproduction 155, no. 4 (2018): R183—R198. http://dx.doi.org/10.1530/rep-17-0503.

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Tight junctions (TJ) are protein structures that control the transport of water, ions and macromolecules across cell layers. Functions of the transmembrane TJ protein, occluding (OCLN) and the cytoplasmic TJ proteins, tight junction protein 1 (TJP1; also known as zona occludens protein-1), cingulin (CGN) and claudins (CLDN) are reviewed, and current evidence of their role in the ovarian function is reviewed. Abundance ofOCLN,CLDNsandTJP1mRNA changed during follicular growth.In vitrotreatment with various growth factors known to affect ovarian folliculogenesis indicated thatCGN,OCLNandTJP1are h

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26

Souza, CJ, BK Campbell, and DT Baird. "Follicular waves and concentrations of steroids and inhibin A in ovarian venous blood during the luteal phase of the oestrous cycle in ewes with an ovarian autotransplant." Journal of Endocrinology 156, no. 3 (1998): 563–72. http://dx.doi.org/10.1677/joe.0.1560563.

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The dynamics of ovarian follicular development and the pattern of pituitary and ovarian hormone concentration were investigated during the luteal phase in ewes with autotransplanted ovaries. The follicles were measured by ultrasound and samples of ovarian and jugular venous blood were collected at intervals of 12 h. Blood samples were collected before and after a GnRH challenge (250 ng GnRH, i.v.) to allow the determination of basal and LH-stimulated concentration of ovarian steroids. Throughout the luteal phase, large antral follicles developed in three waves, each of which was preceded by a

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27

Bhattarai, Manoj. "Monitoring of Ovarian Follicular Development and Ovulation with Transvaginal Sonography (TVS) in Infertile Women in Eastern Region of Nepal." Journal of Nobel Medical College 5, no. 1 (2016): 43–48. http://dx.doi.org/10.3126/jonmc.v5i1.15764.

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Background Ultrasonography is the first line imaging modality for evaluation of ovaries, monitoring ovarian follicular development and detecting ovulation in infertile women; thus plays a significant role in infertility management. This study was undertaken to evaluate the pattern of ovarian follicular growth and to predict and detect ovulation in infertile women by transvaginal sonography in eastern region of Nepal.Material and Methods Hospital based prospective cross-sectional study on 100 infertile patients referred for ultrasonographic monitoring of ovarian follicle was conducted over dura

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28

Hillier, S. G. "Gonadotropic control of ovarian follicular growth and development." Molecular and Cellular Endocrinology 179, no. 1-2 (2001): 39–46. http://dx.doi.org/10.1016/s0303-7207(01)00469-5.

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29

GIUDICE, LINDA C. "Insulin-Like Growth Factors and Ovarian Follicular Development*." Endocrine Reviews 13, no. 4 (1992): 641–69. http://dx.doi.org/10.1210/edrv-13-4-641.

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30

KAGABU, SATOSI, and MOTOAKI UMEZU. "Ovarian follicular development in the unilateral ovariectomized rat." Reproductive Medicine and Biology 4, no. 1 (2005): 89–92. http://dx.doi.org/10.1111/j.1447-0578.2005.00091.x.

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31

Guilbault, L. A., J. J. Dufour, W. W. Thatcher, M. Drost, and G. K. Haibel. "Ovarian follicular development during early pregnancy in cattle." Reproduction 78, no. 1 (1986): 127–35. http://dx.doi.org/10.1530/jrf.0.0780127.

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32

Gosden, R. G., M. I. Boulton, K. Grant, and R. Webb. "Follicular development from ovarian xenografts in SCID mice." Reproduction 101, no. 3 (1994): 619–23. http://dx.doi.org/10.1530/jrf.0.1010619.

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33

Giudice, L. C. "Insulin-like growth factors and ovarian follicular development." Endocrine Reviews 13, no. 4 (1992): 641–69. http://dx.doi.org/10.1210/er.13.4.641.

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34

Kagabu, Satosi, and Motoaki Umezu. "Ovarian follicular development in the unilateral ovariectomized rat." Reproductive Medicine and Biology 4, no. 1 (2005): 89–92. http://dx.doi.org/10.1007/bf03016142.

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35

Shoupe, D., J. Horenstein, DR Mishell, M. Lacarra, and A. Medearis. "Characteristics of ovarian follicular development in Norplant users." International Journal of Gynecology & Obstetrics 37, no. 3 (1992): 236. http://dx.doi.org/10.1016/0020-7292(92)90412-c.

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36

Irving-Rodgers, Helen F., and Raymond J. Rodgers. "Extracellular matrix in ovarian follicular development and disease." Cell and Tissue Research 322, no. 1 (2005): 89–98. http://dx.doi.org/10.1007/s00441-005-0042-y.

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37

Zhang, Xiaoxin, Lei Zhang, Shuying Huo, Jianlin Wang, and Sheng Cui. "Neonatal superior ovarian nerve transection inhibits follicle development by enhancing follicular atresia and suppressing granulosa cell proliferation in rats." Reproduction, Fertility and Development 22, no. 7 (2010): 1148. http://dx.doi.org/10.1071/rd09271.

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The ovarian sympathetic nerves participate in the regulation of mammalian ovarian function, but it is still not known whether the neonatal ovarian sympathetic nerve is involved in follicular development and related mechanisms. In the present study, the superior ovarian nerve (SON) of the neonatal rat was transected on postnatal day (PD) 2, and follicle development, ovarian hormone secretion, ovulation rate, granulosa cell proliferation and apoptosis were analysed on PD 30 and PD 90. The results demonstrate that SON transection decreases follicle number and size, reduces ovulation induced by go

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Jo, Misung, Mary C. Gieske, Charles E. Payne, et al. "Development and Application of a Rat Ovarian Gene Expression Database." Endocrinology 145, no. 11 (2004): 5384–96. http://dx.doi.org/10.1210/en.2004-0407.

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Abstract The pituitary gonadotropins play a key role in follicular development and ovulation through the induction of specific genes. To identify these genes, we have constructed a genome-wide rat ovarian gene expression database (rOGED). The database was constructed from total RNA isolated from intact ovaries, granulosa cells, or residual ovarian tissues collected from immature pregnant mare serum gonadotropin (PMSG)/human chorionic gonadotropin-treated rats at 0 h (no PMSG), 12 h, and 48 h post PMSG, as well as 6 and 12 h post human chorionic gonadotropin. The total RNA was used for DNA micr

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McNatty, Kenneth P., Derek A. Heath, Norma L. Hudson, et al. "The conflict between hierarchical ovarian follicular development and superovulation treatment." REPRODUCTION 140, no. 2 (2010): 287–94. http://dx.doi.org/10.1530/rep-10-0165.

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In mammals with a low ovulation rate phenotype, ovarian follicular development is thought to be hierarchical with few, if any, antral follicles at similar stages of development. The hypothesis being tested herein was that if most follicles are in a functionally different state, then the application of exogenous hormones to increase ovulation rate will not overcome the hierarchical nature of follicular development. Using sheep as the experimental model, the functional states of all non-atretic antral follicles ≥2 mm diameter were assessed in individual ewes (N=10/group) during anoestrus with or

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Garrido, Maritza P., Daniela Fernandois, Mauricio Venegas, and Alfonso H. Paredes. "Effects of sympathectomy on ovarian follicular development and steroid secretion." Reproduction 155, no. 2 (2018): 171–79. http://dx.doi.org/10.1530/rep-17-0318.

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Recently, the influence of adrenergic activity over ovarian function, and thus fertility, has begun to gain importance. Previous studies have shown that adrenergic activity through norepinephrine (NE) participates in the control of follicular development and steroidal secretion from the ovary, among other functions. To examine this phenomenon, the denervation of the gonad has been widely used to observe changes in the ovary’s performance. Nevertheless, the effect of the absence of adrenergic nerves in the ovary has only been studied in short times periods. In the present work, we used guanethi

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41

Tisdall, D. J., K. Watanabe, N. L. Hudson, P. Smith, and K. P. McNatty. "FSH receptor gene expression during ovarian follicle development in sheep." Journal of Molecular Endocrinology 15, no. 3 (1995): 273–81. http://dx.doi.org/10.1677/jme.0.0150273.

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ABSTRACT A key question in elucidating the role of FSH in ovarian function is to determine when during follicular growth the FSH receptor first appears. The aim of this study was to examine the site and time of FSH receptor gene expression during early follicular growth. This study was carried out on ovaries of adult sheep during the luteal and prostaglandin-induced follicular phase of the oestrous cycle and also on ovaries of fetal sheep at 90, 100, 120 and 135 days of gestation (term=day 147). Using reverse transcription-PCR and a set of PCR primers spanning exons 8/9/10, two partial FSH rec

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Huang, Qin, Yannan Liu, Zhen Yang, Yuanjie Xie, and Zhongcheng Mo. "The Effects of Cholesterol Metabolism on Follicular Development and Ovarian Function." Current Molecular Medicine 19, no. 10 (2019): 719–30. http://dx.doi.org/10.2174/1566524019666190916155004.

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: Cholesterol is an important substrate for the synthesis of ovarian sex hormones and has an important influence on follicular development. The cholesterol in follicular fluid is mainly derived from plasma. High-density lipoprotein (HDL) and lowdensity lipoprotein (LDL) play important roles in ovarian cholesterol transport. The knockout of related receptors in the mammalian HDL and LDL pathways results in the reduction or absence of fertility, leading us to support the importance of cholesterol homeostasis in the ovary. However, little is known about ovarian cholesterol metabolism and the comp

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Rajareddy, Singareddy, Pradeep Reddy, Chun Du, et al. "p27kip1 (Cyclin-Dependent Kinase Inhibitor 1B) Controls Ovarian Development by Suppressing Follicle Endowment and Activation and Promoting Follicle Atresia in Mice." Molecular Endocrinology 21, no. 9 (2007): 2189–202. http://dx.doi.org/10.1210/me.2007-0172.

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Abstract In humans, the molecular mechanisms underlying ovarian follicle endowment and activation, which are closely related to the control of female reproduction, occurrence of menopause, and related diseases such as premature ovarian failure, are poorly understood. In the current study, we provide several lines of genetic evidence that the cyclin-dependent kinase (Cdk) inhibitor 1B (commonly known as p27kip1 or p27) controls ovarian development in mice by suppressing follicle endowment and activation, and by promoting follicle death. In p27-deficient (p27−/−) mice, postnatal follicle assembl

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Di Pietro, Mariana, Natalia Pascuali, Fernanda Parborell, and Dalhia Abramovich. "Ovarian angiogenesis in polycystic ovary syndrome." Reproduction 155, no. 5 (2018): R199—R209. http://dx.doi.org/10.1530/rep-17-0597.

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Polycystic ovary syndrome (PCOS) is the most prevalent endocrine pathology among women in reproductive age. Its main symptoms are oligo or amenorrhea, hyperandrogenism and the presence of ovarian cysts. It is also associated with infertility, obesity and insulin resistance. Mainly due to its heterogeneity, PCOS treatments are directed to manage its symptoms and to prevent associated diseases. The correct formation and regression of blood vessels during each ovarian cycle is indispensable for proper follicular development, ovulation and corpus luteum formation. The importance of these processes

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Taylor, P. D., S. G. Hillier, and H. M. Fraser. "Effects of GnRH antagonist treatment on follicular development and angiogenesis in the primate ovary." Journal of Endocrinology 183, no. 1 (2004): 1–17. http://dx.doi.org/10.1677/joe.1.05685.

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Angiogenesis is required for normal follicular development but the role of gonadotrophins in the control of follicular angiogenesis remains to be elucidated. This study investigated the effects of treatment with GnRH antagonist in vivo on follicular development and angiogenesis in the marmoset. GnRH antagonist was administered on either follicular day 0 or day 5 of the 10-day follicular phase with ovaries collected on day 10. Ovaries from control marmosets were studied at day 5 (mid follicular phase) and day 10 (periovulatory period). Ovaries were fixed, serial sectioned and subjected to morph

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Zenkina, V. G. "Formation of ovarian reserve." Bulletin of Siberian Medicine 17, no. 3 (2018): 197–206. http://dx.doi.org/10.20538/1682-0363-2018-3-197-206.

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The review of the literature is devoted to modern data on the formation of the ovarian reserve of the female sexual organ. The relationship between the size of the ovarian reserve and length of reproductive capacity emphasizes the importance of understanding the regulatory factors and processes that determine its creation. We described ovarian reserve markers and regulators such as oocyte phosphotidylinositol-3-kinase, a stem-cell factor (kit ligand) that promote the survival of follicles during neonatal development, synaptonemic complex (SCP3), which is the marker of the first division of mei

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Rivera, O. E., J. Varayoud, H. A. Rodríguez, C. E. Di Mauro, M. Muãoz-de-Toro, and E. H. Luque. "221 XENOESTROGENS EXPOSURE AT ENVIRONMENTALLY RELEVANT DOSES ADVERSELY AFFECTS OVINE FOLLICULAR DEVELOPMENT." Reproduction, Fertility and Development 22, no. 1 (2010): 268. http://dx.doi.org/10.1071/rdv22n1ab221.

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The exposure to endocrine disrupters may affect reproduction. Our hypothesis suggested that neonatal endocrine disrupter exposure affects ovarian ovine development. Female lambs were s.c. exposed from postnatal Day (PND) 1 to PND 14 to environmentally relevant doses of diethylstilbe- strol (DES; 5 μg kg-1, n = 11), bisphenol A (BPA; 50 μg kg-1, n = 11), or vehicle [control (C), n = 14]. On PND 30, the ovaries were weighed and paraffin-embedded. The whole ovaries were sectioned in sets of 4 adjacent 5-μm serial sections taken 200 μm apart. Follicular dynamics were established by histomorphologi

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Zhang, Baoyun, Long Chen, Guangde Feng, et al. "MicroRNA Mediating Networks in Granulosa Cells Associated with Ovarian Follicular Development." BioMed Research International 2017 (2017): 1–18. http://dx.doi.org/10.1155/2017/4585213.

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Ovaries, which provide a place for follicular development and oocyte maturation, are important organs in female mammals. Follicular development is complicated physiological progress mediated by various regulatory factors including microRNAs (miRNAs). To demonstrate the role of miRNAs in follicular development, this study analyzed the expression patterns of miRNAs in granulosa cells through investigating three previous datasets generated by Illumina miRNA deep sequencing. Furthermore, via bioinformatic analyses, we dissected the associated functional networks of the observed significant miRNAs,

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Robinson, G., J. J. Evans, and M. E. Forster. "Oxytocin can affect follicular development in the adult mouse." Acta Endocrinologica 108, no. 2 (1985): 273–76. http://dx.doi.org/10.1530/acta.0.1080273.

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Abstract. Injection of oxytocin into normal adult cycling mice caused alterations in ovarian histology. Oxytocin was administered early on the day of pro-oestrus and it induced the appearance of large numbers of corpora lutea by late pro-oestrus, suggesting oxytocin stimulated ovulation. When mice were examined very early on the day of normal oestrus the ovarian population of follicles was different in the experimental group from that in the control mice, there being increased numbers of preantral and antral follicles in treated animals. As oxytocin can cause an alteration in the timing of fol

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Hosseini, Marzieh, Saghar Salehpour, Marefat Ghaffari Novin, Zahra Shams Mofarahe, Mohammad-Amin Abdollahifar, and Abbas Piryaei. "Improvement of in situ Follicular Activation and Early Development in Cryopreserved Human Ovarian Cortical Tissue by Co-Culturing with Mesenchymal Stem Cells." Cells Tissues Organs 208, no. 1-2 (2019): 48–58. http://dx.doi.org/10.1159/000506303.

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Follicular loss and tissue degeneration are great challenges in ovarian tissue culture systems. Mesenchymal stem cells (MSC) secrete a cocktail of growth factors and cytokines which supports adjacent cells and tissues. The aim of the current study was to investigate the impact of human bone marrow (hBM)-MSC, as co-culture cells, on human follicular development in ovarian cortical tissue (OCT) culture. For this purpose, warmed OCT fragments were co-cultured with hBM-MSC for 8 days and compared to monocultured OCT. During the culture period, ovarian follicle survival and development in the OCT w

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