Results 41 to 50 of about 6,106 (203)

Characterization of isolated late preantral and early antral equine ovarian follicles

Reproduction and Fertility
Understanding how to effectively isolate a large number of healthy follicles is essential for increasing success rates in ARTs, such as in vitro culture and cryopreservation.
Ana Normélia P Morais, Gustavo D A Gastal, Francisco L N Aguiar, Kendall A Hyde, Melba O Gastal, Laritza F Lima, Lucy V S Ñaupas, Ana Flávia B Silva, Verónica A B Becerra, Luiza Gheno, Bruna R Curcio, Carine D Corcini, Ana Paula R Rodrigues, José R Figueiredo, Antonio S Varela Jr, Eduardo L Gastal   +15 more
doaj   +1 more source

Fosl2 Regulates FSH‐Dependent Follicle Maturation Through Feedback Amplification of FSH/FSHR Signaling

Advanced Science, Volume 13, Issue 37, 3 July 2026.
This study identifies a FOSL2‐driven positive feedback loop that amplifies FSH/FSHR signaling. During FSH‐dependent follicle maturation, FSH induces Fosl2 expression via the cAMP‐PKA‐CREB cascade. FOSL2 in turn binds the promoters of Fshr and estrogen‐biosynthesis genes to enhance their transcription, thereby increasing Fshr mRNA level and amplifying ...
Hongru Shi, Chaoli Chen, Zaohong Ran, Jianning Liao, Zian Wu, Xiaodong Wang, Yongheng Zhao, Wenkai Ke, Bowen Tan, Yun Liu, Youqiang Su, Wei Ren, Xiang Li, Changjiu He   +13 more
wiley   +1 more source

Should we isolate human preantral follicles before or after cryopreservation of ovarian tissue? [PDF]

, 2013
To evaluate the survival and growth potential of human preantral follicles isolated before and after ...
Camboni, Alessandra, Van Langendonckt, Anne, Dolmans, Marie-Madeleine, Donnez, Jacques, Amorim, Christiani, Luyckx, Valérie, Vanacker, Julie   +6 more
core   +1 more source

The Regulation of Apoptosis in Preantral Ovarian Follicles

Neurosignals, 2000
Less than 1% of ovarian follicles ever mature to ovulation. The remainder undergo atretic degeneration via apoptosis during development. Though the regulation of antral and preovulatory survival has been studied for many years, very little is known about the regulation of survival and development of preantral follicles.
openaire   +2 more sources

Circulating Anti‐Müllerian Hormone Reflects the Medium Antral Follicle Pool Following Histological Redefinition of Follicle Size in the Common Marmoset (Callithrix jacchus)

Journal of Medical Primatology, Volume 55, Issue 3, June 2026.
ABSTRACT Background Anti‐Müllerian hormone is widely used as a marker of ovarian reserve, but its stage‐specific follicular origin remains unclear in the common marmoset (Callithrix jacchus). Methods Follicle diameters were reassessed histologically, and plasma anti‐Müllerian hormone concentrations were measured using an ultrasensitive enzyme‐linked ...
Dong‐Won Seol, Chan seul Kim, Jee‐Hyun Choi, Cheoljin Park, Woonghee Lee, Hee Jun Lee, Seon A Noh, Sun‐Won Lee, Jinsoo Lee, Chan‐Wook Park, Kyoung‐Sun Lee   +10 more
wiley   +1 more source

Isolamento mecânico de folículos ovarianos pré-antrais em cabras Mechanical isolation of ovarian preantral follicles in the goat

Ciência Rural, 1998
Com o objetivo de isolar mecanicamente folículos pré-antrais caprinos, 52 ovários de cabras sem raça definida (SRD) foram coletados em matadouros ou extraídos por ovariectomia.
Ana Paula Ribeiro Rodrigues, Christiani Andrade Amorim, Carolina Madeira Lucci, José Ricardo de Figueiredo, Paulo Bayard Dias Gonçalves, Assis Roberto de Bem   +5 more
doaj   +1 more source

Comparison of mouse ovarian follicular development and gene expression in the presence of ovarian tissue extract and sodium selenite: An experimental study

International Journal of Reproductive BioMedicine, 2023
Background: Ovarian tissue extract (OTE) and sodium selenite (SS) enhance the growth and maturation of preantral follicles in a dose-dependent manner. Objective: The present study was designed to bring more information regarding the mechanism of OTE and ...
Hamed Shoorei, Mina Jafarabadi, Shahram PourBayranvand, Mojdeh Salehnia   +3 more
doaj   +1 more source

Ovarian Matrisome Dynamics and αvβ3‐Mediated Regulation in Early Follicular Development

Advanced Science, Volume 13, Issue 29, 22 May 2026.
The matrisome undergoes dynamic remodeling during early follicular development. Integrin αvβ3 mediates matrisome signals, regulating primordial follicle activation/atresia and secondary follicle growth via Hippo/mTOR pathways, with conserved roles in human ovaries, offering therapeutic targets for ovarian disorders.
Tong Wu, Yanzhi Feng, Qingqing Zhu, Ting Jiang, Yueyue Gao, Kebing Nie, Xianan Tang, Ying Chen, Dianxing Hu, Xudan Yang, Shixuan Wang, Meng Wu, Jinjin Zhang   +12 more
wiley   +1 more source

HUMAN FOLLICLE STIMULATING HORMONE (hFSH) AND THYROXINE (T4) IN SURVIVAL MAINTENANCE AND IN VITRO GROWTH PROMOTION OF CAPRINE PREANTRAL FOLLICLES

Ciência Animal Brasileira, 2015
The aim of this study was to investigate the interaction of human FSH (10ng/ml) with T4 (20ng/mL) on survival, activation and growth of preantral follicles cultured in vitro for 28 days.
Sanely Lourenço da Costa, Eduardo Paulino da Costa, Emílio César Martins Pereira, Wagner Gonzaga Gonçalves, Talita Fernandes da Silva, Vanessa Lopes Dias Queiroz   +5 more
doaj   +1 more source

Luteinizing hormone receptor knockout mouse: What has it taught us?

Andrology, Volume 14, Issue 4, Page 1017-1028, May 2026.
Abstract Luteinizing hormone (LH), along with its agonist choriongonadotropin (hCG) in humans, is the key hormone responsible for the tropic regulation of the gonadal function. LH and hCG act through their cognate receptor, the luteinizing hormone/choriongonadotropin receptor (LHCGR; more appropriately LHR in rodents lacking CG), located in the testis ...
Ilpo T. Huhtaniemi
wiley   +1 more source