Results 71 to 80 of about 5,344 (205)

Expressions of Kisspeptin System and Ki‐67 in the Reproductive Tissues of Cyclic Bitches

Reproduction in Domestic Animals, Volume 61, Issue 4, April 2026.
ABSTRACT Kisspeptin is a peptide that plays a pivotal role in the central regulation of gonadotropins. It is regarded as a key regulator of reproductive processes, including follicular and luteal development and endometrial remodelling. The objective of this study was to investigate the expression of KISS1, its receptor KISS1R and the proliferation ...
Özgecan Korkmaz Ağaoğlu, Ali Reha Ağaoğlu, Özlem Özmen, Gökhan Bozkurt, Şerife Taşan   +4 more
wiley   +1 more source

Effect of pituitary adenylate cyclase-activating polypeptide and vasoactive intestinal polypeptide on mouse preantral follicle development in vitro.

, 2004
Pituitary adenylate cyclase-activating polypeptide (PACAP) is a bioactive peptide isolated from ovine hypothalamus. It is transiently expressed in preovulatory follicles and positively affects several parameters correlated with the ovulatory process.
Rossi G, Scaldaferri L, Cecconi S, CANIPARI, Rita, BARBERI, MARZIA   +4 more
core   +1 more source

IGF‐1 Deficiency Serves as an Integrated Biomarker Pathogenic Driver and Predictor in Poor Ovarian Response

Advanced Science, Volume 13, Issue 18, 27 March 2026.
IGF‐1 deficiency underlies poor ovarian response (POR), as reduced levels in follicular fluid and granulosa cells impair antral follicle formation and compromise reproductive outcomes. Including IGF‐1 as a biomarker significantly enhances the accuracy of models predicting both PORrisk and pregnancy success.
Zhu Hu, Yuanyuan Yu, Guanyou Huang, Jinnan Li, Chao Yang, Aizhuan Long, Jia Tang, Tengxiang Chen, Shuyun Zhao, Tuo Zhang   +9 more
wiley   +1 more source

FOLLICLE POPULATIONS IN MARE OVARIES: FROM PREANTRAL TO PREOVULATORY FOLLICLES

Enciclopédia Biosfera, 2015
The purpose of this study was to describe morphological and quantitative aspects of preantral and antral follicles in the equine ovary. Six ovaries were collected from necropsied mares and sliced lengthwise parallel to the ovulation fossa. The slices were fixed and processed for histological evaluation under light microscopy.
Rivas Leonel, Ellen, Bento-Silva, Viviane, Costa e Silva, Eliane Vianna, Zúccari, Carmem Estefânia Serra Neto   +3 more
openaire   +2 more sources

Preantral Follicle Numbers and Size in Heifers Carrying the Bovine High Fecundity Allele Trio [PDF]

, 2020
The bovine high fecundity allele, Trio, results in overexpression of SMAD6 and a 3-fold increase in ovulation rate compared to wild-type non-carrier cattle. In addition, Trio carriers have similar number of antral follicles as non-carrier cattle; however,
Constantino, James
core  

Comparative Single‐Cell Transcriptomic Atlas Reveals the Genetic Regulation of Reproductive Traits

Advanced Science, Volume 13, Issue 17, 23 March 2026.
A cross‐species single‐cell transcriptomic atlas of reproductive and central nervous system tissues from sheep and humans reveals conserved cellular programs and regulatory networks that regulated fertility. Integration with GWAS for sheep lifetime average litter size identifies UNC5–SLIT–BMP signaling as a core pathway coordinating neuroendocrine ...
Bingru Zhao, Hanpeng Luo, Dailu Guan, Xuefeng Fu, Feng Wang, Guoming Zhang, Shanglai Li, Hua Yang, Yanli Zhang   +8 more
wiley   +1 more source

The role of glucocorticoids in ovarian development of sleep deprived rats

Taiwanese Journal of Obstetrics & Gynecology, 2019
Objective: Sleep deprivation (SD) adversely affects female reproductive function. In this study, we investigated the role of glucocorticoids in ovarian development in sleep deprived rats.
Chueh-Ko Yang, Horng-Der Tsai, Cheng-Hsuan Wu, Chung-Lung Cho   +3 more
doaj   +1 more source

Sphingosine 1-phosphate promotes activation of aprine preantral follicle in vitro [PDF]

, 2014
Este estudo descreve o efeito da esfingosina 1-fosfato (S1P) no desenvolvimento de folículos pré-antrais, portanto da ativação e viabilidade de folículos caprinos cultivados in vitro.
Gonçalves,P.B.D., Gonçalves, P.B.D., C.C. Campello, J.R. Figueiredo, M.H.T. Matos, Lima-Verde,I.B., Figueiredo, José Ricardo de, R.N. Chaves, Chaves,R.N., D.M. Magalhães, I.B. Lima-Verde, Lima-Verde, Isabel Bezerra, Nóbrega Jr.,J.E., Rossetto,R., Matos,M.H.T., R. Rossetto, Chaves, R.N., Matos, M.H.T., Campello, Claudio Cabral, J.E. Nóbrega Jr., Campello,C.C., Oliveira, J.F.C., Figueiredo,J.R., Oliveira,J.F.C., Magalhães, D.M., Báo, Sônia Nair, Rossetto, R., Báo,S.N., Nóbrega Junior, Jandui Escarião da, S.N. Báo, P.B.D. Gonçalves, J.F.C. Oliveira, Magalhães,D.M.   +32 more
core   +1 more source

Evaluating Potential Effects of Chamomile (Matricaria chamomilla L.) in Polycystic Ovary Syndrome: A Systematic Review and Meta‐Analysis

Food Science &Nutrition, Volume 14, Issue 3, March 2026.
Chamomile contains different bioactive agents such as flavonoids and phytosterols with potential anti‐inflammatory, antioxidant, analgesic, antispasmodic, and antitumor characteristics. According to our findings, animal studies have demonstrated the potential benefits of Chamomile consumption in the treatment of PCOS. In contrast, human studies yielded
Zahra Firoozi, Roghayeh Molani‐Gol, Vahideh Ebrahimzadeh‐Attari, Aida Malek‐Mahdavi   +3 more
wiley   +1 more source

Isolation and characterization of preantral follicles from foetal bovine ovaries [PDF]

Veterinary Quarterly, 1994
A simple, mechanical method is described for the isolation of preantral follicles from bovine foetuses of 220-280 days of gestation. On average, 2918 + 621 (s.d.) preantral follicles were isolated per ovary. The isolated preantral follicles were characterized on the basis of the morphological appearance of the surrounding granulosa cells, the number of
Hulshof, S. C. J., Figueiredo, José Ricardo, Beckers, Jean-François, Bevers, M. M., Van den Hurk, R.   +4 more
openaire   +3 more sources