Results 1 to 10 of about 2,924 (182)

EFFECT OF THE ADMINISTRATION OF SERUM AND RECOMBINANT EQUINE CHORIONIC GONADOTROPIN ON OVARIAN DYNAMICS AND CONCEPTION RATE IN ANESTRUS PRIMIPAROUS BRANGUS COWS [PDF]

SPERMOVA, 2021
The objective was to determine the size of the dominant ovulatory follicle, the ovulation time and the conception rate of cows in anestrus treated with serum equine chorionic gonadotropin (eCG), recombinant chorionic gonadotropin and untreated controls ...
Daniel Scandolo, Alejandra Cuatrín, Virginia Mazzuca, Mariano Finello, Martín Maciel   +4 more
doaj   +1 more source

Highly sensitive in vitro bioassay for luteinizing hormone and chorionic gonadotropin allowing their measurement in plasma

Reproduction and Fertility, 2021
In previous studies, we had shown the synergistic effect of 10−5 M forskolin (FSK) on the detection threshold of the cyclic AMP response to luteinizing hormones (LH) and chorionic gonadotropins (CG) from various species in the mouse Leydig tumor cell ...
Danièle Klett, Yves Combarnous
doaj   +1 more source

Natural and recombinant equine chorionic gonadotropins past and future in animal reproductive technology

Veterinary Integrative Sciences, 2022
Equine Chorionic Gonadotropin (eCG) previously named Pregnant Mare Serum Gonadotropin (PMSG) has been widely used since the 40s in animal reproduction control. It is extracted from the blood of pregnant mares between days 40 and 120 of gestation.
Tien Thach Duong, Khac Cuong Bui, Van Tong Hoang, Van Chi Vo, Kim Khue Ngo, Thi Phuong Hien Nguyen, Van Hai Nong, Yves Combarnous, Thi Mong Diep Nguyen   +8 more
doaj   +1 more source

Treating Mares with the Long-Acting Kisspeptin Analog C6 Increases Circulating Gonadotropins but Does Not Trigger Ovulation

Agriculture, 2022
The role of the neuropeptide kisspeptin (Kp) in mammalian reproduction is well established. Nevertheless, species-specific differences exist. In the horse, administration of the shortest endogenous Kp isoform, Kp10, is unable to trigger ovulation even ...
Flavie Derouin-Tochon, Didier Lomet, Vincent Robert, Fabrice Reigner, Philippe Barrière, Thierry Blard, Amandine Gesbert, Vishwanatha Thimmalapura Marulappa, Elise Hommet, Caroline Decourt, Vincent Hellier, Vincent Aucagne, Anne Duittoz, Massimiliano Beltramo   +13 more
doaj   +1 more source

Evaluation of pig oocyte in vitro maturation and fertilization using three gonadotropin-based hormonal compounds

Asian Pacific Journal of Reproduction, 2021
Objective: To evaluate the effect of human chorionic gonadotropins (hCG) and equine chorionic gonadotropins (eCG) on in vitro gilt oocyte maturation and embryonic development, using frozen semen for fertilization.
Rosario Santiago-Rodriguez, Alma L Alvarez-Guerrero, Fernando Garcia-Gonzalez, Alicia Alcantar-Rodriguez, Alfredo Medrano   +4 more
doaj   +1 more source

The dynamics of connexin expression, degradation and localisation are regulated by gonadotropins during the early stages of in vitro maturation of swine oocytes. [PDF]

PLoS ONE, 2013
Gap junctional communication (GJC) plays a primordial role in oocyte maturation and meiotic resumption in mammals by directing the transfer of numerous molecules between cumulus cells and the oocyte.
Nicolas Santiquet, Claude Robert, François J Richard   +2 more
doaj   +1 more source

High Dosages of Equine Chorionic Gonadotropin Exert Adverse Effects on the Developmental Competence of IVF-Derived Mouse Embryos and Cause Oxidative Stress-Induced Aneuploidy

Frontiers in Cell and Developmental Biology, 2021
Gonadotropins play vital roles in the regulation of female reproductive ability and fertility. Our study aimed to determine the effects of superovulation induced by increasing doses of equine chorionic gonadotropin [eCG; also referred to as pregnant mare
En Lin, Zhiling Li, Yue Huang, Gaizhen Ru, Pei He   +4 more
doaj   +1 more source

Effect of antiprogesterone RU486 on VEGF expression and blood vessel remodeling on ovarian follicles before ovulation. [PDF]

PLoS ONE, 2014
BACKGROUND: The success of ovarian follicle growth and ovulation is strictly related to the development of an adequate blood vessel network required to sustain the proliferative and endocrine functions of the follicular cells.
Annunziata Mauro, Alessandra Martelli, Paolo Berardinelli, Valentina Russo, Nicola Bernabò, Oriana Di Giacinto, Mauro Mattioli, Barbara Barboni   +7 more
doaj   +1 more source

Effect of the transient pharmacological inhibition of Mapk3/1 pathway on ovulation in mice. [PDF]

PLoS ONE, 2015
Mitogen-activated protein kinase 3/1 (Mapk3/1) pathway is critical for LH signal transduction during ovulation. However, the mechanisms remain incompletely understood.
Dayananda Siddappa, Élaine Beaulieu, Nicolas Gévry, Philippe P Roux, Vilceu Bordignon, Raj Duggavathi   +5 more
doaj   +1 more source

Influence of equine growth hormone, insulin-like growth factor-I and its interaction with gonadotropins on in vitro maturation and cytoskeleton morphology in equine oocytes

Animal, 2013
In horses, successful in vitro fertilization procedures are limited by our inability to consistently mature equine oocytes by in vitro methods. Growth hormone (GH) is an important regulator of female reproduction in mammals, playing an important role in ...
G.R. Pereira, P.L. Lorenzo, G.F. Carneiro, B.A. Ball, L.M.C. Pegoraro, C.A. Pimentel, I.K.M. Liu   +6 more
doaj   +1 more source