Results 11 to 20 of about 1,054 (154)

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

open access: yesPLoS 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   +5 more
doaj   +1 more source

Influência das gonadotrofinas na regulação da maturação nuclear de oócitos eqüinos Influence of gonadotropins on nuclear maturation of equine oocytes

open access: yesCiência Rural, 1998
A maturação in vitro, fecundação e as técnicas de cultivo de embriões na espécie eqüina são extremamente importantes e necessárias para se examinar as causas de repetição de cio, redução de concepção em éguas velhas e também para a preservação da espécie
Juan Manuel Larre Borges   +4 more
doaj   +1 more source

Interleukin-1 (IL-1) system gene expression in granulosa cells: kinetics during terminal preovulatory follicle maturation in the mare

open access: yesReproductive Biology and Endocrinology, 2003
Background A growing body of evidences suggests that the ovary is a site of inflammatory reactions, and thus, ovarian cells could represent sources and targets of the interleukin-1 (IL-1) system.
Gérard Nadine, Martoriati Alain
doaj   +1 more source

Regulation of P450 oxidoreductase by gonadotropins in rat ovary and its effect on estrogen production

open access: yesReproductive Biology and Endocrinology, 2008
Background P450 oxidoreductase (POR) catalyzes electron transfer to microsomal P450 enzymes. Its deficiency causes Antley-Bixler syndrome (ABS), and about half the patients with ABS have ambiguous genitalia and/or impaired steroidogenesis.
Uesaka Miki   +7 more
doaj   +1 more source

Evaluation of estradiol benzoate as a pre-treatment for oocyte recovery in sheep

open access: yesSemina: Ciências Agrárias, 2014
The objective of this study was to compare the number of follicles, oocytes and the recovery rate in sheep submitted to the one-shot protocol with or without ovarian priming with estradiol benzoate (EB).
Marilu Constantino Max   +6 more
doaj   +1 more source

Horse Welfare During Equine Chorionic Gonadotropin (eCG) Production [PDF]

open access: yesAnimals, 2019
Collection of blood from pregnant mares for extraction of equine chorionic gonadotropin (eCG) is a critical but relatively unknown and poorly regulated practice in the countries in which it occurs. Equine chorionic gonadotropin is a hormone that is widely used to enhance reproductive performance and management of dairy and beef cattle, sheep, goats ...
Xavier Manteca Vilanova   +3 more
openaire   +3 more sources

Fast renal trapping of porcine Luteinizing Hormone (pLH) shown by 123I-scintigraphic imaging in rats explains its short circulatory half-life

open access: yesReproductive Biology and Endocrinology, 2003
Background Sugar moieties of gonadotropins play no primary role in receptor binding but they strongly affect their circulatory half-life and consequently their in vivo biopotencies. In order to relate more precisely hepatic trapping of these glycoproteic
Locatelli Alain   +7 more
doaj   +1 more source

The relationship between the variants in the 5'-untranslated regions of equine chorionic gonadotropin genes and serum equine chorionic gonadotropin levels

open access: yesAsian-Australasian Journal of Animal Sciences, 2017
An experiment was conducted to study the association between the single nucleotide polymorphisms (SNPs) in 5'-untranslated regions (5'-UTR) of equine chorionic gonadotropin (eCG) genes and the serum eCG levels.SNPs in 5'-UTR of eCG genes were screened across 10 horse breeds, including 7 Chinese indigenous breeds and 3 imported breeds using iPLEX ...
ShuQin Liu   +7 more
openaire   +3 more sources

Oocyte–cumulus cell interaction: a key factor in early embryo development

open access: yesBiological Reviews, EarlyView.
ABSTRACT The evaluation of oocyte competence is a fundamental step in achieving successful outcomes following assisted reproduction techniques (ART). At present, however, conventional oocyte maturation assessment is carried out by morphological observation, which is a subjective method that does not consider molecular features.
Marc Torres‐Garrido   +2 more
wiley   +1 more source

Production of Mare Chorionic Girdle Organoids That Secrete Equine Chorionic Gonadotropin

open access: yesInternational Journal of Molecular Sciences, 2023
The equine chorionic girdle is comprised of specialized invasive trophoblast cells that begin formation approximately 25 days after ovulation (day 0) and invade the endometrium to become endometrial cups. These specialized trophoblast cells transition from uninucleate to differentiated binucleate trophoblast cells that secrete the glycoprotein hormone ...
Riley E. Thompson   +7 more
openaire   +2 more sources

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