Results 81 to 90 of about 12,619 (254)
Spermatogenesis and sertoli cell activity in mice lacking Sertoli cell receptors for follicle stimulating hormone and androgen [PDF]
Spermatogenesis in the adult male depends on the action of FSH and androgen. Ablation of either hormone has deleterious effects on Sertoli cell function and the progression of germ cells through spermatogenesis.
A. Monteiro +63 more
core +2 more sources
Pharmacogenetics of follicle‐stimulating hormone action in the male
Abstract Male factor infertility (MFI) is involved in half of the cases of couple infertility. The follicle‐stimulating hormone (FSH) therapy is considered efficient to improve semen parameters and pregnancy rate in patients with idiopathic MFI, following the lesson learned from hypogonadotropic hypogonadism.
Andrea Graziani +7 more
wiley +1 more source
Posttranslational modifications occurring during the biosynthesis of G protein-coupled receptors include glycosylation and palmitoylation at conserved cysteine residues located in the carboxyl-terminus (Ctail) of the receptor.
Brenda Melo-Nava +10 more
doaj +1 more source
Culture of bovine ovarian follicle wall sections maintained the highly estrogenic profile under basal and chemically defined conditions [PDF]
Follicle cultures reproduce in vitro the functional features observed in vivo. In a search for an ideal model, we cultured bovine antral follicle wall sections (FWS) in a serum-free defined medium (DM) known to induce 17β-estradiol (E2) production, and ...
Bocca, Anamélia Lorenzetti +7 more
core +1 more source
Abstract Couple infertility is a very ancient medical condition. One of the first descriptions of familial infertility/subfertility is contained in the first book of the Bible, Genesis, written in the 10th century BC and reporting tales from the oral tradition even occurred about 800 years earlier.
Manuela Simoni +2 more
wiley +1 more source
Growth hormone during in vitro fertilization in older women modulates the density of receptors in granulosa cells, with improved pregnancy outcomes [PDF]
OBJECTIVE To study the effect of aging and granulosa cell growth hormone receptor (GHR) expression, and the effect of growth hormone (GH) co-treatment during IVF on receptor expression. DESIGN Laboratory study.
Arfuso, Frank +4 more
core +1 more source
ABSTRACT Background Study aimed to obtain insights into physiological responses to immunocastration in pubertal boars by evaluating effects of alternative vaccination protocols and identifying a reliable immunocastration biomarker. Objectives It was hypothesized that the timing of gonadotropin‐releasing hormone (GnRH) suppression by immunocastration ...
Nina Batorek Lukač +6 more
wiley +1 more source
Mechanism of action of gonadotrophins in the bovine ovary and its participation in cystic ovarian disease [PDF]
Las gonadotrofinas son esenciales para la función ovárica del bovino actuando, a través de la interacción con sus receptores, en la regulación del crecimiento y la maduración folicular así como en la esteroidogénesis.
Amweg, Ayelen Noelia +5 more
core +2 more sources
ABSTRACT Twin births in dairy cattle are rare but present significant challenges for animal welfare, as both the health of the cow and the calves are affected. This causes economic losses, which prompts breeders to select against twin births and identify associated risk factors.
Laura Hüneke +4 more
wiley +1 more source
Distal regulatory elements are required for Fshr expression, in vivo [PDF]
The gonadotropin follicle-stimulating hormone (FSH) is required for initiation and maintenance of normal gametogenesis and acts through a specific, cell-surface receptor (Fshr) present only on Sertoli and granulosa cells in the gonads. Despite extensive examination of the transcriptional mechanisms regulating Fshr, the sequences directing its ...
Brian P, Hermann +3 more
openaire +2 more sources

