Αναζήτηση
Αποτελέσματα 11-19 από 19
Ovarian control of pituitary sensitivity of luteinizing hormone secretion to gonadotropin-releasing hormone in women with the polycystic ovary syndrome
(2009)
This study investigated the ovarian control of LH responsiveness to GnRH in anovulatory women with the polycystic ovary syndrome (PCOS). It is suggested that the enhanced pituitary sensitivity of LH secretion to GnRH in ...
Development and application of competitive ELISA assays for rat LH and FSH
(1999)
Rat LH (rLH) and FSH (rFSH) were measured by sensitive and specific competition ELISAs. The rat LH ELISA used rLH-I-9 coated plates, an antiserum against rLH and an antibody against rabbit IgG labeled with peroxidase. Using ...
Evidence of differential control of FSH and LH responses to GnRH by ovarian steroids in the luteal phase of the cycle
(2002)
BACKGROUND: It is known that during the follicular phase of the cycle, estradiol sensitizes the pituitary to GnRH. The aim of this study was to determine the role of ovarian steroids in the control of GnRH-induced gonadotrophin ...
Changes in pituitary sensitivity to GnRH in estrogen-treated post-menopausal women: evidence that gonadotrophin surge attenuating factor plays a physiological role
(2004)
BACKGROUND: The purpose of this study was to investigate changes in pituitary response to GnRH in post-menopausal women during substitution treatment with exogenous estrogen and progesterone. METHODS: Seven healthy ...
FSH modulatory effect on human granulosa cells: a gene-protein candidate for gonadotrophin surge-attenuating factor
(2011)
Previous evidence indicates a homology of gonadotrophin surge-attenuating factor (GnSAF) to the carboxyl terminal of human serum albumin (HSA) and the ability of human granulosa cells to produce mRNA transcripts corresponding ...
Ovarian feedback, mechanism of action and possible clinical implications
(2006)
The secretion of gonadotrophins from the pituitary in women is under ovarian control via negative and positive feedback mechanisms. Steroidal and non-steroidal substances mediate the ovarian effects on the hypothalamic-pituitary ...
Evidence that termination of the estradiol-induced luteinizing hormone surge in women is regulated by ovarian factors
(2006)
Background: The endogenous LH surge is the result of the estrogen-positive feedback effect. However, the factors that are responsible for the termination of LH surge are not known. Objective: The objective of the study was ...
Ovarian regulators of gonadotropin secretion
(2000)
Great progress in the ovarian mechanisms that control gonadotrophin secretion in women has recently been achieved, Estradiol (E-2) is the main component of the ovarian negative effect on basal gonadotropin secretion during ...