scholarly journals Complete Sertoli Cell Proliferation Induced by Follicle-Stimulating Hormone (FSH) Independently of Luteinizing Hormone Activity: Evidence from Genetic Models of Isolated FSH Action

Endocrinology ◽  
2004 ◽  
Vol 145 (4) ◽  
pp. 1587-1593 ◽  
Author(s):  
Charles M. Allan ◽  
Alvaro Garcia ◽  
Jenny Spaliviero ◽  
Fu-Ping Zhang ◽  
Mark Jimenez ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Luteinizing Hormone ◽  
Sertoli Cell ◽  
Follicle Stimulating Hormone ◽  
Genetic Models ◽  
Hormone Activity ◽  
Stimulating Hormone

OESTROGEN SYNTHESIS IN RAT OVARIES IN VITRO: EFFECTS OF ENDOGENOUS AND EXOGENOUS GONADOTROPHINS

1972 ◽  
Vol 53 (3) ◽  
pp. 397-406 ◽  
Author(s):  
BRENDA ROBINSON ◽  
R. E. OAKEY
Keyword(s):  
Luteinizing Hormone ◽  
Follicle Stimulating Hormone ◽  
Oestrous Cycle ◽  
The Other ◽  
Ovarian Vein ◽  
Hormone Activity ◽  
In Vitro Effects ◽  
Stimulating Hormone

SUMMARY The rate of synthesis of [14C]oestrone and [14C]oestradiol-17β from [14C]testosterone in vitro by ovaries from rats at different stages of the oestrous cycle was measured. The rate of [14C]oestrogen synthesis was highest in ovaries taken from rats in pro-oestrus and lowest in ovaries taken from rats early in the dioestrous phase of the cycle. Rates of synthesis in ovaries obtained from rats in the late dioestrous stage were intermediate between the rates of the other groups. The rates of [14C]oestrogen synthesis at these periods of the cycle paralleled the concentrations of oestrogens in ovarian vein plasma reported by other authors. Gonadotrophin preparations with either luteinizing hormone activity or both follicle-stimulating hormone and luteinizing hormone activities had no effect on [14C]oestrogen synthesis by rat ovaries in vitro at any of these stages of the oestrous cycle.

OVULATION IN IMMATURE RATS TREATED WITH OVINE FOLLICLE-STIMULATING HORMONE: FACILITATION BY PROGESTERONE AND INHIBITION BY CONTINUOUS LIGHT

1967 ◽  
Vol 38 (2) ◽  
pp. 187-194 ◽  
Author(s):  
R. K. MEYER ◽  
C. E. McCORMACK
Keyword(s):  
Luteinizing Hormone ◽  
Pituitary Gland ◽  
Follicle Stimulating Hormone ◽  
Subcutaneous Administration ◽  
Continuous Light ◽  
Hormone Activity ◽  
Immature Rats ◽  
Stimulating Hormone

SUMMARY Ovulation in immature rats induced by daily subcutaneous administration of sheep follicle-stimulating hormone (FSH) was prevented by appropriately timed injection of phenobarbitone or by exposure to continuous light. Progesterone produced ovulation in light-blocked rats and in rats kept in standard lighting which had received a non-ovulatory dose of FSH. These findings are interpreted to mean that ovulation produced by these preparations of FSH was due to a release of ovulating hormone from the pituitary gland. It is suggested that slight luteinizing hormone activity in an FSH preparation produces ovulation by causing the secretion of progesterone which then facilitates the release of ovulating hormone from the pituitary gland.

Sign in / Sign up

Export Citation Format

Share Document