[Effect of stress on the release of LH and FSH in female rat plasma. Critical study].
The aim of this work was to study the effects of different procedures of blood removal on blood LH and FSH concentration at different stages of the diestrous period in 4-day cyclic female rats. Cardiac puncture, abdominal cava venipuncture both under ether anaesthesia and trunk blood collection were performed on diestrus 1 morning and diestrus 2 morning and afternoon. Non operated, adrenalectomized, sham adrenalectomized cyclic females and ovariectomized females were used. No changes in blood LH and FSH concentrations were observed on either diestrus 1 or diestrus 2 in the non operated and adrenalectomized cyclic females and in ovariectomized females following blood removal by heart puncture and bleeding from the abdominal vena cava, both under ether anaesthesia, as compared to decapitated animals. By contrast, these two procedures of blood removal caused an increase in blood LH concentration in sham adrenalectomized females as compared to their decapitated counterparts. Only heart puncture evoked an augmentation of blood FSH concentration under this experimental schedule. In accordance with previous studies blood LH and FSH concentrations appeared to be greater in ovariectomized than in intact cyclic females.
D000315:Adrenalectomy; D000818:Animals; D002369:Castration; D004031:Diestrus; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D007700:Kinetics; D007986:Luteinizing Hormone / Q000097:blood*; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D013312:Stress, Physiological / Q000503:physiopathology*
D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone
Rôle joué par le stress dans la libération plasmatique de LH et de FSH chez la ratte. Etude critique.