Progesterone secretion is crucial for maintaining pregnancy to parturition in mammalian species, and in cattle the corpus luteum is the primary source of this hormone. This study determined the roles of prolactin (PRL), growth hormone (GH) and luteinizing hormone (LH) in the luteotropic process in beef heifers hypophyseal stalk-transected (HST, n=7) or sham operated (sham operated controls, SOC...

It has been shown (Selye, 195 lb) that in unilaterally nephrectomized rats drinking 1 per cent. NaCi, electrophoretically homogeneous preparations of growth hormone (STH) caused nephrosclerosis, polyuria, myocarditis, and hypertension. This syndrome very closely resembles that produced by desoxycorticosterone acetate (DCA). However, one striking difference between the effects of STH and DCA is ...

UNLABELLED Transsphenoidal surgery is the most commonly used surgical procedure to handle the hypophyseal region, sometimes associated with oronasal complications. MATERIAL AND METHODS/AIM To evaluate prospectively (specific questionnaire, clinical evaluation) undiagnosed chronic oronasal complications in patients submitted to conventional transsphenoidal adenomectomy surgery, operated at dif...

Growth hormone preparations were obtained by methods previously described (1, 3) from the anterior lobes of ox pituitary glands. The biological activity of these preparations was estimated by the tibia test (5) in hypophysectomized rats. Electrophoretic experiments were carried out in a cold room at 3”. The technique of zone electrophoresis is a modification of the method of Kunkel and Slater (...

This article discusses the effects of sex steroids and anterior pituitary hormones on the immune system. Data from clinical and experimental studies on the effects of CRH, FSH, LH, and prolactin are reviewed. This is followed by a summary of results from our studies on the effects of FSH, LH, and prolactin on PBMC, CD4+ cells, and CD8+ cells in vitro.

OBJECT Indications for intraoperative angiography during aneurysm surgery remain unclear. To define its use, the authors report the results of a prospective study in which this modality was used in all patients undergoing surgery for intracranial aneurysms. METHODS Intraoperative angiography was performed prospectively in the surgical treatment of 517 consecutive aneurysms regardless of the l...