The study demonstrates the existence of a pituitary renin-angiotensin system localized in gonadotrophs that is under androgenic control.
Answers are grounded in this paper and cite their sources.
Indicates testosterone-dependent pituitary renin in rodents; leaves open relevance to human gonadotroph function or cardiovascular outcomes.
In the rat pituitary gland, immunoreactive angiotensin II (ANG II), renin, and LH, but not PRL, were found within the same cells of the anterior pituitary gland by staining with the avidin-biotin complex method in adjacent sections. No renin-positive staining was observed in the pituitary of the rats after 10 days of castration, but positive staining reappeared after 8 weeks. This effect of castration on renin immunoreactivity was abolished by the simultaneous administration of testosterone. In contrast, ANG II immunoreactivity was unaffected by castration. The intensity of renin immunoreactivity in the pituitary was less prominent in the female than in the male rat. These results suggest that there exists a pituitary renin-angiotensin system localized in the gonadotrophs and that the pituitary renin is under androgenic control.
No takes yet. Share an insight, caveat, or question.
Naruse et al. (1986) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: