Oxytocin stimulates progesterone production by bovine granulosa cells isolated before, but not after, the luteinizing hormone surge.
AK Voss, JE Fortune
Mol Cell Endocrinol | Published : 1991
Oxytocin and its mRNA have been detected in bovine granulosa cells, but the function of follicular oxytocin is not well understood. We have shown previously that oxytocin exerts a specific, dose-dependent, stimulatory effect on progesterone secretion by granulosa, but not theca cells isolated from bovine preovulatory follicles obtained 48 h after the initiation of luteolysis. The objective of the present study was to characterize the development of granulosa cell responsiveness to oxytocin during the follicular phase. Granulosa cells and theca interna were isolated form preovulatory follicles early in the follicular phase (24 h after the initiation of luteolysis) or after the luteinizing hor..View full abstract