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Effect of an OT antagonist on the control of the midcycle LH surge in women

Vanakara, P.; Dafopoulos, K.; Papastergiopoulou, L.; Kallitsaris, A.; Papageorgiou, I.; Messinis, I. E. (2009)

P>Objective Data in women regarding the role of OT in LH secretion during the LH surge are conflicting. As in previous studies blood samples for LH measurements were taken infrequently, we re-examined this matter in women ...

Oxytocin is not important for the control of gonadotrophin secretion in the late follicular phase of the cycle

Vanakara, P.; Dafopoulos, K.; Papastergiopoulou, L.; Kallitsaris, A.; Papageorgiou, I.; Messinis, I. E. (2007)

Objective To study the role of oxytocin in basal and GnRH-induced gonadotrophin secretion in normal women. Design Normal women were studied in three cycles. When the diameter of the leading follicle was 15-16 mm, the women ...

Oxytocin effect on the control of the midcycle LH surge in women

Vanakara, P.; Dafopoulos, K.; Kallitsaris, A.; Papageorgiou, I.; Messinis, I. E. (2006)

Failure of the GnRH antagonist ganirelix to block the positive feedback effect of exogenous estrogen in normal women

Messinis, I. E.; Vanakara, P.; Zavos, A.; Verikouki, C.; Georgoulias, P.; Dafopoulos, K. (2010)

This study investigated whether the GnRH antagonist ganirelix is able to block the positive-feedback effect of E-2 in normal women. Ganirelix was unable to block the positive-feedback effect, suggesting that the clinical ...

Evidence that termination of the estradiol-induced luteinizing hormone surge in women is regulated by ovarian factors

Dafopoulos, K.; Mademtzis, I.; Vanakara, P.; Kallitsaris, A.; Stamatiou, G.; Kotsovassilis, C.; Messinis, I. E. (2006)

Background: The endogenous LH surge is the result of the estrogen-positive feedback effect. However, the factors that are responsible for the termination of LH surge are not known. Objective: The objective of the study was ...

Retinoid receptor alpha and beta expression in serous ovarian tumors

Daponte, A.; Kostopoulou, E.; Chiotoglou, I.; Vanakara, P.; Minas, M.; Nakou, M.; Kallitsaris, A.; Kollia, P.; Koukoulis, G.; Messinis, I. E. (2007)

The expression of retinoid acid receptors alpha (RAR alpha) and beta (RAR beta) and estrogen receptor alpha (ER alpha) was assessed by immunohistochemistry and Western blotting in normal ovaries, serous cystadenoma (n = ...