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Obstetrics & Gynecology 1972;39:225-236
© 1972 by The American College of Obstetricians and Gynecologists
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Effects of Catecholamines on Ovarian Contractility in the Rabbit

PRAMUAN VIRUTAMASEN, MD, KAREN H. WRIGHT, BS and EDWARD E. WALLACH, MD, FACOG

Division of Reproductive Biology, Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia, Pa 19104.

Abstract

Ovarian contractility was investigated in vivo and in vitro and correlated with time of ovulation in HCG-treated rabbits. Effects of catecholamines on ovarian contractility were also considered. Contractions were recorded at intervals from 5 to 17 hours after HCG administration. Ovaries were observed for spontaneous contractility and for response to norpinephrine, phenoxybenzamine, isoproterenol and propranolol. Autonomic drugs were administered into the abdominal aorta in the in vivo preparations and/or added to the bath for in vitro study. Contractions were present in almost all ovaries examined in vivo. Amplitude and frequency of ovarian contractions increased as the time of anticipated ovulation was approached. Norepinephrine was effective in instituting contractions in those ovaries which did not contract spontaneously. In all instances, phenoxybenzamine blocked contractions. Propranolol in general intensified the contractile pattern. The relationship of these findings to the ovulatory process is discussed.




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N Glorioso, S. Atlas, J. Laragh, R Jewelewicz, and J. Sealey
Prorenin in high concentrations in human ovarian follicular fluid
Science, September 26, 1986; 233(4771): 1422 - 1424.
[Abstract] [PDF]


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