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Biology of Reproduction, Vol 40, 1311-1319, Copyright © 1989 by Society for the Study of Reproduction

ARTICLES

Effect of steroid hormones on sulfated oviductal glycoprotein secretion by oviductal explants in vitro

MF Erickson-Lawrence, TT Turner, TS Thomas and G Oliphant
Department of Anatomy, University of Virginia Charlottesville 22908.

Explants of rabbit ampullary and isthmic tissue were cultured 4 days with and without exogenous steroids, and the sulfated oviductal glycoprotein (SOG) concentration in the explant culture supernatants was determined. Tissues cultured with progesterone plus estrogen secreted significantly more SOG than control tissues, whereas tissues cultured with estrogen alone did not. Ampullary tissues cultured with progesterone plus estrogen secreted significantly more SOG than control tissues on Days 2 and 3, whereas SOG secretion by isthmic tissues was significantly above control secretion on Day 4. Ampullary and isthmic tissues differed significantly in their secretory capacity. Maximum ampullary SOG secretion was approximately 650 ng SOG/mg tissue/day. Maximum isthmic SOG secretion was approximately 30 ng SOG/mg tissue/day. These findings suggest that the oviduct is composed of discrete functional regions that provide support to gametes and developing embryos through the unique secretory characteristics of each region.


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K. Kikuchi, A. Onishi, N. Kashiwazaki, M. Iwamoto, J. Noguchi, H. Kaneko, T. Akita, and T. Nagai
Successful Piglet Production after Transfer of Blastocysts Produced by a Modified In Vitro System
Biol Reprod, April 1, 2002; 66(4): 1033 - 1041.
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