PMID: 6982185Jan 1, 1982Paper

Evidence for follicle wall involvement in ovulation and progesterone production by frog (Rana pipiens) follicles in vitro

Differentiation; Research in Biological Diversity
A W Schuetz, C A Lessman

Abstract

Involvement of different cellular investments of the amphibian ovarian follicle wall in the ovulatory process, progesterone production, and oocyte maturation was investigated. Following microdissection, to selectively remove one or more layers (surface epithelium, theca, follicle cells) of the follicle wall, dissected and undissected ovarian follicles were treated with frog pituitary homogenate (FPH) or progesterone. Intact follicles ovulated in response to pituitary homogenate and this was associated with contractions of the follicle wall. Ovulation and follicular contractions were not observed following removal of the surface epithelium without removing the thecal layer. Oocyte maturation occurred in response to FPH following removal of the surface epithelium alone or together with the theca, but not in the absence of the follicle cells. Intact follicles were most responsive to FPH with respect to progesterone production, and removal of all somatic cells from oocytes obliterated FPH stimulated progesterone production. Oocytes, regardless of wether any or all follicular wall layers were removed, matured but did not ovulate following exposure to progesterone. The results suggest that the surface epithelium, but not the theca, i...Continue Reading

References

Apr 1, 1967·Proceedings of the Society for Experimental Biology and Medicine·A W Schuetz
Mar 1, 1974·Biology of Reproduction·P Rondell
Mar 1, 1974·Biology of Reproduction·A W Schuetz
Mar 1, 1974·Biology of Reproduction·L L Espey
Jan 1, 1970·Acta Endocrinologica. Supplementum·D Rodbard, J E Lewald
Dec 1, 1967·The Journal of Experimental Zoology·A W Schuetz
Oct 1, 1968·The Journal of Cell Biology·R G Kessel, W R Panje
Feb 1, 1980·Biology of Reproduction·L L Espey
Dec 1, 1945·The Journal of Experimental Zoology·P A WRIGHT

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Citations

Sep 11, 2001·Molecular Reproduction and Development·C A Lessman, H Kim
Aug 6, 2002·General and Comparative Endocrinology·Noemí Custodia-Lora, Ian P Callard
Jan 24, 1998·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·T Wang, C A Lessman
Mar 25, 2011·Gynécologie, obstétrique & fertilité·G ChêneJ Dauplat
Aug 12, 2008·Journal of Insect Physiology·Anne M Cieniewicz, Richard I Woodruff
Oct 1, 1987·The Journal of Experimental Zoology·S Kleis-San Francisco, A W Schuetz
Aug 1, 1984·The Journal of Experimental Zoology·C A Lessman, W S Marshall
Sep 29, 2019·International Journal of Molecular Sciences·Alexander A TokmakovKen-Ichi Sato
Dec 29, 2020·Frontiers in Cell and Developmental Biology·Alexander A TokmakovKen-Ichi Sato
Aug 7, 2007·Tissue & Cell·J E Curran, R I Woodruff

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