Involvement of cAMP-Dependent protein kinase and intracellular free calcium ions in regulation of ovulation of the follicle-enclosed oocytes ofRana temporaria by gonadotropic hormones

Involvement of cAMP-Dependent protein kinase and intracellular free calcium ions in regulation of... The inhibitor of cAMP-dependent protein kinase N-[2-(methylamino)ethyl]-5-isoquinoline-sulfonamide (H-8) (12.5–50 μM) decreased the rate of ovulation of the follicle-enclosedRana temporaria oocytes induced by the homologous pituitary extract in amphibian Ringer solution and in a chloride-free medium. The inhibitor of voltage-dependent calcium channels diltiazem (10 and 100 μM) decreased the rate of ovulation in Ringer solution but did not affect it in a chloride-free medium or decreased the ovulation inhibitory effect of this medium. It was concluded that cAMP-dependent protein kinase and intracellular free calcium ions were involved as second messengers in the gonadotropin regulation not only in maturation of amphibian oocytes but also in ovulation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Involvement of cAMP-Dependent protein kinase and intracellular free calcium ions in regulation of ovulation of the follicle-enclosed oocytes ofRana temporaria by gonadotropic hormones

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Publisher
Springer Journals
Copyright
Copyright © 2000 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1007/BF02758913
Publisher site
See Article on Publisher Site

Abstract

The inhibitor of cAMP-dependent protein kinase N-[2-(methylamino)ethyl]-5-isoquinoline-sulfonamide (H-8) (12.5–50 μM) decreased the rate of ovulation of the follicle-enclosedRana temporaria oocytes induced by the homologous pituitary extract in amphibian Ringer solution and in a chloride-free medium. The inhibitor of voltage-dependent calcium channels diltiazem (10 and 100 μM) decreased the rate of ovulation in Ringer solution but did not affect it in a chloride-free medium or decreased the ovulation inhibitory effect of this medium. It was concluded that cAMP-dependent protein kinase and intracellular free calcium ions were involved as second messengers in the gonadotropin regulation not only in maturation of amphibian oocytes but also in ovulation.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Nov 18, 2007

References

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