[Effect of progesterone on theophylline and prolactin stimulated Ca2+ exit from intracellular stores of pig oocytes].
Effect of progesterone on theophylline and prolactin stimulated Ca2+ exit from intracellular stores of pig oocytes was investigated using a fluorescent dye chlortetracycline. It is shown that in progesterone treated oocytes prolactin in concentration 50 ng/ml inhibits Ca2+ exit from intracellular stores of pig oocytes. Theophylline exerts the effect on prolactin Ca2+ exit from intracellular stores of pig oocytes. Employment of protein kinase C inhibitor cancelled inhibitory effect of prolactin and theophylline on Ca2+ exit from intracellular stores of pig oocytes. Ca2+ exit from intracellular stores of pig oocytes caused a joint influence of prolactin and GDP, and that of theophylline and GTP. The influence of protein kinase C inhibitor cancelled the stimulating effect of prolactin and GDP on Ca2+ exit from intracellular stores of pig oocytes also did not render any influence on the action of theophylline and GTP. These data suggest the influence of progesterone on theophylline and prolactin stimulated Ca2+ exit from intracellular stores of pig oocytes.
Denisenko
V Iu
VIu
All-Russian Research Institute of Farm Animal Genetics and Breeding RAAS, Pushkin, St. Petersburg 199600.
Kuz'mina
T I
TI
D000818:Animals; D001692:Biological Transport / Q000187:drug effects; D002118:Calcium / Q000378:metabolism*; D002751:Chlortetracycline; D004305:Dose-Response Relationship, Drug; D005260:Female; D005456:Fluorescent Dyes; D006153:Guanosine Diphosphate / Q000494:pharmacology; D006160:Guanosine Triphosphate / Q000494:pharmacology; D009865:Oocytes / Q000187:drug effects* / Q000378:metabolism; D011374:Progesterone / Q000494:pharmacology*; D011388:Prolactin / Q000037:antagonists & inhibitors; D013552:Swine; D013806:Theophylline / Q000037:antagonists & inhibitors
D005456:Fluorescent Dyes; D006153:Guanosine Diphosphate; D011374:Progesterone; D006160:Guanosine Triphosphate; D011388:Prolactin; D013806:Theophylline; D002118:Calcium; D002751:Chlortetracycline