Rapid effects of angiotensin-II on polyphosphoinositide metabolism in the rat adrenal glomerulosa.
Angiotensin-II (A-II) provoked a rapid decrease in 32p in triphosphoinositide (TPI) in 32p-prelabeled rat adrenal glomerulosa cells. This effect (presumably reflecting TPI hydrolysis) of A-II was nearly maximal at 5 sec of incubation and appeared to precede increases in labeling of phosphatidic acid and phosphatidylinositol. Other aldosterone-stimulating agents (ACTH, K+ and serotonin) did not provoke this effect. Since this effect appeared to be independent of Ca++, it is possible that TPI hydrolysis may be important for Ca++ mobilization during A-II action in glomerulosa tissue.
D000311:Adrenal Glands / Q000187:drug effects / Q000378:metabolism*; D000804:Angiotensin II / Q000494:pharmacology*; D000818:Animals; D000001:Calcimycin / Q000494:pharmacology; D004533:Egtazic Acid / Q000494:pharmacology; D007700:Kinetics; D008297:Male; D018129:Phosphatidylinositol Phosphates; D010716:Phosphatidylinositols / Q000378:metabolism*; D010761:Phosphorus Radioisotopes; D051381:Rats
D018129:Phosphatidylinositol Phosphates; D010716:Phosphatidylinositols; D010761:Phosphorus Radioisotopes; D000804:Angiotensin II; D000001:Calcimycin; D004533:Egtazic Acid