All of these hormones use cAMP as second messenger except
Correct Answer: Vasopressin
Description: Refer Katzung 11/e p301 Vasooressor acts by V1 and V2 receptors V1 receptors use IP3-DAG-Ca2+ pathway Whereas V2 use CAMP as second messenger. All other drugs mentioned in the question act by cAMP pathway only. Thus all these use cAMP as second messenger, but if we need to choose option we can answer vasooressor as it acting through IP3-DAG -Ca2+ pathway
Category:
Pharmacology
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