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  • Title: Calcitonin stimulates adenylate cyclase activity, the accumulation of cyclic adenosine 3',5' monophosphate and the release of prostaglandin E2 in rat intestinal mucosa.
    Author: Nakhla AM.
    Journal: Life Sci; 1988; 42(21):2155-9. PubMed ID: 2838707.
    Abstract:
    Calcitonin stimulates intestinal fluid and electrolyte secretion by an unclear mechanism. The present results show that synthetic salmon calcitonin significantly stimulates adenylate cyclase activity in the membranes of rat intestinal mucosal cells. The effect of the hormone was in a dose-dependent manner for a dose range of 10(-9)-10(-7) M. The stimulated enzyme activity was followed by a progressive accumulation of cyclic adenosine 3',5' monophosphate and release of prostaglandin E2 in these cells during a 20 min experimental period of time. These results are discussed, and suggest that the formation of cyclic adenosine 3',5' monophosphate possibly mediates the action of calcitonin on intestinal cell functions.
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