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https://doi.org/10.1093/ajh/2.2.45s
Copy DOIJournal: American journal of hypertension | Publication Date: Feb 1, 1989 |
Citations: 17 |
Acute cardiovascular and renal effects of 25 micrograms IV human calcitonin gene-related peptide (hCGRP) have been studied in four normotensive and untreated subjects, in the absence and the presence of indomethacin, a prostaglandin synthesis-blocking agent. Intravenous infusion of hCGRP, alone, caused a transient but significant increase in heart rate (HR), hypotension, and facial flushing. Along with these effects, a positive inotropic action of hCGRP was documented by a noninvasive poligraphy. Furthermore, a significant increase in the catecholamines (norepinephrine and epinephrine), in the cyclic nucleotide (cyclic AMP and cyclic GMP) plasma levels, and a small decrease in total calcium with no change in inorganic phosphorus serum levels, occurred. Also acute renal hCGRP induced effects were observed, as a significant increase in urinary volume and in the urinary calcium, sodium, potassium, and chloride excretion. Indomethacin did not affect all the cardiovascular, metabolic, and renal hCGRP-induced effects. These results are in agreement with the hypothesis that hCGRP acts on the heart, vessels, and kidney, directly or indirectly, by the mediation of other vasodilating agents or systems excluding the prostaglandin system.
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