Abstract
We studied the effect of CCK-8 on BP and blood content of CGRP in rats with hypertension caused by fructose or inhibition of NO synthase with L-NAME. The decrease in the CGRP content was found during the development of fructose-induced hypertension, but not L-NAME-caused hypertension. Administration of CCK-8 to fructose-fed animals reduced BP and increased the content of CGRP. In rats with hypertension caused by NO deficit, CCK-8 lowered BP, but did not affect the content of CGRP. These findings suggest that CGRP mediates the hypotensive effect of CCK-8 in fructose-induced hypertension, but not in NO-deficient hypertension.
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