[Determination of serum calicotonin gene-related peptide in patients with duodenal ulcer infected with Helicobacter pylori].

To investigate the effect of calicotonin gene-related peptide(CGRP) on duodenal ulcer caused by Helicobacter pylori infection.The serum levels of CGRP were determined by radioimmunoassay in 30 patients with duodenal ulcer associated with Helicobacter pylori infection and 20 healthy volunteers.The mean CGRP serum level was higher in duodenal ulcer associated with Helicobacter pylori group than that in the healthy group.The CGRP level might be one of the important factors in which Helicobacter pylori infections induce duodenal ulcer.