Abstract
The study of gastrin continues to serve as an excellent model for gastrointestinal regulatory processes. This review highlights some recent advances in the field by outlining gastrin biosynthesis, summarizing current understanding of gastrin receptors, describing the regulation of gastrin release, and discussing the clinical implications of gastrin in the pathogenesis of peptic ulcer disease. Emphasis is on three emerging areas of gastrin research: the novel finding that one of gastrin's posttranslational processing intermediates has biological activity distinct from that of the mature peptide; elucidation of gastrin's signal transduction mechanisms that mediate the trophic effects of the peptide; and the role of gastrin in peptic ulcer disease pathogenesis secondary to Helicobacter pylori infection.
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