The long term objectives are to understand the physiological and pathophysiological roles of gastrin in the regulation of gastric acid secretion, to understand the nature and significance of interactions between gastrin and other hormonal and paracrine regulatory peptides that influence parietal cell function, and to understand the regulation of synthesis and secretion of gastrin by gastrin cells. The physiological role of circulating gastrin will be studied by specific immunoneutralization of gastrin by monoclonal antibodies. The potential endocrine and paracrine roles of somatostatin as a peripheral antagonist of gastrin action and of gastrin release will be studied by specific immunoneutralization with IgG and Fab fragments of monoclonal antibodies to somatostatin. Biosynthesis and processing of gastrin will be studied by use of antibodies specific for different regions of the progastrin molecule and by measurement of gastrin mRNA. Release of gastrin by apical and basal lateral stimulants will be studied in an isolated canine gastrin cell preparation. The intracellular mediators of the gastrin response to phenylalanine will be defined. Finally, parallel and nonparallel regulation of gastrin cell proliferation, gastrin synthesis, gastrin processing, and gastrin release will be studied in rats and dogs.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Method to Extend Research in Time (MERIT) Award (R37)
Project #
4R37DK017294-19
Application #
3483186
Study Section
Special Emphasis Panel (NSS)
Project Start
1977-02-15
Project End
1995-03-31
Budget Start
1992-04-01
Budget End
1993-03-31
Support Year
19
Fiscal Year
1992
Total Cost
Indirect Cost
Name
University of California Los Angeles
Department
Type
Schools of Medicine
DUNS #
119132785
City
Los Angeles
State
CA
Country
United States
Zip Code
90095
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