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In addition to the acid-stimulatory gastrins, progastrin also release N-terminal fragments. In order to examine the cellular content, secretion and peripheral metabolism of these fragments, we developed an immunoassay specific for the N-terminal sequence of human progastrin.The concentration of N-terminal progastrin fragments in human antral tissue was 6.7 nmol/g tissue (n=5), which was only half...
The antral hormone gastrin is the key regulator of gastric acid secretion, mucosal growth and differentiation. Gastrin is synthesized in the endocrine G-cells in the antroduodenal mucosa. We have now examined the way in which the loss of gastrin alone or gastrin plus cholecystokinin (CCK) affects the antral G-cell. Immunohistochemistry, radioimmunoassay and quantitative real-time polymerase chain...
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