Proglumide Stimulates Basal Pancreatic Secretion in the Conscious Rat

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Abstract
The effect of proglumide, a glutaramic acid derivative, on pancretic secretion was examined in vivo in the conscious rat with and without the return of bile-pancreatic juice (BPJ) to the intestine. Intravenous infusion of both 300 and 60 mg/kg proglumide significantly decreased protein output in a dose-related manner during BPJ diversion, but did not completely abolish the pancreatic hypersecretory response to BPJ diversion. Conversely, during basal secretion with BPJ being returned to the intestine, 300 mg/kg/h of proglumide increased the protein output. Dibutyryl cyclic GMP infused simultaneously with proglumide did not abolish the stimulatory effect of proglumide on basal secretion. It was concluded that proglumide inhibits pancreatic protein output during stimulated secretion by means of the luminal feedback mechanism but increases protein output during basal (BPJ returned) secretion in the conscious rat.

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