Jul 1, 1994

Effects of cholecystokinin receptor antagonist loxiglumide on rat exocrine pancreas

S NakanoM Otsuki


Effects of long-term administration of the cholecystokinin receptor antagonist loxiglumide on exocrine pancreas were studied in adult rats. Plasma concentrations of loxiglumide at 8 h after a single subcutaneous injection of 50 mg/kg body weight of loxiglumide were 3.2 +/- 0.8 microgram/ml, which were comparable to those at 12 h after oral administration of the same dose (3.7 +/- 0.9 microgram/ml). Eight hours' prior subcutaneous injection of loxiglumide (50 mg/kg body weight) significantly suppressed pancreatic exocrine secretion stimulated by an intravenous bolus injection of 50 ng/kg body weight caerulein compared with the control rats. Based on these results, in the first experiment, loxiglumide at a dose of 50 mg/kg body weight was given subcutaneously three times a day (low dose) for 6 days to adult rats fed a standard laboratory diet. Low dose of loxiglumide significantly decreased pancreatic wet weight (-14%) and pancreatic contents of protein (-26%), trypsin (-38%), and lipase (-68%), while having no significant effect on pancreatic contents of DNA and amylase. In the second experiment, three times higher dose of loxiglumide (150 mg/kg body weight) was given by an orogastric tube twice daily for 6 days. High dose of lo...Continue Reading

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Mentioned in this Paper

CR 1505
Pancreatic Exocrine Secretion
Subcutaneous Injections
Antagonist Muscle Action
Weighing Patient
Intravenous Bolus
Triacylglycerol Lipase Measurement
Amylase Measurement

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