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  • 1
    ISSN: 1573-2568
    Keywords: pancreastatin ; pancreatic exocrine secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The plasma concentrations of pancreastatin and cholescystokinin (CCK), exocrine pancreatic responses, and gallbladder contraction following intrajejunal ingestion of 100 kcallhr semidigested liquid meal (Clinimeal) were simultaneously studied in six controls and six patients with chronic pancreatitis. An intrajejunal infusion of Clinimeal resulted in significant rises of pancreastatin and CCK, which paralleled the pancreatic secretion and gallbladder contraction. On the other hand, an intrajejunal infusion of Clinimeal resulted in a delayed rise of pancreastatin and no rise of CCK in chronic pancreatitis. Pancreatic secretion did not increase, and gallbladder contraction was not induced in these patients. It is suggested that pancreastatin may play an important role in the regulation of intestinal phase of exocrine pancreas. The impaired pancreastatin and CCK release in chronic pancreatitis may be due to the inappropriate stimuli in the lumen, which is attributed to pancreatic exocrine dysfunction, or to disturbed physiological regulation between the pancreas and gastrointestinal tract.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-5922
    Keywords: CCK ; mRNA ; PCR ; Northern analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cholecystokinin, a brain gut peptide that stimulates gall bladder contraction and pancreatic exocrine secretion, also acts as a neurotransmitter. In this study, we demonstrated that small amounts of cholecystokinin precursor mRNA were expressed in the heart, lung, and kidney, as well as in the brain and the small intestine. The nucleotide sequences of the coding regions of the cholecystokinin precursor mRNA in these tissues were identical to those of the small intestine, indicating that cholecystokinin precursor proteins produced in these tissues are identical to those in small intestine. This is the first report demonstrating that the cholecystokinin precursor gene is expressed in the heart, lung, and kidney, as well as in the gastrointestinal tract and brain.
    Type of Medium: Electronic Resource
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