Abstract
The effect of intragastric dextrose on albumin-stimulated cholecystokinin (CCK) release was studied in five healthy subjects and was related to gastric emptying and pancreatobiliary secretions. When combined with low concentrations of dextrose (4 g/100 ml), a 500-ml solution of albumin (7 g/100 ml) was rapidly emptied from the stomach into the duodenum (T1/2: 35 min). This rapid gastric emptying resulted in an only transient stimulation of pancreatobiliary secretion and an integrated CCK release of 278±45 pM × 180 min. When the concentration of dextrose in the albumin solution was increased from 4 g/100 ml to 21 g/100 ml, gastric emptying rate was distinctly slower (T1/2: 78 min;P<0.01) and pancreatobiliary secretions became sustained (P<0.01). CCK release was markedly higher (900±421 pM × 180 min;P<0.05) after ingestion of the solution containing a high dextrose concentration. Intraduodenal infusion of 21 g/100 ml dextrose (3.1 ml/min) failed to significantly stimulate plasma CCK levels (119±38 pM × 120 min). We suggest that the higher CCK release in response to intragastrically administered albumin solution containing high concentrations of dextrose may have been induced by augmented peptic digestion of albumin due to delayed gastric emptying and by increased enteral digestion of albumin due to increased pancreatobilary outputs.
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Jansen, J.B.M.J., Fried, M., Hopman, W.P.M. et al. Relation between gastric emptying of albumin-dextrose meals and cholecystokinin release in man. Digest Dis Sci 39, 571–576 (1994). https://doi.org/10.1007/BF02088345
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DOI: https://doi.org/10.1007/BF02088345