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  • Title: Oxyntomodulin: a potential hormone from the distal gut. Pharmacokinetics and effects on gastric acid and insulin secretion in man.
    Author: Schjoldager BT, Baldissera FG, Mortensen PE, Holst JJ, Christiansen J.
    Journal: Eur J Clin Invest; 1988 Oct; 18(5):499-503. PubMed ID: 3147901.
    Abstract:
    Synthetic oxyntomodulin, a predicted product of the glucagon gene, which is produced in the human lower intestinal mucosa, was infused in doses of 100 and 400 ng kg-1 h-1 into six volunteers to study its pharmacokinetics and effects on pentagastrin-stimulated gastric acid secretion (100 ng kg-1 h-1). The concentration of oxyntomodulin in plasma measured with a cross-reacting glucagon assay increased from 37 +/- 5 to 106 +/- 17 and 301 +/- 40 pmol l-1, respectively. The metabolic clearance rate was 5.2 +/- 0.7 ml kg-1 min-1 and the half-life in plasma was 12 +/- 1 min. Oxyntomodulin reduced the pentagastrin-stimulated acid secretion by 20 +/- 9% during the low-rate infusion (P less than 0.05) and by 76 +/- 10% during the high-rate infusion (P less than 0.05). In accordance with the homology with glucagon, there was a small, significant rise in plasma concentrations of insulin and insulin C-peptide during oxyntomodulin infusion. Oxyntomodulin may therefore be included among the potential incretins and enterogastrones in man.
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