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  • 1980-1984  (3)
  • 1982  (3)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Research in experimental medicine 180 (1982), S. 215-221 
    ISSN: 1433-8580
    Schlagwort(e): Secretin ; Cholecystokinin-Pancreozymin ; Intestinal hormones ; Intestinal absorption
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The effects of natural secretin (90%) and synthetic secretin as well as impure (10%) and pure (99%) cholecystokinin-pancreozymin (CCK) on net absorption of water, electrolytes, and glucose in human jejunum were studied in 31 normal subjects. An intestinal perfusion technique with a triple-lumen tube was used. Net absorption of water and solute was significantly inhibited by both hormones only with larger doses, pure CCK being less active than impure CCK. A dose-dependent response of water and electrolyte absorption to graded doses of pure CCK was observed, without concomitant inhibition of glucose absorption with lower doses. The findings suggest that secretin and CCK may not be of physiologic importance regarding intestinal absorption in man. The definite changes in intestinal motility and transit rate caused by these hormones seem more likely to result in a reduction of intestinal absorption and an increase in the secretion of water and electrolytes along the proximal small bowel.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1433-8580
    Schlagwort(e): H2-Receptor ; Somatostatin ; Pancreatic polypeptide ; Gastrin ; Insulin
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The effect of histamine H2-receptor stimulation via the infusion of impromidine was assessed with regard to postprandial plasma insulin, pancreatic polypeptide (PP), somatostatin, and gastrin levels. The effect of impromidine was assessed in the postprandial state during a liver extract/sucrose test meal which had a buffer capacity to maintain the intragastric pH at a constant level for the time impromidine was infused. Postprandial plasma insulin and gastrin levels were not changed by impromidine (10µg/kg·h−1). Plasma somatostatin levels rose significantly, whereas the postprandial increase of plasma PP levels was attenuated. The effects on somatostatin and PP were antagonized by the infusion of cimetidine, a specific histamine H2-receptor blocker. In conclusion the present data demonstrate that in the postprandial state activation of H2-receptors stimulates somatostatin and inhibits PP release while insulin and gastrin release are not affected.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Research in experimental medicine 180 (1982), S. 223-228 
    ISSN: 1433-8580
    Schlagwort(e): Synthetic human gastrin I ; Gastrin-like pentapeptide ; Intestinal absorption ; Zollinger-Ellison syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The effects of synthetic human gastric I (SHG I) and gastrin-like pentapeptide (PG) on jejunal water, electrolyte, and glucose absorption were studied in 11 normal subjects. The i.v. administration of graded doses of SHG I increased plasma gastrin levels similar to those after food intake and in the Zollinger-Ellison syndrome. SHG I and PG caused no significant changes in the net movement of water and solute. The findings indicate that gastrin has no direct effect on intestinal absorption in normal man, and does not account for the mechanism of diarrhea in the Zollinger-Ellison syndrome.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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