Exogenous cysteamine increases basal pancreatic exocrine secretion in the rat

Hong Sik Lee, Kwang Hee Kim, Chang Duck Kim, Chi Wook Song, Ho Sang Ryu, Jin Hai Hyun

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    To determine whether exocrine pancreatic secretion is regulated by endogenous somatostatin, somatostatin deficiency was induced by cysteamine. Rats were subcutaneously administered a single dose of cysteamine (30 mg/100 g body weight) 12 hr before experiment. Anesthetized rats were prepared with cannulation into bile duct, pancreatic duct, duodenum, and jugular vein and pancreatic juice was collected. For in vitro study, isolated pancreata of rats, pretreated with cysteamine, were perfused with an intraarterial infusion of Krebs-Henseleit solution (37°C) at 1.2 mL/min, and pancreatic juice was collected in 15-min samples. In vivo experiment of the rat, the mean basal pancreatic secretions, including volume, bicarbonate, and protein output were significantly increased from 18.4±0.5 μL/30 min, 0.58±0.05 μEq/30 min, and 214.0±26.1 μg/30 min to 51.6±3.7 μL/30 min, 1.52±0.11 μEq/30 min, and 569.8±128.9 μg/30 min, respectively (p<0.05). In the isolated perfused pancreas, cysteamine also resulted in a significant increase in basal pancreatic secretion (p<0.05). Simultaneous intraarterial infusion of octreotide (10 pmol/hr) to isolated pancreata partially reversed the effect of cysteamine on basal pancreatic secretion. These findings suggest that endogenous somatostatin play an important role on the regulation of basal pancreatic exocrine secretion.

    Original languageEnglish
    Pages (from-to)52-56
    Number of pages5
    JournalJournal of Korean medical science
    Issue number1
    Publication statusPublished - 1999 Feb


    • Cysteamine
    • Pancreatic function tests
    • Rats
    • Somatostatin

    ASJC Scopus subject areas

    • Medicine(all)


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