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  • Title: [Inhibitory effect of somatostatin analog, SMS 201-995, on exocrine secretion from isolated rat pancreatic acini].
    Author: Matsushita K, Okabayashi Y, Nakamura T, Fujii M, Tani S, Fujisawa T, Koide M, Hasegawa H, Kido Y, Okutani T.
    Journal: Nihon Shokakibyo Gakkai Zasshi; 1992 Jun; 89(6):1369-74. PubMed ID: 1380100.
    Abstract:
    In vitro effect of somatostatin analog, SMS 201-995 (SMS), on pancreatic exocrine secretion was investigated using isolated rat pancreatic acini. SMS had no effect on basal, cholecystokinin octapeptide (CCK-8)- or secretin-stimulated amylase release. SMS inhibited pancreatic amylase release in response to simultaneous stimulation with secretin and CCK-8 in a dose-dependent manner. Significant inhibition was observed with 10 nM SMS and maximal inhibition with 0.1-1 microM SMS. Amylase release in response to the combination of 100 pM CCK-8, 1 nM secretin and 0.1-1 microM SMS was similar to that to 100 pM CCK-8 alone. Secretin significantly increased acinar cell cAMP content. SMS partially inhibited an increase in cAMP content induced by secretin. The present study has demonstrated, therefore, that SMS directly inhibits the potentiating effect of secretin on exocrine secretion in part by inhibiting an increase in secretin-induced cAMP accumulation in rat pancreatic acinar cells.
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