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Bioscience reports

Transglutaminase involvement in the secretion of insulin from electropermeabilised rat islets of Langerhans.


PMID 1707691

Abstract

Ca(2+)-Induced insulin release from electropermeabilised islets is inhibited by the transglutaminase inhibitors monodansylcadaverine, glycine methylester, methylamine and cystamine but not by the control compounds dimethyl monodansylcadaverine and sarcosine methylester which lack the primary amine group. Neither monodansylcadaverine nor glycine methylester inhibited insulin secretion induced by either cAMP or the phorbol ester PMA at basal levels (10 nM) of Ca2+. These data provide further evidence for the involvement of transglutaminase in Ca2+ induced insulin secretion, they also suggest that insulin secretion induced by either cAMP or PMA may act in part by a mechanism independent of that induced by Ca2+.

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