Stabilization of glycogen stores and stimulation of glycogen synthesis in hepatocytes by phenacyl imidazolium compounds

R. A. Harris, K. Yamanouchi, P. J. Roach, T. T. Yen, S. J. Dominianni, T. W. Stephens

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

LY177507 is representative of a series of phenacyl imidazolium compounds that cause marked lowering of blood glucose levels in animal models of noninsulin-dependent diabetes mellitus. In studies conducted with isolated rat hepatocytes, LY177507 inhibited net glucose production from a variety of substrates, inhibited glycolysis from exogenous glucose and endogenous glycogen, inhibited glycogenolysis, and stimulated glycogenesis. These effects of LY177507 appear to be the consequence of activation of glycogen synthase and inactivation of glycogen phosphorylase. In vivo studies with normal fed rats demonstrated a decrease in blood glucose, an increase in hepatic glycogen stores, and an inactivation of glycogen phosphorylase. Phenacyl imidazolium compounds appear to lower blood glucose levels and affect hepatic carbohydrate metabolism by a mechanism unlike other known hypoglycemic compounds.

Original languageEnglish (US)
Pages (from-to)14674-14680
Number of pages7
JournalJournal of Biological Chemistry
Volume264
Issue number25
StatePublished - Jan 1 1989

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

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