Chlorogenic Acid Modulates Excess Liver Production of Sugar

Byron's Comments:

A novel approach to helping the liver handle blood sugar metabolism.

Study Title:

Alterations of carbohydrate and lipid intermediary metabolism during inhibition of glucose-6-phosphatase in rats.

Study Abstract:

S 4048 (1-[2-(4-Chloro-phenyl)-cyclopropylmethoxy]-3, 4-dihydroxy-5-(3-imidazo[4, 5-b]pyridin-1-yl-3-phenyl-acryloyloxy)-cyclohexanecarboxylic acid), a derivative of chlorogenic acid, specifically inhibits the glucose-6-phosphate translocating component T1 of the glucose-6-phosphatase system. Its pharmacological effect was studied on carbohydrate and lipid parameters in rats. In starved and fed rats, S 4048 caused a dose-dependent reduction of blood glucose levels with a corresponding increase in hepatic and renal glycogen and glucose-6-phosphate. The major quantitative route of carbon flux in the liver during S 4048-induced inhibition of the glucose-6-phosphatase activity seemed to be glycogenesis. Plasma free fatty acids were increased secondarily due to the S 4048-induced hypoglycemia. Hepatic triglycerides were increased possibly due to increased re-esterification of the readily available free fatty acids. Glucose-6-phosphate translocase inhibitors may be useful for experimentally studying aspects of type 1 glycogen storage disease in laboratory animals as well as for the therapeutic modulation of inappropriately high rates of hepatic glucose production in type 2 diabetes.

Study Information:

Herling AW, Burger H, Schubert G, Hemmerle H, Schaefer H, Kramer W. Alterations of carbohydrate and lipid intermediary metabolism during inhibition of glucose-6-phosphatase in rats. Eur J Pharmacol. 1999 December 386(1):75-82
Hoechst Marion Roussel Deutschland GmbH, H 821 Pharmacology, 65926, Frankfurt am Main, Germany.

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