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Human hormone blocker found to help prevent obesity and diabetes: study
Date:1/3/2008

BETHESDA, MD - A new study finds that a chemical found in the body is capable of promoting weight loss, improving insulin resistance and reversing diabetes in an animal model. The hormone is gastric inhibitory polypeptide (GIP) receptor blockade.

Background

GIP is a peptide hormone that is secreted in response to food. It inhibits the secretion of acids stimulates the releases insulin as part of the digestive process in response to food. It is found in a variety of tissues, including the intestine, heart, stomach, brain and in adipose (fat).

While the significance of its action is largely unknown, its potent and prolonged stimulation after a high-fat diet has led researchers to speculate it may play a key role in metabolizing fat. Research has shown that high fat feeding results in elevated circulating GIP concentrations, traits often found in patients who are obese with diabetes. GIP also effects the growth of fat cells. Other studies have shown that mice injected with the GIP receptor antagonist - (Pro3)GIP - can reverse or prevent many of the metabolic abnormalities associated with obesity.

The Study

A new study examined whether prolonged GIP receptor antagonism using daily injections of (Pro3) GIP was able to reverse well established diet-induced obesity and related metabolic abnormalities.

The new study is entitled, "GIP Receptor Antagonism Reverses Obesity, Insulin Resistance, and Associated Metabolic Disturbances Induced in Mice by Prolonged Consumption of High-Fat Diet." It was conducted by Paula L. McClean, Nigel Irwin, Roslyn S. Cassidy, Victor A. Gault and Peter R. Flatt, all of the School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, UK; and Jens J. Holst, Department of Medical Physiology, The Panum Institute, University of Copenhagen, Copenhagen, Denmark. It is entitled The findings appear in the American Journal of Physiology - Endocrinology and Metabolism
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Contact: Donna Krupa
DKrupa@The-APS.org
301-634-7209
American Physiological Society
Source:Eurekalert

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