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The British Journal of Diabetes & Vascular Disease
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Impaired glucose tolerance and metformin: clinical and mechanistic aspects

Leif Sparre Hermann

Diabetes Unit, Medical Department, Uddevalla Hospital, Uddevalla, Sweden

Nicolas Wiernsperger

International Pharmacological Support, Merck Lipha, 37, rue Saint Romain, 69379 Lyon, France, nicolas.wiernsperger{at}lipha.fr

The Diabetes Prevention Program (DPP) showed that metformin reduced the incidence of diabetes in subjects with impaired glucose tolerance (IGT) who were at high risk of progression to type 2 diabetes. Metformin was not as efficient as intensive life style intervention, but had a clinically significant effect in obese individuals and in those with impaired fasting glucose (IFG). This review discusses the clinical implications and the mechanistic aspects of the effect of metformin in IGT and IFG. Acute actions of metformin on postprandial metabolism to improve hepatic glucose handling and improve the lipid profile could contribute to the lower incidence of diabetes. Longer term improvements in haemodynamic parameters and reduced oxidative stress are also implicated. Metformin offers a potential alternative or complement to lifestyle intervention for IGT, and deserves further evaluation in this respect.

Key Words: metformin • impaired glucose tolerance • postprandial • fat metabolism • oxidative stress.

The British Journal of Diabetes & Vascular Disease, Vol. 2, No. 3, 177-183 (2002)
DOI: 10.1177/14746514020020030501
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J. S Torgerson
Review: Preventing diabetes in the obese: the XENDOS study and its context
The British Journal of Diabetes & Vascular Disease, January 1, 2004; 4(1): 22 - 27.
[Abstract] [PDF]