JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Characterization of diabetes-related traits in MSM and JF1 mice on high-fat diet.

We examined the effect of a high-fat diet on the diabetes-related traits of the Japanese Fancy mouse 1 (JF1), MSM, and C57BL/6J (B6J) mice. MSM and JF1 mice were derived from Mus musculus molossinus. B6J is a commonly used laboratory strain, with the vast majority of genome segments derived from Mus musculus domesticus and Mus musculus musculus, and is susceptible to high-fat diet-induced type 2 diabetes. None of the strains showed symptoms of diabetes or obesity when fed a laboratory chow diet. Under a high-fat diet, JF1 mice developed impaired glucose tolerance, hyperglycemia, hyperinsulinemia, and obesity. B6J mice fed a high-fat diet mildly developed these diabetes-related traits compared to JF1 mice fed a high-fat diet. JF1 mice fed a high-fat diet were classified as having type 2 diabetes and were susceptible to high-fat diet-induced diabetes and obesity. On the other hand, MSM mice were resistant to high-fat diet-induced diabetes. These results indicate that the JF1 strain, with its unique genetic origin, is a useful new animal model of high-fat diet-induced diabetes and obesity. Further investigations using JF1 mice will help to clarify the role of the high-fat diet on human diabetes and obesity.

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