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A small chemical change reverses prediabetes in obese mice

July 5, 2019

A small chemical change -; shifting the position of two hydrogen atoms -; makes the difference between mice that are healthy and mice with insulin resistance and fatty liver, major risk factors for diabetes and heart disease. Making the change prevented the onset of these symptoms in mice fed a high-fat diet and reversed prediabetes in obese mice.

The scientists changed the trajectory of metabolic disease by deactivating an enzyme called dihydroceramide desaturase 1 (DES1). Doing so stopped the enzyme from removing the final hydrogens from a fatty lipid called ceramide, having an effect of lowering the total amount of ceramides in the body.

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