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How poor maternal diet can increase risk of diabetes -- new mechanism discovered
Date:1/6/2012

Researchers funded by the Biotechnology and Biological Sciences Research Council have shown one way in which poor nutrition in the womb can put a person at greater risk of developing type 2 diabetes and other age-related diseases in later life. This finding could lead to new ways of identifying people who are at a higher risk of developing these diseases and might open up targets for treatment.

The team, from the University of Cambridge and the Medical Research Council (MRC) Toxicology Unit at the University of Leicester, publish their findings today (Friday 6 January) in the journal Cell Death and Differentiation.

The research shows that, in both rats and humans, individuals who experience a poor diet in the womb are less able to store fats correctly in later life. Storing fats in the right areas of the body is important because otherwise they can accumulate in places like the liver and muscle where they are more likely to lead to disease.

Professor Anne Willis of the MRC Toxicology Unit at the University of Leicester explains "One of the ways that our bodies cope with a rich modern western diet is by storing excess calories in fat cells. When these cells aren't able to absorb the excess then fats get deposited in other places, like the liver, where they are much more dangerous and can lead to type 2 diabetes."

The team found that this process is controlled by a molecule called miR-483-3p. They found that miR-483-3p was produced at higher levels in individuals who had experienced a poor diet in their mother's wombs than those who were better nourished.

When pregnant rats were fed low protein diets their offspring had higher levels of miR-483-3p. This led to them developing smaller fat cells and left them less able to store fats in adulthood. These rats were less likely to get fat when fed a high calorie diet but were at a higher risk of developing diabetes. Rats are known to be a good model for studying huma
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Contact: Mike Davies
mike.davies@bbsrc.ac.uk
01-793-414-694
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

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