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U of I study: exercise to avoid gallstones!
Date:2/13/2008

ver and intestine that are involved in cholesterol absorption and may affect gallstone development.

In the exercised mice, we saw an increase in the expression of two genes (LDLr and SRB1) that help bring cholesterol into the liver to clear?it from the circulation. But we also found that a protein called Cyp27 was upregulated about two a half times; this resulted in there being more bile acids to solubilize the increased cholesterol so it didnt turn into gallstones.

Taken together, the differences in gene expression between the exercised and sedentary mice in this study show how exercise training could simultaneously improve cholesterol levels while also inhibiting gallstone formation,?he said.

Previous observational studies have suggested that people who are physically fit have fewer gallstones and lower cholesterol, but laboratory studies had not confirmed the link.

Wilund said these mice are a useful model because humans have a similar set of genes that regulate liver and bile cholesterol metabolism. He also said that human studies would be difficult to perform because of the number of years it takes for people to develop gallstones.

We certainly found the changes in gene expression in the exercised animals very intriguing,?he said. The results add to a body of evidence that supports the importance of physical activity for good health.?/p>

Co-authors of the study are Laura A. Feeney, Emily J. Tomayko, and Hae R. Chung of the University of Illinois and Kijin Kim of Keimyung University in Daegu, Korea. Funding was provided by the University of Illinois Research Board.


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Contact: Phyllis Picklesimer
p-pickle@uiuc.edu
217-244-2827
University of Illinois at Urbana-Champaign
Source:Eurekalert

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