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Circadian clock may impact organ transplant success
Date:10/4/2011

w and the study's first author.

While the researchers can determine whether clock gene expression is up, down or mutated, there is currently no way to do the tests in humans. Until screening tests are identified, donors could be screened for signs of dysfunction such as a sleep disorder or even aberrant behaviors that can impair healthy clocks, such as shift work, Rudic said. "Ideally this will open up some new research avenues," he said.

Interestingly, when blood vessels from the mutant mouse stay in that mouse, disease progression is much slower. "We believe that bad clock function worsens when it intersects with disease, so if you are eating a high-fat diet or if you undergoing a serious surgery like a transplant, and you have a bad clock, disease may occur and may occur quickly," Rudic said.

In 2009, he reported in the journal Circulation that mice with mutated or missing clock genes were prone to vascular disease similar to smokers and people with high blood pressure and cholesterol. That study showed the blood vessel clocks regulate key signaling that enables blood vessel dilation and remodeling.


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Contact: Toni Baker
tbaker@georgiahealth.edu
706-721-4421
Georgia Health Sciences University
Source:Eurekalert

Page: 1 2

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