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American Chemical Society's Weekly PressPac -- Jan. 28, 2009
Date:2/2/2009

ropical Products Laboratory
Agricultural Research Service
U.S. Department of Agriculture
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ARTICLE #2 FOR IMMEDIATE RELEASE

Toward a urine test for diagnosing heart disease
Journal of Proteome Research

Researchers in Australia are reporting an advance toward the first urine test for diagnosing coronary artery disease (CAD), the condition responsible for most of the 1.5 million heart attacks that occur in the United States each year. The test could save lives in the future by allowing earlier diagnosis and monitoring of the disease, which is the No. 1 cause of death in the United States, the researchers say. Their report is in the Nov. 19, 2008 issue of ACS' Journal of Proteome Research, a monthly publication.

In the new study, Karlheinze Peter and colleagues note that the most reliable test for diagnosing CAD is angiography, an invasive test in which doctors inject special dyes into the body to visualize, via X-rays, fatty plaque deposits in the arteries of the heart. However, the technique is invasive, expensive, time-consuming, and may miss CAD in its earliest stages, they say.

To develop a faster, more convenient test, the scientists collected urine samples from a group of 67 patients 41 with CAD and 26 without and analyzed the samples for differences in protein content. Using a newly developed method, they identified a group of 17 peptides (building blocks of proteins) that appear to be directly associated with CAD. These urine-based peptides indicated the presence of the disease with an 84 percent accuracy rate when compared to CAD cases confirmed using angiography, the researchers say, underscoring their potential for diagnostic screening. MTS

ARTICLE #2 FOR IMMEDIATE RELEASE
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Contact: Michael Woods
m_woods@acs.org
202-872-4400
American Chemical Society
Source:Eurekalert  

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