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Why People on Dialysis Have Increased Risk of Heart Attack Decoded

by Kathy Jones on May 31, 2013 at 10:37 PM
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 Why People on Dialysis Have Increased Risk of Heart Attack Decoded

Clinicians were always aware that patients with advanced kidney disease who are undergoing hemodialysis are highly susceptible to heart attacks and other cardiovascular complications. However the reasons for this were not known.

New research findings published in the Journal of Leukocyte Biology show that uremic toxins, which are not removed by hemodialysis, increase heart attack risk. The same scientists also have found what can reduce this risk: an oral adsorbent called "AST-120."

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"Treatment with AST-120, an oral adsorbent, will not only delay the progression of kidney disease, but may also prevent future heart attack,'" said Masayuki Yoshida, M.D., a researcher involved in the work from the Life Science and Bioethics Research Center at Tokyo Medical and Dental University in Tokyo, Japan.

To make this discovery, scientists used two groups of mice with kidney failure. The first group received AST-120 and the second group did not. When monocytes taken from both sets of mice were subjected to flow cytometry, Mac-1 expression and oxidative stress was reduced in the group with AST-120. For the first time, a study concludes that AST-120 reduces monocyte inflammation in kidney disease, and may reduce cardiovascular diseases including myocardial infarction and stroke in end-stage kidney patients.
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"This discovery has the potential to save lives." said John Wherry, Ph.D., Deputy Editor of the Journal of Leukocyte Biology, "While the precise connection between monocytes in the blood, uremic toxins and cardiovascular disease appears quite promising, however, more studies are needed. Nevertheless, the insights from these AST-120 studies in a model of kidney failure should open the doors to further research and therapies."



Source: Eurekalert
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