The researchers said CO's protective effect may be due to:
- Its ability to dilate blood vessels, which increases blood flow.
- Its anti-inflammatory properties, which prevent cell death by inflammation.
- Its capacity to reduce water in the brain. Excessive water in the brain increases intracranial pressure, which kills brain cells.
The study was published in the Dec. 15 online issue of Neurotoxicity Research.
Each year in the United States, about 700,000 people have a stroke. Of those, 87 percent suffer an ischemic stroke, caused by a blocked artery.
More information
The U.S. Environmental Protection Agency has more about carbon monoxide.
-- Robert Preidt
SOURCE: JAMA/Archives journals, news release, Dec. 15, 2008
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