Washington: Young, healthy adult volunteers exposed for two hours to ozone developed physiological changes tied to cardiovascular damage.They showed evidence of vascular inflammation, a potential reduced ability to dissolve artery-blocking blood clots, and changes in the autonomic nervous system that controls the heart`s rhythm. The changes were temporary and reversible in these participants.Pollutants from vehicles, power plants, industry, chemical solvents and consumer products create ground level ozone by reacting in the presence of sunlight. Recent studies have linked acute exposure to ozone and death but little is known about the underlying pathways responsible, the journal Circulation reports."This study provides a plausible explanation for the link between acute ozone exposure and death," said Robert B. Devlin, senior scientist at the US Environmental Protection Agency`s (EPA) National Health and Environmental Effects Research Lab, who led the study, according to an EPA statement.
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