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Monday, July 30, 2007

Diesel Fumes Team Up With Cholesterol for Atherosclerosis

Diesel fumes synergistically link up with cholesterol to activate genes that turn up atherosclerosis and vessel inflammation, according to Andre Nel, M.B.Ch.B., Ph.D., of the University of California, Los Angeles, and colleagues.
In vitro and mouse studies revealed that a low dose of diesel exhaust particles combined with oxidized phospholipids generated in LDL cholesterol upregulated 1,555 genes, of which the most upregulated clusters were in pathways related to vascular inflammation and atherosclerosis, they reported in the July 26 issue of Genome Biology.
Of the upregulated genes, 43% exhibited synergy when the diesel particles and oxidized phospholipids were combined.
"Our gene-expression

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