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Science 22 July 1988:
Vol. 241. no. 4864, pp. 453 - 456
DOI: 10.1126/science.3393911
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Articles

Science, Vol 241, Issue 4864, 453-456
Copyright © 1988 by American Association for the Advancement of Science

articles

Fish oils inhibit endothelial cell production of platelet-derived growth factor-like protein

PL Fox and PE DiCorleto

Department of Brain and Vascular Research, Cleveland Clinic Research Institute, OH 44195.

Diets rich in fish and fish oils are associated with a reduced risk of cardiovascular disease and atherosclerosis. The interaction of a commercial fish oil extract (MaxEPA) with vascular endothelial cells (ECs) was studied as a possible mechanism for this protective effect. MaxEPA almost completely inhibited EC production of platelet-derived growth factor-like protein (PDGFc) while other lipids had a lesser effect or no effect. Overall protein synthesis was not reduced, nor was the inhibition due to defective secretion or increased degradation of the growth factor. Antioxidants suppressed the inhibitory activity of MaxEPA indicating that free radical oxidative processes were required for the inhibition. These results suggest that fish oils may suppress intimal smooth muscle cell proliferation by decreasing the production of EC-derived paracrine growth factors. This inhibitory process represents a possible molecular mechanism for the antiatherosclerotic action of marine lipids.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)