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      Circulating Levels of Secretory Type II Phospholipase A 2 Predict Coronary Events in Patients with Coronary Artery Disease

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          Abstract

          Background —The circulating levels of secretory nonpancreatic type II phospholipase A 2 (sPLA 2 ) are increased in various chronic inflammatory diseases and the increase in the levels correlates with the disease severity. sPLA 2 may possibly play a role in atherogenesis and is highly expressed in atherosclerotic arterial walls that are known to have inflammatory features. Thus, this study prospectively examined whether circulating levels of sPLA 2 may have a significant risk and prognostic values in patients with coronary artery disease (CAD).

          Methods and Results —Plasma levels of sPLA 2 were measured in 142 patients with CAD and in 93 control subjects by a radioimmunoassay. The sPLA 2 levels had a significant and positive relations with serum levels of C-reactive protein, a marker of systemic inflammation, and with the number of the traditional coronary risk factors associated with individuals. Multivariate logistic regression analysis showed that higher levels of sPLA 2 (>246 ng/dL; 75th percentile of sPLA 2 distribution in controls) were a significant and independent risk factor for the presence of CAD. In multivariate Cox hazard analysis, the higher levels of sPLA 2 were a significant predictor of developing coronary events (ie, coronary revascularization, myocardial infarction, coronary death) during a 2-year follow-up period in patients with CAD independent of other risk factors, including CRP levels, an established inflammatory predictor.

          Conclusions —The increase in circulating levels of sPLA 2 is a significant risk factor for the presence of CAD and predicts clinical coronary events independent of other risk factors in patients with CAD; these results may reflect possible relation of sPLA 2 levels with inflammatory activity in atherosclerotic arteries.

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          Most cited references26

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            Atherosclerosis, the principal cause of heart attack, stroke and gangrene of the extremities, is responsible for 50% of all mortality in the USA, Europe and Japan. The lesions result from an excessive, inflammatory-fibroproliferative response to various forms of insult to the endothelium and smooth muscle of the artery wall. A large number of growth factors, cytokines and vasoregulatory molecules participate in this process. Our ability to control the expression of genes encoding these molecules and to target specific cell types provides opportunities to develop new diagnostic and therapeutic agents to induce the regression of the lesions and, possibly, to prevent their formation.
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              Evidence to support an important role of oxidative modification in mediating the atherogenicity of LDL continues to grow. New hypotheses suggest mechanisms by which Ox-LDL or products of Ox-LDL can affect many components of the atherogenic process, including vasomotor properties and thrombosis, as well as lesion initiation and progression itself. These ideas suggest new approaches, that in combination with lowering of plasma cholesterol, could lead to the prevention of atherosclerosis and its complications.
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                Author and article information

                Journal
                Circulation
                Circulation
                Ovid Technologies (Wolters Kluwer Health)
                0009-7322
                1524-4539
                September 21 1999
                September 21 1999
                : 100
                : 12
                : 1280-1284
                Affiliations
                [1 ]From the Department of Cardiovascular Medicine, Kumamoto University School of Medicine, Kumamoto, Japan.
                Article
                10.1161/01.CIR.100.12.1280
                10491371
                61977d35-0606-4677-b329-90abed9b205b
                © 1999
                History

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