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01 April 2010

Increased mean platelet volume in chronic hepatitis B patients with inactive disease

Ozge TurhanABDEF, Erkan CobanABCDEF, Dilara InanBDFG, Ata Nevzat YalcinBDFG

Med Sci Monit 2010; 16(4): CR202-205 :: ID: 878503

Abstract

Background
Hepatitis B virus (HBV) infection is a major public health problem worldwide, responsible for considerable morbidity and mortality from chronic liver disease. Conflicting findings on the possible association between HBV surface antigen (HBsAg) positivity, indicating inactive HBsAg carrier status, and atherosclerosis have been reported. Platelet activation and aggregation are central processes in the pathophysiology of atherosclerosis. Mean platelet volume, a determinant of platelet activation, is a newly emerging risk factor for atherothrombosis. Elevated MPV levels have been identified as an independent risk factor for myocardial infarction in patients with coronary heart disease, and for death or recurrent vascular events after myocardial infarction. Moreover, increased platelet size has been reported in patients with vascular risk factors such as diabetes mellitus, in patients with acute ischemic stroke, and essential hypertension. According to our knowledge, there has been no previous study of MPV in inactive HBsAg carriers. Therefore, we have investigated the possible association between HBsAg positivity and MPV.
Material and Method
We selected 260 inactive HBsAg carriers, and 80 healthy control subjects matched for age, sex, and body mass index.
Results
The MPV level was significantly higher in the inactive HBsAg carrier group than in the control group (8.8+/-1.2 fl vs 8.1+/-0.9 fl, P=.001).
Conclusions
Our results suggest that inactive HBsAg carriers tend to have relatively increased platelet activation and an atherothrombotic risk.

Keywords: Hepatitis B - virology, Chronic Disease, Case-Control Studies, Body Mass Index, Blood Platelets - cytology, Adult, Risk, Thrombosis - virology

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