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  • Title: Role of cytomegalovirus sero-status in the development of secondary cardiovascular events in patients with coronary heart disease under special consideration of diabetes.
    Author: Guech-Ongey M, Brenner H, Twardella D, Hahmann H, Rothenbacher D.
    Journal: Int J Cardiol; 2006 Jul 28; 111(1):98-103. PubMed ID: 16229909.
    Abstract:
    OBJECTIVE: We investigated prospectively the role of cytomegalovirus (CMV) sero-status in the development of secondary cardiovascular disease (CVD) events in patients with coronary heart disease (CHD) under special consideration of diabetes mellitus. BACKGROUND: There have been suggestions of an association between cytomegalovirus infection sero-status and development of secondary cardiovascular events. Patients with diabetes might be at higher risk since they are relatively immunocompromised. METHODS: Patients aged 30-70 undergoing an in-patient rehabilitation program after acute manifestation of coronary heart disease between January 1999 and May 2000 were included in this analysis. CMV status at baseline was measured by serum immunoglobulin G antibodies. Secondary CVD events (myocardial infarction, stroke, and cardiovascular death) were recorded during a mean follow-up period of 33.5 months. RESULTS: Among the 1033 subjects with measured IgG antibody for CMV, 56.5% were sero-positive to CMV at baseline. During follow-up, secondary CVD events occurred among 71 (6.9%) participants. Occurrence of a secondary CVD event was more common among sero-positive than among sero-negative patients (adjusted hazard ratio, HR, 1.31, 95% confidence interval (CI) 0.80-2.20), among patients with diabetes HR 2.00 (95% CI 1.20-3.25). The risk of secondary CVD events was strongly increased among patients with both a positive CMV sero-status and diabetes (adjusted HR 2.58, 95% CI 1.32-5.10) compared to CMV negative, non-diabetic patients, whereas either conditions alone was associated with a weak and non-significant increase in risk only. CONCLUSION: Our results are consistent with a possible moderate increase in risk of secondary CVD events among patients with a positive CMV sero-status, and they indicate a strongly increased risk among CMV positive patients with diabetes.
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