Ultrasound measurements of carotid intima-media thickness and plaque in HIV-infected patients on the Mediterranean diet

Višković, Klaudija; Rutherford, George W.; Sudario, Gabriel; Stemberger, Lorna; Brnić, Zoran; Begovac, Josip
August 2013
Croatian Medical Journal;Aug2013, Vol. 54 Issue 4, p330
Academic Journal
Aim To evaluate the influence of food habits, specifically adherence to the Mediterranean diet, on carotid intimamedia thickness (CIMT) and the presence of plaques in HIV-infected patients taking antiretroviral therapy (ART) and non-HIV-infected participants and to determine if HIV infection contributes independently to subclinical atherosclerosis. Methods We conducted a cross-sectional study of 110 HIV-infected patients on ART and 131 non-HIV-infected participants at the University Hospital for Infectious Diseases in Zagreb, Croatia, from 2009-2011. CIMT measurement and determination of carotid plaque presence was detected by ultrasound. Adherence to the Mediterranean diet was assessed by a 14-point food-item questionnaire. Subclinical atherosclerosis was defined by CIMT≥0.9 mm or ≥1 carotid plaque. Results In HIV-infected patients, subclinical atherosclerosis was associated with older age (P < 0.001; Mann-Whitney test), higher body mass index (P = 0.051; Mann-Whitney test), hypertension (P < 0.001; ?² test), and a lower Mediterranean diet score (P = 0.035; Mann-Whitney test), and in non-HIV-infected participants with older age (P < 0.001; Mann-Whitney test) and hypertension (P = 0.006; ?² test). Multivariate analysis showed that decreased adherence to the Mediterranean diet was associated with higher odds of subclinical atherosclerosis (odds ratio [OR] 2.28, 95% confidence interval [CI] 1.10-4.72, P = 0.027) as was current smoking (OR 2.86, 95% CI 1.28-6.40), hypertension (OR 3.04, 95% CI 1.41-6.57), and male sex (OR 2.35, 95% CI 0.97- 5.70). There was a significant interaction of age and HIV status, suggesting that older HIV-infected patients had higher odds of subclinical atherosclerosis than controls (OR 3.28, 95% CI 1.24-8.71, P = 0.017 at the age of 60 years). Conclusion We confirmed the association between lower adherence to the Mediterranean diet and increased risk of subclinical atherosclerosis and found that treated HIV infection was a risk factor for subclinical atherosclerosis in older individuals.


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