Rheumatology Advance Access published online on April 9, 2008
Rheumatology, doi:10.1093/rheumatology/ken090
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Cardiovascular risk profile of patients with psoriatic arthritis compared to controls—the role of inflammation
1Department of Medicine & Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong and 2Department of Medicine and Geriatrics. Taipo Hospital, Hong Kong.
Correspondence to:
L.-S. Tam, Department of Medicine and Therapeutics, The Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong. E-mail: tamls_813{at}yahoo.com
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Abstract |
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Objective. To examine the distribution of traditional and novel risk factors of cardiovascular disease (CVD) in patients with PsA compared with healthy controls.
Methods. We compared risk factors for CVD between 102 consecutive PsA patients and 82 controls, adjusting for BMI. We also assessed the role of inflammation on the CVD risk factor by using a BMI and high-sensitivity CRP (hsCRP)-adjusted model.
Results. The BMI of PsA patients were significantly higher than healthy controls. After adjusting for the BMI, PsA patients still have a higher prevalence of diabetes mellitus (DM) [odds ratio (OR) 9.27, 95% CI 2.09, 41.09) and hypertension (OR 3.37, 95% CI 1.68, 6.72), but a lower prevalence of low high density lipoprotein (HDL) cholesterol (OR 0.16, 95% CI 0.07, 0.41). PsA patients have significantly increased systolic and diastolic blood pressures, insulin resistance and inflammatory markers (hsCRP and white cell count) compared to controls. PsA patients have higher HDL cholesterol and apolipoprotein (Apo) A1 levels; and lower total cholesterol (TC) and low density lipoprotein cholesterol levels; and a lower TC/HDL ratio. However, the Apo B level (P < 0.05), and the Apo B/Apo A1 ratio (P = 0.07) were higher in PsA patients. Further adjustment for hsCRP level rendered the differences in the prevalence of hypertension and DM; the TC, and sugar levels; and white cell count non-significant between the two groups; while the differences in other parameters remained significant.
Conclusion. These data support the hypothesis that PsA may be associated with obesity, hypertension, dyslipidaemia and insulin resistance because of the shared inflammatory pathway.
KEY WORDS: PsA, Obesity, Hypertension, Dyslipidaemia, Insulin resistance, Inflammatory markers
Submitted 25 October 2007;
revised version accepted 5 February 2008.
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