期刊
RHEUMATOLOGY
卷 48, 期 2, 页码 113-118出版社
OXFORD UNIV PRESS
DOI: 10.1093/rheumatology/ken443
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资金
- Dudley Group of Hospitals R&D Directorate cardiovascular program grant
- Arthritis Research Campaign [17682]
- Empirikion Foundation, Athens, Greece
Objectives. Part of the deleterious effects of systemic inflammation on the cardiovascular system of patients with RA may be exerted via increased propensity to hypertension. IL-6 and TGF-1 are important regulators of the inflammatory response. In some, but not all, studies, IL6 174G/C (rs1800795) and TGFB1 869T/C (rs1982073) gene polymorphisms have been associated with hypertension in the general population. The present study addressed their potential association with hypertension in RA patients. Methods. TGFB1 869T/C and IL6 174G/C were identified in 400 RA patients and 422 local, non-RA controls using real-time PCR and melting curve analysis. Binary logistic and linear regression models were used to identify the independence of the effects of the polymorphisms on hypertension. Results. Genotypic and allelic frequencies of the two polymorphisms were similar in RA and controls. Within the RA group, there was no significant association between IL6 174G/C and hypertension, but TGF 869T-allele carriers had significantly increased prevalence of hypertension compared with CC homozygotes (70.2 vs 55.2; P 0.023). This association remained significant after adjustment for other hypertension risk factors and medication (odds ratio 1.96; 95 CI 1.02, 3.77; P 0.044), and was more pronounced in patients with increased systemic inflammation. Conclusions. This study suggests an association of TGFB1 869T/C, but not of IL6 174G/C, with hypertension in RA patients. If this finding is confirmed in prospective studies, this polymorphism could be used as a screening tool for RA patients with higher risk of developing hypertension and lead to increased surveillance and earlier treatment.
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