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  • Title: TNF-alpha: a link between hypertriglyceridaemia and inflammation in SLE patients with cardiovascular disease.
    Author: Svenungsson E, Fei GZ, Jensen-Urstad K, de Faire U, Hamsten A, Frostegard J.
    Journal: Lupus; 2003; 12(6):454-61. PubMed ID: 12873047.
    Abstract:
    Patients with systemic lupus erythematosus (SLE) are at high risk of cardiovascular disease (CVD). Tumour necrosis factor-alpha (TNF-alpha) has been implicated in the pathophysiological processes of both SLE and CVD. This study focuses on the role of TNF-alpha and its soluble receptors in SLE-related CVD. In summary, 26 women (52 +/- 8.2 years) with SLE and a history of CVD (SLE cases) we compared with 26 age-matched women with SLE and no clinical manifestations of CVD (SLE controls) and 26 age-matched population-based control women (population controls). Plasma concentrations of circulating TNF-alpha, TNF-alpha receptor 1 (sTNFR1) and TNF-a receptor 2 (sTNFR2) were determined by ELISA. TNF-alpha, sTNFR1 and sTNFR2 were raised in SLE cases as compared to SLE controls (P = 0.009; P = 0.001; P = 0.001, respectively), and SLE controls had higher levels than population controls (P = 0.001; P = 0.02; P = 0.001, respectively). Exclusively in the SLE case group there was a striking positive correlation between TNF-alpha and plasma triglycerides (r = 0.57, P < 0.002), VLDL triglycerides (r = 0.54, P = 0.004) and VLDL cholesterol (r = 0.58, P = 0.002). Furthermore, TNF-alpha correlated with the waist-hip ratio but not with estimated insulin resistance. TNF-alpha may thus be a major factor in SLE-related CVD acting both by contributing to hypertriglyceridaemia and by promoting atherosclerosis-related inflammation. sTNFR1 and sTNFR2 are strongly associated with CVD in SLE but their exact roles in disease development remain to be elucidated.
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