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| Authors | S.C. Christiansen, I.A. Naess, S.C. Cannegieter, J. Hammerstrom, F.R. Rosendaal, P.H. Reitsma | | Title | Inflammatory cytokines as risk factors for a first venous thrombosis: A prospective population-based study |
| Journal | PLOS Medicine |
| Volume | 8 |
| Year | 2006 |
| Pages | e334- |
| ISSN | 1549-1277 |
| Faculty | Faculty of Medicine (AMC-UvA) |
| Keywords | Deep-vein thrombosis; Procoagulant activity; Posstthrombotic syndrome; Coagulation; Disease |
| Abstract | Background In case-control studies, elevated levels of interleukins 6 and 8 have been found to be associated with an increased risk of venous thrombosis (VT). Because of the design of these studies, it remained uncertain whether these alterations were a cause or a result of the VT. In order to distinguish between the two, we set out to measure the levels of six inflammatory markers prior to thrombosis in a population-based cohort using a nested case-cohort design. Methods and Findings Between August 1995 and June 1997, blood was collected from 66,140 people in the second Norwegian Health Study of Nord-Trondelag (HUNT2). We identified venous thrombotic events occurring between entry and 1 January 2002. By this date we had registered 506 cases with a first VT; an age- and sex-stratified random sample of 1,464 controls without previous VT was drawn from the original cohort. Levels of interleukins 1 beta, 6, 8, 10, 12p70, and tumour necrosis factor-alpha were measured in the baseline sample that was taken 2 d to 75 mo before the event ( median 33 mo). Cut-off points for levels were the 80th, 90th, and 95th percentile in the control group. With odds ratios ranging from 0.9 (95% CI: 0.6-1.5) to 1.1 ( 95% CI: 0.7-1.8), we did not find evidence for a relationship between VT and an altered inflammatory profile. Conclusions The results from this population sample show that an altered inflammatory profile is more likely to be a result rather than a cause of VT, although short-term effects of transiently elevated levels cannot be ruled out. |
| Document type | Article |
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