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Serum Levels of IL-6 and TNF-α May Correlate with Activity and Severity of Rheumatoid Arthritis. - PubMed - NCBI
Serum Levels of IL-6 and TNF-α May Correlate with Activity and Severity of Rheumatoid Arthritis. - PubMed - NCBI
Serum Levels of IL-6 and TNF-α May Correlate with Activity and Severity of Rheumatoid Arthritis.
Abstract
BACKGROUND We aimed to investigate the association of rheumatoid arthritis (RA) with interleukin 6 (IL-6) and tumor necrosis factor-α (TNF-α) through a meta-analysis. MATERIAL AND METHODS The case-control studies that investigated the association between RA and serum levels of IL-6 and TNF-α were retrieved strictly according to the inclusion and exclusion criteria. The statistical analysis was performed using STATA statistical software (Version 12.0, Stata Corporation, College Station, TX, USA). RESULTS Fourteen studies were enrolled in our meta-analysis, with a total of 890 patients with RA and 441 healthy people as the controls. The results of this meta-analysis revealed that the serum IL-6 and TNF-α levels of RA patients were significantly higher than in the controls, and this difference was statistically significant (IL-6: SMD=2.40, 95% CI=1.57~3.24, P<0.001; TNF-α: SMD=1.93, 95% CI=1.23~2.64, P<0.001). According to ethnic subgroup analysis, the serum IL-6 and TNF-α levels of RA patients were also significantly higher compared with the controls in Asians and Caucasians (IL-6: Asians: SMD=3.64, 95% CI=2.16~5.12, P<0.001; Caucasians: SMD=0.75, 95% CI=0.47~1.02, P<0.001; TNF-α: Asians: SMD=2.74, 95%CI=1.58~3.91, P<0.001; Caucasians: SMD=0.81, 95% CI=0.50~1.11, P<0.001). CONCLUSIONS IL-6 and TNF-α may play crucial roles in the activity and severity of RA.
- PMID:
- 26704133
- [PubMed - in process]
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