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The expression and clinical significance of TNF-α in serum and synovial fluid in patients with gouty arthritis |
LAI Aiyun XU Jian TAO Li |
Department of Rheumatology and Immunology, First Affiliated Hospital of Kunming Medical University, Yunnan Province, Kunming 650032, China |
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Abstract Objective To study the expression and clinical significance of tumor necrosis factor-α (TNF) in serum and synovial fluid in patients with gouty arthritis (GA). Methods Eighty GA patients in First Affiliated Hospital of Kunming Medical University from December 2016 to November 2017 were selected as the observation group and then divided into two subgroups according to the severity of the disease: observation group 1 (36 cases, severe) and observation group 2 (44 cases, mild). Both were treated with colchicine and etoricoxib. Sixty healthy people were selected as the control group at the same time. The treatment outcome were record and the levels of TNF-α in serum and synovial fluid were detected in the three groups. The expression of TNF-α in serum and synovial fluid of patients with different therapeutic effects and during treatment were compared. Results Thirty-one cases were cured, 24 cases were markedly effective, 21 cases were effective, 4 cases were ineffective, the markedly effective rate was 68.75%. The TNF-α levels of serum and synovial fluid in the observation group 1 and group 2 at admission were significantly higher than those of the control group, with statistically significant differences (P < 0.05). The level of TNF-α in synovial was significantly higher than that of serum in the observation group (P < 0.05). At the treatment of 10 d and 2 weeks, the TNF-α level in serum and synovial fluid in the observation group 1 and group 2 were significantly lower than those of admission (P < 0.05). The TNF-α level in synovial fluid in the effective group were significantly lower than that of ineffective group at admission and 2 weeks after treatment; 2 weeks after treatment, the TNF-α level in serum and synovial fluid were all higher than those of admission, with statistically significant differences (P < 0.05). Conclusion The level of TNF-α in serum and synovial from GA patients are significantly higher than healthy people. To monitor the level of TNF-α in the synovial fluid of the affected limb is helpful to evaluate the therapeutic effect and guide clinical intervention.
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