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Correlation of Serum CTX-Ⅱ and HDAC3 Levels with Immune Function and Disease Activity in Patients with Rheumatoid Arthritis |
XIONG Ying, XIAO Wei, REN Xiang, et al |
The First People's Hospital of Changde City, Hunan Changde 415000, China |
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Abstract Objective: To observe the changes in serum type Ⅱ collagen C-terminal peptide (CTX-Ⅱ) and histone deacetylase 3 (HDAC3) levels in patients with rheumatoid arthritis (RA),and to analyze their relationship with immune function and disease activity. Methods: A total of 84 RA patients (RA group) and 84 healthy people (NC group) admitted to our hospital were gathered.The changes in serum CTX-Ⅱ,HDAC3,immune function indexes [proportion of immunoglobulin (Ig) A,IgG,IgM,CD3+,CD4+,CD8+ T cells] and disease activity related indexes [C-reactive protein (CRP),erythrocyte sedimentation rate (ESR)] were analyzed.Pearson method was applied to analyze the correlation of serum CTX-Ⅱ and HDAC3 with immune indexes and disease activity-related indexes,respectively. Results: The levels of CTX-Ⅱ(9.26±1.84 vs 4.59±0.62) and HDAC3(83.72±13.51 vs 20.15±4.90) in the RA group were higher than those in the NC group (t=22.044,40.542,P<0.05).The levels of CTX-Ⅱ(7.37±1.71 vs 10.75±1.94) and HDAC3(72.97±12.10 vs 92.18±14.62) in the remission group were lower than those in the active group (t=8.347,7.940,P<0.05).The proportion of CD3+(64.42±6.91 vs 70.42±7.34) and CD4+(34.80±5.96 vs 39.74±5.80) T cells in the RA group was lower than that in the NC group,while the levels of CD8+(31.68±6.15 vs 29.62±7.15) T cells,IgM(2.06±0.39 vs 1.47±0.30),IgA(2.96±0.50 vs 1.51±0.36),IgG(15.49±3.05 vs 11.83±2.19),ESR(28.32±7.60 vs 13.75±2.18),CRP(10.94±2.02 vs 6.08±0.73) were obviously higher than those in the NC group (P<0.05).The CD3+(62.94±6.60 vs 66.30±7.30) and CD4+(33.57±5.74 vs 36.36±6.24) T cells in the active group were lower than those in the remission group,and the levels of IgM(2.19±0.41 vs 1.89±0.36),IgA(3.08±0.54 vs 2.81±0.45),IgG(16.16±3.27 vs 14.64±2.77),ESR(30.06±8.15 vs 26.11±6.90),CRP(12.37±2.24 vs 9.12±1.74) were higher than those in the remission group (P<0.05).Correlation analysis showed that serum CTX-Ⅱ was positively correlated with ESR,CRP and disease activity score in 28 joints (DAS28) (r=0.572,0.495,0.809,all P=0.000); serum HDAC3 was negatively correlated with the proportions of CD3+ and CD4+ T cells,respectively (r=-0.529,-0.464,P=0.000),and was positively correlated with IgM,IgA,IgG,ESR,CRP and DAS28 (r=0.460,0.491,0.445,0.540,0.519,0.864,all P<0.05). Conclusion: Serum levels of CTX-Ⅱ and HDAC3 are elevated in RA patients compared to healthy individuals.CTX-Ⅱ is associated with disease activity in RA,while HDAC3 is related to immune dysfunction and disease activity.
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