Beta2-Microglobulin Can Be a Disease Activity Marker in Systemic Lupus Erythematosus |
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Authors: | Hyoun-Ah Kim Ja-Young Jeon Jeong-Moon Yoon Chang-Hee Suh |
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Institution: | 1. Department of Pediatric Urology, Children''s Hospital of Michigan, Detroit, MI;2. Institute of Environmental Health Sciences, Wayne State University, Detroit, MI |
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Abstract: | BackgroundTo investigate the clinical significance of beta2-microglobulin in Korean patients with systemic lupus erythematosus (SLE).MethodsBlood samples were collected from patients with SLE (n = 100) and normal healthy controls (n = 50). The level of beta2-microglobulin was investigated by enzyme-linked immunosorbent assay. Serial samples from SLE patients were collected at 4.2 ± 2.6 months after first sampling.ResultsThe beta2-microglobulin levels of the SLE patients (2.64 ± 0.11 μg/mL) were higher than the normal controls (2.14 ± 0.04 μg/mL, P < 0.001). The patients with SLE with serositis, oral ulcer, or lupus nephritis had significantly higher beta2-microglobulin levels than those without, respectively. A significant correlation was found between the beta2-microglobulin level and each of anti-dsDNA antibody, hemoglobin, complement, and SLE Disease Activity Index. In sequential sampling of patients with SLE, a positive correlation was found between the change of the SLE Disease Activity Index and the change of the beta2-microglobulin levels.ConclusionsThese data suggest that the measurement of beta2-microglobulin seem to be a useful addition to the laboratory tests that can help in assessment of disease activity of SLE. |
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