Association between IgG4 Autoantibody and Complement Abnormalities in Systemic Lupus Erythematosus

Figure 2

The correlations between serum levels of anti-nuclear IgG4 in SLE patients and clinical parameters. Detection of serum levels of IgG4 and anti-nuclear IgG4 was conducted by ELISA as described in Section 2. Serum levels of albumin, C3, Scr, SUA, and 24-hour urinary protein were analyzed using a commercial kit as described in Section 2.2. The correlations between serum levels of anti-nuclear IgG4 and serum levels of C3, albumin, total IgG4, and 24-hour urinary protein were analyzed using Spearman’s rank correlation coefficient. The value was considered statistically significant if it was less than 0.05. (, newly diagnosed SLE patients).

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