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. 2018 Nov 27;6(1):129–143. doi: 10.1002/acn3.687

Figure 6.

Figure 6

Patients with high plasmablast numbers after IVIg treatment have high GM1 IgG titers at onset. Pre‐ and posttreatment sera from GBS patients positive for GM1 IgG antibodies (n = 12) were titrated by ELISA. Data is shown stratified according to low or high plasmablast count assessed 1 week after IVIg treatment (A). A titer of <100 is considered negative. Two‐way ANOVA followed by Bonferroni correction (***P < 0.001). Subclass analysis of anti‐GM1 antibodies (B–E) demonstrated that the majority of patients do not produce anti‐GM1 antibodies of the IgG2 subclass; only one patient is positive for anti‐GM1 IgG2 1 week after treatment (C). The dotted line indicated the cutoff value (ΔOD = 0.2).