Figure 6

Correlation between autoantibodies to ribosomal P proteins and anti-neuronal cell antibodies. The correlation of antibodies to the C-terminal 22-amino acid sequence of ribosomal P proteins (anti-P_C22) (a), those to the ribosomal P protein epitopes other than the C-terminal 22-amino acid sequence (anti-P_EX.C22) (b), or those to recombinant ribosomal P0 protein lacking the C-terminal 22-amino acid sequence (anti-C22-depleted rP0) (c) with anti-neuronal cell antibodies (anti-N) in cerebrospinal fluid from systemic lupus erythematosus (SLE) patients, including 52 patients (a,b) or 47 patients (c) with diffuse neuropsychiatric SLE (NP-SLE) and 19 patients (a,b) or 18 patients (c) with focal NP-SLE, was analyzed. Statistical analysis was performed by Spearman rank correlation test.