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Interleukin-17A-induced production of acute serum amyloid A by keratinocytes contributes to psoriasis pathogenesis

Fig 4

A-SAA mRNA expression in the skin and the serum of psoriatic and control patients.

A-SAA mRNA expression in (A) the skin and (B) the serum of psoriatic patients is compared to healthy controls. Positive correlations of (C) serum A-SAA and CRP protein levels and (D) A-SAA mRNA expression in the skin and A-SAA protein concentrations in the serum of psoriatic patients. A-SAA mRNA levels from psoriatic skins are increased with (E) psoriasis severity, as evaluated by PASI, (F) disease duration, (G) cigarette smoking and (H) metabolic syndrome, respectively. A-SAA mRNA expression from 37 psoriatic skins was compared to 28 healthy skins and quantified by RT-qPCR. A-SAA protein concentrations in 17 psoriatic sera were determined by immunonephelemetry and compared to those of 11 healthy sera. Values are expressed as mean ± SEM. Statistical comparisons were performed using t test or Spearman rank correlation test (*p<0.05; **p<0.01; ***p<0.0001; ns, non-significant).

Fig 4

doi: https://doi.org/10.1371/journal.pone.0181486.g004