GPT and psoriasis: In the current study the PCA extracted 4 factors consisted of metabolic and redox status parameters in a group of psoriasis patients as following: oxidative stress-inflammation related factor (i.e., HDL-c, CAT, AOPP and CRP), renal function related factor (i.e., creatinine and urea), metabolic related factor (i.e., glucose and TG) and oxidative stress-hepatic related factor (i.e., MDA, ALT).