Evaluation of Serum Level of Claudin‐ 3 and Its Association with Disease Severity in Patients with Psoriasis in Iraqi patients

Background Psoriasis is a prevalent inflammatory skin disease. Psoriasis is a complex illness in which environmental variables acting on individuals with unique genetic predisposition causing immunological dysregulation. Claudins are transmembrane proteins that help to generate tight junctions by binding to the actin cytoskeleton. Claudin 3 in the blood is thought to be a good indicator of intestinal permeability. Objective: The aim of this study was to detect of the alteration of claudin-3 in psoriasis patient and find the correlation between severity and concentration of the claudin-3. Patients and methods: forty psoriatic patients (25males and 15 females) and thirty normal healthy controls (19 men and 11 females) who were age and sex matched to the cases group were included in this study. They were chosen at random from Al Fallujah hospital Dermatology Department outpatient clinic. Result: When compared to the control group, the psoriasis group had substantially greater levels of claudin-3 (mean=2.18 ± 0.16 versus 1.27 ± 0.03; p0.0001). Furthermore, the amount of claudin-3 rose progressively as the severity grade increased (001). There were no significant correlations between claudin-3 levels and gender, dietary status, or family history in the psoriasis group (p>0.05 for each). Conclusion: Claudin-3 levels were considerably greater in psoriasis patients than in healthy controls. PASI levels were shown to be linked to claudin-3 levels.