Genotoxicity assessment using comet assay in Behcet's disease patients

Area of Science:

• Immunology
• Genetics
• Dermatology

Background:

• Behcet's disease (BD) is a chronic inflammatory disorder of unknown etiology.
• Characterized by recurrent oral ulcers, genital ulcers, uveitis, and skin lesions.
• Ocular manifestations are a significant concern due to their potential for permanent vision loss.

Purpose of the Study:

• To investigate genotoxicity levels in Behcet's disease patients compared to healthy controls.
• To determine if colchicine (COL) treatment influences genotoxicity in BD patients.
• To explore the relationship between disease activity and genotoxicity in BD.

Main Methods:

• Employed the alkaline single cell gel electrophoresis (COMET assay) to assess DNA damage in isolated lymphocytes.
• Analyzed genotoxicity parameters, specifically percent tail DNA, in 42 COL-treated BD patients, 9 non-COL BD patients, and 36 healthy controls.
• Compared genotoxicity levels between BD patients and controls, and between COL users and non-users, as well as active vs. inactive disease states.

Main Results:

• BD patients demonstrated significantly higher genotoxicity (percent tail DNA) than healthy controls (13.38% vs. 2.77%, P<0.0001).
• No significant difference in genotoxicity was found between BD patients treated with colchicine and those not using COL.
• Genotoxicity was significantly higher in active BD patients compared to inactive BD patients (19.75% vs. 11.83%, P<0.05).

Conclusions:

• Genotoxicity, as measured by the COMET assay, is elevated in Behcet's disease patients.
• The observed genotoxicity is associated with Behcet's disease itself, independent of colchicine treatment.
• Disease activity appears to correlate with increased levels of genotoxicity in BD.