Increased Intestinal Permeability and Articular Involvement in Systemic Lupus Erythematosus Patients-A Mutually...

Area of Science:

• Immunology
• Gastroenterology
• Rheumatology

Background:

• Systemic lupus erythematosus (SLE) is an autoimmune disease involving complex immune interactions.
• Increased intestinal permeability, a marker of gut leakage, is potentially linked to SLE.
• Zonulin is a key protein regulating intestinal permeability and a biomarker for gut leakage.

Purpose of the Study:

• To assess intestinal permeability in Caucasian SLE patients by measuring serum zonulin levels.
• To investigate the relationship between zonulin, SLE disease activity, and organ involvement.

Main Methods:

• Cross-sectional study design with 41 SLE patients and 29 controls.
• Plasma zonulin levels measured using indirect ELISA.
• Disease activity assessed using the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI).

Main Results:

• SLE patients exhibited significantly higher plasma zonulin levels compared to controls (7.566 ± 1.368 ng/mL vs. 2.306 ± 0.286 ng/mL, p < 0.01).
• Plasma zonulin levels did not correlate with SLE disease activity (SLEDAI).
• SLE patients with articular involvement showed paradoxically lower plasma zonulin levels than those without.

Conclusions:

• Elevated zonulin suggests increased intestinal permeability in Caucasian SLE patients.
• Zonulin levels are not associated with disease activity or articular manifestations in SLE.
• Findings support a potential inverse inflammatory relationship between the gut mucosa and synovium in SLE.