Galectin-3, Tryptophan, and AADAT as Linked Biomarkers in Rheumatoid Arthritis

Area of Science:

• Immunology
• Biochemistry
• Rheumatology

Background:

• Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by joint inflammation and potential systemic complications.
• Identifying reliable biomarkers for early diagnosis and understanding disease pathogenesis is crucial for effective RA management.

Purpose of the Study:

• To evaluate serum levels of Galectin-3, Tryptophan (TRP), and kynurenine/alpha-aminoadipate aminotransferase (AADAT) in RA patients.
• To investigate the diagnostic and prognostic value of these markers in RA.

Main Methods:

• An experimental study involving 45 RA patients and 45 healthy controls.
• Serum levels of Galectin-3, TRP, and AADAT were measured using ELISA.
• Statistical analyses included t-test, Mann-Whitney U, correlation, and ROC curve evaluation. Disease activity was assessed using DAS-28.

Main Results:

• RA patients exhibited significantly lower TRP (p<0.001) and higher Galectin-3 (p<0.001) serum levels compared to controls.
• AADAT levels showed no significant difference between groups (p=0.61).
• Galectin-3 and TRP demonstrated strong diagnostic performance (AUC=0.84 and 0.76, respectively) and correlated with disease indices.

Conclusions:

• Elevated Galectin-3 and reduced TRP are linked to RA pathogenesis.
• These markers show promise as potential biomarkers for the early diagnosis of rheumatoid arthritis.