MECHANISTIC INSIGHTS INTO THE ANTI-INFLAMMATORY AND ANTI-ARTHRITIC POTENTIAL OF PHYTOCHEMICAL-RICH MEDICINAL PLANT EXTRACTS

Paper Title

MECHANISTIC INSIGHTS INTO THE ANTI-INFLAMMATORY AND ANTI-ARTHRITIC POTENTIAL OF PHYTOCHEMICAL-RICH MEDICINAL PLANT EXTRACTS

Abstract

Rheumatoid arthritis (RA) is a progressive autoimmune inflammatory disorder characterized by synovial hyperplasia, cytokine overexpression, oxidative stress, and irreversible joint destruction. Although synthetic anti-inflammatory drugs remain the primary treatment modality, their prolonged use leads to severe systemic complications. Phytochemical-rich medicinal plants represent a promising multi-target therapeutic strategy due to their antioxidant, immunomodulatory, and cytokine-suppressive properties. The present study investigates mechanistic aspects of anti-arthritic activity of selected medicinal plant extracts through phytochemical characterization, antioxidant profiling, protein denaturation inhibition, and membrane stabilization assays. The extracts demonstrated significant radical scavenging activity (IC50 = 46 µg/mL), inhibition of protein denaturation (81.9%), and stabilization of erythrocyte membranes (78.3%) at 500 µg/mL concentration. Statistical evaluation confirmed significant efficacy (p < 0.05). Mechanistic interpretation suggests modulation of NF-κB signaling pathway, inhibition of pro-inflammatory cytokines, and reduction of oxidative stress. These findings support further pharmacological and molecular investigations toward development of plant-based disease-modifying anti-rheumatic agents.
KEYWORDS : Rheumatoid arthritis, NF-κB inhibition, Cytokines, Oxidative stress, Phytochemicals, Anti-inflammatory activity.