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Anti-inflammatory and Anti-oxidant Properties of Curcuma longa (Turmeric) Versus Zingiber officinale (Ginger) Rhizomes in Rat Adjuvant-Induced Arthritis

Turmeric (rich in curcuminoids) and ginger (rich in gingerols and shogaols) rhizomes have been widely used as dietary spices and to treat different diseases in Ayurveda/Chinese medicine since antiquity. Here, we compared the anti-inflammatory/anti-oxidant activity of these two plants in rat adjuvant-induced arthritis (AIA). Both plants (at dose 200 mg/kg body weight) significantly suppressed (but with different degrees) the incidence and severity of arthritis by increasing/ decreasing the production of anti-inflammatory/pro-inflammatory cytokines, respectively, and activating the antioxidant defence system. The anti-arthritic activity of turmeric exceeded that of ginger and indomethacin (a non-steroidal anti-inflammatory drug), especially when the treatment started from the day of arthritis induction. The percentage of disease recovery was 4.6–8.3% and 10.2% more in turmeric compared with ginger and indomethacin (P<0.05), respectively. The present study proves the anti-inflammatory/anti-oxidant activity of turmeric over ginger and indomethacin, which
may have beneficial effects against rheumatoid arthritis onset/progression as shown in AIA rat model.

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