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  • Title: Allylpyrocatechol attenuates methotrexate-induced hepatotoxicity in a collagen-induced model of arthritis.
    Author: De S, Kundu S, Chatterjee U, Chattopadhyay S, Chatterjee M.
    Journal: Free Radic Res; 2018 Jun; 52(6):698-711. PubMed ID: 29661087.
    Abstract:
    The cornerstone of treatment for rheumatoid arthritis is low dose methotrexate (MTX), but its use is limited by concerns regarding its potential for hepatotoxicity. Allylpyrocatechol (APC), a phytoconstituent sourced from leaves of Piper betle demonstrated antioxidant, anti-inflammatory, and antiarthritic properties. The present study aimed to evaluate the combined effect of APC and MTX on limiting progression of lipopolysaccharide accelerated collagen-induced arthritis, along with reduction of MTX-induced hepatic damage. A collagen-induced arthritis (CIA) model was established by immunising Sprague-Dawley rats with bovine collagen type II (CII) and lipopolysaccharide, followed by a booster dose of CII on day 15. Rats from days 11-27 were administered APC (20 mg/kg), methotrexate (1.5 mg/kg), or a combination of MTX and APC. The combinatorial therapy of APC and MTX significantly improved the parameters of arthritis as evident from the reduction in paw oedema and arthritic score and was endorsed by radiological and histopathological changes. This combination prevented the rise in levels of proinflammatory cytokines, tumour necrosis factor (TNF-α), and interleukin 6 (IL-6). Furthermore, unlike MTX-monotherapy, the APC-MTX combination decreased the associated cachexia, splenomegaly, and oxidative stress. Importantly, the hepatic damage mediated by MTX monotherapy was effectively attenuated by the inclusion of APC. Taken together, antioxidants such as APC when combined with MTX not only potentiated the antiarthritic effect but importantly alleviated the MTX-induced hepatic damage, thus endorsing its effectiveness in preventing progression of articular diseases such as rheumatoid arthritis.
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