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Κυριακή 10 Ιανουαρίου 2021

FGF21 Enhances Therapeutic Efficacy and Reduces Side Effects of Dexamethasone in Treatment of Rheumatoid Arthritis

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Abstract

In order to investigate efficacy of FGF21 combine dexamethasone (Dex) on rheumatoid arthritis (RA) meanwhile reduce side effects of dexamethasone. We used combination therapy (Dex 15 mg/kg + FGF21 0.25 mg/kg, Dex 15 mg/kg + FGF21 0.5 mg/kg or Dex 15 mg/kg + FGF21 1 mg/kg) and monotherapy (Dex 15 mg/kg or FGF21 1 mg/kg) to treat CIA mice induced by chicken type II collagen, respectively. The effects of treatment were determined by arthritis severity score, histological damage, and cytokine production. The levels of oxidative stress parameters, liver functions, and other blood biochemical indexes were detected to determine FGF21鈥檚 efficiency to side effects of dexamethasone. Oil red O was performed to detect the effects of FGF21 and dexamethasone on fat accumulation in HepG2 cells. The mechanism of FGF21 improves the side effects of dexamethasone which was analyzed by Western blotting. This combination proved to be therapeutically more effective than dexameth asone or FGF21 used singly. FGF21 regulates oxidative stress and lipid metabolism by upregulating dexamethasone-inhibited SIRT-1 and then activating downstream Nrf-2/HO-1and PGC-1. FGF21 and dexamethasone are highly effective in the treatment of arthritis; meanwhile, FGF21 may overcome the limited therapeutic response and Cushing鈥檚 syndrome associated with dexamethasone.

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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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