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Targeting of Nrf2/PPARγ/NLRP3 Signaling Pathway by Stevia rebudiana Bertoni Extract Provides a Novel Insight into Its Protective Effect against Acute Gouty Arthritis-Induced Synovial Inflammation, Oxidative Stress and Apoptosis in a Rat Model

Alaa M. Badawy, Medhat Taha, Sara T. Elazab, Ibrahim El-Shenbaby, Bandar A Alghamdi, Hendawy M, Abdullah G. Al-Kushi, Khaled Fathy, Tourki A. S. Baokbah, Mohie Mahmoud Ibrahim
2022 Processes  

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Our research work examined the potential protection of Stevia rebaudiana extract against monosodium urate crystals (MSU)-induced acute gouty arthritis in a rat model and its possible underlying mechanism. Forty rats were allocated into four groups (n = 10); a control group; an MSU group, whose rats received 0.1 of MSU single intra-articular injection in the ankle joint on the fifth day of the experiment; an MSU + Stevia group, which received 250 mg/kg/day of Stevia extract orally for seven days
more » ... and MSU crystals on the fifth day; and an MSU + colchicine group, which was administered colchicine at 0.28 mg/kg daily for seven days and MSU crystals on the fifth day. Pretreatment with Stevia extract mitigated MSU-induced inflammation as evidenced by a decrease of the ankle edema and inflammatory cell infiltration and a significant downregulation of the protein level of NFκB, TNFα, IL-1β, IL6, and IL18 as well as NLRP3 gene expression. Additionally, there was a markedly increased PPARγ gene expression (p < 0.001) compared with the MSU group (p < 0.001) and alleviated oxidative stress via significant upregulating of Nrf2/HO-1. Moreover, the pretreatment attenuated apoptosis by significantly decreasing cytochrome c, Bax, Caspase-3, and by increasing Bcl-2 protein. In conclusion, Stevia extract exhibited strong anti-inflammatory, antioxidant, and antiapoptotic effects against MSU-induced gouty arthritis similar to the standard anti-inflammatory colchicine drugs.
doi:10.3390/pr10091751 fatcat:graq4kv4crgrbj6lojo5xii64i
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Alaa M. Badawy, Medhat Taha, Sara T. Elazab, Ibrahim El-Shenbaby, Bandar A Alghamdi, Hendawy M, Abdullah G. Al-Kushi, Khaled Fathy, Tourki A. S. Baokbah, Mohie Mahmoud Ibrahim. "Targeting of Nrf2/PPARγ/NLRP3 Signaling Pathway by Stevia rebudiana Bertoni Extract Provides a Novel Insight into Its Protective Effect against Acute Gouty Arthritis-Induced Synovial Inflammation, Oxidative Stress and Apoptosis in a Rat Model." Processes 10.9 (2022) 1751