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Aqueous extract of Stevia rebaudiana (Bertoni) Bertoni abrogates death‐related signaling pathways via boosting the expression profile of oxidative defense systems

Indigenous inhabitants of South America and other areas have been using stevia as a traditional medicine for years, but its impact on cell signaling pathways has not been well studied yet. We evaluated the impacts of aqueous extract of Stevia rebaudiana (Bertoni) Bertoni on the expression of the sel...

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Published in:Journal of food biochemistry 2022-07, Vol.46 (7), p.e14151-n/a
Main Authors: Oudbor, Leila, Mokhtari, Zohreh, Dastghaib, Sanaz, Mokarram, Pooneh, Rajani, Huda Fatima, Barazesh, Mahdi, Salami, Siamak
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description Indigenous inhabitants of South America and other areas have been using stevia as a traditional medicine for years, but its impact on cell signaling pathways has not been well studied yet. We evaluated the impacts of aqueous extract of Stevia rebaudiana (Bertoni) Bertoni on the expression of the selected genes involved in significant cell death modalities, including p53‐DNA damage and the cellular antioxidative defense in pancreatic tissues in STZ‐induced diabetic rats and murine pancreatic cell lines. The in vivo study revealed that aqueous extract of Stevia significantly upregulated the expression of GSTM1 and P1 and GPX (4.67, 12.08, and 2.81 fold, respectively; all p 
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We evaluated the impacts of aqueous extract of Stevia rebaudiana (Bertoni) Bertoni on the expression of the selected genes involved in significant cell death modalities, including p53‐DNA damage and the cellular antioxidative defense in pancreatic tissues in STZ‐induced diabetic rats and murine pancreatic cell lines. The in vivo study revealed that aqueous extract of Stevia significantly upregulated the expression of GSTM1 and P1 and GPX (4.67, 12.08, and 2.81 fold, respectively; all p &lt; .05) along with significant downregulation of the genes which were upregulated by STZ, including apoptotic genes caspase‐3 and ‐9 (−9.80 and −4.16 fold, p &lt; .05, respectively) and necroptotic genes, RIP1K, 2 K, and 3 K (−9.48, −2.70, and −12.9 fold, respectively, all p &lt; .05). In vitro studies also revealed comparable results. In conclusion, the observed clinical improvements in diabetic rats are the result of overexpression of major genes of antioxidative defense systems in the course of a significant downregulation of major cell death modalities. Practical applications The popularity of noncaloric sweeteners, including stevia, has rocketed in recent years, but the consumption of stevia as traditional medicine has a long history. The findings of the current study provide strong mechanistic lines of evidence supporting the beneficial biological effects of stevia as a noncaloric sweetener in diabetes. 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We evaluated the impacts of aqueous extract of Stevia rebaudiana (Bertoni) Bertoni on the expression of the selected genes involved in significant cell death modalities, including p53‐DNA damage and the cellular antioxidative defense in pancreatic tissues in STZ‐induced diabetic rats and murine pancreatic cell lines. The in vivo study revealed that aqueous extract of Stevia significantly upregulated the expression of GSTM1 and P1 and GPX (4.67, 12.08, and 2.81 fold, respectively; all p &lt; .05) along with significant downregulation of the genes which were upregulated by STZ, including apoptotic genes caspase‐3 and ‐9 (−9.80 and −4.16 fold, p &lt; .05, respectively) and necroptotic genes, RIP1K, 2 K, and 3 K (−9.48, −2.70, and −12.9 fold, respectively, all p &lt; .05). In vitro studies also revealed comparable results. In conclusion, the observed clinical improvements in diabetic rats are the result of overexpression of major genes of antioxidative defense systems in the course of a significant downregulation of major cell death modalities. Practical applications The popularity of noncaloric sweeteners, including stevia, has rocketed in recent years, but the consumption of stevia as traditional medicine has a long history. The findings of the current study provide strong mechanistic lines of evidence supporting the beneficial biological effects of stevia as a noncaloric sweetener in diabetes. 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In conclusion, the observed clinical improvements in diabetic rats are the result of overexpression of major genes of antioxidative defense systems in the course of a significant downregulation of major cell death modalities. Practical applications The popularity of noncaloric sweeteners, including stevia, has rocketed in recent years, but the consumption of stevia as traditional medicine has a long history. The findings of the current study provide strong mechanistic lines of evidence supporting the beneficial biological effects of stevia as a noncaloric sweetener in diabetes. 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subjects antioxidant defense system
cell death modalities
CRI‐D2 cell line
diabetes mellitus type 1
Stevia rebaudiana
Wistar rat
title Aqueous extract of Stevia rebaudiana (Bertoni) Bertoni abrogates death‐related signaling pathways via boosting the expression profile of oxidative defense systems
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