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- W4224979639 abstract "Abstract Dioscin is a natural product that possesses protective effects on multiple chronic injuries, but its effects on asthma are not fully understood. Herein, we evaluated its effects on asthmatic mice established by ovalbumin (OVA) sensitization and challenges and further explored the mechanism. Inflammatory cells in bronchoalveolar lavage fluids (BALFs) were analyzed using Diff‐Quik staining. OVA‐specific immunoglobulin E (IgE)/IgG1 in serum and inflammatory cytokines (interleukin 4[IL‐4], IL‐5, IL‐13, and tumor necrosis factor‐α) in BALFs and lung tissues were measured using Enzyme‐Linked Immunosorbent Assay Kits. Hematoxylin and eosin, periodic acid–Schiff, and immunohistochemistry staining showed histopathological changes in lung tissues. Epithelial–mesenchymal transition (EMT) in human bronchial epithelial (16HBE) cells was assessed by immunofluorescence staining. Hydroxyproline content was used to evaluate collagen deposition. Polymerase chain reaction and Western blot were performed to measure messenger RNA and protein expression. We found that dioscin treatment (particularly at the dose of 80 mg/kg) significantly inhibited pulmonary inflammation in asthmatic mice, as evidenced by the decreased serum OVA‐specific IgE/IgG1 and the reduced inflammatory cells and cytokines in BALFs and lung tissues. Moreover, dioscin effectively ameliorated the goblet cell hyperplasia, mucus hypersecretion, collagen deposition, and smooth muscle hyperplasia in the airways of asthmatic mice. Mechanistically, dioscin restrained the activated TGF‐β1/Smad2/3 and protein kinase B (AKT) signal pathways in lung tissues and potently reversed the TGF‐β1‐induced EMT and phosphorylation of Smad2/3 and AKT in 16HBE cells. Collectively, dioscin displayed protective effects on OVA‐induced asthmatic mice via adjusting TGF‐β1/Smad2/3 and AKT signal pathways, supporting the fact that dioscin could be a candidate for chronic asthma prevention in the future." @default.
- W4224979639 created "2022-04-28" @default.
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- W4224979639 date "2022-04-28" @default.
- W4224979639 modified "2023-10-17" @default.
- W4224979639 title "Dioscin exhibits protective effects on in vivo and in vitro asthma models via suppressing TGF‐β1/Smad2/3 and AKT pathways" @default.
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- W4224979639 doi "https://doi.org/10.1002/jbt.23084" @default.
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