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- W1601402564 abstract "To cite this article: Semlali A, Jacques E, Rouabhia M, Milot J, Laviolette M, Chakir J. Regulation of epithelial cell proliferation by bronchial fibroblasts obtained from mild asthmatic subjects. Allergy 2010; 65 : 1438–1445. Abstract Background: Bronchial epithelium is considered a key player in coordinating airway wall remodelling. The function of epithelial cells can be modulated by the underlying fibroblasts through autocrine and paracrine mechanisms. Objective: To investigate the effect of phenotypic changes in bronchial fibroblasts from asthmatic subjects on epithelial cell proliferation. Methods: Epithelial cells and fibroblasts derived from bronchial biopsies of asthmatic and healthy controls were cultured in an engineered model. Proliferation was evaluated by 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyl‐tetrazolium‐bromid (MTT). Epidermal growth factor receptor (EGFR), cyclin‐dependent kinase inhibitors p21 and p27 were measured by western blots. Total and active forms of transforming growth factor (TGF)‐β 1 were measured using ELISA and bioassay. TGF‐β was inhibited using a recombinant TGF‐β soluble receptor II protein. Results: Proliferation of epithelial cells from asthmatics (AE) is increased when cells were cultured with fibroblasts from normal controls (NF). Fibroblasts from asthmatics (AF) significantly decreased the proliferation of epithelial cells from healthy subjects (NE). Activation of p21, p27, EGFR and TGF‐β 1 reflects the proliferation data by decreasing in AE cultured with NF and increasing in NE cultured with AF. Neutralization of TGF‐β increased proliferation of epithelial cells cultured in the asthmatic model. Conclusion: Fibroblasts from asthmatic subjects regulate epithelial cell prolifearation, and TGF‐β signalling may represent one of the pathway involved in these interactions." @default.
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- W1601402564 date "2010-04-27" @default.
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- W1601402564 title "Regulation of epithelial cell proliferation by bronchial fibroblasts obtained from mild asthmatic subjects" @default.
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- W1601402564 doi "https://doi.org/10.1111/j.1398-9995.2010.02376.x" @default.
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