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- W2034226301 abstract "The respiratory epithelium is frequently injured by inhaled toxic agents or by micro-organisms. The epithelial wound repair represents a crucial process by which surface respiratory cells maintain the epithelial barrier integrity. The repair process involves both cell migration and proliferation, but as yet, the kinetic of these two mechanisms has not been extensively studied. Using an in vitro model of human respiratory epithelium wound repair, proliferative cell immunofluorescent staining and a computer-assisted technique allowing the tracking of living cells, we studied the cell proliferation and migration during the wound repair process. Respiratory epithelial cells were dissociated from human nasal polyps and cultured on a collagen I matrix. At confluency, a chemical wound was made on the culture. We observed that the cell mitotic activity peaked at 48h after wounding (23% of the cells) and mainly concerned the cells located 160 to 400 μm from the wound edge. The migration speed was highest (35 to 45 μm/h) for the spreading cells at the wound edge and progressively decreased for the cells more and more distant from the wound edge. The temporal analysis of the cell migration speed during the wound repair showed that it was almost constant during the first 3 days of the repair mechanism and thereafter dropped down until the wound closure was completed (after 4 days). We also observed that over a 1-hour period, the intra-individual and interindividual variation of the cell migration speed was 43% and 37%, respectively. These results demonstrate that cell proliferation and cell migration during respiratory epithelial wound repair are differently expressed with regard to the cell location within the repairing area. Cell Motil. Cytoskeleton 37:33–43, 1997. © 1997 Wiley-Liss, Inc." @default.
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- W2034226301 date "1997-01-01" @default.
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- W2034226301 title "Cell migration and proliferation during the in vitro wound repair of the respiratory epithelium" @default.
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- W2034226301 doi "https://doi.org/10.1002/(sici)1097-0169(1997)37:1<33::aid-cm4>3.0.co;2-i" @default.
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