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- W2002134430 abstract "Assurance of the quality of cultured skin substitutes (CSSs) currently relies on representative histology and determination of surface hydration, which provide limited sampling at selected points. To evaluate uniformity of cell density on the collagen matrices before clinical use, a field assessment of cell viability is advantageous. This study aimed to develop a field measure of cell viability in CSSs in vitro using fluorescein diacetate (FdA). CSSs were stained 3 days after keratinocyte inoculation using 0.04 mg/mL FdA followed by exposure to 366 nm of ultraviolet light. CSS fluorescence quantified using Metamorph image analysis was correlated with inoculation density, 3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide (MTT) values and histology of corresponding biopsies. CSS fluorescence correlated significantly with inoculation density (p < 0.001) and MTT values (p < 0.001) of biopsies collected immediately after FdA staining. Fluorescence at day 3 also predicted day 10 MTT values. No toxicity was detected in CSSs, and normal in vitro and in vivo histology was demonstrated after FdA exposure. In conclusion, measurement of intracellular fluorescence with FdA allows for the early, comprehensive measurement of cellular distributions and viability in engineered skin and may therefore facilitate quality assurance." @default.
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- W2002134430 date "2008-03-01" @default.
- W2002134430 modified "2023-09-23" @default.
- W2002134430 title "Fluorescein Diacetate for Determination of Cell Viability in Tissue-Engineered Skin" @default.
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- W2002134430 doi "https://doi.org/10.1089/tec.2007.0228" @default.
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