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• W2917421940 abstract "Abstract Following injury, skin activates a complex wound healing programme. While cellular and signalling mechanisms of wound repair have been extensively studied, the principles of epidermal‐dermal interactions and their effects on wound healing outcomes are only partially understood. To gain new insight into the effects of epidermal‐dermal interactions, we developed a multiscale, hybrid mathematical model of skin wound healing. The model takes into consideration interactions between epidermis and dermis across the basement membrane via diffusible signals, defined as activator and inhibitor. Simulations revealed that epidermal‐dermal interactions are critical for proper extracellular matrix deposition in the dermis, suggesting these signals may influence how wound scars form. Our model makes several theoretical predictions. First, basal levels of epidermal activator and inhibitor help to maintain dermis in a steady state, whereas their absence results in a raised, scar‐like dermal phenotype. Second, wound‐triggered increase in activator and inhibitor production by basal epidermal cells, coupled with fast re‐epithelialization kinetics, reduces dermal scar size. Third, high‐density fibrin clot leads to a raised, hypertrophic scar phenotype, whereas low‐density fibrin clot leads to a hypotrophic phenotype. Fourth, shallow wounds, compared to deep wounds, result in overall reduced scarring. Taken together, our model predicts the important role of signalling across dermal‐epidermal interface and the effect of fibrin clot density and wound geometry on scar formation. This hybrid modelling approach may be also applicable to other complex tissue systems, enabling the simulation of dynamic processes, otherwise computationally prohibitive with fully discrete models due to a large number of variables." @default.
• W2917421940 created "2019-03-02" @default.
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• W2917421940 date "2019-04-01" @default.
• W2917421940 modified "2023-10-13" @default.
• W2917421940 title "A multiscale hybrid mathematical model of epidermal‐dermal interactions during skin wound healing" @default.
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• W2917421940 doi "https://doi.org/10.1111/exd.13909" @default.
• W2917421940 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6561509" @default.
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