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- W2912194061 abstract "Background Sustained, low- and mid-level (3–6%), radial stretching combined with varying concentrations of sodium pyruvate (NaPy) supplement increase the migration rate during microscale gap closure following an in vitro injury; NaPy is a physiological supplement often used in cell-culture media. Recently we showed that low-level tensile strains accelerate in vitro kinematics during en masse cell migration; topically applied mechanical deformations also accelerate in vivo healing in larger wounds. The constituents and nutrients at injury sites change. Thus, we combine a supplement with stretching conditions to effectively accelerate wound healing. Methods Monolayers of murine fibroblasts (NIH3T3) or myoblasts (C2C12) were cultured in 1 mM NaPy on stretchable, linear-elastic substrates. Monolayers were subjected to 0, 3, or 6% stretching using a custom three-dimensionally printed stretching apparatus, micro-damage was immediately induced, media was replaced with fresh media containing 0, 1, or 5 mM NaPy, and cell migration kinematics during gap-closure were quantitatively evaluated. Findings In myoblasts, the smallest evaluated strain (3%, minimal risk of damage) combined with preinjury (1 mM) and post-injury exogenous NaPy supplements accelerated gap closure in a statistically significant manner; response was NaPy concentration dependent. In both fibroblasts and myoblasts, when cells were pre-exposed to NaPy, yet no supplement was provided post-injury, mid-level stretches (6%) compensated for post-injury deficiency in exogenous NaPy and accelerated gap-closure in a statistically significant manner. Interpretation Small deformations combined with NaPy supplement prior-to and following cell-damage accelerate en masse cell migration and can be applied in wound healing, e.g. to preventatively accelerate closure of microscale gaps." @default.
- W2912194061 created "2019-02-21" @default.
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- W2912194061 date "2019-02-01" @default.
- W2912194061 modified "2023-10-18" @default.
- W2912194061 title "Non-damaging stretching combined with sodium pyruvate supplement accelerate migration of fibroblasts and myoblasts during gap closure" @default.
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- W2912194061 doi "https://doi.org/10.1016/j.clinbiomech.2019.01.009" @default.
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