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Abstract
BackgroundRUNX Family Transcription Factor 2 (Runx2) promotes neurite outgrowth after sciatic nerve injury, and Curcumin can promote the expression of Runx2. It is worthwhile to explore whether curcumin’s repair effect on sciatic nerve injury is related to Runx2. ObjectiveTo investigate the repair effect of curcumin on sciatic nerve injury and its possible mechanism. ResultsCurcumin improved the sciatic functional index (SFI) and toe spread index (TSI) of rats with sciatic nerve injury and increased the number and diameter of myelinated axons in the sciatic nerve. Curcumin promoted the myelination of SCs (Schwann cells) by increasing the expression of peripheral myelin protein 22 (PMP22), fibrin, S100, and proliferating cell nuclear antige (PCNA). Curcumin treatment increased the proliferation of SCs and the expression of Runx2. Cell experiments further confirmed that curcumin promoted Schwann cell proliferation and myelination through Runx2. ConclusionCurcumin promotes SCs proliferation and myelination through Runx2 and improves sciatic nerve repair.
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