Authors: Wei Zhang Xiaochun Peng Tao Cheng Xianlong Zhang
Publish Date: 2011/04/08
Volume: 35, Issue: 12, Pages: 1883-1888
Abstract
Aseptic loosening is the most common complication of total joint replacement which most likely results from an inflammatory response to wear debris shed from the implant In this study we aimed to investigate whether the lentivirusmediated microRNA miRNA targeting vascular endothelial growth factor VEGF could inhibit wear debrisinduced inflammation in a murine modelTitanium alloy particles were introduced into established air pouches on BALB/c mice followed by implantation of calvarial bone from a syngeneic mouse After treatment by locally delivered lentivirusmediated VEGF miRNA inflammatory tissues were collected for histology and molecular analysisWe found that 1 locally delivered miRNA inhibited titanium alloy particleinduced tissue inflammation including the diminished pouch membrane thickness and reduced inflammatory cellular infiltration and that 2 locally delivered miRNA inhibited expressions of the inflammatory cytokines VEGF tumour necrosis factorα TNFα interleukin1β IL1β and receptor activator of nuclear factor kappa B ligand RANKL
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