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Role of toll-like receptor 4 in the inflammation reaction surrounding silicone prosthesis.

机译:Toll样受体4在硅树脂假体周围的炎症反应中的作用。

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The inflammation which occurs around the silicone prosthesis is a complex process that can provoke the failure of the device and compromise the health of the implanted patient. Toll-like receptors (TLRs), which are transmembrane proteins, are now known to act in the innate immune response and in endogenous inflammation. The aim of our study was to assess the role of TLR4 in the foreign body reaction to a silicone shell prosthesis. Disks of shell silicone prosthesis were implanted in the subcutaneous tissue of C57BL6-TLR4-/- and C57BL6-WT mice. At day 14, inflammatory cell infiltrate and vessel sections around the prosthesis were less numerous in TLR4-/- than in WT mice. A histomorphometric analysis showed that the capsule around the implant was 1.96-fold less thick in depleted TLR4 than in wild-type mice. In addition, vascular endothelial growth factor and transforming growth factor 1 were underexpressed in the surrounding tissue of the prosthesis in TLR4-/- mice. Our study suggests, from this foreign body response model against silicone in mice, that TLR4 plays a key role in the reaction process around silicone implants.
机译:硅树脂假体周围发生的炎症是一个复杂的过程,会引起设备故障并损害植入患者的健康。 Toll样受体(TLR)是跨膜蛋白,目前已知在先天免疫应答和内源性炎症中起作用。我们研究的目的是评估TLR4在异物对硅胶壳假体反应中的作用。将壳状有机硅假体盘植入C57BL6-TLR4-/-和C57BL6-WT小鼠的皮下组织中。在第14天,在TLR4-/-中,假体周围的炎性细胞浸润和血管切片少于WT小鼠。组织形态计量学分析显示,在耗尽的TLR4中,植入物周围的胶囊厚度比野生型小鼠低1.96倍。另外,在TLR4-/-小鼠的假体周围组织中,血管内皮生长因子和转化生长因子1表达不足。我们的研究表明,从这种针对小鼠的有机硅异物反应模型来看,TLR4在有机硅植入物周围的反应过程中起着关键作用。

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