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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Influence of Orthopedic Particulate Biomaterials on Inflammation and Synovial Microcirculation in the Murine Knee Joint
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Influence of Orthopedic Particulate Biomaterials on Inflammation and Synovial Microcirculation in the Murine Knee Joint

机译:骨科颗粒生物材料对小鼠膝关节炎症和滑膜微循环的影响

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The purpose of the present study was to examine changes in the synovial micro-circulation as well as synovial tissue responses to exposure to titanium, polymethylmethacrylate (PMMA), ceramic (Al_2O_3), cobalt-chromium alloy (Co-Cr), and polyethylene (PE) particles in an in vivo model. The particulate biomaterials were injected into the left knee joint of female Balb/c mice and assessment of the synovial microcirculation using intravital fluorescence microscopy as well as histological evaluation of the synovial tissue response were performed on day 1 after particle administration. Intravital microscopic measurements revealed that all tested biomaterials caused significantly (p < 0.05) enhanced leukocyte-endothelial cell interactions and an increase of functional capillary density compared to controls. In the histological examination PMMA, Al_2O_3, PE, and Co-Cr particles provoked significantly (p < 0.05) enhanced inflammatory tissue responses in comparison to tissue from control animals. Titanium particles showed significantly (p < 0.05) less leukocyte-endothelial cell interactions than the other particulate biomaterials and caused significantly (p < 0.05) minor membrane thickening compared to PE and PMMA particles. In conclusion, all tested particulate biomaterials were capable of inducing inflammatory responses in the present study. Our data suggest that titanium particles may cause less leukocyte activation and inflammatory tissue responses than other particulate biomaterials used in total joint arthro-plasty.
机译:本研究的目的是检查滑膜微循环的变化以及滑膜组织对钛,聚甲基丙烯酸甲酯(PMMA),陶瓷(Al_2O_3),钴铬合金(Co-Cr)和聚乙烯( PE)粒子在体内模型中。将颗粒状生物材料注射到雌性Balb / c小鼠的左膝关节中,并在给药后第1天使用活体荧光显微镜对滑膜微循环进行评估,并对滑膜组织反应进行组织学评估。活体显微镜下的测量显示,与对照相比,所有测试的生物材料均引起显着(p <0.05)的白细胞-内皮细胞相互作用增强,功能性毛细血管密度增加。在组织学检查中,与对照动物的组织相比,PMMA,Al_2O_3,PE和Co-Cr颗粒引起的炎症组织反应显着增强(p <0.05)。与PE和PMMA颗粒相比,钛颗粒显示出比其他颗粒生物材料明显少(p <0.05)白细胞-内皮细胞相互作用,并且引起明显的膜增厚(p <0.05)。总之,在本研究中,所有测试的颗粒生物材料均能够诱导炎症反应。我们的数据表明,与全关节置换术中使用的其他颗粒生物材料相比,钛颗粒可能导致更少的白细胞激活和炎症组织反应。

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