IL-4与骨保护素联合抑制聚乙烯磨损颗粒诱导的溶骨效应

目的运用小鼠植骨气囊模型,研究白介素-4(IL-4)与骨保护素(OPG)联合减少骨破坏吸收防治人工关节松动的效应。方法在小鼠背部注入空气形成气囊,取同源小鼠的颅骨植入气囊内。将已制成的气囊模型小鼠分成3组:对照组(气囊注入聚乙烯颗粒及生理盐水);IL-4组(气囊内注入聚乙烯颗粒及IL-4);联合组(气囊内注入聚乙烯颗粒、IL-4及OPG),3周后取囊壁和植入颅骨组织进行HE染色检测炎症反应情况及炎症细胞渗出量;取组织匀浆液应用ELISA方法检测炎性细胞因子(IL-1、TNF)浓度;抗酒石酸酸性磷酸酶染色观察破骨细胞的分化成熟情况;应用扫描电镜检测骨片吸收情况。结果(1)HE染色检测炎症细胞渗出量IL-4组、联合组明显少于对照组(P<0.05)。(2)ELISA法检测炎性细胞因子(IL-1、TNF)浓度IL-4组与联合组均明显少于对照组(P<0.05)。(3)抗酒石酸酸性磷酸酶染色阳性区域与视野面积的百分比IL-4组与联合组明显少于对照组,且联合组较IL-4组染色面积也有显著减少(P<0.05)。(4)应用扫描电镜检测骨片吸收陷窝面积与视野面积的百分比IL-4组与联合组明显少于对照组;且联合组较IL-4组的骨片吸收面积有显著减少。讨论证实IL-4不仅能明显减轻炎症情况,并且能明显减少破骨细胞的激活、骨破坏吸收情况,抑制聚乙烯磨损颗粒所致的骨吸收效应。IL-4与OPG联合应用于小鼠植骨气囊模型中,其抑制骨吸收效应更加明显。

Interleukin-4 and osteoprotegerin suppress polyethylene wear debris-induced osteolysis in a murine air pouch model

Objective To test the effect of recombinant interleukin-4(IL-4) and recombinant osteoprotegerin(OPG) in suppressing bone resorption induced by polyethylene wear particles.Methods A cranial bone allograft was introduced into the air pouches induced on the back of BALB/c mice,followed by injection of 1 ml suspension of polyethylene particles into the pouches.The mouse models were then divided into 3 groups to receive injections of saline(control),IL-4 alone,or IL-4 and OPG into the pouches.The tissues were ha...