资源描述:
《opgranklrank系统参与牙槽骨吸收及重建过程作用的初探》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、OPG/RANKL/RANK系统参与牙槽骨吸收及重建过程作用的初探陈莉丽,黄玫,雷利红,吴燕岷(310009杭州,浙江大学医学院附属第二医院口腔内科)[摘要]目的初步探讨护骨素OPG、核因子κB受体活化因子配体RANKL、核因子κB活化因子RANK在牙周炎牙槽骨吸收及骨重建过程中的作用。方法对小鼠单核巨噬细胞白血病细胞株RAW264.7实验组进行体外诱导培养,对照组为完全培养基培养;小鼠成骨样细胞株MC3T3-E1实验组采用前期实验收集的骨吸收上清处理,对照组采用完全培养基培养;以免疫荧光等方法检测细胞OPG、RANKL、
2、RANK的表达。30只8周龄雄性SD大鼠建立实验性牙槽骨吸收模型,研究其吸收重建规律。以免疫组化S-P法检测OPG、RANKL、RANK的表达情况。结果实验组MC3T3-E细胞经骨吸收上清处理7天后,OPG蛋白平均荧光强度为29.636±5.652,对照组为15.568±1.229,表达显著上调(P<0.01);但实验组RANKL蛋白平均荧光强度:6.806±1.738,对照组为18.082±2.732表达被显著抑制(P<0.01),OPG/RANKL比值在上清处理后高于对照组(P<0.05)。采用商品化大肠杆菌内毒素E-
3、LPS注射法成功制备大鼠牙槽骨吸收模型。在牙槽骨吸收区域OPG水平较无骨吸收区域有所降低,RANKL的表达则相反。结论OPG、RANKL、RANK参与了大鼠实验性骨吸收活动;破骨细胞骨吸收上清可能通过改变OPG与RANKL的比值,从而影响骨重建中骨形成与骨吸收的动态平衡。[关键词]成骨细胞;破骨细胞;护骨素;核因子κB受体活化因子配体;核因子κB活化因子;牙周炎动物模型[中图法分类号]RoleofTheprimarystudyofOPG/RANKL/RANKsystemduringthealveolarboneresorp
4、tionandremodelingChenHENLili,,HuangUANGMei,,LeiEILihong,,WUuYanming((DepartmentofOralMedicine,,theSecondAffiliatedHospital,,SchoolofMedicine,,ZhejiangUniversity,,Hangzhou,ZhejiangProvince,310009,China)[Abstract]ObjectiveToinvestigateexplorethepotentialroleeffectof
5、asystemcontainingosteoprotegerin(OPG),receptoractivatorofNF-κBligand(RANKL),andreceptoractivatorofnuclearfactor-kappaB(RANK),alsoas,OPG/RANKL/RANKsystemintheresorptionandremodelingmechanismsofalveolarbone.MethodsMouseRAW264.7celllinewasinducedtoosteoclastsinvitro,
6、,andmouseMC3T3-E1celllinewastreatedwithboneresorptionsupernatant;.tThecontrolgroupcellswasculturedwithregularmedium;.tTheexpressionlevelsofOPG,,RANKL,andRANKexpressionlevelinthecellswasdetectedviabyimmunofluorescencemethodassay.Thirty8-weeks-oldmaleSDratswereusedt
7、oestablishthealveolarboneresorptionmodelwiththeinjectionofE-LPS.ImmunohistochemicalS-PmethodwasusedtoinvestigatetheexpressionofOPG,,RANKL,andRANKintheanimalmodel.ResultsTheexpressionofOPGinMC3T3-E1cellswasup-regulatedafter7days’treatmentwhentreatedwithboneresorpti
8、onsupernatantthanincontrolcellsafter7days((29.636±5.652,vs15.568±1.229,,P<0.01).,while,Inversely,theRANKLexpressionlevelwasdown-regulated(6.806±1.738,vs