欢迎来到天天文库
浏览记录
ID:18053536
大小:237.57 KB
页数:3页
时间:2018-09-13
《姿势对椎间盘退变影响的实验研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据..丝垣匿堂瞳堂撮垫!Q生筮三至鲞筮垒翅◆doi:10.3969/j.issn.1004-3101.2010.04.00124l●骨外科学◆姿势对椎间盘退变影响的实验研究刘亚‘,田云虎,王学文,刘文华(潍坊医学院附属医院骨科,山东潍坊261031)譬移嘞2猎鬻聱哗餐?鞴嚣啭‘嘟8霉辫帮孽舞辩’p心薯。
2、。。。。_。‘黼j∥。嗲??i嚣。弼一絮嬲黔躜霹辫”鬻嚣薯嬲豁+黟翳嘴磐麓穗§【摘要】目的通过建立压力可控型椎间盘退变模型,探讨不同的姿势对椎间盘退变的影响。方法80只成年大鼠随机分为A,B,c,D4组,分别模拟人类在站立(A组)、坐位直立(B组)、坐位前屈(C纽)3种状态下椎阍盘内的
3、压力情况,应用恒定加莲装置对第9,10尾椎加压,D组为时照组。A,B,c组每日加压4h,对照组仅在尾椎穿针,不加压;4组分别在7,14d后取标本进行组织学观察,应用免疫组化和阿利新蓝分析测量Ⅱ型胶原纤维和蛋白多糖含量,观察椎间盘退变情况。结果①A组、D组类似;椎间盘组织形态、基质胶原和蛋白聚糖(PG)含量和成分无明显变化;②C组椎间盘发生软骨细胞变性、坏死,髓核皱缩,纤维环胶麋纤维变性、排列紊乱。软骨终板钙化、断裂,胶原纤维排列紊乱等组织形态学改变。髓核和软骨终板中PG总量和Ⅱ型胶原表达下降≤P<0.054、对照组明显减少(P5、malmodelandfindthedifferentposture’effectonthediscdegeneration.MethodsEightymiceweredividedinto4groupsrandomlyandeachgroup7discswereunderthedifferentpressure(pro-ducebyapermanentpressurizingdeviceJsimulatingthedifferenthumanposture.Eachgroupwasunderthedifferentloadingsimulatehumanstanding(GroupA),s6、itting(GroupB)。andsittingflexion(GroupC)position.GroupDwasthecontrolgroupwithoutanypressuretothedisc.MiceoftheA,B,Cgroupswereunderthedifferentloadingfor4hoursaday.7andl4dayslater-themiceweresacrificedandhistologychan—ges。collagenIIandproteoglycan(PC)componentscontentwereobservedtofindthedegeneratio7、nsituationofthediscs.Results①MiceinGroupAandGroupDweresimilarandshowednomorphology。collagenIIandPGcontentchangesonintervertebraldisc.②IngroupC,thepathologicalchangesoftheintervertebraldiscincluding:Spitoftheannulusfibrosis,dehydrationofpulposusnucleus-derangementofthecol-lagenoftheannulusfibrosis,c8、alcification,ossificationandseparationofthecartilageendplate;PGcontentinthepulposusnucleusandthecartilageendplateandthecollagenIIdecreasedsignificantly(P<0.05).③IngroupB-nopathologicalchangeswereobservedbut
4、对照组明显减少(P
5、malmodelandfindthedifferentposture’effectonthediscdegeneration.MethodsEightymiceweredividedinto4groupsrandomlyandeachgroup7discswereunderthedifferentpressure(pro-ducebyapermanentpressurizingdeviceJsimulatingthedifferenthumanposture.Eachgroupwasunderthedifferentloadingsimulatehumanstanding(GroupA),s
6、itting(GroupB)。andsittingflexion(GroupC)position.GroupDwasthecontrolgroupwithoutanypressuretothedisc.MiceoftheA,B,Cgroupswereunderthedifferentloadingfor4hoursaday.7andl4dayslater-themiceweresacrificedandhistologychan—ges。collagenIIandproteoglycan(PC)componentscontentwereobservedtofindthedegeneratio
7、nsituationofthediscs.Results①MiceinGroupAandGroupDweresimilarandshowednomorphology。collagenIIandPGcontentchangesonintervertebraldisc.②IngroupC,thepathologicalchangesoftheintervertebraldiscincluding:Spitoftheannulusfibrosis,dehydrationofpulposusnucleus-derangementofthecol-lagenoftheannulusfibrosis,c
8、alcification,ossificationandseparationofthecartilageendplate;PGcontentinthepulposusnucleusandthecartilageendplateandthecollagenIIdecreasedsignificantly(P<0.05).③IngroupB-nopathologicalchangeswereobservedbut
此文档下载收益归作者所有