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1、中華創(chuàng)傷雜志2012年2月第28卷第2期ChinJTrauma,F(xiàn)ebruary2012,Vo1.28,No.2·165··基礎研究·電刺激對大鼠脊髓損傷后自體骨髓間充質(zhì)干細胞移植的影響趙華陳允震劉海春武文亮謝斌王洪亮焦廣俊【摘要】目的探討脈沖電刺激對大鼠脊髓損傷后自體骨髓間充質(zhì)干細胞(mesenchymalstemcells,MSCs)移植療效的影響。方法選用60只雄性SD大鼠。數(shù)控脊髓損傷打擊器制備脊髓損傷模型。脊髓損傷7d后,從大鼠自身股骨上采集并標記MSCs。以隨機數(shù)字表法分為四組:MS
2、Cs移植組(A組)、電刺激組(B組)、電刺激聯(lián)合MSCs移植組(C組)和PBS對照組(D組)。應用BBB評分法和體感誘發(fā)電位(SEP)在脊髓損傷前后定期進行功能評定;磁共振彌散張量成像(DTI)技術檢測脊髓的修復情況;免疫組化觀察Brdu標記的移植MSCs的存活情況。結果術后4周,BBB評分C組與其他三組比較差異有統(tǒng)計學意義(P<0.05),明顯高于D組(P<0.01),提示肢體功能恢復顯著。移植后第8周,SEP檢測C組潛伏期及波幅與其他各組比較差異有統(tǒng)計學意義(P<0.05),提示C組神經(jīng)功能
3、恢復較快,DTI成像在移植后第8周也有明顯修復。免疫組化顯示術后8周C組脊髓損傷部位有大量Brdu標記的MSCs細胞,其陽性細胞數(shù)量和比率明顯增加。結論電刺激療法能夠顯著提高脊髓損傷后移植MSCs的存活能力及其聯(lián)合治療效果?!娟P鍵詞】脊髓損傷;問充質(zhì)干細胞;移植;電刺激療法Efectsofspikewaveelectricstimulationonthetransplantationofautogenousmarrowmesenchy-malstemcellsinrats、)Irithspina
4、lcordinjuryZ0Hna,CHENYun-zhen,Hai—chun,n—liang,XIEBin,WANGHung—liang,JIAOGuang~un.DepartmentofOrthopedics,QiluHospitalofShandongUniversity,Jinan250012,ChinaCorrespondingauthor:CHENYun—zhen,TeZ:0086—531—82169431,Email:cyzl12@yahoo.com.ca【Abstract】0bje
5、ctiveToinvestigatewhethertheimplantedspikewaveelectricalstimulation(ES)canimprovesurvivalofmesenchymalstemcells(MSCs)aftertransplantationinspinalcordinjury(SCI)rats.MethodsInthestudy,60maleSDratswereusedtopreparetheSCIinducedbyadigit—alweightdropappa
6、ratus.TheMSCsfromeachrat’sfetourswerecollectedandthenlabeledbyBromode.oxyuridine(Brdu)sevendaysafterSCI.Theratswererandomlyassignedintofourgroups,ie,groupA(receivingatransplantationofMSCsonly),groupB(receivingelectro-stimulanttherapyonly),groupC(rece
7、ivingatransplationofMSCsandelectro—stimulanttherapy)andthecontrolgroup(receivingasingleinjectionofphosphatebuffersolution,PBS).FunctionalstatuswasassessedregularlybeforeandafterSCIbyusingtheBasso—Beattie—Bresnahan(BBB)locomotorratingscoreandsomatosen
8、soryevokedpoten—tial(SEP).Therecoveryofspinalcordwascheckedbydiffusiontensorimaging(DTI)andthesurvivor-shipofthelabeledMSCswasobservedwithimmunohistochemicalmethod.ResultsBBBscoreofgroupCdemonstratedsignificantdifferenceincomparisonwiththatoftheother