中国医学创新
中國醫學創新
중국의학창신
MEDICAL INNOVATION OF CHINA
2014年
22期
24-30
,共7页
刘燕青%赵启军%何羽强%张义君%贺东煌%渠海波%王建国%陈大伟%赵悯%张朝
劉燕青%趙啟軍%何羽彊%張義君%賀東煌%渠海波%王建國%陳大偉%趙憫%張朝
류연청%조계군%하우강%장의군%하동황%거해파%왕건국%진대위%조민%장조
嗅鞘细胞%神经干细胞%急性脊髓损伤%神经营养素-3
嗅鞘細胞%神經榦細胞%急性脊髓損傷%神經營養素-3
후초세포%신경간세포%급성척수손상%신경영양소-3
Olfactory ensheathing cells%Neural stem cells%Acute spinal cord injury%Neurotrophic-3
目的:观察嗅鞘细胞(OECs)联合神经干细胞(NSCs)对大鼠急性脊髓损伤及神经营养素-3(NT-3)表达的影响。方法:SD大鼠80只,Allen’s法行急性脊髓损伤造模后,将大鼠按随机数字表法分为对照组(假手术组)、实验1组(NSCs移植组)、实验2组(OECs移植组)和实验3组(NSCs+OECs联合移植组)。局部注射法进行细胞移植。于术前和术后1、3、5、7、14、21、28 d,采用BBB评分法、改良的Tralov评分法和斜板实验,对大鼠后肢运动功能状况进行评分,进行运动诱发电位(MEP N1波)潜伏期的检测。最后,各组随机抽取一只大鼠进行灌注、取材与固定,免疫组织化学染色的方法观察各组NT-3在局部受损脊髓组织中的表达情况。结果:(1)造模及细胞移植术后,24 h时内各组大鼠BBB评分及改良的Tralov评分均为0分;斜板实验角度下降非常明显,由实验前(82.00±3.45)°降为(12.73±1.34)°,差异有统计学意义(P<0.05);各组MEP(N1波)潜伏期明显延长。(2)随着实验的进行,各组均表现出不同程度的恢复情况:各实验组BBB评分及改良的Tralov评分与对照组比较增高显著(P<0.05);1周后各组各时间点比较差异均有统计学意义(P<0.05),且各实验组两两比较差异均有统计学意义(P<0.05)。(3)斜板实验角度也逐渐增加,1周后,实验组增幅大于对照组(P<0.05);1周后各组各时间点比较差异均有统计学意义(P<0.05),且各实验组两两比较差异有统计学意义(P<0.05)。(4)各组MEP(N1波)潜伏期均逐渐缩短,3 d后,各实验组潜伏期缩短幅度均大于对照组(P<0.05);3 d后各组各时间点比较差异均有统计学意义(P<0.05),且各实验组两两比较差异有统计学意义(P<0.05)。(5)各组大鼠受损脊髓组织中NT-3均有明显增高,7 d内维持在较高的水平,此后逐渐减少。其中从第5天开始,各实验组与对照组比较差异有统计学意义(P<0.05);各组各时间点比较差异均有统计学意义(P<0.05),且各实验组两两比较差异有统计学意义(P<0.05)。结论:(1)细胞移植治疗大鼠急性脊髓损伤时,单种细胞单独移植,OECs的治疗修复效果要强于NSCs的治疗修复效果,OECs与NSCs联合移植取得的治疗修复效果最好。(2)NT-3在OECs与NSCs细胞联合移植组中表达最高。
目的:觀察嗅鞘細胞(OECs)聯閤神經榦細胞(NSCs)對大鼠急性脊髓損傷及神經營養素-3(NT-3)錶達的影響。方法:SD大鼠80隻,Allen’s法行急性脊髓損傷造模後,將大鼠按隨機數字錶法分為對照組(假手術組)、實驗1組(NSCs移植組)、實驗2組(OECs移植組)和實驗3組(NSCs+OECs聯閤移植組)。跼部註射法進行細胞移植。于術前和術後1、3、5、7、14、21、28 d,採用BBB評分法、改良的Tralov評分法和斜闆實驗,對大鼠後肢運動功能狀況進行評分,進行運動誘髮電位(MEP N1波)潛伏期的檢測。最後,各組隨機抽取一隻大鼠進行灌註、取材與固定,免疫組織化學染色的方法觀察各組NT-3在跼部受損脊髓組織中的錶達情況。結果:(1)造模及細胞移植術後,24 h時內各組大鼠BBB評分及改良的Tralov評分均為0分;斜闆實驗角度下降非常明顯,由實驗前(82.00±3.45)°降為(12.73±1.34)°,差異有統計學意義(P<0.05);各組MEP(N1波)潛伏期明顯延長。(2)隨著實驗的進行,各組均錶現齣不同程度的恢複情況:各實驗組BBB評分及改良的Tralov評分與對照組比較增高顯著(P<0.05);1週後各組各時間點比較差異均有統計學意義(P<0.05),且各實驗組兩兩比較差異均有統計學意義(P<0.05)。(3)斜闆實驗角度也逐漸增加,1週後,實驗組增幅大于對照組(P<0.05);1週後各組各時間點比較差異均有統計學意義(P<0.05),且各實驗組兩兩比較差異有統計學意義(P<0.05)。(4)各組MEP(N1波)潛伏期均逐漸縮短,3 d後,各實驗組潛伏期縮短幅度均大于對照組(P<0.05);3 d後各組各時間點比較差異均有統計學意義(P<0.05),且各實驗組兩兩比較差異有統計學意義(P<0.05)。(5)各組大鼠受損脊髓組織中NT-3均有明顯增高,7 d內維持在較高的水平,此後逐漸減少。其中從第5天開始,各實驗組與對照組比較差異有統計學意義(P<0.05);各組各時間點比較差異均有統計學意義(P<0.05),且各實驗組兩兩比較差異有統計學意義(P<0.05)。結論:(1)細胞移植治療大鼠急性脊髓損傷時,單種細胞單獨移植,OECs的治療脩複效果要彊于NSCs的治療脩複效果,OECs與NSCs聯閤移植取得的治療脩複效果最好。(2)NT-3在OECs與NSCs細胞聯閤移植組中錶達最高。
목적:관찰후초세포(OECs)연합신경간세포(NSCs)대대서급성척수손상급신경영양소-3(NT-3)표체적영향。방법:SD대서80지,Allen’s법행급성척수손상조모후,장대서안수궤수자표법분위대조조(가수술조)、실험1조(NSCs이식조)、실험2조(OECs이식조)화실험3조(NSCs+OECs연합이식조)。국부주사법진행세포이식。우술전화술후1、3、5、7、14、21、28 d,채용BBB평분법、개량적Tralov평분법화사판실험,대대서후지운동공능상황진행평분,진행운동유발전위(MEP N1파)잠복기적검측。최후,각조수궤추취일지대서진행관주、취재여고정,면역조직화학염색적방법관찰각조NT-3재국부수손척수조직중적표체정황。결과:(1)조모급세포이식술후,24 h시내각조대서BBB평분급개량적Tralov평분균위0분;사판실험각도하강비상명현,유실험전(82.00±3.45)°강위(12.73±1.34)°,차이유통계학의의(P<0.05);각조MEP(N1파)잠복기명현연장。(2)수착실험적진행,각조균표현출불동정도적회복정황:각실험조BBB평분급개량적Tralov평분여대조조비교증고현저(P<0.05);1주후각조각시간점비교차이균유통계학의의(P<0.05),차각실험조량량비교차이균유통계학의의(P<0.05)。(3)사판실험각도야축점증가,1주후,실험조증폭대우대조조(P<0.05);1주후각조각시간점비교차이균유통계학의의(P<0.05),차각실험조량량비교차이유통계학의의(P<0.05)。(4)각조MEP(N1파)잠복기균축점축단,3 d후,각실험조잠복기축단폭도균대우대조조(P<0.05);3 d후각조각시간점비교차이균유통계학의의(P<0.05),차각실험조량량비교차이유통계학의의(P<0.05)。(5)각조대서수손척수조직중NT-3균유명현증고,7 d내유지재교고적수평,차후축점감소。기중종제5천개시,각실험조여대조조비교차이유통계학의의(P<0.05);각조각시간점비교차이균유통계학의의(P<0.05),차각실험조량량비교차이유통계학의의(P<0.05)。결론:(1)세포이식치료대서급성척수손상시,단충세포단독이식,OECs적치료수복효과요강우NSCs적치료수복효과,OECs여NSCs연합이식취득적치료수복효과최호。(2)NT-3재OECs여NSCs세포연합이식조중표체최고。
To observe the impact of olfactory ensheathing cells combined neural stem cells in rats with acute spinal cord injury and neurotrophin-3 Expression.Method:80 SD rats were selected,after acute spinal cord injury modeling by Allen's method,the rats were randomly divided into the control group(sham group),the experimental 1 group(NSCs transplantation group),the experimental 2 group(OECs transplantation group)and the experimental 3 group(NSCs+OECs transplantation group). Cells were used local injection method to transplant. In the preoperative and postoperative 1,3,5,7,14,21,28 days,adopt BBB score,improved Tralov score and inclined plane experiments were used to rate the status of rat’s hindlimb motor function,tested motor evoked potential(MEP N1 wave)preclinical. Finally,one rat in each group were selected,randomly,then perfused,drawn and fixed. Immunohistochemical staining were used to observe neurotrophin-3(NT-3)in the damaged spinal cord tissue localized expression in each group. Result:(1)After modeling and cell transplanting,the rats’BBB rating and improved Tralov score was 0 points within 24 hours,inclined plane experiments’angle decreased very significantly,from the previous experiment(82.00±3.45)° reduced to(12.73±1.34)°(P<0.05).Each group’s MEP(N1 wave)latency was prolonged.(2)As the experiment progresses,the groups had shown varying degrees of recovery. Compared with the control group,the BBB score and improved Tralov score of the experimental group were increased significantly(P<0.05);after 1 week,the differences of each group in each time point were statistically significant(P<0.05),and the differences in each two of the experimental group were statistically significant(P<0.05).(3)Oblique plate experiment angle also gradually increased,after 1 week,the experimental group was increased than the control group(P<0.05);after 1 week,the differences of each group in each time point were statistically significant(P<0.05),and the differences in each two of the experimental group were statistically significant(P<0.05).(4)MEP(N1 wave)of each groups were gradually shortened in the incubation period;after 3 d,the incubation period shorten amplitude of the experimental group were greater than the control group(P<0.05);after 3 d,the differences of each group in each time point were statistically significant(P<0.05),and the differences in each two of the experimental group were statistically significant(P<0.05).(5)The NT-3 of damaged spinal cord tissue rats in each groups were significantly higher,7 d maintain at a high level,then gradually reduced. Since 5 days, the difference of the experimental group and the control group was statistically significant(P<0.05);the differences of each group in each time point were statistically significant(P<0.05),and the differences in each two of the experimental group were statistically significant(P<0.05).Conclusion:(1)When a single cell specie transplant to treat acute spinal cord injury alone,OECs transplantation has better restoration treatment effect than NSCs transplantation. OECs and NSCs transplantation group achieve the best results.(2)NT-3 expresses highest in the OECs and NSCs cell transplantation group.