中华医学杂志
中華醫學雜誌
중화의학잡지
National Medical Journal of China
2014年
19期
1503-1506
,共4页
郑月焕%邹孝军%陈哲%周泽著%施莺莺%王晓宁%曹鹏
鄭月煥%鄒孝軍%陳哲%週澤著%施鶯鶯%王曉寧%曹鵬
정월환%추효군%진철%주택저%시앵앵%왕효저%조붕
脊髓损伤%脊髓压迫症%诱发电位,躯体感觉%4-氨基吡啶-3-甲醇
脊髓損傷%脊髓壓迫癥%誘髮電位,軀體感覺%4-氨基吡啶-3-甲醇
척수손상%척수압박증%유발전위,구체감각%4-안기필정-3-갑순
Spinal cord injuries%Spinal cord compression%Evoked potentials,somatosensory%4-AP-3-MeOH
目的 探讨于大鼠脊髓急性压迫损伤急性期局部应用4-氨基吡啶-3-甲醇(4-AP-3-MeOH)后脊髓神经传导功能改善情况.方法 12只成年雄性SD大鼠随机分为两组:实验组6只、对照组6只,分别于脊髓T11节段压迫损伤后30 min局部应用1 ml 4-AP-3-MeOH(100 μmol/ml)或1ml生理盐水.测定两组压迫损伤前、压迫损伤后30 min、用药干预后体表感觉诱发电位(SSEP)波幅值,并处死动物行脊髓组织LFB染色观察.结果 实验组及对照组压迫损伤前、压迫损伤后30 min及用药干预后SSEP值分别为(1.26 ±0.35)、(0.03 ±0.05)、(0.45 ±0.19) μv,(1.05 ±0.39)、(0.01±0.02)、(0.02±0.02) μv.用药干预后SSEP与压迫损伤后30 min SSEP相比,实验组差异有统计学意义(P<0.01),对照组差异无统计学意义(P>0.05).脊髓急性压迫损伤后30 min,脊髓大体照可见损伤部位肿胀,出血,劳克坚牢蓝(LFB)染色可见灰质、白质出血水肿,中央管破坏,白质结构破坏、不同程度脱髓鞘病变.结论 脊髓急性压迫损伤后30 min即存在灰白质结构出血、白质脱髓鞘等病理变化,于脊髓损伤局部应用新型钾离子通道阻滞剂4-AP-3-MeOH可显著改善脊髓压迫损伤大鼠SSEP传导,促进损伤脊髓的神经传导功能恢复.
目的 探討于大鼠脊髓急性壓迫損傷急性期跼部應用4-氨基吡啶-3-甲醇(4-AP-3-MeOH)後脊髓神經傳導功能改善情況.方法 12隻成年雄性SD大鼠隨機分為兩組:實驗組6隻、對照組6隻,分彆于脊髓T11節段壓迫損傷後30 min跼部應用1 ml 4-AP-3-MeOH(100 μmol/ml)或1ml生理鹽水.測定兩組壓迫損傷前、壓迫損傷後30 min、用藥榦預後體錶感覺誘髮電位(SSEP)波幅值,併處死動物行脊髓組織LFB染色觀察.結果 實驗組及對照組壓迫損傷前、壓迫損傷後30 min及用藥榦預後SSEP值分彆為(1.26 ±0.35)、(0.03 ±0.05)、(0.45 ±0.19) μv,(1.05 ±0.39)、(0.01±0.02)、(0.02±0.02) μv.用藥榦預後SSEP與壓迫損傷後30 min SSEP相比,實驗組差異有統計學意義(P<0.01),對照組差異無統計學意義(P>0.05).脊髓急性壓迫損傷後30 min,脊髓大體照可見損傷部位腫脹,齣血,勞剋堅牢藍(LFB)染色可見灰質、白質齣血水腫,中央管破壞,白質結構破壞、不同程度脫髓鞘病變.結論 脊髓急性壓迫損傷後30 min即存在灰白質結構齣血、白質脫髓鞘等病理變化,于脊髓損傷跼部應用新型鉀離子通道阻滯劑4-AP-3-MeOH可顯著改善脊髓壓迫損傷大鼠SSEP傳導,促進損傷脊髓的神經傳導功能恢複.
목적 탐토우대서척수급성압박손상급성기국부응용4-안기필정-3-갑순(4-AP-3-MeOH)후척수신경전도공능개선정황.방법 12지성년웅성SD대서수궤분위량조:실험조6지、대조조6지,분별우척수T11절단압박손상후30 min국부응용1 ml 4-AP-3-MeOH(100 μmol/ml)혹1ml생리염수.측정량조압박손상전、압박손상후30 min、용약간예후체표감각유발전위(SSEP)파폭치,병처사동물행척수조직LFB염색관찰.결과 실험조급대조조압박손상전、압박손상후30 min급용약간예후SSEP치분별위(1.26 ±0.35)、(0.03 ±0.05)、(0.45 ±0.19) μv,(1.05 ±0.39)、(0.01±0.02)、(0.02±0.02) μv.용약간예후SSEP여압박손상후30 min SSEP상비,실험조차이유통계학의의(P<0.01),대조조차이무통계학의의(P>0.05).척수급성압박손상후30 min,척수대체조가견손상부위종창,출혈,로극견뢰람(LFB)염색가견회질、백질출혈수종,중앙관파배,백질결구파배、불동정도탈수초병변.결론 척수급성압박손상후30 min즉존재회백질결구출혈、백질탈수초등병리변화,우척수손상국부응용신형갑리자통도조체제4-AP-3-MeOH가현저개선척수압박손상대서SSEP전도,촉진손상척수적신경전도공능회복.
Objective To evaluate the effects of 4-aminopyridine-3-methyl hydroxide (4-AP-3-MeOH) in rat's acute spinal cord injury.Methods A total of 12 adult male SD rats (250-300 g) were randomly divided into treatment (n =6) and control (n =6) groups.After compressing segment T11 of spinal cord for 30 min,the injured segment received 1 ml 4-AP-3-MeOH (100 μmol/ml) by topically application in treatment group while the control group received 1 ml saline.Somatosensory evoked potential (SSEP) was detected in both groups at pre-injury,30 min post-injury and post-dosing.Then Luxol fast blue (LFB) staining of target spinal segment was performed.Results In treatment group,the values of SSEP at pre-injury,30 min post-injury and post-dosing were 1.26 ± 0.35,0.03 ± 0.05 and 0.45 ± 0.19 μv respectively.Comparing SSEP of 30 min post-injury with post-dosing,the difference was statistically significant (P <0.01).While in control group,the values of SSEP at pre-injury,30 min post-injury and post-dosing were 1.05 ± 0.39,0.01 ± 0.02 and 0.02 ± 0.02 μv respectively.Comparing SSEP of 30 min post-injury with post-dosing,there was no statistical difference (P > 0.05).After 30 min injury,there were swelling and bleeding of spinal cord.LFB staining showed that both gray and white matter had swelling and bleeding and central canal was destroyed with varying degrees of demyelination.Conclusion After 30 min of acute spinal cord injury,there are bleeding of gray and white matter with varying degrees of demyelination.Topical usage of K + blocker 4-AP-3-MeOH can effectively improve the conduction of SSEP after acute spinal cord injury in rats.