Objective To investigate the effects of combination therapy with methylprednisolone (MP) and brain-derived neurotrophic factor (BDNF) on axonal remyelination and functional recovery after spinal cord injury in rats. M...Objective To investigate the effects of combination therapy with methylprednisolone (MP) and brain-derived neurotrophic factor (BDNF) on axonal remyelination and functional recovery after spinal cord injury in rats. Methods Forty-five rats were randomly divided into three groups: Group A received MP and BDNF; group B received MP and cerebrospinal fluid (CSF); and group C received CSF only. Contusion injury to adult rat spinal cord was produced at the T10 vertebra level followed by immediate intravenous MP or CSF, and was thereafter infused intrathecally with BDNF or CSF for 6 weeks. Axonal remyelination and functional recovery was observed using RT-PCR, immunohistochemistry and open field locomotion. Results An increase of 28.4%±2.3% in the expression of proteolipid protein (PLP) gene, an endogenous indicator of axonal remyelination, was demonstrated in group A 24 hours after injury. Ten weeks later, there were significant decreases in hematogenous inflammatory cellular infiltration in groups A and B compared to C (P<0.05). Concomitantly, a significant amount of axonal remyelination was observed in group A compared to groups B and C (P<0.05). Furthermore, combination therapy using MP and BDNF in group A resulted in stimulation of hindlimb activity as well as improvement in the rate of functional recovery in open field locomotion (P<0.05). Conclusions Combined therapy of MP and BDNF can improve functional recovery through mechanisms that include attenuating inflammatory cellular infiltration and enhancing axonal remyelination at the injury site. Such a combination may be an effective approach for treatment of spinal cord injury.展开更多
目的研究病灶性新皮质癫癎发作间期MEG和MRI一致性与预后的关系。方法 23例病灶性新皮质癫癎接受了术前评估及手术治疗,所有患者术前均接受MEG检测,数据分析处理采用等价电流偶极子(ECD)法和合成孔径法(SAMg2)。7例患者接受了颅内电极...目的研究病灶性新皮质癫癎发作间期MEG和MRI一致性与预后的关系。方法 23例病灶性新皮质癫癎接受了术前评估及手术治疗,所有患者术前均接受MEG检测,数据分析处理采用等价电流偶极子(ECD)法和合成孔径法(SAMg2)。7例患者接受了颅内电极植入后长程视频皮层脑电图监测。术后随访一年以上并运用Engel法评价预后。结果 MEG与MRI一致的病例手术有效率(Engel class I or Ⅱ)及术后无发作率(Engel class IA)均优于不一致者。结论病灶性新皮质癫癎,MEG结果与MRI结果一致时手术效果良好,对此类病例不需要再进行颅内电极植入行癫癎灶定位,颅内电极植入仅适用于MEG结果与MRI结果不一致的病例或需要功能区定位者。展开更多
基金ThisworkwassupportedpartlybyagrantfromtheNaturalScienceResearchFoundationofJiangsuProvince ,China (No 990 14 5 )
文摘Objective To investigate the effects of combination therapy with methylprednisolone (MP) and brain-derived neurotrophic factor (BDNF) on axonal remyelination and functional recovery after spinal cord injury in rats. Methods Forty-five rats were randomly divided into three groups: Group A received MP and BDNF; group B received MP and cerebrospinal fluid (CSF); and group C received CSF only. Contusion injury to adult rat spinal cord was produced at the T10 vertebra level followed by immediate intravenous MP or CSF, and was thereafter infused intrathecally with BDNF or CSF for 6 weeks. Axonal remyelination and functional recovery was observed using RT-PCR, immunohistochemistry and open field locomotion. Results An increase of 28.4%±2.3% in the expression of proteolipid protein (PLP) gene, an endogenous indicator of axonal remyelination, was demonstrated in group A 24 hours after injury. Ten weeks later, there were significant decreases in hematogenous inflammatory cellular infiltration in groups A and B compared to C (P<0.05). Concomitantly, a significant amount of axonal remyelination was observed in group A compared to groups B and C (P<0.05). Furthermore, combination therapy using MP and BDNF in group A resulted in stimulation of hindlimb activity as well as improvement in the rate of functional recovery in open field locomotion (P<0.05). Conclusions Combined therapy of MP and BDNF can improve functional recovery through mechanisms that include attenuating inflammatory cellular infiltration and enhancing axonal remyelination at the injury site. Such a combination may be an effective approach for treatment of spinal cord injury.
文摘目的研究病灶性新皮质癫癎发作间期MEG和MRI一致性与预后的关系。方法 23例病灶性新皮质癫癎接受了术前评估及手术治疗,所有患者术前均接受MEG检测,数据分析处理采用等价电流偶极子(ECD)法和合成孔径法(SAMg2)。7例患者接受了颅内电极植入后长程视频皮层脑电图监测。术后随访一年以上并运用Engel法评价预后。结果 MEG与MRI一致的病例手术有效率(Engel class I or Ⅱ)及术后无发作率(Engel class IA)均优于不一致者。结论病灶性新皮质癫癎,MEG结果与MRI结果一致时手术效果良好,对此类病例不需要再进行颅内电极植入行癫癎灶定位,颅内电极植入仅适用于MEG结果与MRI结果不一致的病例或需要功能区定位者。