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GDNF-Enhanced Axonal Regeneration and Myelination Following Spinal Cord Injury is Mediated by Primary Effects on Neurons 被引量:26
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作者 LIQUN ZHANG zhengwen ma +4 位作者 GEORGE M. SMITH XUEJUN WEN YELENA PRESSmaN PATRICK M. WOOD AND XIAO-MING XU 《神经损伤与功能重建》 2009年第4期268-281,共14页
我们先前研究表明胶质细胞源性神经营养因子(GDNF)联合施万细胞移植能促进脊髓损伤后轴突再生和髓鞘形成。然而,GDNF介导这一过程的细胞靶点尚不清楚。在此,我们报道了GDNF可增加在体再生轴突的数目和直径,并促进体外背根神经节神经元... 我们先前研究表明胶质细胞源性神经营养因子(GDNF)联合施万细胞移植能促进脊髓损伤后轴突再生和髓鞘形成。然而,GDNF介导这一过程的细胞靶点尚不清楚。在此,我们报道了GDNF可增加在体再生轴突的数目和直径,并促进体外背根神经节神经元的轴突向外生长,提示GDNF对神经元有直接作用。在施万细胞-背根神经节神经元共培养下,GDNF显著增加施万细胞生成的髓鞘数目;GDNF处理对孤立培养的施万细胞增殖无作用,但可促进已与神经轴突有突触联系的施万细胞增殖;GDNF可增加孤立施万细胞中分子量为140kDa的神经细胞黏附分子(NCAM)的表达,但对黏附分子L1表达或神经营养因子NGF、NT3及BDNF分泌没有影响。总之,这些结果支持假设:GDNF提高轴突再生和施万细胞髓鞘形成主要是通过GDNF对神经元的直接作用介导的,并且提示GDNF联合施万细胞移植可能是促进脊髓损伤后轴突再生和髓鞘形成的有效策略之一。 展开更多
关键词 GDNF 轴突 髓鞘形成 再生 施万细胞 脊髓损伤
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Surgical intervention combined with weight-bearing walking training improves neurological recoveries in 320 patients with clinically complete spinal cord injury:a prospective self-controlled study 被引量:4
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作者 Yansheng Liu Jia-Xin Xie +12 位作者 Fang Niu Zhexi Xu Pengju Tan Caihong Shen Hongkun Gao Song Liu zhengwen ma Kwok-Fai So Wutian Wu Chen Chen Sujuan Gao Xiao-Ming Xu Hui Zhu 《Neural Regeneration Research》 SCIE CAS CSCD 2021年第5期820-829,共10页
Although a large number of trials in the SCI field have been conducted,few proven gains have been realized for patients.In the present study,we determined the efficacy of a novel combination treatment involving surgic... Although a large number of trials in the SCI field have been conducted,few proven gains have been realized for patients.In the present study,we determined the efficacy of a novel combination treatment involving surgical intervention and long-term weight-bearing walking training in spinal cord injury(SCI)subjects clinically diagnosed as complete or American Spinal Injury Association Impairment Scale(AIS)Class A(AIS-A).A total of 320 clinically complete SCI subjects(271 male and 49 female),aged 16–60 years,received early(≤7 days,n=201)or delayed(8–30 days,n=119)surgical interventions to reduce intraspinal or intramedullary pressure.Fifteen days post-surgery,all subjects received a weight-bearing walking training with the“Kunming Locomotion Training Program(KLTP)”for a duration of 6 months.The neurological deficit and recovery were assessed using the AIS scale and a 10-point Kunming Locomotor Scale(KLS).We found that surgical intervention significantly improved AIS scores measured at 15 days post-surgery as compared to the pre-surgery baseline scores.Significant improvement of AIS scores was detected at 3 and 6 months and the KLS further showed significant improvements between all pair-wise comparisons of time points of 15 days,3 or 6 months indicating continued improvement in walking scores during the 6-month period.In conclusion,combining surgical intervention within 1 month post-injury and weight-bearing locomotor training promoted continued and statistically significant neurological recoveries in subjects with clinically complete SCI,which generally shows little clinical recovery within the first year after injury and most are permanently disabled.This study was approved by the Science and Research Committee of Kunming General Hospital of PLA and Kunming Tongren Hospital,China and registered at ClinicalTrials.gov(Identifier:NCT04034108)on July 26,2019. 展开更多
关键词 American Spinal Injury Association Impairment Scale–A functional recovery human intramedullary decompression spinal cord injury surgical intervention walking training
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税收助推中国自贸领头雁一路前行——试论税收对上海自贸区发展的作用及思考 被引量:2
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作者 马正文 刘洪波 江青松 《国际税收》 CSSCI 北大核心 2019年第10期5-10,共6页
—、引论建设自由贸易试验区是中国深化改革、扩大开放、应对国际变化的重大举措。而中国第一个自由贸易试验区选择在上海市诞生,与上海市在我国的经济地位和贸易地位息息相关,同时还与它拥有得天独厚的特殊优势—庞大的长三角经济腹地... —、引论建设自由贸易试验区是中国深化改革、扩大开放、应对国际变化的重大举措。而中国第一个自由贸易试验区选择在上海市诞生,与上海市在我国的经济地位和贸易地位息息相关,同时还与它拥有得天独厚的特殊优势—庞大的长三角经济腹地密不可分。 展开更多
关键词 自由贸易试验区 上海自贸区 长三角经济 税收 重大举措 扩大开放 领头雁 特殊优势
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