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摇蚊亚科中国一新纪录属——脊突摇蚊属(双翅目:摇蚊科)
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作者 闫春财 李悦 王新华 《四川动物》 CSCD 北大核心 2011年第5期731-733,共3页
记述了摇蚊亚科中国一新纪录属——脊突摇蚊属 Cyphomella Sther,1977。给出了膜脊突摇蚊 C.cornea Sther,1977 的详细描述、绘图以及世界脊突摇蚊属雄成虫分种检索表。标本保存于南开大学生命科学学院。
关键词 摇蚊科 脊突摇蚊属 新纪录属 中国
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前缘突脊倾斜气膜冷却效果的实验 被引量:7
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作者 杨成凤 张靖周 +1 位作者 陈利强 吴世勋 《工程热物理学报》 EI CAS CSCD 北大核心 2008年第7期1174-1176,共3页
为了研究前缘突脊结构对气膜冷却的影响规律,设计了3种不同堵塞比的突脊模型,研究了气膜冷却效率随吹风比、堵塞比的变化规律。研究结果表明,与典型的圆柱型气膜孔相比,前缘突脊的存在大大提高了气膜冷却效率;前缘突脊在大吹风比下的作... 为了研究前缘突脊结构对气膜冷却的影响规律,设计了3种不同堵塞比的突脊模型,研究了气膜冷却效率随吹风比、堵塞比的变化规律。研究结果表明,与典型的圆柱型气膜孔相比,前缘突脊的存在大大提高了气膜冷却效率;前缘突脊在大吹风比下的作用更加明显;研究范围内存在最佳堵塞比。 展开更多
关键词 气膜冷却 冷却效率
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腰椎间盘髓核突入硬膜下腔1例
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作者 赵留全 黄昌林 +1 位作者 王炳南 韩西 《实用医药杂志》 1994年第3期171-171,共1页
腰椎间盘髓核突入硬膜下腔1例150医院赵留全,黄昌林,王炳南,韩西我院于1993年8月收治1例手术证实腰椎间盘髓核组织突入硬膜下腔的病人。男,61岁。因“腰痛伴双下肢放射性疼痛、麻木无力2月。牵引,按摩等治疗无效,1... 腰椎间盘髓核突入硬膜下腔1例150医院赵留全,黄昌林,王炳南,韩西我院于1993年8月收治1例手术证实腰椎间盘髓核组织突入硬膜下腔的病人。男,61岁。因“腰痛伴双下肢放射性疼痛、麻木无力2月。牵引,按摩等治疗无效,1993-08-17入院。检查:第四... 展开更多
关键词 腰椎间盘髓核 硬膜下腔 髓核组织 椎间盘 神经根 椎间盘脱出 腰椎脊突 直腿抬高试验 纤维环破裂 进修医师
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济阳坳陷细粒沉积岩形成环境及沉积构造 被引量:19
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作者 王勇 宋国奇 +4 位作者 刘惠民 郝雪峰 姜秀芳 银燕 杨万芹 《东北石油大学学报》 CAS 北大核心 2015年第3期7-14,31,共9页
根据膏岩盐、碳酸盐岩分布规律和地层水特征,结合锶同位素、碳同位素和薄片资料,研究济阳坳陷沙四上—沙三下亚段高灰质泥页岩细粒岩沉积形成环境.结果表明:沉积岩属于封闭半咸化—咸化安静湖盆的产物,不仅发育大量代表静水条件的纹层,... 根据膏岩盐、碳酸盐岩分布规律和地层水特征,结合锶同位素、碳同位素和薄片资料,研究济阳坳陷沙四上—沙三下亚段高灰质泥页岩细粒岩沉积形成环境.结果表明:沉积岩属于封闭半咸化—咸化安静湖盆的产物,不仅发育大量代表静水条件的纹层,还发育代表水动力较强环境的交错层理、冲刷面等沉积构造.纹层主要包括波状钙质纹层、水平隐晶钙质纹层、水平亮晶钙质纹层、水平泥质纹层和水平含粉砂泥质纹层,形成主要受气候、盐度、水深及物源供给等因素控制;交错层理和冲刷面为该地区最为特殊的沉积构造,成因与风暴、泥质浊流和絮凝作用有关;脊突构造与泥岩中水快速排出有关.这些沉积构造在一定程度上影响细粒沉积动力机制研究,也为细粒沉积体系划分、细粒沉积层序地层等研究提供依据. 展开更多
关键词 细粒沉积岩 纹层 交错层理 冲刷面 脊突构造 济阳坳陷
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五种鸟体羽虱卵扫描电镜观察 被引量:1
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作者 周忠勇 施新泉 +2 位作者 周淑君 孙建华 刘素兰 《中国兽医寄生虫病》 1998年第1期11-14,共4页
为了了解褐马鸡、白马鸡、绿孔雀、珍珠鸡和白腹锦鸡体上的5种羽虱形态的亚微结构进行了扫描电镜观察,结果证实各种羽虱卵卵壳的凹孔大小、凹孔间脊突的排列方向、间脊突表面所具有的微孔和微刺、卵前端卵体周缘的结构及指状突的有无,... 为了了解褐马鸡、白马鸡、绿孔雀、珍珠鸡和白腹锦鸡体上的5种羽虱形态的亚微结构进行了扫描电镜观察,结果证实各种羽虱卵卵壳的凹孔大小、凹孔间脊突的排列方向、间脊突表面所具有的微孔和微刺、卵前端卵体周缘的结构及指状突的有无,5种羽虱卵各有差异,这些特征均可作为种间分类依据。 展开更多
关键词 羽虱卵 凹孔 脊突 微孔 微刺
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中国近海裸鳃类两新纪录种
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作者 宋希坤 秦骥 +1 位作者 柯才焕 李复雪 《台湾海峡》 CAS CSCD 北大核心 2009年第1期1-6,共6页
裸鳃类是重要的底栖生物类群.部分裸鳃类栖息在码头、养殖网箱、浮标、船底等人工设施上的污损生物群落中.该种生境的祼鳃类国内鲜有报道.2004年11月至2007年9月期间,作者多次在福建省近海污损生物中采集到两种裸鳃类标本.结合其外部形... 裸鳃类是重要的底栖生物类群.部分裸鳃类栖息在码头、养殖网箱、浮标、船底等人工设施上的污损生物群落中.该种生境的祼鳃类国内鲜有报道.2004年11月至2007年9月期间,作者多次在福建省近海污损生物中采集到两种裸鳃类标本.结合其外部形态和内部齿舌形态,鉴定它们为东方伪二列鳃(Pseudobornella orientalis)及透明脊突海牛(Okenia pellucida).这两种裸鳃类在我国近海均属首次纪录. 展开更多
关键词 裸鳃类 东方伪二列鳃 透明脊突海牛 新纪录种 中国近海
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小儿骨髓穿刺术的改进
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作者 李招金 严健 李瑶芳 《南昌大学学报(医学版)》 CAS 1999年第S1期91-91,共1页
关键词 骨髓穿刺术 腰椎脊突 江西省 注射器 注射针头 骨髓液涂片 得了满意的效果 骨髓穿刺针 儿童医院 普鲁卡因
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动力性固定治疗腰椎退变性疾病研究进展
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作者 圣小平 樊天佑 《国际骨科学杂志》 2008年第5期313-315,344,共4页
动力性固定治疗腰椎退变性疾病是当前脊柱外科研究的热点之一。椎管减压加脊柱融合术是常用的治疗腰椎退变性疾病的手术方法,但长期随访研究发现它会导致或加速腰椎邻近节段退变。近年研究发现动力性固定能维持脊柱的活动和稳定,恢复生... 动力性固定治疗腰椎退变性疾病是当前脊柱外科研究的热点之一。椎管减压加脊柱融合术是常用的治疗腰椎退变性疾病的手术方法,但长期随访研究发现它会导致或加速腰椎邻近节段退变。近年研究发现动力性固定能维持脊柱的活动和稳定,恢复生理性负荷传导,避免邻近节段退变的发生。脊突间撑开装置可限制脊柱过伸,减轻神经受压,可治疗腰椎狭窄引起的间隙性跛行;椎弓根螺钉-韧带系统可维持脊柱稳定,恢复正常的负荷传导,可治疗腰椎不稳引起的下腰痛;脊突间韧带装置和半刚性椎弓根螺钉固定金属装置也可治疗腰椎退变性疾病。多数临床研究表明动力性固定疗效优异,但它主要适用于轻中度腰椎退变性疾病,应严格掌握适应证。 展开更多
关键词 动力性固定 腰椎退变 脊突间撑开装置 椎弓根螺钉-韧带系统
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椎管内穿刺单指固定法
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作者 张彦伟 李长营 郭爱华 《中华当代医学》 2004年第8期98-98,共1页
在进行椎管内穿刺时,传统教科书上所讲的固定方法都是双指固定法:即在摸清所选定的椎间隙后,用左手的拇、食指固定穿刺点皮肤,右手持针,将穿刺针在拇、食指和上下脊突间所形成的四边形中心与病人背部垂直,针尖稍向头侧缓慢刺入(如... 在进行椎管内穿刺时,传统教科书上所讲的固定方法都是双指固定法:即在摸清所选定的椎间隙后,用左手的拇、食指固定穿刺点皮肤,右手持针,将穿刺针在拇、食指和上下脊突间所形成的四边形中心与病人背部垂直,针尖稍向头侧缓慢刺入(如图1)。这种固定方法,在体形较瘦的病人使用较好,但对于体形较肥胖的病人来说,往往不容易找准所固定四边形的中心,以致不易单次穿刺成功。 展开更多
关键词 椎管内穿刺 单指固定法 脊突上缘 椎间隙
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骨髓穿刺序程解析 被引量:4
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作者 钟振宇 《淮海医药》 2003年第3期197-199,共3页
关键词 血液疾病 诊断 骨髓穿刺 骼前上棘穿刺技术 骼后上棘穿刺技术 胸骨穿刺技术 脊突穿刺技术 胫骨穿刺技术
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88例小儿骨髓穿剌方法改进的体会
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作者 朱道伦 《现代医药卫生》 1995年第Z1期35-35,共1页
1994年,我们采用8号头皮静脉针经脊突穿刺的方法,取得了满意的效果,现介绍如下: 1 临床资料 88例病儿中,拟诊血液病41例,特发性血小板减少性紫瘢32例,贫血原因待查12例,结缔组织病3例;最小年龄3个月,最大年龄12岁,平均年龄5岁半;男性54... 1994年,我们采用8号头皮静脉针经脊突穿刺的方法,取得了满意的效果,现介绍如下: 1 临床资料 88例病儿中,拟诊血液病41例,特发性血小板减少性紫瘢32例,贫血原因待查12例,结缔组织病3例;最小年龄3个月,最大年龄12岁,平均年龄5岁半;男性54例,女性34例。 操作方法:(1)置患儿于操作台,取侧卧位,低头,双手抱膝,腰部尽量弓起,使脊突充分暴露,对年龄小于5岁或不合作者。 展开更多
关键词 方法改进 骨髓腔 腰椎脊突 注射器 头皮静脉针 硅胶管 小于5岁 得了满意的效果 贫血原因 姿式
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Superior mesenteric artery syndrome following scoliosis surgery: Its risk indicators and treatment strategy 被引量:11
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作者 Ze-ZhangZhu YongQiu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第21期3307-3310,共4页
AIM: To investigate the risk indicators, pattern of clinical presentation and treatment strategy of superior mesenteric artery syndrome (SMAS) after scoliosis surgery.METHODS: From July 1997 to October 2003, 640 patie... AIM: To investigate the risk indicators, pattern of clinical presentation and treatment strategy of superior mesenteric artery syndrome (SMAS) after scoliosis surgery.METHODS: From July 1997 to October 2003, 640 patients with adolescent scoliosis who had undergone surgical treatment were evaluated prospectively, and among them seven patients suffered from SMAS after operation. Each patient was assigned a percentile for weight and a percentile for height. Values of the 5th、 10th、 25th、 50th、 75th、 and 95thpercentiles were selected to divide the observations. The sagittal Cobb angle was used to quantify thoracic or thoracolumbar kyphosis. All the seven patients presented with nausea and intermittent vomiting about 5 d after operation.An upper gastrointestinal barium contrast study showed a straight-line cutoff at the third portion of the duodenum representing extrinsic compression by the superior mesenteric artery (SMA).RESULTS: The value of height in the seven patients with SMAS was above the mean of sex- and age-matchednormal population, and the height percentile ranged from 5% to 50%. On the contrary, the value of weight was below the mean of normal population with the weight percentile ranging from 5% to 25%. Among the seven patients, four had a thoracic hyperkyphosis ranging from 55° to 88°(average 72°), two had a thoracolumbar kyphosis of 25° and 32° respectively. The seven patients were treated with fasting, antiemetic medication, and intravenous fluids infusion. Reduction or suspense of traction was adopted in three patients with SMAS during halo-femoral traction after anterior release of scoliosis. All the patients recovered completely with no sequelae. No one required operative intervention with a laparotomy.CONCLUSION: Height percentile<50% , weight percentile <25%, sagittal kyphosis, heavy and quick halo-femoral traction after spinal anterior release are the potential risk indicators for SMAS in patients undergoing correction surgery for adolescent scoliosis. 展开更多
关键词 SCOLIOSIS Superior mesenteric artery syndrome INDICATORS
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POSTERIOR SELECTIVE THORACIC FUSION IN ADOLESCENT IDIOPATHIC SCOLIOSIS 被引量:4
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作者 BinYu Jian-guoZhang Gui-xingQiu Yi-pengWang Xi-shengWeng 《Chinese Medical Sciences Journal》 CAS CSCD 2004年第3期216-220,共5页
To define the criteria of posterior selective thoracic fusion in patients with adolescent idiopathic scoliosis. Methods By reviewing the medical records and roentgenograms of 17 patients with adolescent idiopathic sco... To define the criteria of posterior selective thoracic fusion in patients with adolescent idiopathic scoliosis. Methods By reviewing the medical records and roentgenograms of 17 patients with adolescent idiopathic scoliosis who un-derwent posterior selective thoracic fusion, the curve type, Cobb angle, apical vertebral rotation and translation, trunk shift, and thoracolumbar kyphosis were measured and analyzed. Results There were 17 King type Ⅱ patients (PUMC type: Ⅱb1 13, Ⅱc3 4). The coronal Cobb angle of thoracic curve be-fore and after operation were 56.9°and 21.6° respectively, the mean correction rate was 60.1%. The coronal Cobb angle of lumbar curve before and after operation were 34.8° and 12.1° respectively, and the mean spontaneous correction rate was 64.8%. At final follow-up, the coronal Cobb angle of thoracic and lumbar curve were 23.5° and 15.2° respectively, there were no significant changes in the coronal Cobb angle, apical vertebral translation and rotation compared with that after operation. One patient had 12° of thoracolumbar kyphosis after operation, no progression was noted at final follow-up. There was no trunk decompensation or deterioration of the lumbar curve. In this group, 3.9 levels were saved compared with fusing both the th-oracic and lumbar curves. Conclusion Posterior selective thoracic fusion can be safely and effectively performed in King type Ⅱ patients with a mo-derate and flexible lumbar curve, which can save more mobile segments and at the same time can maintain a good coronal and sagittal balance. 展开更多
关键词 adolescent idiopathic scoliosis selective thoracic fusion
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Protrusion of Lumbar Intervertebral Disc Treated by Ultra Short Wave and the Point Injection in 40 Cases
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作者 张彩芳 陈正秋 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2003年第1期43-44,共2页
Since 1996,the author has treated 40 cases of protrusion of lumbar intervertebral disc with ultra short wave and the point injection,and obtained good therapeutic effects.This is reported as follows.
关键词 Acupuncture Points Lumbar Vertebrae Short-Wave Therapy ADULT Combined Modality Therapy FEMALE Humans INJECTIONS Intervertebral Disk Displacement MALE Middle Aged THIAMINE Vitamin B 12
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Differentiation of rat oligodendrocyte precursor cells in chemical conditional medium in vitro
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作者 Wu Bo Ye Feng Ren Xianjun 《Journal of Medical Colleges of PLA(China)》 CAS 2008年第4期209-214,共6页
Objective: To investigate in vitro differentiation of oligodendrocyte precursor cells (OPCs) into mature oligodendrocytes in chemical conditional medium. Methods: The mixed glial cells from cerebral cortices of 48-hou... Objective: To investigate in vitro differentiation of oligodendrocyte precursor cells (OPCs) into mature oligodendrocytes in chemical conditional medium. Methods: The mixed glial cells from cerebral cortices of 48-hour-old Sprague-Dawley (SD) rats were cultured in vitro. The OPCs were separated by shaking procedure around 9–10 d in the primary culture. Then the isolated OPCs were further transferred into the chemical conditional medium for cell differentiation. The pattern of OPCs maturation in vitro was continuously observed with contrast phase microscopy and mature oligodendrocytes were further identified by immunocytochemical assays. Results: OPCs grew well when co-cultured with glial cells and distinct cellular stratification formed about 9–10 d in the primary culture, which indicated the appropriate opportunity for the separation of OPCs. Following cultured in the chemical conditional medium, the OPCs progressively differentiated into the mature oligodendrocytes. These mature oligodendrocytes were also immunostained with the oligodendrocyte lineage-specific antibody, Oligo2. Conclusion: The OPCs isolated from the cerebral cortices of neonatal SD rats can progressively differentiate into mature oligodendrocytes in the chemical conditional medium in vitro. 展开更多
关键词 Oligodendrocyte precursor cell Cell culture DIFFERENTIATION Spinal cord injury
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The effect of acupuncture at “Jǐng Jiājǐ”(颈夹脊) on auditory brainstem response threshold of guinea pigs with sensorineural hearing loss 被引量:1
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作者 李种泰 崔丽娜 《World Journal of Acupuncture-Moxibustion》 CSCD 2015年第1期44-46,共3页
Objective To explore the effect of acupuncture at "Jing Jiaji" (颈夹背) on sudden hearing loss by observing the changes of the threshold of auditory brainstem response (ABR) of deaf guinea pigs. Methods Sixty he... Objective To explore the effect of acupuncture at "Jing Jiaji" (颈夹背) on sudden hearing loss by observing the changes of the threshold of auditory brainstem response (ABR) of deaf guinea pigs. Methods Sixty healthy guinea pigs were selected, with computer randomization, 20 were randomly divided into a normal control group (group A), while the rest were randomly and equally divided into a model group (group B) and an acupuncture group (group C) when turned deaf after gentamycin sulfate and furosemide were administered. No treatment was administered for either the group A or the group B, while acupuncture at "Jing Jiaji" was given for the group C for 30 days. The ABR thresholds of each group were observed and recorded separately after the treatment for 15 days and 30 days. Results The ABR threshold in the group C was lower than that in the group B after the treatment of 15 days (P〈O.05). After the treatment of 30 days, the ABR threshold in the group C was obviously lower than that in the group B (P〈0.01), and was obviously lower than that before acupuncture (P〈0.01). Conclusion Acupuncture at "Jing Jiaji" has definite effect on improving the hearing of deaf guinea pigs. 展开更多
关键词 sudden hearing loss Jing JiQji guinea pigs auditory brainstem response (ABR)
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Electroacupuncture at jiājǐ(夹脊 EX-B2) for lumbar intervertebral disc herniation:A randomized controlled trial 被引量:7
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作者 Ping SHAO Zhen DU +4 位作者 Zhiping XIN Xiao ZHENG Minlei QIU Zheng ZHU Xuming YANG 《World Journal of Acupuncture-Moxibustion》 CSCD 2018年第3期167-173,I0003,共8页
Objective: To compare the effect differences of electroacupuncture(EA) at Jiajǐ(夹脊 EX-B2) and conventional acupoints for lumbar intervertebral disc herniation(LIDH) and the factors influenced the effect duri... Objective: To compare the effect differences of electroacupuncture(EA) at Jiajǐ(夹脊 EX-B2) and conventional acupoints for lumbar intervertebral disc herniation(LIDH) and the factors influenced the effect during the way of data mining.Methods: A total of 160 patients of LIDH were randomly assigned into the EX-B2 group and the conventional acupoints group, 80 cases in each one. The patients in the EX-B2 group received EA at the symmetrical 2 acupoints of the bilateral EX-B2 on the lesion part. The patients in the conventional acupoints group received EA at the tender point of the lesion part, Zhibian( 秩边BL54), Huantiao(环跳 GB30),weǐzhōng(委中BL40), Chéngshān(承山BL57) and Fúyáng(跗阳BL59) on the affected side. The retain time of the needles is both 45 min. The treatment of the two groups is 3 times a week and for a connective 20 times. The modified Assessment Criteria for Low Lumbar Pain of Japanese Orthopedic Association(JOA),Visual Analogue Scale(VAS) were evaluated before and after the treatment and at the 6-month follow up.Results:(1) Effective outcomes. JOA score: The JOA score of the patients in the EX-B2 group after treatment was(20.89 士 3.43), and was(19.35 ±4.02) on the follow-up. Compared with the JOA score(12.35 ±4.42) in the same group before the treatment, there were statistical significant higher(both P0.05). The JOA score in the EX-B2 group after treatment and on the follow-up were both higher than that of the conventional acupoints group at the same time point(both P0.05). VAS score: The VAS score of the patients in the EX-B2 group on the 24 h after the first treatment was(4.09 ± 1.81), and was(2.11 ± 1.30) after the treatment. Compared with the VAS score(4.09 ± 1.81) in the same group before the treatment, there were statistical significant lower(both P0.05). The VAS score in the EX-B2 group on the 24 h after the first treatment and after treatment showed no statistical differences than that of the conventional acupoints group at the same time point(both P0.05).(2)Related results from data mining: The middle-aged people and disease duration less than six months, their effect of the immediate treatment was the best. According to JOA score, EA at EX-B2 was better than EA conventional acupoints,either in the process of treatment effect, or in pertinence of the treatment, which were superior to EA conventional acupoints therapy; The best curative effect time of EA at EX-B2 was the first treatment after24 h, and the best curative effect of the conventional acupoints was after the first treatment. The age and disease duration also affected curative effect.Conclusion: The effect of EA at EX-B2 was superior to the conventional acupoints in treating LIDH. 展开更多
关键词 ELECTROACUPUNCTURE jiājǐ(夹 EX-B2) Lumber intervertebral disc herniation Association algorithm Decision tree Grey slope correlation algorithm Effect
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Protein kinase C regulates neurite outgrowth in spinal cord neurons
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作者 杨萍 李振强 +1 位作者 宋林 殷玉芹 《Neuroscience Bulletin》 SCIE CAS CSCD 2010年第2期117-125,共9页
Objective The functional roles of protein kinase C (PKC) in the neurite outgrowth and nerve regeneration remain controversial. The present study was aimed to investigate the role of PKC in neurite outgrowth, by stud... Objective The functional roles of protein kinase C (PKC) in the neurite outgrowth and nerve regeneration remain controversial. The present study was aimed to investigate the role of PKC in neurite outgrowth, by studying their regulatory effects on neurite elongation in spinal cord neurons in vitro. Methods The anterior-horn neurons of spinal cord from embryonic day 14 (E14) Sprague-Dawley (SD) rats were dissociated, purified and cultured in the serum-containing medium. The ratio of membrane-PKC (mPKC) activity to cytoplasm-PKC (cPKC) activity (m/c-PKC) was studied at different time points during culture. Results Between 3-11 d of culture, the change of m/c-PKC activity ratio and PKC-βⅡ expression in the neurite were both significantly correlated with neurite outgrowth (r=0.95, P 〈 0.01; r=0.73, P 〈 0.01, respectively). Moreover, PMA, an activator of PKC, induced a dramatic elevation in the m/c-PKC activity ratio, accompanied with the increase in neurite length (r=-0.99, P 〈 0.01). In contrast, GF 109203X, an inhibitor of PKC, significantly inhibited neurite elongation, which could not be reversed by PMA. Conclusion PKC activity may be important in regulating neurite outgrowth in spinal cord neurons, and βⅡ isoform of PKC probably plays a major role in this process. 展开更多
关键词 protein kinase C spinal cord neurons neurite outgrowth in vitro
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Influences of olfactory ensheathing cells transplantation on axonal regeneration in spinal cord of adult rats 被引量:5
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作者 沈慧勇 唐勇 +2 位作者 吴燕峰 陈燕涛 程志安 《Chinese Journal of Traumatology》 CAS 2002年第3期136-141,共6页
Objective: To observe whether olfactory ensheathing cells could be used to promote axonal regeneration in a spontaneously nonregenerating system.Methods: After laminectomy at the lower thoracic level, the spinal cords... Objective: To observe whether olfactory ensheathing cells could be used to promote axonal regeneration in a spontaneously nonregenerating system.Methods: After laminectomy at the lower thoracic level, the spinal cords of adult rats were exposed and completely transected at T10. A suspension of ensheathing cells was injected into the lesion site in 12 adult rats, and control D/F 12 ( 1∶1 mixture of DMEM and Hams F 12) was injected in 12 adult rats. Six weeks and ten weeks after cell transplantation, the rats were evaluated by climbing test and motor evoked potentials (MEPs) monitoring. The samples were procured and studied with histologicl and immunohistochemical methods.Results: At the 6th week after cell transplantation, all the rats in both the transplanted and control groups were paraplegic and the MEPs could not be recorded. At the 10th week after cell transplantation, of 7 rats in the control group, 2 rats had muscles contraction of the lower extremities, 2 rats had hips and/or knees active movement; and 5 rats MEPs could be recorded in the hind limbs in the transplanted group (n=7). None of the rats in the control group had functional improvement and no MEPs recorded (n=7). Numerous regenerating axons were observed through the transplantation and continued to regenerate into the denervated host tract. Cell labelling using anti Myelin Basic Protein (MBP) and anti Nerve Growth Factor Receptor (anti NGFR) indicated that the regenerated axons were derived from the appropriate neuronal source and that donor cells migrated into the denervated host tract. But axonal degeneration existed and regenerating axons were not observed within the spinal cords of the adult rats with only D/F 12 injection. Conclusions: The axonal regeneration in the transected adult rat spinal cord is possible after ensheathing cells transplantation. 展开更多
关键词 Spinal cord injuries Axonal regeneration Olfactory ensheathing cells
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Effect of fetal spinal cord graft with different methods on axonal pathology after spinal cord contusion 被引量:2
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作者 张强 廖维宏 +1 位作者 王正国 伍亚民 《Chinese Journal of Traumatology》 CAS 2001年第3期147-151,共5页
Objective: To investigate the effect of fetal spinal cord (FSC) graft with different methods on axonal pathology and neurological function recovery after spinal cord injury (SCI). Methods: Forty Wistar rats were divid... Objective: To investigate the effect of fetal spinal cord (FSC) graft with different methods on axonal pathology and neurological function recovery after spinal cord injury (SCI). Methods: Forty Wistar rats were divided into 4 groups. In Group A, the spinal cord was injured and hemisected. In Group B, fetal spinal cord (FSC) was transferred into the injured site. In Group C, after having done as Group B, the upper and lower spinal nerve roots were anastomosed. And in Group D, after having done as Group B, the pedicled omentum was transferred into the hemisection cavity. At 6 weeks after operation, light and electronic microscopes were used to examine the axonal pathology. The neurological function was assessed with inclined plane tests in the open field. The number of axons was quantitated by a computer image analysis system. Results: A greater loss of axons was observed in Group A than that of other groups at 6 weeks. The sequence of the reduced rate of the axons was as following, Group A>Group B>Group C>Group D (P< 0.05 ). The remaining axons were paralleled with the significant improvement in neurological function recovery of the rats. Conclusions: It indicates that FSC and pedicled omentum grafts after SCI can protect the axons and promote the neurological function recovery of the rats. 展开更多
关键词 Spinal cord injuries Embryo transfer OMENTUM Spinal nerve roots AXONS
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