癫痫病中医病因证型研究进展

癫痫是一种脑部疾病,其特点是持续存在能够增加未来出现癫痫发作可能性的脑部持久性改变,并出现相应的神经生物学、认知、心理学和社会功能障碍等方面的后果.目前主要治疗方法以抗（癎）类药物为主,约25％的患者使用常规药物治疗病情难以得到控制,反而转变为药物难治性癫痫.     

广谱基质金属蛋白酶抑制剂对高血压肾纤维化的影响

目的 研究多西环素(DOX)对卒中易感型自发性高血压大鼠(SHR-SP)肾脏基质金属蛋白酶(MMPs)及金属蛋白酶组织型抑制剂(TIMPs)活性的影响,探讨DOX对高血压肾纤维化病理转归的作用机制.方法 选用7周龄雄性SHR-SP随机分为药物干预组和对照组,定期观察大鼠体重、测量无创鼠尾压、尿量、尿肌酐、尿蛋白变化.观察终止时进行血流动力学分析;测定血清肌酐、尿素氮浓度;采用组织病理、明胶酶谱和逆明胶酶谱等方法观察各组大鼠肾脏组织学改变和MMP-2、MMP-9、TIMP-1、TIMP-2等活性变化.结果 收缩压、脉压、血清肌酐浓度在DOX组与对照组之间无统计学差异,但DOX组有升高趋势;从19周龄起,DOX组大鼠尿蛋白浓度与尿肌酐浓度比值即高于对照组[(8.3±6.4 vs 3.3±2.0)mg/μmol,P＜0.05];病理染色显示肾小管损伤平均指数和胶原容积分数均高于对照组(损伤平均指数:3.14±0.47 vs 2.69±0.38,P＜0.05;胶原容积分数:10.5%±2.7% vs 6.6%±1.9%,P＜0.01);与血压正常大鼠相比,高血压大鼠肾脏MMP-2、MMP-9、TIMP-1和TIMP-2的活性升高;药物干预后MMP-2、MMP-9活性降低(MMP-2:2.62±0.75 vs 3.39±0.92;MMP-9:2.89±1.13 vs 4.01±0.91,P＜0.05),而TIMP-1、TIMP-2活性则显著升高(TIMP-1:2.89±1.76 vs 1.54±0.86,P＜0.05;TIMP-2:1.69±0.47 vs 1.06±0.47,P＜0.01).结论 广谱基质金属蛋白酶抑制剂DOX可以抑制SHR-SP肾脏中MMP-2、MMP-9活性,加重高血压造成的肾脏损害.在肾脏损害发生后,抑制MMPs活性可能会加重高血压肾脏纤维化的进展.     

Zeb2通过EMT过程调节小鼠脊髓损伤后星形胶质细胞增多及运动功能恢复

目的:探索Zeb2基因对小鼠脊髓损伤(spinal cord inj ury,SCI)的作用及其可能机制.方法:36只雄性健康小鼠随机分为3组:对照组(sham组12只)、脊髓损伤组(SCI组12只)和脊髓损伤Zeb2条件敲除组(Zeb2cKO组12只),采用脊髓打击法建立SCI小鼠模型,随后2周内采用脊髓运动功能评分...     

井穴诊疗法的研究

井穴是位于人体四肢末节的腧穴。观察或检测井穴的相关变化可协助诊断疾病。刺灸井穴可治疗多种疾病,尤其是井穴刺络放血,是我国传统医学中常用的急救措施之一;现代临床也将该疗法用于急救内科疾病、中毒和外伤导致的昏迷,并从多角度阐释了其相关作用机制。井穴的临床运用还进一步扩展至其他领域,如预防保健等。本文以天津中医药大学实验针灸学团队多年来在井穴诊疗方面的研究成果为主,综合国内外有关井穴的研究,系统介绍了井穴在诊断和治疗方面的成果,并提出“井穴刺络,通调脑络”“刺激井穴,健脑启智”“十二井穴是调节植物神经功能的重要部位”等观点。     

神经干细胞在新型复合支架中的生长和分化

BACKGROUND:Neural stem cells with self-proliferation and differentiation potential are the ideal seed cells for central nervous tissue engineering. Although collagen and silk fibroin as biological scaffold materials have been widely used, both of them used alone have certain shortcomings. Is it possible to combine the two materials to build a novel neural tissue-engineered scaffold? What is the effect of this novel scaffold on the growth and differentiation of neural stem cells? OBJECTIVE:To observe the growth and differentiation of neural stem cells seeded onto the novel composite scaffold. METHODS:The rat embryonic neural stem cells were inoculated onto new composite scaffolds, and then, their growth and differentiation were observed by light microscopy and scanning electron microscopy. Neural stem cells were cultured in conventional suspension culture as control group. Cell counting kit-8 assay was used to detect viability of neural stem cells in the two groups. Three-dimensional composite scaffolds carrying neural stem cells were sliced into paraffin sections to observe the growth and differentiation of neural stem cells by hematoxylin-eosin staining and immunofluorescence staining. RESULTS AND CONCLUSION: Neural stem cells cultured on the new composite scaffold grew and differentiated well, and interconnected synapses were observed. Cell counting kit-8 assay showed that neural stem cells on the scaffold grew well, and the cell viability was significantly higher in the composite scaffold group than that in the control group (P < 0.05). Hematoxylin-eosin staining and immunofluorescence staining of paraffin sections further provided evidence for good growth and differentiation of neural stem cells on the scaffold. These results indicate that the novel composite scaffold with good biocompatibility benefits the growth and differentiation of neural stem cells, promising a favorable application prospect.     

基质金属蛋白酶及其抑制剂与脑血管疾病

基质金属蛋白酶的含量和活性在脑缺血、颈动脉粥样硬化斑块、脑动静脉畸形、脑动脉瘤等病理状态下明显增高,提示该蛋白酶与脑血管疾病的发生关系密切。动物试验显示,基质金属蛋白酶抑制剂能明显减小脑梗死体积及脑损伤范围,并可稳定易破裂的动脉粥样硬化斑块,抑制脑动脉瘤的膨胀。由此基质金属蛋白酶可能成为防治脑卒中的新靶点。     

抗tau蛋白抗体基因疗法对慢性颅脑创伤的治疗作用研究

目的探究抗tau蛋白（pTau）基因腺病毒相关病毒（AAV）载体中枢神经系统（CNS）直接干预对慢性颅脑创伤（CTE）的治疗效果。 方法随机选取24只C57小鼠按随机数字表法分为3组,正常对照组（sham组）、CTE 4周组和CTE 12周组,每组8只,采用皮质撞击法建立CTE小鼠动物模型,并在实验开始的第4、12周时取脑组织Western blot检测pTau蛋白相对水平评估该模型;将余56只小鼠按随机数字表法分为7组：sham组、noAAV组、AAVrh.10Null组和编码2B6、CisTau、IPN007、PHF1基因载体组,每组8只,除sham组外,各组小鼠通过皮质撞击法构建CTE模型。第3周时sham组与noAAV组注射等量人工脑脊液,其余各组小鼠分别在海马区注射对应基因编码的表达载体,第4周时所有小鼠安乐死,取脑组织进行免疫荧光和Western blot法评估抗pTau抗体表达,并评估对CTE小鼠的治疗效果。 结果CTE小鼠模型4和12周组脑组织pTau明显高于sham组,差异均具有统计学意义（P<0.05）;AAVrh.10 PHF1与AAVrh.10 IPN治疗组显著降低了小鼠脑组织中pTau的水平,且AAVrh.10 PHF1组优于AAVrh.10 IPN组（P=0.032）。 结论抗pTau抗体基因的AAVrh.10病毒载体CNS直接治疗CTE有效,为治疗提供了新的方向。