急性脑血管病与心肌酶谱改变相关性分析

目的探讨急性脑血管病与心肌酶谱改变相关性.方法对206例急性脑血管患者的以下情况进行回顾性调查:血清心肌酶谱,性别,年龄,神志,偏瘫等级,既往有无冠心病史,中医病理因素风、火、痰、瘀、虚,脑出血,脑梗塞,心电图改变,有无脑水肿、肺部感染、消化道出血等严重并发症,预后;并将调研资料经数量化处理输入计算机,应用统计学处理软件SPSS 11.0,进行急性脑血管病诸因素与血清心肌酶谱异常的相关性分析.结果急性脑血管病患者血清心肌酶升高与脑出血呈正相关(r=0.185,P<0.05),与中医病理因素火热呈正相关(r=0.215,P<0.05),与意识障碍呈显著性正相关(r=0.256,P<0.001),与并发症的发生呈显著性正相关(r=0.251,P<0.001),与死亡呈显著性正相关(r=0.312,P<0.001),与中医病理因素风呈负相关(r=-0.139,P<0.05),与中医病理因素瘀呈负相关(r=-0.174,P<0.05),与年龄、偏瘫等级、既往有无冠心病史及中医病理因素痰、虚以及脑梗塞、心电图改变无相关.结论急性脑血管病尤其脑出血伴意识障碍患者血清心肌酶谱容易升高且预后较差.     

Smad7基因沉默对细胞增殖的影响

TGF—β是一种多功能的细胞因子,可调节细胞的分化、增殖和凋亡。它对多种上皮细胞尤其是支气管上皮细胞的生长、增殖有很强的抑制作用。Smad7作为TGF—β信号转导通路的抑制分子,可以抑制TGF—β信号在胞浆内的传导。我们以永生化人支气管上皮细胞BEP2D,及恶性转化的BERP35T2细胞为基础所做的研究表明：Smad7基因的表达随细胞恶性度增高而增高,     

黄芪甲苷预处理对无血清及缺氧诱导的骨髓间充质干细胞 TNF-α、TGF-β1基因表达的影响

目的：观察黄芪甲苷预处理对无血清及缺氧诱导的骨髓间充质干细胞（MSCs）凋亡相关因子的影响,并探讨其作用机制。方法采用密度梯度离心法分离培养大鼠 MSCs,通过药物细胞毒性试验检测黄芪甲苷对 MSCs 细胞活性的影响,分别以40、80、160μg / mL 的黄芪甲苷预处理 MSCs 24 h,后进行无血清及缺氧培养24 h,RT-PCR 法检测细胞中 TNF-α、TGF-β1的基因表达情况。结果密度梯度离心法可有效分离大鼠MSCs;各浓度黄芪甲苷对 MSCs 细胞活力均无影响;无血清及缺氧诱导可下调 TGF-β1的基因表达;160μg / mL黄芪甲苷组可上调 TGF-β1的基因表达。结论无血清及缺氧诱导的 MSCs 凋亡可能是由于缺氧及生长因子匮乏的刺激所引起的,黄芪甲苷抑制无血清及缺氧诱导的 MSCs 凋亡的作用可能是通过提高 MSCs 在缺血缺氧环境下合成生长因子的能力实现的。     

重组E.coli. LLO/OVA明显增强小鼠CD11c细胞活性及抗肿瘤免疫

目的 探讨重组E.coli. LLO/OVA 诱导C57BL/6小鼠机体免疫的途径,观察其免疫后小鼠机体抑制B16-OVA黑色素瘤的效果.方法 磁珠分离E.coli. LLO/OVA及E.coli. OVA免疫后小鼠脾脏CD11c、CD4 和CD8 T细胞并检测CD11c细胞诱导同源CD4 和CD8 T增殖水平和细胞因子分泌程度;流式细胞检测小鼠脾脏内肿瘤抗原OVA257-264 SIINFEKL特异的细胞毒T细胞含量.比较两种E.coli. 免疫后,恶性黑色素瘤B16-OVA在小鼠肺内形成瘤结节的数量.结果 与E.coli. OVA相比, E.coli. LLO/OVA免疫后小鼠脾脏CD11c细胞诱导同源CD4 T细胞增殖作用增强、IL-2分泌增高;同时诱导CD8 T细胞增殖和IFN-γ分泌的作用也明显增强;OVA257-264 SIINFEKL特异的CD8 T细胞含量也明显增高;小鼠肺内形成B16-OVA瘤结节平均数明显减少. 结论 E.coli. LLO/OVA有效地诱导小鼠CD11c细胞活化,增强其对CD4 T细胞增殖和IL-2分泌以及对CD8 T细胞增殖、IFN-γ分泌的作用,诱导了更多的OVA特异的CD8 T细胞,使机体产生了更强的抗肿瘤免疫.     

刺壳花椒 HPLC 指纹图谱的研究

目的 采用高效液相色谱法研究并建立了产于张家界的刺壳花椒药材的指纹图谱。方法 Diamonsil C₁₈ 色谱柱 (250 mm×4.6 mm, 5 μm),乙腈-水流动相系统梯度洗脱,体积流量 1.0 mL/min,检测波长 278 nm。结果 对所采集的10批刺壳花椒药材进行了测定,建立了刺壳花椒的指纹图谱,共有11个共有峰。结论 HPLC 法色谱指纹图谱分析技术可用于刺壳花椒药材质量的控制。     

穴位埋线对血管性痴呆大鼠学习记忆能力和Bcl-2表达的影响

目的: 探讨穴位埋线对血管性痴呆(VD)大鼠学习记忆的影响及可能的机制.方法: 改良Pulsinelli's四血管阻断法建立血管性痴呆大鼠模型.造模后给予穴位埋线,用水迷宫检测学习记忆能力,免疫组织化学观察海马Bcl-2的表达.结果: 穴位埋线后VD大鼠学习记忆能力明显提高,海马齿状回Bcl-2表达增强.结论: 穴位埋线改善VD大鼠的学习记忆能力,可能与上调海马Bcl-2的表达、保护缺血后海马神经元有关.     

Reduction of RhoC is involved in the decreased migration of neural stem/precursor cells

OBJECTIVE Alzheimer′s disease(AD) is mainly characterized by a progressive loss of neurons and the deposition of beta-amyloid peptides(Aβ).It was demonstrated that transplanted and endogenous neural stem cells or neural precursor cells can survive,migrate,and differentiate into neurons.Previously we found that Aβ42 could disturb the migratory ability of neural stem/precursor cells.We therefore hypothesized that Aβ42 may affect some important proteins through Rho pathway and result in the decreased migration of neural stem/precursor cells.METHODS AND RESULTS We applied siRNA technology to knock down the expression of RhoC in neural stem/precursor cells and found that the expression of RhoC was down-regulated;Trans well assay was used to measure the migratory ability of the neural stem/precursor cells and the result showed that the migratory ability was disturbed when the expression of RhoC was down-regulated;WRW4 was used for inhibiting the effects of the Aβ42 through the FPRL1.CONCLUSION The reduction of RhoC was involved in the decreased migration of neural stem cells.     

The long-term outcomes of persistent childhood allergic asthma: A cross-sectional study from western Anatolia: Childhood persistent asthma in western Anatolia

BackgroundProspective cohort studies have provided useful knowledge about the natural history of asthma. However, most of the studies are conducted in western countries but the course of the disease and long-term outcomes may differ between countries due to environmental and cultural factors.ObjectiveThe aim of this study is to describe the long-term outcomes of childhood asthma, with data from a follow-up study of at least 10 years, in western Anatolia, Turkey.MethodsFifty-two patients diagnosed with persistent allergic asthma participated in the study. The patient's demographics, findings on admission, age at onset of disease, time of diagnosis, history of other allergic conditions, history of parental asthma and allergic disorders, presence of pharmacotherapy and immunotherapy were obtained from patients’ records. The factors influencing remission at the end of 10 years follow-up were evaluated.ResultsA total of 20 patients (38.5%) were on remission at the end of 10 years. The type of allergen, multi-allergen sensitivity, eosinophilia and elevated serum immunoglobulin E on admission, accompanying allergic disorders and atopy in parents, and allergen immunotherapy did not affect the remission rate (p > 0.05).ConclusionChildhood persistent asthma is not a homogeneous clinical entity but high clinical remission rates are obtained in western Anatolia. There is no significant predictor of clinical remission in long term follow-up. Prospective studies should be performed in larger asthmatic populations to obtain further data about the natural course of childhood asthma.     

大鼠心肌缺血预适应延迟相的差异蛋白质的分离及鉴定

目的采用蛋白质组学技术探讨缺血预适应心肌内源性保护的分子机制。方法应用双向凝胶电泳技术分离假手术组和心肌缺血预适应延迟相组大鼠的心肌总蛋白质。结果在假手术组的双向凝胶电泳图谱上展示704±27个蛋白质点,而在心肌缺血预适应延迟相组展示778±35个蛋白质点。经凝胶图像分析找到的差异蛋白质23个,基质辅助激光解析—电离飞行时间质谱对差异蛋白进行鉴定,共鉴定出12个蛋白质。这些蛋白质包括应激反应蛋白、代谢相关蛋白、信号调节蛋白、结构蛋白等。结论这些差异蛋白可能通过其分子伴侣功能、清除自由基、改善能量代谢等发挥心肌缺血预适应延迟相的心肌保护作用。