基于Morlet小波的事件相关脑磁图ERD/ERS分析方法

目的：验证基于Morlet小波的ERD/ERS计算方法在事件诱发脑磁图中的应用效果。方法：采用Morlet小波对事件相关脑磁图数据和静息状态下采集到的脑磁图数据进行小波变换,根据变换后的结果计算ERD/ERS值,分析alpha,beta,gamma频段的ERD/ERS值变化趋势。结果：通过对一段运动诱发脑磁图数据的分析,采用该方法得到的左、右运动皮层的ERD/ERS结果和文献中报道的结果相一致。结论：基于Morlet小波的事件相关脑磁图ERD/ERS分析方法能够有效分析事件诱发脑磁图的锁时但不锁相的变化。     

急性淋巴细胞白血病中T细胞受体δ基因Vδ2－Dδ3及Dδ2－Dδ3重排结合部顺序的研究

为了探讨中国人Ｔ细胞受体（ＴＣＲ）δ基因的Ｖ－Ｄ－Ｊ结合部顺序（Ｎ顺序）的组成，及其在急性淋巴细胞白血病（ＡＬＬ）患者中的重组规律，应用聚合酶链反应（ＰＣＲ）对４６例ＡＬＬ标本进行了ＴＣＲδ基因重排的研究，发现１６例患者出现Ｔ细胞受体δ基因不完全重排，其中１３例为Ｖδ２－（Ｄ）－Ｄδ３重排，３例为Ｖδ２－（Ｄ）－Ｄδ３合并Ｄδ２－Ｄδ３重排。进而应用ＤＮＡ直接测序技术，对这１６例ＡＬＬ标本ＴＣＲδ基因重排结合部进行了分析，证实由于Ｖδ２或Ｄδ２的３＇端和Ｄδ３的５＇端碱基缺失、部分Ｄδ１或Ｄδ２顺序存在、Ｎ顺序的插入以及未发生缺失的Ｖδ２，Ｄδ２或Ｄδ３编码顺序端Ｐ核昔酸的非随机插入，使得每例患者的结合部顺序均存在高度个体特异性。此外，对Ｎ顺序碱基成份的分析表明，其脱氧鸟嘌呤和脱氧胞嘧啶含量大于７０％，而脱氧腺嘌呤和脱氧胸腺嘧啶小于３０％，说明碱基插入并非完全随机。本文结果提示ＴＣＲδ基因重排是淋巴细胞发育中的一个早期事件，其结合部顺序的测定，可作为检测ＡＬＬ患者微小残留病变的特异性克隆标志。     

人眼虹膜组织力学特性的实验研究

利用我们创建的将瞳孔水密缝合后，模拟眼内前后房压强差，对虹膜整体进行加压的实验方法，对人眼虹膜的力学特性进行了实验研究。结果表明：人眼虹膜是典型的粘弹性物质；面积模量与前后房压强差之间基本成线性关系。实验结果可为青光眼致盲机制解释和瞳孔阻滞力的估算提供参考。     

hSav1蛋白高表达对Mst1介导的细胞凋亡的影响

Objective To elucidate the effect of hSavl expression on Mstl-mediated apoptosis in HeLa cells. Methods Plasmids pCMV-HA-hSav1 and pcDNA/4TO-Flag-Mst1 were constructed and cotransfected into HeLa cells. Triple immunofluorescent labeling of hSav1, Mst1 and nucleus was performed to determine their subcellular localization. Plasmids pCMV-HA-hSav1 and/or pcDNA/4TO-Flag-Mst1 were transfected into HeLa cells, and 36 hours later cisplatin (50 μmol/L) as a pro-apoptotic agent was added for 14 hours. Cell apoptosis was analyzed by annexin V/PI assay. Results Plasmids pCMV-HA-hSav1 and pcDNA/4TO-Flag-Mst1 were constructed and the authenticity of constructs was verified by sequencing. The binding in vitro showed that hSavl could be detect from the anti-Mstl immunoprecipitation complex. The immunofluorescent labeling showed that hSavl and Mstl had the same localization in cells. Overexpressed protein hSavl did not induce a significant cell apoptosis. However, co-expression of hSavl with Mstl resulted in a significant increase of apoptosis above the level seen with Mstl alone (24. 5% ± 2.4% vs. 39.3% ± 4.0%, P < 0. 05). Conclusion Our findings indicate that hSavl is a newly identified protein that interacts with Mst1 and a, augments Mst1-mediated apoptosis.     

红外测温仪测温影响因素分析

目的:分析距离、角度和测量部位等因素对红外测温仪测量结果的影响,提高防疫期间体温监测的准确性。方法:选取北京地区24名健康志愿者作为体温测量的受试者,采用两种常用国产品牌(A型和B型)红外测温仪,分别采集受试者不同测量距离(1~3 cm、3~5 cm和5~7 cm)、不同测量角度(额头正前垂直、向下倾斜45°)和不同测量部位(额头、内关)的体温测量数据,连续测量7 d,排除缺项后共纳入60组体温测量值数据。同时采用水银体温计测量受试者腋温行自身对照,分析比较不同角度、距离和部位的测量数据。结果:不同测温角度中红外测温仪于有效距离内"垂直"和"斜下"方向的额温,A型红外测温仪3~5 cm和B型红外测温仪1~3 cm垂直和斜下测量差异有统计学意义(Z=-2.62,Z=-4.37;P<0.05)。A型红外测温仪和B型红外测温仪垂直测额温距离皮肤1~3 cm、3~5 cm和5~7 cm测温结果比较,差异均有统计学意义(F=24.06,F=26.97;P<0.05)。A型红外测温仪距皮肤1~3 cm和3~5 cm测量内关温与额温比较,差异均有统计学意义(t=-4.99,t=-5.006;P<0.01);B型红外测温仪距皮肤1~3 cm测量内关温与额温比较,差异有统计学意义(t=-5.13,P<0.01)。结论:测温角度的改变会对测量产生影响,尤其在测量距离增加情况下。当超过有效测量距离时随着距离增加,测量数据准确性将会下降。相较于额温,正常体温人群的内关温更接近于腋温。     

hSav1蛋白高表达对Mst1介导的细胞凋亡的影响

Objective To elucidate the effect of hSavl expression on Mstl-mediated apoptosis in HeLa cells. Methods Plasmids pCMV-HA-hSav1 and pcDNA/4TO-Flag-Mst1 were constructed and cotransfected into HeLa cells. Triple immunofluorescent labeling of hSav1, Mst1 and nucleus was performed to determine their subcellular localization. Plasmids pCMV-HA-hSav1 and/or pcDNA/4TO-Flag-Mst1 were transfected into HeLa cells, and 36 hours later cisplatin (50 μmol/L) as a pro-apoptotic agent was added for 14 hours. Cell apoptosis was analyzed by annexin V/PI assay. Results Plasmids pCMV-HA-hSav1 and pcDNA/4TO-Flag-Mst1 were constructed and the authenticity of constructs was verified by sequencing. The binding in vitro showed that hSavl could be detect from the anti-Mstl immunoprecipitation complex. The immunofluorescent labeling showed that hSavl and Mstl had the same localization in cells. Overexpressed protein hSavl did not induce a significant cell apoptosis. However, co-expression of hSavl with Mstl resulted in a significant increase of apoptosis above the level seen with Mstl alone (24. 5% ± 2.4% vs. 39.3% ± 4.0%, P < 0. 05). Conclusion Our findings indicate that hSavl is a newly identified protein that interacts with Mst1 and a, augments Mst1-mediated apoptosis.     

快速与长期双期大动脉调转术在室间隔完整大动脉转位中应用的对比研究

目的通过比较快速和长期双期大动脉调转术(ASO)的组间特点,总结发生左室退化后室间隔完整大动脉转位(TGA-IVS)的手术治疗经验。方法纳入2007年1月至2019年1月主要诊断为TGA-IVS并行双期ASO的患儿41例,其中男25例、女16例,平均年龄17.9个月(7 d至7岁)。根据双期手术间隔时间,分为快速双期ASO组(19例)和长期双期ASO组(22例)。比较两组患儿临床效果。结果两组患儿的年龄、体重、ASO术前血氧饱和度、训练术前左室舒张期末内径、ASO术前左室后壁厚度差异均有统计学意义(P<0.05)。患儿年龄>1岁是进行长期双期ASO的独立危险因素。结论长期双期ASO对年龄>1岁和左心室退化严重的患儿具有良好的疗效。     

《伤寒杂病论》仲景腹诊学术特色探究

张仲景在《内经》腹诊基础上发展建立了仲景腹诊学术体系,将腹诊区域详细地划分为胸胁、胁下、心下、大腹、少腹、脐等部位,并将望、闻、问、切四诊综合运用于腹部的诊断,强调了腹诊的临床意义,将腹诊、腹证与病证、方药有机地联系起来,提出了根据腹诊腹证的结果判断疾病的病位病性、阐述疾病的病因病机、明确疾病的治法治则及禁忌以及判断疾...     

磷脂酰肌醇3-激酶调节亚基p55PIK表达载体的构建及单克隆株的筛选

目的 构建表达载体pEGFP-N1-p55PIK,在人胚胎肾细胞株HEK293中筛选其稳定表达的细胞株.方法 PCR扩增p55PIK基因全长,经过Xho1和Xma1酶切、T4 DNA连接酶连接、DH5α转化,酶切和测序鉴定以确定构建质粒正确.转染人胚胎肾细胞株HEK293,G418筛选稳定表达p55PIK的单克隆细胞株,应用Western blot方法检测p55PIK蛋白的表达.结果 pEGFP-N1-p55PIK质粒经PCR、酶切、测序鉴定正确,经过G418筛选后获得稳定细胞株,在荧光显微镜下可观察到绿色荧光蛋白在HEK293细胞中的表达,Western blot检测结果显示稳定转染pEGFP-N1-p55PIK的细胞中p55PIK表达水平增高.结论 正确构建表达载体pEGFP-N1-p55PIK,并在HEK293细胞中成功筛选出稳定表达p55PIK的细胞株,为进一步探讨p55PIK的功能提供了良好的工具.