益气健脾通便方对慢传输型便秘大鼠Cajal间质细胞及一氧化氮、一氧化氮合酶的影响

目的 通过观察益气健脾通便方对慢传输型便秘（slow transit constipation,STC）大鼠Cajal间质细胞（Cajal interstitial cells,ICC）和一氧化氮（nitric oxide, NO）、一氧化氮合酶（nitric oxide synthase,NOS）的影响,探讨其作用机制。方法 将60只SPF级雄性8周龄Wistar大鼠随机分为正常组,模型组,益气健脾通便方低、中、高剂量组和莫沙必利组,每组10只。采用“复方地芬诺酯灌胃法”复制STC大鼠模型。模型复制后,各组大鼠连续给药4周,观察每组大鼠的一般情况,测定粪便粒数、粪便含水率、肠道推进率和结肠组织ICC表达量及NO、NOS含量。结果 益气健脾通便方能改善大鼠的一般情况,提高大鼠的粪便粒数、粪便含水率和肠道推进率（P<0.05）,提高结肠组织ICC表达量（P<0.05）,减少神经递质NO、NOS的含量（P<0.05）。结论 STC的发病机制可能与ICC表达量降低及NO、NOS水平升高有关。     

蜂毒素诱导人T淋巴细胞白血病细胞株6T-CEM的凋亡作用

目的：探讨蜂毒素诱导人T淋巴细胞白血病细胞株6T－CEM的凋亡作用。方法：利用DNA断裂点标记法（TUNEL）、DNA凝胶电泳、活细胞拒染以及光镜方法研究6T－CEM细胞的凋亡。结果：5μg/ml蜂毒素作用4h及4μg/ml蜂毒素作用24h诱导6T－CEM出现明显的凋亡特征。结论：蜂毒素在杀伤6T－CEM的同时能明显诱导细胞凋亡。     

Loss of CD103~+ intestinal dendritic cells during colonic inflammation

AIM:To investigate possible differences in dendritic cells(DC)within intestinal tissue of mice before and after induction of colitis. METHODS:Mucosal DC derived from intestinal tissue,as well as from mesenteric lymph nodes and spleen,were analyzed by fluorescence activated cell sorting(FACS) analysis.Supernatants of these cells were analyzed for secretion of different pro-and anti-inflammatory cytokines. Immunohistochemistry and immunofluorescence were performed on cryosections of mucosal tissue derived fro...     

手机短信骚扰的法律思考

绝大部分手机用户都有被短信骚扰的经历,这种骚扰让人不堪忍受。短信骚扰属于违法行为,既违反了《消费者权益保护法》,也侵犯了公民的隐私权。为了保护手机用户的权益,应严格禁止群发短信广告,加强对个人资料的法律保护,明确短信骚扰的民事责任,理清举证责任。     

电针联合脂肪源性干细胞移植对大鼠脑缺血再灌注后血管生成的影响

［摘要］目的 探讨电针联合脂肪源性干细胞（adipose derived stem cell,ADSC）移植对大鼠缺血再灌注损伤后血管生成的影响。方法 将36只成年SD大鼠随机分为模型组、电针组、ADSC组、电针+ADSC组。大鼠大脑中动脉线栓法复制缺血再灌注模型,电针组取大椎穴和内关穴进行电针治疗。ADSC组尾静脉注射PKH26标记的ADSC细胞悬液,电针+ADSC组联合电针和ADSC移植治疗。缺血后7 d行神经功能损害评分（neurological severity scores,NSS）,采用Western bolt法检测血管内皮生长因子（vascular endothelial growth factor,VEGF）蛋白表达,实时荧光定量聚合酶链式反应检测血管VEGF mRNA表达,CD34免疫组织化学染色计数微血管密度（microvessel density,MVD）。结果 电针+ADSC组海马CA1区PKH26标记的细胞数高于ADSC组(P＜0.05)。与模型组比较,电针组、ADSC组和电针+ADSC组NSS评分均显著降低,海马CA1区VEGF蛋白和mRNA表达及MVD显著增加(P＜0.05)。其中电针+ADSC组较电针组和ADSC组NSS评分降低更为显著,海马CA1区VEGF蛋白和mRNA表达水平及MVD计数显著增高(P＜0.05)。结论 电针联合脂肪源性干细胞移植促进脑缺血再灌注大鼠神经功能恢复作用优于单独治疗组,其机制可能与电针促进血管生成,改善干细胞生存内环境,促进移植的ADSC迁移和存活有关。     

22例原发性输尿管癌的诊断分析

目的 提高输尿管癌的诊断水平.方法 回顾性分析1993年3月至2010年5月收治的22例原发性输尿管癌患者的临床资料.结果 临床表现血尿17例,腰痛10例,肾积水14例.阳性率较高的检查有逆行尿路造影、计算机断层扫描、磁共振成像和输尿管镜检查,阳性率分别为72.7%(8/11)、50%(9/18)、66.7%(4/6)...     

Android智能手机的取证

作为一种新兴的智能手机,Android手机发展势头极为迅猛,并越来越多的受到人们的关注。通过对Android智能手机的取证研究,在介绍了Android手机的基本工作原理后,详细描述了取证方式。通过Android SDK工具对手机内外置存储进行镜像备份,逻辑分析利用文件系统分析,查找每个应用程序自带的数据库文件来获得有价值信息,物理分析通过对内存镜像进行数据恢复以寻找删除的文件,两者互相结合。结果表明,能够从Android手机中有效寻找到潜在证据。     

单细胞分离荧光原位杂交法用于男女混合血DNA分型

目的采用单细胞分离荧光原位杂交法精确分离混合血样中男性和女性细胞并进行分型检验。方法收集男、女性血,按照男∶女为1∶5、1∶10、1∶20制备混合血样,加入0.075mol/L KCl 600μL,轻混、放置30min后加入150μL固定液离心留沉淀涂片,利用Vysis 30-161050试剂盒进行荧光原位杂交,并用PALM激光显微捕获系统分离出男、女性细胞,使用Identifiler试剂盒复合扩增并进行检测。结果捕获8个血细胞即可得到完整的DNA分型,且随着细胞数目的增多,检出率逐渐提高而等位基因丢失率逐渐降低。10个血细胞的检出率最高,为93.75%。5μL男性血液与本实验各比例女性血混合用本文方法检验均可获得男性分型。案例混合血斑经检验获得单一男性和女性分型。结论单细胞分离荧光原位杂交法可用于男女混合血样本中DNA分型检验。     

The Optimal Combination of Cartilage Source and Apparatus for Long‐Term In Vitro Chondrocyte Viability Analysis

Abstract: Most studies of long‐term chondrocytes survival were for tissue banks. They showed a gradual reduction in the viable chondrocytes percentage as a function of time and ambient temperature, but the samples were harvested under optimal conditions. The aim of our study was to determine the most reliable combination of cartilage source and assay for the in vitro postmortem chondrocyte viability analysis in the conditions that imitate a dead body. Osteochondral cylinders were procured from femoral condyles and talar trochleas of three male donors and stored in the cell culture media at 4 ± 2°C and 23 ± 2°C. The samples were analyzed by a cell viability analyzer and a confocal laser scanning microscope (CLSM) initially 24–36 h after death and then in 4‐week intervals. The results reconfirmed the significant influence of time (p = 0.0002), but not of the temperature (p = 0.237). The largest reproducibility was presented for the knee joint and the CLSM.     

Blood cyanide determination in two cases of fatal intoxication: comparison between headspace gas chromatography and a spectrophotometric method

Blood samples of two cases were analyzed preliminarily by a classical spectrophotometric method (VIS) and by an automated headspace gas chromatographic method with nitrogen-phosphorus detector (HS-GC/NPD). In the former, hydrogen cyanide (HCN) was quantitatively determined by measuring the absorbance of chromophores forming as a result of interaction with chloramine T. In the automated HS-GC/NPD method, blood was placed in a headspace vial, internal standard (acetonitrile) and acetic acid were then added. This resulted in cyanide being liberated as HCN. The spectrophotometric (VIS) and HS-GC/NPD methods were validated on postmortem blood samples fortified with potassium cyanide in the ranges 0.5-10 and 0.05-5 mug/mL, respectively. Detection limits were 0.2 mug/mL for VIS and 0.05 mug/mL for HS-GC/NPD. This work shows that results obtained by means of the two procedures were insignificantly different and that they compared favorably. They are suitable for rapid diagnosis of cyanide in postmortem cases.