大鼠急性心肌缺血后心肌NF-kB的检测及其法医学意义

目的检测大鼠急性心肌缺血后核因子-kB(NF-kB)在心肌组织内的变化,探讨其在心肌早期缺血死后诊断中的法医学意义。方法30只大鼠随机分为正常对照,缺血0.5h,1h,2h,4h,8h共6组,每组5只建立大鼠急性心肌缺血模型,用免疫组化染色技术(S-P法),观察不同时间缺血心肌中NF-kB阳性着色,并应用图像分析系统进行定量分析。结果大鼠心肌缺血30m in,心肌细胞核出现散在NF-kB阳性染色;缺血60m in,心肌阳性染色细胞核增多;4h达高峰;8h组开始下降;免疫组化染色定量检则的阳性单位:缺血2h、4h、8h分别为20.042±1.084、22.028±3.452和20.524±1.595;正常对照组未见核阳性反应。结论大鼠心肌缺血8h内,心肌细胞核NF-kB阳性染色呈现一定规律性变化,对早期急性心肌缺血的死后诊断具有法医学意义。     

口蹄疫病毒3B基因的高效表达及其表达产物的反应活性

通过PCR技术获得口蹄疫病毒非结构蛋白3B基因,将其克隆至质粒pET-32a( )和高效可溶性表达质粒pEM中,经PCR筛选,获得阳性重组子pET-3B和pEM-3B,将它们转化大肠杆菌BL21中进行诱导表达,SDS-PAGE及Western-blot检测结果证明,表达的3B融合蛋白能与FMDV感染动物血清发生特异性反应。蛋白可溶性分析表明,EM-3B融合蛋白绝大部分以可溶形式表达。以此可溶性融合蛋白EM-3B为抗原建立了可区分FMD免疫动物和感染动物的EM-3B-DIVA-ELISA方法,经检测,其特异性为95.0%,敏感性为97.5%,与2个国产试剂盒的符合率分别为96.25%和98.75%。     

黄牛感染人乙型肝炎病毒的研究

人乙型肝炎是危害人体健康的主要传染病。本试验在黄牛猝死症死亡牛的肝脏中,通过反向血凝试验及电镜观察,有6头牛的肝脏检出人乙型肝炎病毒。并对曾与阳性病死牛同槽饲养牛的20份血清检测,乙肝表面抗原阳性4份,e抗原阳性3份,表面抗原抗体阳性7份,抗e抗体阳性17份,抗核心抗体阳性9份。同槽饲养中感染率为85％。     

The Application of Voltammetric Analysis of Δ9‐THC for the Reduction of False Positive Results in the Analysis of Suspected Marijuana Plant Matter

The development of methodologies using inexpensive, fast, and reliable instrumention is desirable in illicit drug analysis. The purpose of this study was based on cyclic voltammetry technique to differentiate the electrochemical behavior of ?⁹‐THC, the psychoactive substance in marijuana, and five different extract plants to yield false positive results after analysis protocol for cannabinoids using thin‐layer chromatography and Fast Blue B salt. After applying a deposition potential of ?0.5 V in a glassy carbon working electrode, the results indicated an anodic peak current at 0.0 V versus Ag/AgCl after addition of ?⁹‐THC solution in the electrochemical cell, and limits of detection and quantification were 1.0 ng mL^?1 and 3.5 ng mL^?1, respectively. Other interfering plants showed distinct amperometric responses. This methodology was useful to detect ?⁹‐THC even in the presence of the Fast Blue B salt, which avoided false positive results for all the studied extract plants.     

Evaluation of Postmortem Cerebrospinal Fluid S100B Protein and Serotonin Levels: Comparison of Suicidal Versus Nonsuicidal Deaths in Konya,Turkey

Although suicide is a preventable public health problem, objective assays for suicide risk are limited. In this study, it was aimed to determine levels of S100B protein and serotonin as a marker for risk of suicide. S100B protein and serotonin levels were investigated with ELISA method in the cerebrospinal fluid (CSF) in medicolegal autopsy cases, including those of suicide cases (n = 32) and nonsuicide cases (n = 56). The CSF S100B levels were higher (9.3 ± 2.9 ng/mL vs. 5.4 ± 2.0 ng/mL), and serotonin levels were lower (10.4 ± 4.9 ng/mL vs. 19.0 ± 5.7 ng/mL) in suicide group than nonsuicide group (p < 0.05). There was no correlation between S100B protein and serotonin levels with gender, age groups, postmortem interval, and cause of death. It is concluded that both S100B protein and serotonin in CSF may be useful for determination of suicide risk.     

A case of mistaken identity: The wrongful classification of Islamic marriage contracts as premarital agreements in New York

New York precedent has mischaracterized Islamic marriage contracts, or nikah agreements, as premarital agreements. Nikah agreements are not premarital agreements; they are contracts. This mischaracterization has subjected nikah agreements to the acknowledgement requirement codified in N.Y. DRL § 236(B)(3) which has incorrectly been used to strike down valid contracts which Islamic litigants rely on. To prevent the effects of this mischaracterization, this Note suggests to New York appellate courts that a recharacterization of these agreements as contracts would prevent further confusion amongst the lower courts and allow for clearer, more uniform decisions.     

提单流转延误而引起的法律问题浅析

提单流转的延误已经成为提单最大的弊端 ,它引起了无单放货等一系列问题。本文逐个分析了国内外针对这类问题所采取的各种对策及其法律效力。     

GABA Receptors,Alcohol Dependence and Criminal Behavior

The aim of this study was to analyze the connection between alcohol dependence and criminal behavior by an integrated genetic–environmental approach. The research, structured as a case–control study, examined 186 alcohol‐dependent males; group 1 (N = 47 convicted subjects) was compared with group 2 (N = 139 no previous criminal records). Genetic results were innovative, highlighting differences in genotype distribution (p = 0.0067) in group 1 for single‐nucleotide polymorphism rs 3780428, located in the intronic region of subunit 2 of the GABA B receptor gene (GABBR2). Some environmental factors (e.g., grade repetition) were associated with criminal behavior; others (e.g., attendance at Alcoholics Anonymous) were inversely related to convictions. The concomitant presence of the genetic and environmental factors found to be associated with the condition of alcohol‐dependent inmate showed a 4‐fold increase in the risk of antisocial behavior. The results need to be replicated on a larger population to develop new preventive and therapeutic proposals.     

青壮年猝死综合征SCN2B、SCN4B基因检测

目的寻找SCN2B、SCN4B基因的变异位点,探讨其与青壮年不明原因夜间睡眠中猝死(SMDS)的关系。方法提取SMDS病例组及健康对照组的基因组DNA,采用聚合酶链式反应(PCR)方法扩增SCN2B、SCN4B基因编码区外显子、外显子-内含子交界区以及3'侧翼区序列,直接行DNA测序以明确遗传变异类型。结果在病例组中共检测到4个变异位点,c.237+27AG,c.*38CT,c.174CT(p.C58C)和c.*7CT。结论本研究首次对中国人SMDS病例进行了SCN2B、SCN4B基因的检测,上述基因是否为中国人SMDS的易感基因尚有待进一步研究证实。     

Der Haftrücklass im Bauträgervertrag

Das BMJ hat vor Kurzem den Begutachtungsentwurf für eine Novelle zum Bautr?gervertragsgesetz vorgelegt. Ein zentrales Regelungsanliegen des Entwurfs ist die Einführung eines zwingenden Haftrücklasses zur Sicherung allf?lliger Gew?hrleistungs- und Schadenersatzansprüche des Erwerbers auf Grund mangelhafter Leistung des Bautr?gers. Der vorliegende Beitrag setzt sich mit diesem Vorschlag kritisch auseinander.