Allelic variation at ACTBP2 microsatellite for two Indian tribal groups

POPULATION: Two tribal populations, Bison Horn Maria ( N =49) and Muria ( N =52) from Bastar district in Central India.     

Population data at two short tandem repeat loci D2S1338 and D19S433 in the sample of multinational Bosnia and Herzegovina residents

POPULATION: We have analyzed the distribution of allele frequencies at two short tandem repeats loci (D2S1338 and D19S433) in a multinational sample of Bosnia and Herzegovina (B&H) residents. A total of 110 unrelated male and female individuals (Caucasians) from different regions of B&H were sampled for the analysis. We ensured that the sample reflected approximate proportional participation of the three main ethnic groups in the population of B&H (Bosniacs-Muslim [45%], Serbs [34%], Croats [21%]).     

Genetic analysis of 15 STR loci of Chinese Ewenki ethnic population

POPULATION: Almost all the Ewenki are found in HulunBuir Ewenki Autonomous Banner, Inner Mongolia province of China. Some Ewenki are nomads; others are farmers or farmer-hunters. A small number of them are hunters. Its national characters and languages belong to the Altai phylum.     

Genetic analysis of six STR polymorphisms in a southern Chinese population

POPULATION: A total of 105 unrelated and healthy individuals from the Han ethnic group of Nanning city in south China.     

成都地区汉族人群D2S441位点的遗传多态性研究

为研究 STR位点 D2S441的遗传多态性,为法医学应用提供基础数据,应用 PCR及 PAG电泳技术对 260名成都地区汉族无关个体进行了调查,共检出 9个等位基因及 26种基因型,首次获得汉族群体频率分布 ,其等位基因片段大小范围为 131～ 155bp。该位点基因型频率分布符合 Hardy－ Weinberg平衡。家系调查证实了等位基因的传递遵循孟德尔遗传规律。其个人识别能力（ Dp）、杂合度（ H）、多态性信息含量（ PIC）和非父排除率（ PE）分别为 0.9084、 0.7885、 0.7390和 0.5778,表明该位点在法医学个人识别及亲子鉴定中具有较高的实用价值。     

猪链球菌2型溶血素基因的检测及其序列分析

根据猪链球菌 2型的溶血素基因合成了一对可扩增长度为 14 96bp目的片段的引物 ,建立了检测溶血素基因的PCR方法。该方法对猪链球菌 2型参考株SS2 N株的检测结果为阳性 ,对马链球菌兽疫亚种 (C群 )参考株ATCC3 5 2 46、分离株SESZ Y、SESZ T、SESZ C和猪葡萄球菌、大肠埃希氏菌的检测结果均为阴性 ;用EcoRⅠ内切酶进行酶切 ,获得了与预期结果一致的 863bp和 63 3bp的 2个片段。经对SS2 1株的PCR产物进行测序及序列分析 ,表明其与 193 3株、P1/ 7株的核苷酸同源性分别为 99.7%和 10 0 %。     

The expression of excitatory amino acid transporter 2 in traumatic brain injury

It is well recognized that glutamate is the major excitatory neurotransmitter, which is removed from the synaptic cleft by excitatory amino acid transporter 2 (EAAT2) located on the perisynaptic astrocytes and that neuronal death has been associated with an increased extracellular glutamate concentration. In this study, we have immunohistochemically demonstrated the expression of EAAT2 protein in the human brain after traumatic brain injury (TBI). The EAAT2 expression patterns can be divided into three types: continuous and highly extensive staining (E); continuous but sporadic staining (M); and sporadic pattern staining (S). In six of the nine short survival cases studied (1 h to 1 day), continuous and highly extensive staining for EAAT2 (E type) was observed in the ipsilateral cerebral cortex. On the other hand, we were able to demonstrate weak staining (S and M types) in 5 of the 7 long survival cases (≥1 day) and in 12 of the 14 very short survival cases (<1 h) studied. Similar findings were obtained in the contralateral cerebral cortex and also in the ipsilateral hippocampus. In addition, positive staining for glial fibrillary acidic protein was detected around the cerebral contusion, but the EAAT2-positive expression was not observed in the same region for all of the six short and long survival cases (≥1 h) after TBI. These findings clearly showed the differences in EAAT2 expression in the cerebral cortex according to the survival time and severity of cerebral contusion after TBI. Therefore, we emphasized that EAAT2 might play an important role in contributing to extracellular glutamate concentrations and secondary brain injury after TBI.     

高效液相色谱法测定人血清中安眠酮及其苯甲基羟化代谢物的浓度

本文建立了用反相高效液相色谱法(RP-HPLC)测定人血清中安眠酮及其苯甲基羟化代谢物-2-甲基-3[2-(羟甲基)-苯基]-4(3H)喹唑酮(Ⅰ)的浓度。安眠酮浓度在1-35μg/ml范围内呈直线相关(相关系数r=0.9980;回归方程y=0.06324x—0.1029),方法回收率平均为102.08±9.987(SD)％(n=5),检出限为1ng。其代谢物Ⅰ按原型安眠酮的线性浓度测定其相对量。本法为测定中毒者体内安眠酮及其代谢物Ⅰ的血浓度提供可行的手段。     

Detection of mustard gas bis(2-chloroethyl)-sulfide in urine

Extraction procedure and detection of bis(2-chloroethyl)sulfide from urine samples of two patients are described using gas chromatography-mass spectrometry. Concentrations are found in the low ppb-range. The result is discussed in connection with the reactivity of this substance and the corresponding metabolites.