Experience with the PCR-based HLA-DQα DNA typing system in routine forensic casework

Summary The results of HLA-DQ typing from 42 routine forensic cases using the polymerase chain reaction (PCR) were analyzed regarding the reliability, discrimination efficiency and informative value of this system in a given case. The cases included stain typing from a variety of different substrates, i.e. blood and semen stains, mixed body fluids, single hairs, cigarette butts, material from fingernail scratches, as well as identification and paternity cases on postmortem and fixed tissue. A total of 125 individual stain and tissue samples were included. PCR amplification was achieved in 70% of these samples. In cases with mixed body fluids, e.g. sperm and vaginal cells from rape cases, DQ typing was always carried out successfully. However, only approx. 42% of all samples that could be typed were relevant regarding the inclusion or exclusion of a suspect. This was mostly due to the limited number of alleles that can be typed at the HLA-DQ locus or to the fact that the stain or hair samples did not originate from the perpetrator, but from the victim or from other persons not related to the crime.     

24小时动态血压监测对中青年高血压病诊断探讨

目的：探讨２４ｈ动态血压监测（２４ｈＡＢＭＰ）对中青年正常血压及高血压分级的诊断参数以及２４ｈ血压波动规律的应用价值。方法：采用无创性携带式动态血压监测仪检测２０例正常中青年人及１７２例中青年高血压患的动态血压（ＡＢＰ）。根据ＷＨＯ／ＩＳＨ标准进行分级,１７２例中,高血压Ⅰ级５２例,Ⅱ级６０例,Ⅲ级６０例,将２４ｈＡＢＰＭ提供的血压参数进行统计学处理,并对血压波动规律进行分析。结果：正常血压组与     

Mir-200b抑制膀胱癌细胞T24的迁移

目的在膀胱癌细胞系中过表达mir-200b,观察其对T24细胞迁移能力的影响,并检测WASF-3表达水平的改变。方法将mir-200b mimic,WASF-3 siRNA及阴性对照分别转染T24细胞,通过qPCR及Western印迹实验检测WASF-3表达水平的改变;利用Transwell实验检测转染后T24细胞迁移能力的改变。结果转染mir-200b及WASF-3 siRNA后WASF-3在mRNA及蛋白水平上均有明显下降,同时细胞迁移能力亦有明显下降。结论mir-200b能够通过改变WASF-3的表达水平抑制膀胱癌细胞系T24的迁移能力,为进一步探索miRNA在膀胱癌发生发展过程中的作用提供了研究基础。     

Fatal intoxications in Denmark following intake of morphine from opium poppies

Summary In Denmark it is legal to grow opium poppies for the production of poppy seeds and until 1986 for decoration purposes, too. Danish poppy capsules contain 0.3–5 mg morphine per capsule and the content of morphine in opium exuded from the capsules may amount to 24%. This has resulted in misuse as both fresh and dried poppy capsules have been used for the production of opium tea. During the period 1982–1985, seven casualties occurred among drug addicts in Denmark which were solely or partly caused by these opium poppies.     

奥美拉唑治疗十二指肠球部溃疡24h胃内pH监测

用单晶体锑电极监测服药前后２４ｈ胃内ｐＨ变化，观察奥美拉唑对胃酸分泌的影响。在奥美拉唑服药５ｄ后ｐＨ明显升高（Ｐ〈０．０１），奥美拉唑晨间服药组使早８时￣晚８时的ｐＨ〉３的总时间和平均ｐＨ、中位ｐＨ明显高于晚间服药组（Ｐ〈０．０５），亦使晚８时￣早８时及２４ｈ各ｐＨ指标上升高于晚间服药组，但无统计学差异。十二指肠球部溃疡病人服药前ｐＨ密度分布呈左倾单峰形态，服奥美拉唑后呈双峰或右倾单峰形态。提示奥     

动脉血乳酸清除率与急性生理及慢性健康评分在感染性休克治疗中的预测价值

目的回顾性研究动脉血乳酸清除率与急性生理及慢性健康（APACHEⅡ）评分在感染性休克治疗中的预测价值。j芎法采集人住ICU的62例感染性休克患者治疗前动脉血乳酸,进行急性生理和慢性健康状况（APACHEⅡ）评分,计算24h动脉血乳酸清除率,并根据28d病程转归分为存活组和死亡组,比较两组间动脉血乳酸、24h动脉血乳酸清除率和APACHEⅡ的差异。结果动脉血乳酸水平存活组明显低于死亡组水平,差异有统计学意义（P〈0．01）;死亡组患者A—PACHEⅡ评分明显高于存活组,而24h动脉血乳酸清除率明显低于存活组,差异均有统计学意义（P〈0．01）。结论24h动脉血乳酸清除率结合APACHEⅡ评分系统进行综合判断可作为感染性休克评价疗效和预后的指标。     

Efficacy of 24-hour shifts: Prepared or impaired? A prospective study

BACKGROUND: The effect of duty duration on performances is unknown. In a prospective cohort study model using repeated measures, we evaluated the effect of shift length on a battery of neuropsychologic performance indicators using our flight program as the test site. METHODS: Flight nurses completing 24- and 12-hour shifts were tested on memory, attention, reasoning, motor, and speed measures. Ratings of stress, fatigue, sleep quality, and logged amount of work and sleep were evaluated from personal journals kept for this purpose. Data were analyzed by linear regression and repeated measures multivariate analysis of variance (MANOVA) and analysis of variance (ANOVA). Clinical significance was set at P < 0.05. RESULTS: Fifteen subjects completed the testing and evaluation process. Neuropsychologic testing demonstrated that performance was not predicted by shift length, time of shift (day versus night), amount or quality of sleep before or during shift, or fatigue ratings. Age, gender, and education did not mediate shift length/test performance relationships. Uninterrupted sleep, stress ratings, and number of flights per shift modestly reduced some test scores. Predictably, repeated testings resulted in practice effects that reduced analysis power. We found that 24-hour shifts per se do not result in a cognitive decline compared with 12-hour shifts. Inconsistent sleep, number of flights, and the stressfulness of flights may have greater impact.     

人免疫缺陷病毒HB-J株的分离和生物学特性研究

目的：分离和鉴定我国流行的人免疫缺陷病毒（ｈｕｍａｎ ｉｍｍｕｎｏｄｅｆｉｃｉｅｎｃｙ ｖｉｒｕｓ,ＨＩＶ）毒株,研究我国ＨＩＶ毒株的生物学特性。方法：周外用血单个核细胞（ｐｅｒｉｐｈｅｒａｌ ｂｌｏｏｄ ｍｏｎｏｎｕｃｌｅａｒ ｃｅｌｌｓ,ＰＢＭＣ）共培养的方法分离ＨＩＶ,用观察细胞病变、检测Ｐ２４抗原和前病毒ＤＮＡ的方法监测病毒生长的情况。结果：在建立共培养的第１２天观察到明显的细胞病变,主要表面为大泡样细胞和多核巨细胞。接种第９天细胞培养上清液的Ｐ２４抗原由阴性转为阳性,并且浓度迅速增加,接种第１２天浓度即达到１７８０ｐｇ／ｍｌ,第１４天达到峰值,为２３２０ｐｇ／ｍｌ。但该株病毒的ＰＢＭＣ培养上清液转种于ＭＴ４细胞后,培养上清液Ｐ２４抗原和前病毒ＤＮＡ始终为阴性且不出现细胞病变。结论：用ＰＢＭＣ共培养的方     

hTERT启动子特异驱动IL-24重组腺病毒的包装及鉴定

目的 包装并鉴定人端粒酶逆转录酶（hTERT）启动子特异驱动白介素-24（IL-24）的重组复制缺陷型腺病毒.方法 全基因合成优化后的hTERT启动子,插入质粒pGL3-basic的多克隆位点（pGL3-phTERT）;从人外周血单核细胞扩增IL-24,插入pGL3-phTERT质粒的hTERT启动子下游获得pGL3-phTERT-IL24;随后将phTERT-IL24插入pShuttle中间质粒,使用AdEasy^TM Adenoviral Vector System包装Ad-phTERT-IL24重组腺病毒;同时包装CMV启动子驱动IL-24的腺病毒载体为阴性对照（Ad-CMV-IL24）,以空载腺病毒Ad作为空白对照.用20 MOI重组腺病毒感染SGC-7901、MKN-45、HF细胞,采用PCR及Western blot检测IL-24在RNA及蛋白水平的表达.结果 成功包装Ad-hTERT-IL24重组腺病毒.感染Ad-hTERT-IL24后,hTERT阳性肿瘤细胞内IL-24表达显著上调,但hTERT阴性的HF细胞则无IL-24表达;感染阴性对照Ad-CMV-IL24后,hTERT阳性或阴性细胞内均有IL-24表达,感染空白对照Ad后,hTERT阳性或阴性细胞内均无IL-24表达.结论 Ad-hTERT-IL24腺病毒载体可有效介导IL-24特异表达于hTERT阳性肿瘤细胞内.