Application of the Iscan method to two- and three-dimensional imaging of the sternal end of the right fourth rib

Age determination is a major field of interest in physical and forensic anthropology. Among the different methods based on macroscopic skeletal study, the Iscan method, which analyzes the sternal end of the right fourth rib, is one of the most reliable. We applied the Iscan method to two- and three-dimensional multislice computed tomography (MSCT) reconstructions of the sternal end of the right fourth rib on 39 ribs. The intra-observer variability on MSCT reconstructions was good (gamma coefficient equal to 0.86; value of the Krippendorff's alpha reliability equal to 0.79); inter-observer variability on MSCT reconstructions was also good (gamma coefficient ranging from 0.82 to 0.88; value of the Krippendorff's alpha reliability ranging from 0.78 to 0.86). We demonstrated excellent agreement between the results of analysis of bone samples and those of the two- and three-dimensional images, in particular regarding bone projections, morphology of the pit and of its rim. The accuracy of age estimation did not significantly differ between the Iscan method applied to dry bones and the same method applied to MSCT images. Determination of the Krippendorff's alpha reliability coefficient for the inter-error method confirmed the agreement between phase estimations obtained with the two methods (ranging from 0.55 to 0.71). The real civil age was comprised in 21 cases out of 36 for assessment performed on dry bones and in 23 cases out of 36 on MSCT reconstructions, which represented 58.3% and 63.9%, respectively. Use of MSCT reconstructions in forensic anthropology offers many advantages: no bone preparation, no damage to bone material, and the possibility of application to living individuals.     

Morphometric criteria for sexing juvenile human skeletons using the ilium

Previous attempts to sex juvenile skeletons have focused on the application of qualitative or semi-quantitative techniques. This study applies a variety of geometric morphometric methods, including eigenshape analysis, to this problem. Six metric criteria for the ilia were tested with the aim of investigating previous ideas concerning sexually diagnostic characters. This study uses 25 ilia from juveniles of known age and sex from Christ Church, Spitalfields, London. Ninety-six percent of juvenile ilia were correctly identified as male or female using the shape of the greater sciatic notch. Identification accuracy is shown to improve with age for several criteria. Males were identified to a higher accuracy than females. Application of geometric techniques improves the understanding of the relationship between age, sex, and shape and the clarity with which these relationships can be quantified. Archaeological and forensic relevance of the results are discussed with recommendations for future application.     

人皮肤组织刺、切创后IL-8表达的免疫组织化学研究

为探讨人皮肤刺、切创后白细胞介素 8(interleukin 8,IL 8)在推断皮肤损伤时间中的应用价值 ,本研究应用免疫组化技术对 5 2例不同损伤时间人体皮肤刺、切创组织中IL 8的表达进行了研究。伤后 4h的损伤皮肤组织中可见部分的多核粒细胞表达IL 8。伤后 12～ 2 4h ,大部分浸润的多核粒细胞及部分单核细胞为IL 8阳性。随伤后时间延长 ,IL 8阳性细胞以单核及成纤维细胞为主。伤后 4～ 6h的皮肤中 ,IL 8阳性细胞比率较低 ,为 16 0±10 1%。伤后 1～ 4d达高峰 ,为 5 9 6± 8 7%。其后逐渐减少。本研究结果表明 ,IL 8的表达可用于皮肤刺、切创后损伤时间的推断。     

一种用于降解DNA样本的性别鉴定方法

目的　建立一种采用PCR技术对降解DNA样本进行性别鉴定的新方法。　方法　采用针对amelogenin基因X染色体外显子 3bp缺失设计的引物AMELU1及AMELD1,对在室温环境下放置 5～ 15年的男、女血痕标本各 5 0例、毛发各 2 0例、骨骼各 2 0例以及现场提取 5 - - 2 0天的男、女腐败肌肉各 10例标本中提取的降解DNA样本进行扩增。用PAG( 9%T ,3 %C)电泳、银染显带检测扩增产物。　结果　所有样本均得到正确结果 ,男性检材表现为 83bp的Y特异性及 80bp的X特异性 2条谱带 ,而女性检材仅有 1条 80bp的X特异性谱带。　结论　用针对amelogenin基因X染色体外显子 3bp缺失设计的引物AMELU1及AMELD1鉴定性别的方法灵敏、可靠、方便 ,是降解DNA检材性别鉴定十分理想的方法。     

地方立法立项机制的历史考察及其启示

地方立法立项机制就是指立法建议项目由有关主体提议产生,经享有立法规划(计划)编制权的主体在协调有关各方的基础上,结合本地实际情况博弈论证后,决定其是否列入地方立法规划(计划)的带有规律性的运行模式。它具有立项主体的特定性、立项过程的协调性、立项实施的指导性三个特征;其发展可以划分为五个发展阶段。地方立法立项机制今后还将长期存在,我们可以从十个方面进一步对其进行完善。     

破碎胫骨的性别判别分析研究

本文对135例(男69,女66)国人成年胫骨进行了12项测量。统计检验表明所有项目都具有非常显著的性别差异。按照判定破碎胫骨性别的需要,采用逐步判别分析和Fisher方法建立了17项判定破碎胫骨性别的判别函数。判别率为79.3～84.4％。本研究表明胫骨上端宽、下端宽和滋养孔处骨干周长具有最重要的性别鉴定价值,其单项判别率为79.3％～80.2％。     

毛细管电泳在毒品检验中的应用

毛细管电泳因其自身特性而适用于毒品检测。本文重点对毛细管电泳的五种模式在毒品检验中的应用进行了综述和比较 ,包括各自检测方法的应用范围、优点和局限。     

X染色体与性别鉴定

综述了X染色体的遗传学特性 ,采用细胞学、分子生物学方法等方法检测X染色体鉴定性别的原理、方法、利弊 ,并展望了X染色体应用前景和相关技术的发展。     

姜不同炮制品对苓甘五味姜辛汤4种成分含量的影响

目的 探明姜不同炮制品对苓甘五味姜辛汤指标成分含量的影响。方法 分别用生姜、干姜、炮姜配伍成苓甘五味（生）姜辛汤、苓甘五味（干）姜辛汤、苓甘五味（炮）姜辛汤各10批,采用超高效液相色谱法对其进行含量测定分析。色谱条件：Acquity BEH C18(2.1 mm×100 m,1.7 μm)色谱柱;流动相为乙腈-0.1%磷酸,梯度洗脱,流速0.2 mL/min;柱温30 ℃;检测波长280 nm。结果 姜不同炮制品组成的苓甘五味姜辛汤中甘草苷、甘草酸铵、6-姜酚、五味子醇甲4种成分的线性关系良好,相关系数均大于0.999 8;4种成分的平均加样回收率分别为98.01%、99.78%、96.69%和98.36%,RSD分别为2.15%、2.47%、2.79%和2.34%。结论 姜的不同炮制品对苓甘五味姜辛汤成分含量有不同程度的影响。     

UHPLC-MS/MS同时测定黄芩清热除痹胶囊中6种活性成分

目的 建立超高效液相色谱-串联质谱同时测定黄芩清热除痹胶囊中6种成分（黄芩苷、栀子苷、木犀草素、齐墩果酸、薏苡素、苦杏仁苷）含量的方法。方法 采用Phenomenex Luna Omega C18色谱柱（100 mm×2.1 mm,1.6 μm）,以含10 mmol/L甲酸铵的0.1%甲酸水溶液（A）-0.1%甲酸的乙腈（B）为流动相,进行梯度洗脱,柱温为30 ℃,流速为0.25 mL/min,进样量5 μL,分析时间10 min。采用电喷雾离子源,以多反应监测模式在负离子条件下进行检测。结果 所测6种活性成分在测定浓度范围内线性关系良好（r≥0.999 0）,精密度、稳定性和重复性良好,平均加样回收率为98.62%~103.7%,RSD≤2.70%。结论 该方法准确度高、分析速度快、检测限低、重复性高,适用于黄芩清热除痹胶囊质量控制。