加味玉屏风散对鸡红细胞免疫和自由基的影响

将300只1日龄艾维茵雏鸡随机分为5组。Ⅰ组为加味玉屏风散(YPFP) 环磷酰胺(CY),Ⅱ组为左旋咪唑 CY,Ⅲ组为YPFP,Ⅳ组为CY,Ⅴ组为正常对照组。检测雏鸡红细胞免疫功能、全血GSH-Px活性、血浆SOD活性、血浆MDA浓度及体重。结果显示,YPFP能显著提高正常雏鸡RBC-CR1R,增强GSH-Px和SOD活性,降低血浆MDA的浓度,并能拮抗CY诱导的雏鸡RBC-CR1R降低、RBC-ICR升高、GSH-Px和SOD活性下降以及MDA浓度升高。相关研究发现,血浆SOD活性与RBC-CR1R呈正相关,与RBC-ICR呈负相关;而MDA浓度与RBC-CR1R呈负相关,与RBC-ICR呈正相关。试验证明,YPFP能明显增强雏鸡红细胞的免疫功能,提高雏鸡体内抗氧化酶活性,具有抗自由基损伤作用;YPFP能使雏鸡生长加快,体重增加。     

Developmental validation of the Microreader™ Y Prime Plus ID System: An advanced Y-STR 38-plex system for forensic applications

Y-STR is widely used in sexual assaults and familial searches of suspects. Here, we reported a novel 38-plex STR genotyping system designed for forensic applications. Microreader? Y Prime Plus ID System (YPP) amplifies 38 loci in one reaction, including 29 loci from commonly used Yfiler® Plus PCR Amplification Kit & PowerPlex® Y23 System (DYS393, DYS570, DYS19, DYS392, DYS549, Y GATA H4, DYS460, DYS458, DYS481, DYS635, DYS448, DYS533, DYS449, DYS456, DYS389I, DYS390, DYS389Ⅱ, DYS438, DYS391, DYS439, DYS437, DYS385a/b, DYS643, DYS518, DYS576, DYF387S1a/b, and DYS627), 6 commonly used loci for the Y-STR database (DYS444, DYS447, DYS596, DYF404a/b, DYS527a/b, DYS557) and one Y-indel specific for the Chinese population. YPP is designed for different types of samples, such as blood card and swabs. In this work, YPP was validated following SWGDAM guidelines (2016) and guidelines from Ministry of Public Security of the People’s Republic of China, including PCR-based, sensitivity, accuracy and precision, mixture, stability and inhibitor, and species specificity. The results indicate that the Microreader? Y Prime Plus ID System is a powerful identification kit designed for forensic databases.     

Typeability of AmpFlSTR SGM Plus loci in brain and thyroid gland tissue samples incubated in different environments

Autolysis and putrefaction are crucial factors responsible for degradation of cells, tissues, and organs. Postmortem changes may assume different course depending on extrinsic and intrinsic conditions. The aim of the study was assessment of environmental effect on typeability of AmpFlSTR SGM Plus loci: D3S1358, VWA, D16S539, D2S1338, D81179, D21S11, D18S51, D19S433, TH01, FGA, and gender marker amelogenin. Brain and thyroid gland tissue specimens collected during autopsies of five persons aged 20-30 years were incubated at 21 degrees C and 4 degrees C in different environmental conditions. DNA was extracted by organic method from tissue samples collected in 7-day intervals and subsequently typed using AmpFlSTR SGM Plus kit and ABI 310. A fast decrease in typeability rate was seen in specimens incubated in peat soil and in sand. Brain tissue samples were typeable in all AmpFlSTR SGM Plus loci within 126 days of incubation at 4 degrees C. Faster DNA degradation was recorded in thyroid gland specimens. In samples with negative genotyping results, no DNA was found by fluorometric quantitiation.     

Could Secondary DNA Transfer Falsely Place Someone at the Scene of a Crime?,

The occurrence of secondary DNA transfer has been previously established. However, the transfer of DNA through an intermediary has not been revisited with more sensitive current technologies implemented to increase the likelihood of obtaining results from low‐template/low‐quality samples. This study evaluated whether this increased sensitivity could lead to the detection of interpretable secondary DNA transfer profiles. After two minutes of hand to hand contact, participants immediately handled assigned knives. Swabbings of the knives with detectable amounts of DNA were amplified with the Identifiler^® Plus Amplification Kit and injected on a 3130xl. DNA typing results indicated that secondary DNA transfer was detected in 85% of the samples. In five samples, the secondary contributor was either the only contributor or the major contributor identified despite never coming into direct contact with the knife. This study demonstrates the risk of assuming that DNA recovered from an object resulted from direct contact.     

对Cofiler体系在亲子鉴定中应用价值的研究

将商品化 Profiler Plus和 Cofiler扩增检测试剂盒用于亲子鉴定案例和无关个体血样的分析。 186例亲子鉴定案中,母－子－假设父三联体 149例,假设父－子二联体 37例。在 149例含双亲和孩子的鉴定中,有 127例认定存在亲生血缘关系,其 RCP值平均为 99.98％;其余 22例排除了被检父为孩子生父,排除机率为 14.77％,排除指标平均为 6.1个。在 37例含单亲及孩子的鉴定中,有 23例认定存在亲生血缘关系,其 RCP值平均为 99.92％;其余 14例排除被检父为孩子生父,排除机率为 37.84％,平均有 5个不吻合的 STR位点出现。若特意省去三人组合案例中的母亲,将其作为单亲案件进行统计,仅检测 Profiler Plus体系的 9个 STR位点时,则 RCP值平均为 99.1959％,案例中 21.51％将不能得出明确的结论。同时检测 Profiler Plus和 Cofiler体系共 13个 STR位点,则案例中 97.31％能排除或认定生父,案例中 2.69％通过补充母亲样本能排除或认定生父。 Cofiler体系中 6个 STR位点的累积排除率达 0.9825。上述数据表明, Cofiler试剂盒在单亲鉴定案件中有着重要的应用价值。     

Profiler Plus系统在法医学DNA检验中的问题探讨

以Profiler Plus系统生产厂商提供的检验条件,在实际工作中对大规模样品进行了检验分析.结果显示该系统尚存在等位基因丢失、额外等位基因、同一荧光标记不同基因座等位基因重叠公布、罕见等位基因与亚型等非技术操作性问题.对有关样品应用Power Plex1.2,Power Plex16系统进行了检验验证.     

Detection and Identification of Psilocybe cubensis DNA Using a Real‐Time Polymerase Chain Reaction High Resolution Melt Assay,

Psilocybe cubensis, or “magic mushroom,” is the most common species of fungus with psychedelic characteristics. Two primer sets were designed to target Psilocybe DNA using web‐based software and NBCI gene sequences. DNA was extracted from eighteen samples, including twelve mushroom species, using the Qiagen DNeasy^® Plant Mini Kit. The DNA was amplified by the polymerase chain reaction (PCR) using the primers and a master mix containing either a SYBR^® Green I, Radiant? Green, or LCGreen Plus^® intercalating dye; amplicon size was determined using agarose gel electrophoresis. The PCR assays were tested for amplifiability, specificity, reproducibility, robustness, sensitivity, and multiplexing with primers that target marijuana. The observed high resolution melt (HRM) temperatures for primer sets 1 and 7 were 78.85 ± 0.31°C and 73.22 ± 0.61°C, respectively, using SYBR^® Green I dye and 81.67 ± 0.06°C and 76.04 ± 0.11°C, respectively, using Radiant? Green dye.     

Forensic genetic value of 27 Y-STR loci (Y-Filer® Plus) in the South African population

South Africa has one of the highest rape statistics in the world, with an average of 117 rapes reported daily. Y-STR genotyping is becoming a popular tool in the analysis of DNA evidence collected after a crime of a sexual nature has been committed, but has yet to be implemented in South Africa’s forensic laboratories. This study aimed to investigate the forensic value of the 27 Yfiler™ Plus loci in the South African population. A total of 271 samples from the African, Asian/Indian, Mixed Ancestry¹, and Caucasian populations at the University of the Free State in Bloemfontein, South Africa were amplified and analysed using ThermoFisher Scientific’s Yfiler™ Plus PCR Amplification kit. Of the 271 samples, 261 were identified to be unique, with an overall discrimination capacity of 98.15%. Discrimination capacities ranged from 91.67% for the Asian/Indian population to 100% for the Mixed Ancestry population. The haplotype diversity across the four populations is 0.9999, with an average gene diversity across all loci of 0.717. The forensic parameters estimated in this study provide evidence for the potential use of the commercial Yfiler™ Plus PCR amplification kit in a forensic application in South Africa.     

Simultaneous Identification of Four “Legal High” Plant Species in a Multiplex PCR High‐Resolution Melt Assay,

The international prevalence of “legal high” drugs necessitates the development of a method for their detection and identification. Herein, we describe the development and validation of a tetraplex multiplex real‐time polymerase chain reaction (PCR) assay used to simultaneously identify morning glory, jimson weed, Hawaiian woodrose, and marijuana detected by high‐resolution melt using LCGreen Plus^®. The PCR assay was evaluated based on the following: (i) specificity and selectivity—primers were tested on DNA extracted from 30 species and simulated forensic samples, (ii) sensitivity—serial dilutions of the target DNA were prepared, and (iii) reproducibility and reliability—sample replicates were tested and remelted on different days. The assay is ideal for cases in which inexpensive assays are needed to quickly detect and identify trace biological material present on drug paraphernalia that is too compromised for botanical microscopic identification and for which analysts are unfamiliar with the morphology of the emerging “legal high” species.     

Japan's ‘green’ economic diplomacy: environmental and energy technology and foreign relations

The principal regional organizations in East Asia and Asia-Pacific, ASEAN and APEC, are widely seen to be crisis-stricken, ‘becalmed’ or ‘adrift’. At the same time, East Asia is witnessing the emergence of a new, as yet embryonic body, ASEAN Plus Three (APT), and ambitious projects implying closer integration between Northeast and Southeast Asia are being mooted. Departing from an analysis of the determinants of the success and failure of regional integration, this article discusses the roots of the perceived decline of ASEAN and APEC and the origins of the rapid rise of APT. The Asian financial crisis in particular, it is argued, has been instrumental both in undermining ASEAN and APEC and in fostering the rise of APT. The crisis has brutally exposed the structural weaknesses of ASEAN and APEC, both of which are handicapped by the political and economic diversity of their member states and the absence of a benevolent dominant state or coalition of states. It has simultaneously fuelled the development of APT because it has greatly strengthened perceptions of mutual economic interdependence and vulnerability in East Asia and resentment against the West and the US. As APT is likely to exhibit similar structural weaknesses to ASEAN and APEC, the odds, however, are against it developing into a strong regional organization, notwithstanding the possibility that, in the near future, external forces and trends (stagnation of world trade liberalization, closer European and American integration) will, if anything, encourage plans for closer East Asian integration.