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https://www.readbyqxmd.com/read/28168762/developing-a-new-nonbinary-snp-fluorescent-multiplex-detection-system-for-forensic-application-in-china
#1
Yanfang Liu, Huidan Liao, Ying Liu, Juanjuan Guo, Yi Sun, Xiaoliang Fu, Ding Xiao, Jifeng Cai, Lingmei Lan, Pingli Xie, Lagabaiyila Zha
Nonbinary single-nucleotide polymorphisms (SNPs) are potential forensic genetic markers because that their discrimination power is greater than that of normal binary SNPs, and that they can detect highly degraded samples. We previously developed a nonbinary SNP multiplex typing assay. In the present study, we selected additional 20 nonbinary SNPs from the NCBI SNP database and verified them through pyrosequencing. These 20 nonbinary SNPs were analyzed using the fluorescent-labeled SNaPshot multiplex SNP typing method...
February 6, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28164539/post-mortem-identification-of-a-fire-carbonized-body-by-str-genotyping
#2
Raluca Dumache, Camelia Muresan, Veronica Ciocan, Alexandru F Rogobete, Alexandra Enache
BACKGROUND: Identification of bodies of unknown identity that are victims of exposure to very high temperatures, resulting from fires, plane crashes, and terrorist attacks, represents one of the most difficult sides of forensic genetics, because of the advanced state of decomposition. The aim of this study was the identification of the carbonized cadaver of a fire victim through STR genotyping. METHODS: We used blood samples obtained from the iliac artery during the autopsy examination as biological samples from the unidentified victim...
October 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28101645/forensic-parameters-of-19-x-str-polymorphisms-in-two-chinese-populations
#3
Chuncao Deng, Feng Song, Jienan Li, Yi Ye, Lushun Zhang, Weibo Liang, Haibo Luo, Yingbi Li
Application of X-STRs as complements of autosomal STR application in the forensic genetics has become a tendency for kinship testing, especially in deficiency paternity cases. Recently, a novel kit of 19 X-STR loci was developed, which permitted the analysis of 19 STR in the same PCR reaction, and these markers can be clustered into seven groups for the physical linkage. The objective of this study was to evaluate the allele and haplotype diversity of 19 X-STR loci in the Uygur (n = 220) and Tibetan nationality (n = 270) and to estimate the usefulness for complex kinship analysis...
January 18, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28078776/performance-of-the-forenseq-tm-dna-signature-prep-kit-on-highly-degraded-samples
#4
Paolo Fattorini, Carlo Previderé, Ilaria Carboni, Giorgio Marrubini, Solange Sorçaburu-Cigliero, Pierangela Grignani, Barbara Bertoglio, Paolo Vatta, Ugo Ricci
Next generation sequencing (NGS) is the emerging technology in forensic genomics laboratories. It offers higher resolution to address most problems of human identification, greater efficiency and potential ability to interrogate very challenging forensic casework samples. In this study, a trial set of DNA samples was artificially degraded by progressive aqueous hydrolysis, and analyzed together with the corresponding unmodified DNA sample and control sample 2800 M, to test the performance and reliability of the ForenSeq(TM) DNA Signature Prep kit using the MiSeq Sequencer (Illumina)...
January 12, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28073088/characterization-of-the-iberian-y-chromosome-haplogroup-r-df27-in-northern-spain
#5
Patricia Villaescusa, María José Illescas, Laura Valverde, Miriam Baeta, Carolina Nuñez, Begoña Martínez-Jarreta, Maria Teresa Zarrabeitia, Francesc Calafell, Marian M de Pancorbo
The European paternal lineage R-DF27 has been proposed as a haplogroup of Iberian origin due to its maximum frequencies in the Iberian Peninsula. In this study, the distribution and structure of DF27 were characterized in 591 unrelated male individuals from four key populations of the north area of the Iberian Peninsula through the analysis of 12 Y-SNPs that define DF27 main sublineages. Additionally, Y-SNP allele frequencies were also gathered from the reference populations in the 1000 Genomes Project to compare and obtain a better landscape of the distribution of DF27...
December 29, 2016: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28012376/importance-sampling-allows-hd-true-tests-of-highly-discriminating-dna-profiles
#6
Duncan Taylor, James M Curran, John Buckleton
Hd true testing is a way of assessing the performance of a model, or DNA profile interpretation system. These tests involve simulating DNA profiles of non-donors to a DNA mixture and calculating a likelihood ratio (LR) with one proposition postulating their contribution and the alternative postulating their non-contribution. Following Turing it is possible to predict that "The average LR for the Hd true tests should be one"[1]. This suggests a way of validating softwares. During discussions on the ISFG software validation guidelines [2] it was argued by some that this prediction had not been sufficiently examined experimentally to serve as a criterion for validation...
December 9, 2016: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/27951431/developmental-validation-of-a-custom-panel-including-273-snps-for-forensic-application-using-ion-torrent-pgm
#7
Suhua Zhang, Yingnan Bian, Anqi Chen, Hancheng Zheng, Yuzhen Gao, Yiping Hou, Chengtao Li
Utilizing massively parallel sequencing (MPS) technology for SNP testing in forensic genetics is becoming attractive because of the shortcomings of STR markers, such as their high mutation rates and disadvantages associated with the current PCR-CE method as well as its limitations regarding multiplex capabilities. MPS offers the potential to genotype hundreds to thousands of SNPs from multiple samples in a single experimental run. In this study, we designed a customized SNP panel that includes 273 forensically relevant identity SNPs chosen from SNPforID, IISNP, and the HapMap database as well as previously related studies and evaluated the levels of genotyping precision, sequence coverage, sensitivity and SNP performance using the Ion Torrent PGM...
December 7, 2016: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/27890097/forensic-genetic-study-of-29-y-strs-in-korean-population
#8
Ju Yeon Jung, Ji-Hye Park, Yu-Li Oh, Han-Sol Kwon, Hyun-Chul Park, Kyung-Hwa Park, Eun Hye Kim, Dong-Sub Lee, Si-Keun Lim
In this study, we compared two recently released commercial Y-chromosomal short tandem repeat (Y-STR) kits: the PowerPlex Y23 System (PPY23) and Yfiler® Plus PCR amplification kit (YPlus). We performed validation studies, including sensitivity, tolerance to PCR inhibitors, and mixture analysis, and a population genetics study using 306 unrelated South Korean males. PPY23 and YPlus showed similar sensitivity, but PPY23 showed higher tolerance to humic acid than YPlus. Furthermore, the detection rate of unique minor alleles called from male/male mixtures was higher for PPY23 than for YPlus...
November 2016: Legal Medicine
https://www.readbyqxmd.com/read/27826995/molecular-diversity-of-23-y-chromosome-short-tandem-repeat-loci-in-the-population-of-tuzla-canton-bosnia-and-herzegovina
#9
Naida Babić, Serkan Dogan, Jasmina Čakar, Amela Pilav, Damir Marjanović, Vesna Hadžiavdić
BACKGROUND: Tuzla Canton is the most populated region in the ethnically mixed territory of Bosnia and Herzegovina, whose genetic analysis could provide an insight into past demographic events. AIM: Analysis of 23 Y-chromosome STR markers in the population of Tuzla Canton and investigation of the genetic relationship of the male population of the Tuzla Canton and that of the larger Bosnian and Herzegovinian population as well as neighbouring and other European populations...
November 30, 2016: Annals of Human Biology
https://www.readbyqxmd.com/read/27819737/human-autosomal-dna-and-x-chromosome-str-profiles-obtained-from-chrysomya-albiceps-diptera-calliphoridae-larvae-used-as-a-biological-trace
#10
T C Oliveira, A B R Santos, K C N Rabelo, C A Souza, S M Santos, S Crovella
The use of insects to answer questions in criminal investigations, as well as a combination of forensic genetic techniques to obtain human DNA from the organisms, especially necrophagous dipterians, have gained ground in recent decades among researchers and professionals in this area. The objective of our study was to evaluate and compare two methods of human DNA extraction, commonly used for forensic samples, to obtain human autosomal DNA and X chromosome short tandem repeat profiles from the digestive tract of Chrysomya albiceps (Diptera: Calliphoridae) larvae...
November 3, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27816849/a-collaborative-ednap-exercise-on-snapshot%C3%A2-based-mtdna-control-region-typing
#11
N E C Weiler, K Baca, D Ballard, F Balsa, M Bogus, C Børsting, F Brisighelli, J Červenáková, L Chaitanya, M Coble, V Decroyer, S Desmyter, K J van der Gaag, K Gettings, C Haas, J Heinrich, M João Porto, A J Kal, M Kayser, A Kúdelová, N Morling, A Mosquera-Miguel, F Noel, W Parson, V Pereira, C Phillips, P M Schneider, D Syndercombe Court, M Turanska, A Vidaki, P Woliński, L Zatkalíková, T Sijen
A collaborative European DNA Profiling (EDNAP) Group exercise was undertaken to assess the performance of an earlier described SNaPshot™-based screening assay (denoted mini-mtSNaPshot) (Weiler et al., 2016) [1] that targets 18 single nucleotide polymorphism (SNP) positions in the mitochondrial (mt) DNA control region and allows for discrimination of major European mtDNA haplogroups. Besides the organising laboratory, 14 forensic genetics laboratories were involved in the analysis of 13 samples, which were centrally prepared and thoroughly tested prior to shipment...
January 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/27796588/study-of-indel-genetic-markers-with-forensic-and-ancestry-informative-interest-in-palop-s-immigrant-populations-in-lisboa
#12
REVIEW
Ana Inácio, Heloísa Afonso Costa, Cláudia Vieira da Silva, Teresa Ribeiro, Maria João Porto, Jorge Costa Santos, Gilberto Igrejas, António Amorim
The migratory phenomenon in Portugal has become one of the main factors for the genetic variability. In the last few years, a new class of autosomal insertion/deletion markers-InDel-has attracted interest in forensic genetics. Since there is no data for InDel markers of Portuguese-speaking African countries (PALOP) immigrants living in Lisboa, our aim is the characterization of those groups of individuals by typing them with at least 30 InDel markers and to compare different groups of individuals/populations...
October 29, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27792894/seq-mapper-a-dna-sequence-searching-tool-for-massively-parallel-sequencing-data
#13
James Chun-I Lee, Bill Tseng, Liang-Kai Chang, Adrian Linacre
The development of massively parallel sequencing (MPS) has increased greatly the scale of DNA sequencing. The analysis of massive data-files from single MPS analysis can be a major challenge if examining the data for potential polymorphic loci. To aid in the analysis of both short tandem repeat (STR) and single nucleotide polymorphisms (SNP), we have designed a new program called SEQ Mapper to search for genetic polymorphisms within a large number of reads generated by MPS. This new program has been designed to perform sequence mapping between reference data and generated reads...
January 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/27766958/more-comprehensive-forensic-genetic-marker-analyses-for-accurate-human-remains-identification-using-massively-parallel-dna-sequencing
#14
Angie D Ambers, Jennifer D Churchill, Jonathan L King, Monika Stoljarova, Harrell Gill-King, Mourad Assidi, Muhammad Abu-Elmagd, Abdelbaset Buhmeida, Bruce Budowle
BACKGROUND: Although the primary objective of forensic DNA analyses of unidentified human remains is positive identification, cases involving historical or archaeological skeletal remains often lack reference samples for comparison. Massively parallel sequencing (MPS) offers an opportunity to provide biometric data in such cases, and these cases provide valuable data on the feasibility of applying MPS for characterization of modern forensic casework samples. In this study, MPS was used to characterize 140-year-old human skeletal remains discovered at a historical site in Deadwood, South Dakota, United States...
October 17, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27736937/outlining-the-ancestry-landscape-of-colombian-admixed-populations
#15
Humberto Ossa, Juliana Aquino, Rui Pereira, Adriana Ibarra, Rafael H Ossa, Luz Adriana Pérez, Juan David Granda, Maria Claudia Lattig, Helena Groot, Elizeu Fagundes de Carvalho, Leonor Gusmão
The ancestry of the Colombian population comprises a large number of well differentiated Native communities belonging to diverse linguistic groups. In the late fifteenth century, a process of admixture was initiated with the arrival of the Europeans, and several years later, Africans also became part of the Colombian population. Therefore, the genepool of the current Colombian population results from the admixture of Native Americans, Europeans and Africans. This admixture occurred differently in each region of the country, producing a clearly stratified population...
2016: PloS One
https://www.readbyqxmd.com/read/27696463/design-and-validation-of-an-str-hexaplex-assay-for-dna-profiling-of-grapevine-cultivars
#16
Jiří Drábek, Michaela Smolíková, Ruslan Kalendar, Fernando A Lopes Pinto, Pavel Pavloušek, Karel Klepárník, Ivo Frébort
Although the analysis of length polymorphism at STR loci has become a method of choice for grape cultivar identification, the standardization of methods for this purpose lags behind that of methods for DNA profiling in human and animal forensic genetics. The aim of this study was thus to design and validate a grapevine STR protocol with a practically useful level of multiplexing. Using free bioinformatics tools, published primer sequences, and nucleotide databases, we constructed and optimized a primer set for the simultaneous analysis of six STR loci (VVIi51, scu08vv, scu05vv, VVMD17, VrZAG47, and VrZAG83) by multiplex PCR and CE with laser-induced fluorescence, and tested it on 90 grape cultivars...
December 2016: Electrophoresis
https://www.readbyqxmd.com/read/27669340/polymorphism-of-12-str-loci-included-in-the-investigator-hd-plex-kit-in-polish-population-of-lodz-region
#17
R Wojtkiewicz, B Markiewicz, M Jędrzejczyk, R Jacewicz
In this study Polish population data as well as efficiency parameters of 12 STR loci included in the Investigator HDplex set were presented. This set contains 9 systems not available in any other commercial multiplexes, ie.: D2S1360, D3S1744, D4S2366, D5S2500, D6S474, D7S1517, D8S1132, D10S2325 and D21S2055. The evaluation was preformed based on DNA samples derived from 303 unrelated individuals living in Lodz region, central part of Poland. The obtained distribution of the genotypes is consistent with the assumptions of the Hardy and Weinberg equilibrium (HWE)...
2016: Archiwum Medycyny Sa̧dowej i Kryminologii
https://www.readbyqxmd.com/read/27643465/dna-commission-of-the-international-society-for-forensic-genetics-recommendations-on-the-validation-of-software-programs-performing-biostatistical-calculations-for-forensic-genetics-applications
#18
M D Coble, J Buckleton, J M Butler, T Egeland, R Fimmers, P Gill, L Gusmão, B Guttman, M Krawczak, N Morling, W Parson, N Pinto, P M Schneider, S T Sherry, S Willuweit, M Prinz
The use of biostatistical software programs to assist in data interpretation and calculate likelihood ratios is essential to forensic geneticists and part of the daily case work flow for both kinship and DNA identification laboratories. Previous recommendations issued by the DNA Commission of the International Society for Forensic Genetics (ISFG) covered the application of bio-statistical evaluations for STR typing results in identification and kinship cases, and this is now being expanded to provide best practices regarding validation and verification of the software required for these calculations...
September 4, 2016: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/27625209/high-throughput-sequencing-of-forensic-genetic-samples-using-punches-of-fta-cards-with-buccal-swabs
#19
Marie-Louise Kampmann, Anders Buchard, Claus Børsting, Niels Morling
Here, we demonstrate that punches from buccal swab samples preserved on FTA cards can be used for high-throughput DNA sequencing, also known as massively parallel sequencing (MPS). We typed 44 reference samples with the HID-Ion AmpliSeq Identity Panel using washed 1.2 mm punches from FTA cards with buccal swabs and compared the results with those obtained with DNA extracted using the EZ1 DNA Investigator Kit. Concordant profiles were obtained for all samples. Our protocol includes simple punch, wash, and PCR steps, reducing cost and hands-on time in the laboratory...
2016: BioTechniques
https://www.readbyqxmd.com/read/27623972/population-data-and-mutation-rates-of-19-str-loci-in-seven-provinces-from-china-based-on-goldeneye%C3%A2-dna-id-system-20a
#20
Qiu-Ling Liu, Ye-Fei Chen, Xiao-Ling Huang, Kai-Yan Liu, Hu Zhao, De-Jian Lu
Short tandem repeat (STR) analysis is a primary tool in forensic casework. Population data and mutation rates of STRs are very important for paternity testing and forensic genetics. However, the population data and mutation rates of STRs in Han nationality based on large samples have still not been fully described in China. In this study, the allelic frequencies, forensic parameters, and mutation rate of 19 STR loci (D19S433, D5S818, D21S11, D18S51, D6S1043, D3S1358, D13S317, D7S820, D16S539, CSFIPO, PentaD, vWA, D8S1179, TPOX, Penta E, TH01, D12S391, D2S1338, and FGA) based on the Goldeneye™ DNA ID System 20A in Southern China Han nationality among seven provinces were investigated...
September 13, 2016: International Journal of Legal Medicine
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