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51.
Mizuno N Kitayama T Fujii K Nakahara H Yoshida K Sekiguchi K Yonezawa N Nakano M Kasai K 《Journal of forensic sciences》2008,53(5):1068-1073
Short tandem repeat studies are powerful tools for parentage analysis and for identification of missing persons, victims of murder, and victims of mass fatalities when reference samples are unavailable. The primer in the Identifiler kit failed to amplify an allele at the D19S433 locus, producing a silent ("null") allele. The causal mutation is a base change (G>A) 32 nucleotides downstream from the 3' end of the AAGG repeats. The silent alleles are problematical in parentage analysis because when transmitted, they can cause a parent-child inconsistency that is unrelated to Mendelian genetics. The inconsistency is sometimes termed an "apparent opposite homozygosity" and it produces false evidence of nonparentage. Alternative primers were designed to amplify the D19S433 locus alleles and they detect the silent allele. Frequencies of the (no longer) silent allele were determined to be 0.0114 in 176 people from Shizuoka (Honshu) and 0.0128 in 156 people from Okinawa. 相似文献
52.
Mizuno N Nakahara H Sekiguchi K Yoshida K Nakano M Kasai K 《Forensic science international》2008,174(1):71-76
A total of 1079 Japanese males were typed for the following 16 Y chromosomal short tandem repeat (Y-STR) markers: DYS456, DYS389I, DYS390, DYS389II, DYS458, DYS19, DYS385, DYS393, DYS391, DYS439, DYS635, DYS392, Y GATA H4, DYS437, DYS438 and DYS448 using an AmpFlSTR(R) Yfiler PCR Amplification kit (Applied Biosystems). A total of 950 haplotypes for the 16 Y-STR markers were detected and, of these, 886 haplotypes were unique. The most frequent haplotype was found in 22 Japanese males. The haplotype diversity was 0.9992, indicating a high potential for differentiating between male individuals. There were 10 haplotypes with no allele detected at the DYS448 marker. Thus, the presence of such atypical haplotypes should be noted, when DNA typing results obtained from degraded DNA samples and/or DNA mixture samples from more than one male individual are being interpreted. 相似文献
53.
Nakazono T Kashimura S Hayashiba Y Hara K Miyoshi A 《Journal of forensic sciences》2005,50(4):860-864
To evaluate the utility of DNA polymorphism typing of urine stains in forensic investigations, the amplifiable amount of DNA was estimated in 20 urine specimens obtained from 10 male and 10 female volunteers using a DNA purification kit following dialfiltration. DNA obtained from both urine and urine stains was amplified with the AmpflSTR Profiler PCR Amplification Kit, and was analyzed by capillary electrophoresis using the Genetic Analyzer. The amount of male and female urine necessary for obtaining a complete DNA profile was 0.2 mL and 0.08 mL, respectively. When 0.2 mL of male urine were used to create urine stains, complete DNA profiles could be obtained from just some of the stains. However, when only 0.1 mL of female urine was used, complete profiles could be successfully obtained from all of the stains. DNA on bleached cotton remained amplifiable for 3-6 weeks. This method using a DNA purification kit following dialfiltration can be recommended for the genotyping of urine stains. 相似文献
54.
55.
M Morinaga K Hara M Kageura Y Hieda M Takamoto S Kashimura 《Zeitschrift für Rechtsmedizin》1990,103(8):567-572
A screening method for detecting volatile hydrocarbons in blood has been developed using gas chromatography/mass spectrometry with a wide-bore capillary column and a headspace method. Toluene-d8 and indan were used as the internal standards for quantitative analysis. Hydrocarbons with retention indices from 600 to 1200 were simultaneously and quantitatively detected in relatively low concentrations (0.01 microgram/ml) in reconstructed ion chromatography. This method could prove useful in forensic cases in which urgent examination of complex hydrocarbon mixtures, e.g. petroleum components, is required. 相似文献