Identification of skeletal remains of Communist Armed Forces victims during and after World War II: combined Y-chromosome (STR) and MiniSTR approach.

Croat Med J 2009 Jun;50(3):296-304

1Institute for Genetic Engineeringand Biotechnology, Gajev trg 4, Sarajevo, Bosnia and Herzegovina.

Aim: To report on the use of STR, Y-STRs, and miniSTRs typing methods in the identification of victims of revolutionary violence and crimes against humanity committed by the Communist Armed Forces during and after World War II in which bodies were exhumed from mass and individual graves in Slovenia.

Methods: Bone fragments and teeth were removed from human remains found in several small and closely located hidden mass graves in the Skofja Loka area (Lovrenska Grapa and Zolsce) and 2 individual graves in the Ljubljana area (Podlipoglav), Slovenia. DNA was isolated using the Qiagen DNA extraction procedure optimized for bone and teeth. Some DNA extracts required additional purification, such as N-buthanol treatment. The QuantifilerTM Human DNA Quantification Kit was used for DNA quantification. Initially, PowerPlex 16 kit was used to simultaneously analyze 15 short tandem repeat (STR) loci. The PowerPlex S5 miniSTR kit and AmpF/STR MiniFiler PCR Amplification Kit was used for additional analysis if preliminary analysis yielded weak partial or no profiles at all. In 2 cases, when the PowerPlex 16 profiles indicated possible relatedness of the remains with reference samples, but there were insufficient probabilities to call the match to possible male paternal relatives, we resorted to an additional analysis of Y-STR markers. PowerPlex Y System was used to simultaneously amplify 12 Y-STR loci. Fragment analysis was performed on an ABI PRISM 310 genetic analyzer. Matching probabilities were estimated using the DNA-View software.

Results: Following the Y-STR analysis, 1 of the "weak matches" previously obtained based on autosomal loci, was confirmed while the other 1 was not. Combined standard STR and miniSTR approach applied to bone samples from 2 individual graves resulted in positive identifications. Finally, using the same approach on 11 bone samples from hidden mass grave Zolosce, we were able to obtain 6 useful DNA profiles.

Conclusion: The results of this study, in combination with previously obtained results, demonstrate that Y-chromosome testing and mini-STR methodology can contribute to the identification of human remains of victims of revolutionary violence from World War II.

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http://link.springer.com/content/pdf/10.1007/s00414-010-0431
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2705010PMC
http://dx.doi.org/10.3325/cmj.2009.50.296DOI Listing
June 2009
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