Article ; Online: Forensic evaluation of mitochondrial DNA heteroplasmy in Gujarat population, India.
2022 Volume 49, Issue 7-8, Page(s) 332–341
Abstract: Background: Owing to its high copy number and its small size, mtDNA analysis is the most reliable choice when biological materials from crime scenes are degraded or have mixed STR profiles.: Aim: To examine the occurrence of heteroplasmy along with ... ...
| Abstract | Background: Owing to its high copy number and its small size, mtDNA analysis is the most reliable choice when biological materials from crime scenes are degraded or have mixed STR profiles. Aim: To examine the occurrence of heteroplasmy along with its frequency and pattern in both HV1 and HV2 regions of the mtDNA among unrelated individuals from India. Subjects and methods: Mitochondrial DNA control region [hypervariable region one (HV1) and hypervariable region two (HV2)] were analysed in blood and buccal tissues of 104 unrelated individuals from the Indian state of Gujarat. Results: A high frequency of point heteroplasmy (PH) and length heteroplasmy (LH) was revealed. PH was detected in 7.69% of the population, with a higher frequency observed in blood than in buccal samples. However, there were no statistically significant differences in PH between the two tissues (Chi-square = 0.552, Conclusions: Our findings suggest that differences in the pattern of heteroplasmy found in different tissues can complicate the forensic analysis, on the other hand, the probability of a match between the questioned and reference samples increases when the heteroplasmy is identical in both tissues. Variability of PH among persons and even within tissues recommends analysing multiple tissue samples before drawing a conclusion in forensic mtDNA analyses. |
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| MeSH term(s) | Humans ; DNA, Mitochondrial/genetics ; DNA, Mitochondrial/analysis ; Heteroplasmy ; India ; Sequence Analysis, DNA | |||||
| Chemical Substances | DNA, Mitochondrial | |||||
| Language | English | |||||
| Publishing date | 2022-11-18 | |||||
| Publishing country | England | |||||
| Document type | Journal Article | |||||
| ZDB-ID | 186656-4 | |||||
| ISSN | 1464-5033 ; 0301-4460 | |||||
| ISSN (online) | 1464-5033 | |||||
| ISSN | 0301-4460 | |||||
| DOI | 10.1080/03014460.2022.2144447 | |||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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