DNA recovery after sequential processing of latent fingerprints on copy paper.
DNA profiling
fingermarks
fingerprint development
forensic analysis
latent fingerprints
touch DNA
Journal
Journal of forensic sciences
ISSN: 1556-4029
Titre abrégé: J Forensic Sci
Pays: United States
ID NLM: 0375370
Informations de publication
Date de publication:
Jan 2022
Jan 2022
Historique:
revised:
22
07
2021
received:
29
05
2021
accepted:
17
08
2021
pubmed:
10
9
2021
medline:
1
4
2022
entrez:
9
9
2021
Statut:
ppublish
Résumé
Forensic examiners must determine whether both latent fingerprint development and DNA profiling can be performed on the same area of an evidence item and, if only one is possible, which examination offers the best chance for identification. Latent fingerprints can be enhanced by targeting different components of fingerprint residues with sequential chemical treatments. This study investigated the effects of single-reagent and sequential latent fingerprint development processes on downstream DNA analysis to determine the point at which latent fingerprint development should be stopped to allow for DNA recovery. Latent fingerprints deposited on copy paper by one donor were developed using three sequential processes: 1,8-diazafluoren-9-one (DFO) → ninhydrin → physical developer (PD); 1,2-indanedione-zinc (IND-Zn) → ninhydrin → PD; and IND-Zn → ninhydrin → Oil Red O (ORO) → PD. Samples were examined after the addition of each chemical treatment. DNA was collected with cotton swabs, extracted, quantified, and amplified. DNA yields, peak heights, number of alleles obtained, and percentage of DNA profiles eligible for CODIS upload were examined. DNA profiles were obtained with varying degrees of success, depending on the number and type of treatments used for latent fingerprint development. The treatments that were found to be the least harmful to downstream DNA analysis were IND-Zn and IND-Zn/laser, and the most detrimental treatments were DFO, DFO/laser, and PD. In general, as the number of treatments increase, the opportunities for DNA loss or damage also increase, and it is preferable to use fewer treatments when developing latent fingerprints prior to downstream DNA processing.
Identifiants
pubmed: 34498754
doi: 10.1111/1556-4029.14881
pmc: PMC9291209
doi:
Substances chimiques
Indicators and Reagents
0
DNA
9007-49-2
Ninhydrin
HCL6S9K23A
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
149-160Subventions
Organisme : National Institute of Justice
ID : 2011-DN-BX-K564
Organisme : National Institute of Justice
ID : 2016-MU-BX-K110
Informations de copyright
© 2021 The Authors. Journal of Forensic Sciences published by Wiley Periodicals LLC on behalf of American Academy of Forensic Sciences.
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