1
|
C Zapico S, Roca G. A spit in time: identification of saliva stains and assessment of total DNA recovery up to 180 days after deposition. Forensic Sci Med Pathol 2024; 20:552-559. [PMID: 37581750 DOI: 10.1007/s12024-023-00691-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2023] [Indexed: 08/16/2023]
Abstract
The main aim of this work was to validate the detection of saliva samples from denim, cotton, and polyester fabrics aged up to six months, applying rapid immunochromatographic tests resulting in the analysis of nuclear and mitochondrial DNA recovered. A comparison was also carried out between two saliva detection tests, Laboratory and Crime Scene. 50 μl saliva samples (three per time and test) were deposited on denim, cotton, and polyester fabrics. After 1, 3, 7, 14, 21, 30, 60, 90, 150, and 180 days of storage at room temperature, the samples were recovered by swabbing and detected by SERATEC® Amylase (Laboratory) test and SERATEC® SALIVA CS (Crime Scene) test (SERATEC®, Göttingen, Germany). DNA was isolated from the swab extraction buffer applying a silica-based methodology, and quantified based on fluorescent and human-specific quantifications. Then, it was submitted to STR profiling and mtDNA sequencing. According to our results, saliva stains up to six months after deposition remain valid specimens. The intensity of the bands varied among fabric type and time. Total DNA was successfully recovered from all tested samples, though with the limitations of obtaining partial nuclear DNA profiles from the oldest samples. In contrast, complete characterization of mtDNA was achieved from all samples. Lab and CS tests performed similar on the detection of saliva, as well as, DNA yield and profiling. Future research will be able to expand these results, analyzing the stability of other body fluids and the sensitivity of rapid immunochromatographic tests to detect them.
Collapse
Affiliation(s)
- Sara C Zapico
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, 161 Warren Street, Tiernan Hall, 365, Newark, New Jersey, 07102, USA.
- Smithsonian Institution, National Museum of Natural History, Anthropology Department, 10th and Constitution Ave, PO 37012, NW, 20560, Washington DC, USA.
| | - Gabriela Roca
- SERATEC®, Gesellschaft für Biotechnologie mbH. Ernst-Ruhstrat-Strasse 5, Göttingen, 37079, Germany
| |
Collapse
|
2
|
Ohta J, Minegishi S, Noda N, Sakurada K. Estimating the way of deposition of saliva stains using quantitative analysis of forensic salivary biomarkers. Leg Med (Tokyo) 2023; 64:102277. [PMID: 37300921 DOI: 10.1016/j.legalmed.2023.102277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/19/2023] [Accepted: 05/28/2023] [Indexed: 06/12/2023]
Abstract
Analyzing the way of deposition of saliva stains contributes to appropriate interpretation of saliva as evidence in court, particularly in sexual assault cases. In this proof-of-concept study, we aimed to confirm the difference between drooling-derived (non-contact) saliva and licking-derived (contact) saliva and clarify whether objectively distinguishing between the two saliva is possible. To allow discrimination between these two samples, an indicator was devised where the relative Streptococcus salivarius DNA quantity was calculated by dividing the S. salivarius DNA copies by the amount of stained saliva from the same saliva sample using quantitative polymerase chain reaction and salivary α-amylase activity assays. The study findings reveal that the value of the proposed indicator of licking-derived saliva was 100-fold significantly greater than that of drooling-derived saliva (P < 0.05, Welch's t-test). However, theoretical and technical challenges preclude the application of this indicator as a practical method. We believe that this saliva-specific bacterial DNA-based approach could allow estimation of the saliva stain deposition method.
Collapse
Affiliation(s)
- Jun Ohta
- Department of Forensic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan; Forensic Biology Unit, Scientific Crime Laboratory, Kanagawa Prefectural Police, 155-1 Yamashita-cho, Naka-ku, Yokohama, Kanagawa 231-0023, Japan.
| | - Saki Minegishi
- Department of Forensic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Nanaka Noda
- Forensic Biology Unit, Scientific Crime Laboratory, Kanagawa Prefectural Police, 155-1 Yamashita-cho, Naka-ku, Yokohama, Kanagawa 231-0023, Japan
| | - Koichi Sakurada
- Department of Forensic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| |
Collapse
|
3
|
Yazdanian M, Karami S, Tahmasebi E, Alam M, Abbasi K, Rahbar M, Tebyaniyan H, Ranjbar R, Seifalian A, Yazdanian A. Dental Radiographic/Digital Radiography Technology along with Biological Agents in Human Identification. SCANNING 2022; 2022:5265912. [PMID: 35116089 PMCID: PMC8789467 DOI: 10.1155/2022/5265912] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/08/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
The heavy casualties associated with mass disasters necessitate substantial resources to be managed. The unexpectedly violent nature of such occurrences usually remains a problematic amount of victims that urgently require to be identified by a reliable and economical method. Conventional identification methods are inefficient in many cases such as plane crashes and fire accidents that have damaged the macrobiometric features such as fingerprints or faces. An appropriate recognition method for such cases should use features more resistant to destruction. Forensic dentistry provides the most appropriate available method for the successful identification of victims using careful techniques and precise data interpretation. Since bones and teeth are the most persistent parts of the demolished bodies in sudden mass disasters, scanning and radiographs are unrepeatable parts of forensic dentistry. Forensic dentistry as a scientific method of human remain identification has been considerably referred to be efficient in disasters. Forensic dentistry can be used for either "sex and age estimation," "Medical biotechnology techniques," or "identification with dental records," etc. The present review is aimed at discussing the development and implementation of forensic dentistry methods for human identification. For this object, the literature from the last decade has been searched for the innovations in forensic dentistry for human identification based on the PubMed database.
Collapse
Affiliation(s)
- Mohsen Yazdanian
- Research Center for Prevention of Oral and Dental Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Shahryar Karami
- Department of Orthodontics, School of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Elahe Tahmasebi
- Research Center for Prevention of Oral and Dental Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mostafa Alam
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kamyar Abbasi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Rahbar
- Department of Restorative Dentistry, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hamid Tebyaniyan
- Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Reza Ranjbar
- Research Center for Prevention of Oral and Dental Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Alexander Seifalian
- Nanotechnology and Regenerative Medicine Commercialization Centre (Ltd), The London Bioscience Innovation Centre, London, UK
| | - Alireza Yazdanian
- Department of Veterinary, Science and Research Branch, Islamic Azad University, Tehran, Iran
| |
Collapse
|
4
|
Pérez-Ros P, Navarro-Flores E, Julián-Rochina I, Martínez-Arnau FM, Cauli O. Changes in Salivary Amylase and Glucose in Diabetes: A Scoping Review. Diagnostics (Basel) 2021; 11:diagnostics11030453. [PMID: 33800850 PMCID: PMC8001770 DOI: 10.3390/diagnostics11030453] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/11/2021] [Accepted: 03/03/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Diabetes mellitus (DM) is a common long-term disease which can be related with salivary amylase levels. DM has recently been associated with salivary amylase diagnostics that could further impair diagnoses in the diabetic population, as well as being an interesting alternative to traditional methods of determine glucose levels. The main advantage of this method is related to the fact that it is a fast diagnostic method. The DM population experiences changes to their metabolism which affects their salivary parameters, making this an alternative procedure for diagnosis and follow-up of the illness due to the non-invasive nature of salivary analyzes. The objective of this review is to summarize the evidence regarding the changes in salivary amylase and glucose levels, and their relationship with blood markers of glycemic control used in clinical settings such as blood glucose and glycated hemoglobin. The differences in salivary amylase levels depending on the method of saliva collection under fasting or non-fasting conditions. The changes in salivary amylase depends on the type of diabetes, the type of insulin treatment or the quality of glycemic control. CONCLUSIONS Salivary amylase concentration is increased in diabetic patients in most of the studies and salivary glucose concentration in all studies in both fasting and non-fasting (post-prandial) conditions. Salivary amylase and glucose concentration represent potential non-invasive biomarkers to evaluate glycemic control and clinical management of diabetic patients, although it is necessary to evaluate the influence of potential modulating factors such as age, duration diseases, sex and the effects of pharmacological treatments in these outcomes which remained to be elucidated.
Collapse
Affiliation(s)
- Pilar Pérez-Ros
- Frailty and Cognitive Impairment Research Group (FROG), University of Valencia, 46010 Valencia, Spain; (P.P.-R.); (E.N.-F.); (I.J.-R.); (F.M.M.-A.)
- Nursing Department, University of Valencia, 46010 Valencia, Spain
| | - Emmanuel Navarro-Flores
- Frailty and Cognitive Impairment Research Group (FROG), University of Valencia, 46010 Valencia, Spain; (P.P.-R.); (E.N.-F.); (I.J.-R.); (F.M.M.-A.)
- Nursing Department, University of Valencia, 46010 Valencia, Spain
| | - Ivan Julián-Rochina
- Frailty and Cognitive Impairment Research Group (FROG), University of Valencia, 46010 Valencia, Spain; (P.P.-R.); (E.N.-F.); (I.J.-R.); (F.M.M.-A.)
- Nursing Department, University of Valencia, 46010 Valencia, Spain
| | - Francisco Miguel Martínez-Arnau
- Frailty and Cognitive Impairment Research Group (FROG), University of Valencia, 46010 Valencia, Spain; (P.P.-R.); (E.N.-F.); (I.J.-R.); (F.M.M.-A.)
- Department of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Omar Cauli
- Frailty and Cognitive Impairment Research Group (FROG), University of Valencia, 46010 Valencia, Spain; (P.P.-R.); (E.N.-F.); (I.J.-R.); (F.M.M.-A.)
- Nursing Department, University of Valencia, 46010 Valencia, Spain
- Correspondence:
| |
Collapse
|
5
|
Ohta J, Sakurada K. Oral gram-positive bacterial DNA-based identification of saliva from highly degraded samples. Forensic Sci Int Genet 2019; 42:103-112. [DOI: 10.1016/j.fsigen.2019.06.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/17/2019] [Accepted: 06/22/2019] [Indexed: 12/29/2022]
|