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Steuer AE, Wartmann Y, Schellenberg R, Mantinieks D, Glowacki LL, Gerostamoulos D, Kraemer T, Brockbals L. Postmortem metabolomics: influence of time since death on the level of endogenous compounds in human femoral blood. Necessary to be considered in metabolome study planning? Metabolomics 2024; 20:51. [PMID: 38722380 PMCID: PMC11081988 DOI: 10.1007/s11306-024-02117-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 04/20/2024] [Indexed: 05/12/2024]
Abstract
INTRODUCTION The (un)targeted analysis of endogenous compounds has gained interest in the field of forensic postmortem investigations. The blood metabolome is influenced by many factors, and postmortem specimens are considered particularly challenging due to unpredictable decomposition processes. OBJECTIVES This study aimed to systematically investigate the influence of the time since death on endogenous compounds and its relevance in designing postmortem metabolome studies. METHODS Femoral blood samples of 427 authentic postmortem cases, were collected at two time points after death (854 samples in total; t1: admission to the institute, 1.3-290 h; t2: autopsy, 11-478 h; median ∆t = 71 h). All samples were analyzed using an untargeted metabolome approach, and peak areas were determined for 38 compounds (acylcarnitines, amino acids, phospholipids, and others). Differences between t2 and t1 were assessed by Wilcoxon signed-ranked test (p < 0.05). Moreover, all samples (n = 854) were binned into time groups (6 h, 12 h, or 24 h intervals) and compared by Kruskal-Wallis/Dunn's multiple comparison tests (p < 0.05 each) to investigate the effect of the estimated time since death. RESULTS Except for serine, threonine, and PC 34:1, all tested analytes revealed statistically significant changes between t1 and t2 (highest median increase 166%). Unpaired analysis of all 854 blood samples in-between groups indicated similar results. Significant differences were typically observed between blood samples collected within the first and later than 48 h after death, respectively. CONCLUSIONS To improve the consistency of comprehensive data evaluation in postmortem metabolome studies, it seems advisable to only include specimens collected within the first 2 days after death.
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Affiliation(s)
- Andrea E Steuer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, 8057, Zurich, Switzerland.
| | - Yannick Wartmann
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, 8057, Zurich, Switzerland
| | - Rena Schellenberg
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, 8057, Zurich, Switzerland
| | - Dylan Mantinieks
- Department of Forensic Medicine, Monash University, Victoria, Australia
- Victorian Institute of Forensic Medicine, Victoria, Australia
| | | | - Dimitri Gerostamoulos
- Department of Forensic Medicine, Monash University, Victoria, Australia
- Victorian Institute of Forensic Medicine, Victoria, Australia
| | - Thomas Kraemer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, 8057, Zurich, Switzerland
| | - Lana Brockbals
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, 8057, Zurich, Switzerland
- Centre for Forensic Science, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, Australia
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Franzin M, Ruoso R, Concato M, Radaelli D, D’Errico S, Addobbati R. Applicability of a Chemiluminescence Immunoassay to Screen Postmortem Bile Specimens and Its Agreement with Confirmation Analysis. Int J Mol Sci 2024; 25:3825. [PMID: 38612632 PMCID: PMC11011420 DOI: 10.3390/ijms25073825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/21/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Bile has emerged as an alternative matrix for toxicological investigation of drugs in suspected forensic cases of overdose in adults and intoxications in children. Toxicological investigation consists in screening and, subsequently, confirming the result with specific techniques, such as liquid chromatography with tandem mass spectrometry (LC-MS/MS). As there is no screening test on the market to test postmortem bile specimens, the novelty of this study was in investigating the applicability of a chemiluminescence immunoassay, designed for other matrices and available on the market, on bile and validate its use, testing the agreement with LC-MS/MS analysis. Bile specimens were obtained from 25 forensic cases of suspected death from overdose and intoxication. Sample preparation for bile screening consists simply in centrifugation and dilution. Confirmation analysis allows simultaneous identification of 108 drugs and was validated on bile. Kappa analysis assessed a perfect agreement (0.81-1) between the assays for benzodiazepines, methadone, opiates, cocaine, oxycodone, cannabinoids, buprenorphine and pregabalin; a substantial agreement (0.41-0.6) was reported for barbiturates. No agreement was assessed for amphetamines, due to an abundance of putrefactive amines in postmortem specimens. In conclusion, this fast and easy immunoassay could be used for initial screening of bile specimens, identifying presence of drugs, except amphetamines, with reliability.
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Affiliation(s)
- Martina Franzin
- Institute for Maternal and Child Health, IRCCS “Burlo Garofolo”, Via dell’Istria 65/1, 34137 Trieste, Italy; (M.F.); (R.R.)
| | - Rachele Ruoso
- Institute for Maternal and Child Health, IRCCS “Burlo Garofolo”, Via dell’Istria 65/1, 34137 Trieste, Italy; (M.F.); (R.R.)
| | - Monica Concato
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.C.); (D.R.); (S.D.)
| | - Davide Radaelli
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.C.); (D.R.); (S.D.)
| | - Stefano D’Errico
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.C.); (D.R.); (S.D.)
- Department of Forensic Medicine, Azienda Sanitaria Universitaria Giuliano Isontina, 34149 Trieste, Italy
| | - Riccardo Addobbati
- Institute for Maternal and Child Health, IRCCS “Burlo Garofolo”, Via dell’Istria 65/1, 34137 Trieste, Italy; (M.F.); (R.R.)
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3
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Franzin M, Ruoso R, Peruch M, Stocco G, D'Errico S, Addobbati R. Quantification of 108 illicit drugs and metabolites in bile matrix by LC-MS/MS for the toxicological testing of sudden death cases. Arch Toxicol 2024; 98:135-149. [PMID: 38051366 PMCID: PMC10761401 DOI: 10.1007/s00204-023-03631-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/07/2023] [Indexed: 12/07/2023]
Abstract
Sudden death could occur after assumption of illicit drugs for recreational purposes in adults or after intoxication in children, and toxicological testing would help identify the cause of the death. Analytical methods sensitive and specific for the quantification of a great number of drugs and metabolites in at least 2 matrices should be used. Bile, collected postmortem, may be considered a specimen alternative to blood and urine to perform toxicological testing because of its extended detection window. The present study proposed a LC-MS/MS method to quantify 108 drugs and metabolites in bile. Compounds belonging to the drugs of abuse classes of amphetamines, benzodiazepines, cocaine derivatives, barbiturates, opioids, z-drugs, and psychedelics were analyzed. The sample preparation is simple and does not require solid-phase extraction. The proposed method showed an appropriate selectivity, specificity, accuracy, and precision of the calibrators and quality controls tested (precision < 15%; accuracy < 100 ± 15%). The sensitivity allowed to identify low amounts of drugs (e.g., morphine limit of detection = 0.2 µg/L; limit of quantification = 1.1 µg/L). There is no significant matrix effect, except for buprenorphine and 11-Nor-9-carboxy-Δ9-tetrahydrocannabinol. Carry-over was not present. Analytes were stable at least for 1 month at - 20 °C. Analyzing 13 postmortem specimens, methadone (50%), and cocaine (37.5%) resulted to be the most prevalent consumed substances; the concentrations quantified in bile resulted to be higher than the ones in blood suggesting bile as a potential new matrix for identifying illicit drugs and their metabolites.
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Affiliation(s)
- Martina Franzin
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
| | - Rachele Ruoso
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
| | - Michela Peruch
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Gabriele Stocco
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Stefano D'Errico
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
- Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
| | - Riccardo Addobbati
- Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy.
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4
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Yang H, Liu C, Zhu C, Zheng Y, Li J, Zhu Q, Wang H, Fang X, Liu Q, Liang M, Liu Z. Determination of ten antipsychotics in blood, hair and nails: Validation of a LC-MS/MS method and forensic application of keratinized matrix analysis. J Pharm Biomed Anal 2023; 234:115557. [PMID: 37406464 DOI: 10.1016/j.jpba.2023.115557] [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] [Received: 04/18/2023] [Revised: 06/02/2023] [Accepted: 06/27/2023] [Indexed: 07/07/2023]
Abstract
Determination of antipsychotics from biological samples is meaningful in the field of clinical and forensic medicine. Compared to blood, keratinized matrices such as hair and nails have attracted increasing attention in drug analysis for wider detection window. Nevertheless, the distribution and stability of antipsychotics in keratinized matrices are not clarified yet. Therefore, we developed a LC-MS/MS based method for simultaneous determination of 10 antipsychotics from blood, hair and nails, with high recovery (78.1-107.4%, 71.3-93.5% and 75.2-90.5%), low LOD (5-10 pg/mL, 5-10 pg/mg and 5 pg/mg) and high accuracy (96.0%-101.6%, 97.5%-102.5% and 97.6-101.7%). The method was applied to sets of blood, hair, and nail samples of 54 patients who received long-term therapy, and significant correlations between drug concentrations in blood and hair was found, while the correlation between nails and other matrices varied depending on the drug. Except for olanzapine, the concentrations of antipsychotics in segmental hair samples were consistent with drug exposure. Besides, the hair and nail samples of suspects in two forensic cases were analyzed and provided supporting evidence for the suspects' psychiatric state. Our research offered a deeper understanding of keratinized matrix as stable and retrospective bio-samples for antipsychotics detection in forensic practice.
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Affiliation(s)
- Huanhuan Yang
- Department of Forensic Medicine, Huazhong University of Science and Technology, 430000 Wuhan, China
| | - Cong Liu
- Department of Forensic Medicine, Huazhong University of Science and Technology, 430000 Wuhan, China
| | - Chuanhong Zhu
- Criminal Investigation Bureau, Wuhan Public Security Bureau, 430000 Wuhan, China
| | - Yan Zheng
- Criminal Investigation Bureau, Wuhan Public Security Bureau, 430000 Wuhan, China
| | - Juan Li
- Criminal Investigation Bureau, Wuhan Public Security Bureau, 430000 Wuhan, China
| | | | - Hao Wang
- Wuhan YouFu Hospital, 430000 Wuhan, China
| | | | - Quan Liu
- Hubei Key Laboratory of Forensic Science, Hubei University of Police, 430000 Wuhan, China
| | - Man Liang
- Department of Forensic Medicine, Huazhong University of Science and Technology, 430000 Wuhan, China.
| | - Zilong Liu
- Department of Forensic Medicine, Huazhong University of Science and Technology, 430000 Wuhan, China.
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5
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Analytical Strategy. Forensic Toxicol 2022. [DOI: 10.1016/b978-0-12-819286-3.00009-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Ferrari Júnior E, Dos Santos JBA, Caldas ED. Drugs, pesticides and metabolites in forensic post-mortem blood samples. MEDICINE, SCIENCE, AND THE LAW 2021; 61:97-104. [PMID: 33081562 DOI: 10.1177/0025802420965006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Forensic post-mortem toxicological data provide valuable information for the elucidation of cause of death. However, this is still not routine practice in Brazilian laboratories. This study investigated the presence of illicit and prescription drugs, pesticides and metabolites in 111 post-mortem blood samples from cases investigated by the Forensic Medical Institute of the Federal District, Brazil. Quantitative analysis was performed for 14 analytes using a validated programmed temperature vaporisation-large volume injection-gas chromatography-mass spectrometry method, which was also used as screening (qualitative analysis) for an additional 19 substances of forensic interest. At least one analyte was found in 61.2% of the samples, of which 34 were related to homicide, 15 to accidental death and 10 to suicide cases. The victims were 14-72 years old. The benzodiazepines diazepam, midazolam and 7-aminoflunitrazepan were detected in 46% of the positive samples (0.02-1.12 µg/mL; midazolam only qualitative). Cocaine was found in 34% (0.02-4.07 µg/mL), associated with substances commonly used as cocaine adulterants (e.g. caffeine, lidocaine and phenacetin). Three suicide cases involved the illegal rodenticide chumbinho, residues of which were found in the gastric content, and blood samples showed the presence of terbufos (0.03 and 0.04 µg/mL) and carbofuran (27.3 µg/mL). These results are discussed, along with autopsy and crime-scene information.
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Affiliation(s)
- Ettore Ferrari Júnior
- Forensic Analysis Laboratory, Criminalistics Institute, Brazil
- Laboratory of Toxicology, Department of Pharmacy, University of Brasilia, Brazil
| | | | - Eloisa Dutra Caldas
- Laboratory of Toxicology, Department of Pharmacy, University of Brasilia, Brazil
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7
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Abstract
The hyphenation of Ultra-Performance Liquid performance (UPLC) with mass spectrometry
(MS) has emerged as a powerful tool in analytical research due to its advanced sensitivity,
resolution and speed. Its advanced instrumentation, specialized columns, separation at ultra-high
pressure and sophisticated software are the distinguishing features as compared to the traditional
separating techniques. It has a wide range of applications in various fields such as analysis of food
stuffs, drug metabolites, beverages, toxicology, soil samples and micronutrient analysis. In the present
compilation, authors have highlighted the applicability of UPLC-MS in the analysis of food stuffs and
drug metabolites along with the various optimized analytical conditions and obtained results.
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Affiliation(s)
- Ankit Semwal
- Department of Pharmaceutical Analysis, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga 142001, India
| | - Raghav Dogra
- Department of Pharmaceutical Analysis, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga 142001, India
| | - Kritika Verma
- Department of Pharmaceutical Analysis, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga 142001, India
| | - Rohit Bhatia
- Department of Pharmaceutical Analysis, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga 142001, India
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8
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Cobo-Golpe M, de-Castro-Ríos A, Cruz A, Páramo M, López-Rivadulla M, Lendoiro E. Determination of antipsychotic drugs in nails and hair by liquid chromatography tandem mass spectrometry and evaluation of their incorporation into keratinized matrices. J Pharm Biomed Anal 2020; 189:113443. [DOI: 10.1016/j.jpba.2020.113443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 12/21/2022]
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9
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Wong ASY, Choi TLS, Kwok KY, Wong JKY, Wan TSM, Ho ENM. Doping control analysis of antipsychotics and other prohibited substances in equine plasma by liquid chromatography/tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1147:122132. [PMID: 32417678 DOI: 10.1016/j.jchromb.2020.122132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 01/06/2023]
Abstract
Antipsychotics are banned substances and considered by the Fédération Equestrian Internationale (FEI) to have no legitimate use in equine medicine and/or have a high potential for abuse. These substances are also prohibited in horseracing according to Article 6 of the International Agreement on Breeding, Racing and Wagering (published by the International Federation of Horseracing Authorities). Over the years, antipsychotics have been abused or misused in equestrian sports and horseracing. A recent review of literature shows that there is yet a comprehensive screening method for antipsychotics in equine samples. This paper describes an efficient liquid chromatography/tandem mass spectrometry (LC/MS/MS) method for the simultaneous detection of over 80 antipsychotics and other prohibited substances at sub-parts-per-billion (ppb) to low-ppb levels in equine plasma after solid-phase extraction (SPE).
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Affiliation(s)
- April S Y Wong
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China.
| | - Timmy L S Choi
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China
| | - Karen Y Kwok
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China
| | - Jenny K Y Wong
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China
| | - Terence S M Wan
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China
| | - Emmie N M Ho
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China.
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10
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Kakehashi H, Shima N, Ishikawa A, Nitta A, Asai R, Wada M, Nakano S, Matsuta S, Sasaki K, Kamata H, Kamata T, Nishioka H, Miki A, Katagi M. Effects of lipophilicity and functional groups of synthetic cannabinoids on their blood concentrations and urinary excretion. Forensic Sci Int 2019; 307:110106. [PMID: 31902661 DOI: 10.1016/j.forsciint.2019.110106] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 11/28/2019] [Accepted: 12/01/2019] [Indexed: 01/16/2023]
Abstract
The influence of lipophilicity and functional groups of synthetic cannabinoids (SCs) on their blood concentrations and urinary excretion has been studied by analyzing blood and urine specimens sampled from drivers who were involved in a car crashes under the influence of SCs. A total of 58 specimens (26 urine and 31 blood specimens), sampled within 13h of the occurrence, were analyzed by liquid chromatography-tandem mass spectrometry. Fifteen SCs were detected in those specimens; the SCs detected were categorized as follows: Class 1, Naphthoyl/Benzoyl indole (EAM2201 and three other analogs); Class 2, Indole-3-carboxylate/carboxamide containing naphthol/quinol (5F-PB-22 and four other analogs); and Class 3, Indazole-3-carboxamide containing valine/tert-leucine derivative (5F-AMB and five other analogs). The calculated lipophilicity index log P, the octanol/water participation coefficient, of those SCs in Classes 1, 2, and 3 ranged between 5.01-8.14, 5.80-6.74 and 2.29-3.81, respectively. Class 3 SCs were detectable in 12 out of 13 urine specimens, but those in Classes 1 and 2 were not detected in urine. Our analytical results indicated that the boundary line for their detectability in urine lies between log P 4 and 5. The blood concentrations of Class 3 SCs varied widely (0.0036-31ng/ml) depending on their log P, while much smaller variation was observed among those in Class 2 (0.10-5.0ng/ml).
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Affiliation(s)
- Hidenao Kakehashi
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan.
| | - Noriaki Shima
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Akari Ishikawa
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Atsushi Nitta
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Ryutaro Asai
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Misato Wada
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Shihoko Nakano
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Shuntaro Matsuta
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Keiko Sasaki
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Hiroe Kamata
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Tooru Kamata
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Hiroshi Nishioka
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Akihiro Miki
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
| | - Munehiro Katagi
- Forensic Science Laboratory, Osaka Prefectural Police Headquarters, 1-3-18 Hommachi, Chuo-ku, Osaka 541-0053, Japan
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11
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New strategy for carbon monoxide poisoning diagnosis: Carboxyhemoglobin (COHb) vs Total Blood Carbon Monoxide (TBCO). Forensic Sci Int 2019; 306:110063. [PMID: 31790891 DOI: 10.1016/j.forsciint.2019.110063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/04/2019] [Accepted: 11/13/2019] [Indexed: 11/21/2022]
Abstract
Diagnosis of carbon monoxide (CO) poisonings has always been a challenging task due to the susceptibility to alterations of the optical state and degradation of blood samples during sampling, transport and storage, which highly affects the analysis with spectrophotometric methods. Methodological improvements are then required urgently because of increased reports of cases with discrepancies between results of the measured biomarker carboxyhemoglobin (COHb) and reported symptoms. Total blood CO (TBCO) measured chromatographically was thus proposed in a previous study as alternative biomarker to COHb. This approach was investigated in this study by comparing the two biomarkers and assessing the effects of various storage parameters (temperature, preservative, time, tube headspace (HS) volume, initial saturation level, freeze- and thaw- and reopening-cycles) over a period of one month. Results show that while for TBCO, concentrations are relatively stable over the observation period regardless of parameters such as temperature, time and HS volume, for COHb, concentrations are altered significantly during storage. Therefore, the use of TBCO as alternative biomarker for CO poisonings has been proposed, since it provides more valid results and is more stable even under non-optimal storage conditions. Additionally, it can be used to predict COHb in cases where sample degradation hinders optical measurement. Furthermore, a correction formula for COHb and TBCO is provided to be used in laboratories or circumstances where optimal storage or analysis is not possible, to obtain more accurate results.
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12
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Majda A, Wietecha-Posłuszny R, Świądro M, Mrochem K, Kościelniak P. Dried blood spots sampling in case samples deprived of hematocrit level information - Investigation and calculation strategy. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1124:308-312. [PMID: 31265992 DOI: 10.1016/j.jchromb.2019.06.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/19/2019] [Accepted: 06/21/2019] [Indexed: 11/19/2022]
Abstract
The application of a new calculation strategy for the psychotropic drug concentration in blood and bone marrow samples in the form of dried blood spots (DBS) was the main aim of the study. The standard DBS method consists of the deposition of the capillary blood onto the dedicated paper cards. Nowadays, the DBS technique is seen as a fast and partly superior microsampling alternative methodology replacing the conventional venous blood and plasma collection. The calculation approach to drug concentration in the limited volume of the case sample, where the hematocrit level cannot be determined, constitutes an important step of this method. The method has been validated and the results of the determination of alprazolam and diazepam previously spiked in the post-mortem blood and bone marrow sample have been satisfactory.
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Affiliation(s)
- Alicja Majda
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Renata Wietecha-Posłuszny
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland.
| | - Magdalena Świądro
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Karolina Mrochem
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Paweł Kościelniak
- Laboratory for Forensic Chemistry, Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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13
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Steuer AE, Brockbals L, Kraemer T. Metabolomic Strategies in Biomarker Research-New Approach for Indirect Identification of Drug Consumption and Sample Manipulation in Clinical and Forensic Toxicology? Front Chem 2019; 7:319. [PMID: 31134189 PMCID: PMC6523029 DOI: 10.3389/fchem.2019.00319] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/23/2019] [Indexed: 11/13/2022] Open
Abstract
Drug of abuse (DOA) consumption is a growing problem worldwide, particularly with increasing numbers of new psychoactive substances (NPS) entering the drug market. Generally, little information on their adverse effects and toxicity are available. The direct detection and identification of NPS is an analytical challenge due to their ephemerality on the drug scene. An approach that does not directly focus on the structural detection of an analyte or its metabolites, would be beneficial for this complex analytical scenario and the development of alternative screening methods could help to provide fast response on suspected NPS consumption. A metabolomics approach might represent such an alternative strategy for the identification of biomarkers for different questions in DOA testing. Metabolomics is the monitoring of changes in small (endogenous) molecules (<1,000 Da) in response to a certain stimulus, e.g., DOA consumption. For this review, a literature search targeting "metabolomics" and different DOAs or NPS was conducted. Thereby, different applications of metabolomic strategies in biomarker research for DOA identification were identified: (a) as an additional tool for metabolism studies bearing the major advantage that particularly a priori unknown or unexpected metabolites can be identified; and (b) for identification of endogenous biomarker or metabolite patterns, e.g., for synthetic cannabinoids or also to indirectly detect urine manipulation attempts by chemical adulteration or replacement with artificial urine samples. The majority of the currently available literature in that field, however, deals with metabolomic studies for DOAs to better assess their acute or chronic effects or to find biomarkers for drug addiction and tolerance. Certain changes in endogenous compounds are detected for all studied DOAs, but often similar compounds/pathways are influenced. When evaluating these studies with regard to possible biomarkers for drug consumption, the observed changes appear, albeit statistically significant, too small to reliably work as biomarker for drug consumption. Further, different drugs were shown to affect the same pathways. In conclusion, metabolomic approaches possess potential for detection of biomarkers indicating drug consumption. More studies, including more sensitive targeted analyses, multi-variant statistical models or deep-learning approaches are needed to fully explore the potential of omics science in DOA testing.
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Affiliation(s)
- Andrea E Steuer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Lana Brockbals
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Thomas Kraemer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
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Fagiola M. Current and future directions of high resolution and tandem mass spectrometry in postmortem and human performance toxicology. Leg Med (Tokyo) 2019; 37:86-94. [PMID: 30797132 DOI: 10.1016/j.legalmed.2019.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 12/09/2018] [Accepted: 02/15/2019] [Indexed: 11/17/2022]
Affiliation(s)
- Michael Fagiola
- Nassau County Medical Examiner - Department of Forensic Toxicology, 2251 Hempstead Turnpike - Building R, East Meadow, NY 11554, United States.
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15
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Peters FT, Steuer AE. Antemortem and postmortem influences on drug concentrations and metabolite patterns in postmortem specimens. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/wfs2.1297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Frank T. Peters
- Institute of Forensic Medicine Jena University Hospital Jena Germany
| | - Andrea E. Steuer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine University of Zurich Zurich Switzerland
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16
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Busardò FP, Jones AW. Interpreting γ-hydroxybutyrate concentrations for clinical and forensic purposes. Clin Toxicol (Phila) 2018; 57:149-163. [PMID: 30307336 DOI: 10.1080/15563650.2018.1519194] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
INTRODUCTION γ-Hydroxybutyric acid is an endogenous substance, a therapeutic agent, and a recreational drug of abuse. This psychoactive substance acts as a depressant of the central nervous system and is commonly encountered in clinical and forensic practice, including impaired drivers, poisoned patients, and drug-related intoxication deaths. OBJECTIVE The aim of this review is to assist clinical and forensic practitioners with the interpretation of γ-hydroxybutyric acid concentrations in blood, urine, and alternative biological specimens from living and deceased persons. METHODS The information sources used to prepare this review were PubMed, Scopus, and Web-of-Science. These databases were searched using keywords γ-hydroxybutyrate (GHB), blood, urine, alternative specimens, non-conventional biological matrices, saliva, oral fluid, sweat, hair, vitreous humor (VH), brain, cerebrospinal fluid (CSF), dried blood spots (DBS), breast milk, and various combinations thereof. The resulting 4228 references were screened to exclude duplicates, which left 1980 articles for further consideration. These publications were carefully evaluated by taking into account the main aims of the review and 143 scientific papers were considered relevant. Analytical methods: The analytical methods used to determine γ-hydroxybutyric acid in blood and other biological specimens make use of gas- or liquid-chromatography coupled to mass spectrometry. These hyphenated techniques are accurate, precise, and specific for their intended purposes and the lower limit of quantitation in blood and other specimens is 0.5 mg/L or less. Human pharmacokinetics: GHB is rapidly absorbed from the gut and distributes into the total body water compartment. Only a small fraction of the dose (1-2%) is excreted unchanged in the urine. The plasma elimination half-life of γ-hydroxybutyric acid is short, being only about 0.5-0.9 h, which requires timely sampling of blood and other biological specimens for clinical and forensic analysis. Endogenous concentrations of GHB in blood: GHB is both an endogenous metabolite and a drug of abuse, which complicates interpretation of the laboratory results of analysis. Moreover, the concentrations of GHB in blood and other specimens tend to increase after sampling, especially in autopsy cases. This requires the use of practical "cut-off" concentrations to avoid reporting false positive results. These cut-offs are different for different biological specimen types. Concentrations of GHB in clinical and forensic practice: As a recreational drug GHB is predominantly used by young males (94%) with a mean age of 27.1 years. The mean (median) and range of concentrations in blood from apprehended drivers was 90 mg/L (82 mg/L) and 8-600 mg/L, respectively. The concentration distributions in blood taken from living and deceased persons overlapped, although the mean (median) and range of concentrations were higher in intoxication deaths; 640 mg/L (280 mg/L) and 30-9200 mg/L, respectively. Analysis of GHB in alternative specimens: All biological fluids and tissue containing water are suitable for the analysis of GHB. Examples of alternative specimens discussed in this review are CSF, saliva, hair strands, breast milk, DBS, VH, and brain tissue. CONCLUSIONS Body fluids for the analysis of GHB must be obtained as quickly as possible after a poisoned patient is admitted to hospital or after a person is arrested for a drug-related crime to enhance chances of detecting the drug. The sampling of urine lengthens the window of detection by 3-4 h compared with blood samples, but with longer delays between last intake of GHB and obtaining specimens, hair strands, and/or nails might be the only option. In postmortem toxicology, the concentrations of drugs tend to be more stable in bladder urine, VH, and CSF compared with blood, because these sampling sites are protected from the spread of bacteria from the gut. Accordingly, the relationship between blood and urine concentrations of GHB furnishes useful information when drug intoxication deaths are investigated.
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Affiliation(s)
- Francesco Paolo Busardò
- a Department of Anatomical, Histological, Forensic and Orthopaedic Sciences , Sapienza University of Rome , Rome , Italy
| | - Alan Wayne Jones
- b Department of Clinical Pharmacology , University of Linköping , Linköping , Sweden
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Jones AW, Holmgren A, Kugelberg FC, Busardò FP. Relationship Between Postmortem Urine and Blood Concentrations of GHB Furnishes Useful Information to Help Interpret Drug Intoxication Deaths. J Anal Toxicol 2018; 42:587-591. [DOI: 10.1093/jat/bky041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 05/28/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- A W Jones
- Department of Clinical Pharmacology, University of Linköping, 58185 Linköping, Sweden
| | - A Holmgren
- Division of Forensic Toxicology, National Board of Forensic Toxicology, 58758 Linköping, Sweden
| | - F C Kugelberg
- Department of Clinical Pharmacology, University of Linköping, 58185 Linköping, Sweden
- Division of Forensic Toxicology, National Board of Forensic Toxicology, 58758 Linköping, Sweden
| | - F P Busardò
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, 00161 Rome, Italy
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Vårdal L, Wong G, Øiestad ÅML, Pedersen-Bjergaard S, Gjelstad A, Øiestad EL. Rapid determination of designer benzodiazepines, benzodiazepines, and Z-hypnotics in whole blood using parallel artificial liquid membrane extraction and UHPLC-MS/MS. Anal Bioanal Chem 2018; 410:4967-4978. [PMID: 29947895 DOI: 10.1007/s00216-018-1147-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/07/2018] [Accepted: 05/16/2018] [Indexed: 12/30/2022]
Abstract
Benzodiazepines (BZD) and Z-hypnotics are frequently analyzed in forensic laboratories, and in 2012, the designer benzodiazepines (DBZD) emerged on the illegal drug scene. DBZD represent a particular challenge demanding new analytical methods. In this work, parallel artificial liquid membrane extraction (PALME) is used for sample preparation of DBZD, BZD, and Z-hypnotics in whole blood prior to UHPLC-MS/MS analysis. PALME of BZD, DBZD, and Z-hypnotics was performed from whole blood samples, and the analytes were extracted across a supported liquid membrane (SLM) and into an acceptor solution of dimethyl sulfoxide and 200 mM formic acid (75:25, v/v). The method was validated according to EMA guidelines. The method was linear throughout the calibration range (R2 > 0.99). Intra- and inter-day accuracy and precision, as well as matrix effects, were within the guideline limit of ± 15%. LOD and LLOQ ranged from 0.10 to 5.0 ng mL-1 and 3.2 to 160 ng mL-1, respectively. Extraction recoveries were reproducible and above 52%. The method was specific, and the analytes were stable in the PALME extracts for 4 and 10 days at 10 and - 20 °C. No carry-over was observed within the calibration range. PALME and UHPLC-MS/MS for the determination of DBZD, BZD, and Z-hypnotics in whole blood are a green and low-cost alternative that provides high sample throughput (96-well format), extensive sample clean-up, good sensitivity, and high reproducibility. The presented method is also the first method incorporating analysis of DBZD, BZD, and Z-hypnotics in whole blood in one efficient analysis. Graphical abstract.
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Affiliation(s)
- Linda Vårdal
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
| | - Gladys Wong
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
| | - Åse Marit Leere Øiestad
- Department of Forensic Sciences, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway
| | - Stig Pedersen-Bjergaard
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
- Faculty of Health and Medical Sciences, School of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Astrid Gjelstad
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway
| | - Elisabeth Leere Øiestad
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316, Oslo, Norway.
- Department of Forensic Sciences, Oslo University Hospital, P.O. Box 4950, Nydalen, 0424, Oslo, Norway.
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Moretti M, Visonà SD, Freni F, Tomaciello I, Vignali C, Groppi A, Tajana L, Osculati AMM, Morini L. A liquid chromatography-tandem mass spectrometry method for the determination of cocaine and metabolites in blood and in dried blood spots collected from postmortem samples and evaluation of the stability over a 3-month period. Drug Test Anal 2018; 10:1430-1437. [DOI: 10.1002/dta.2399] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 03/30/2018] [Accepted: 04/19/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Matteo Moretti
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Silvia Damiana Visonà
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Francesca Freni
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Ilaria Tomaciello
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Claudia Vignali
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Angelo Groppi
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Luca Tajana
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Antonio Marco Maria Osculati
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
| | - Luca Morini
- Department of Public Health, Experimental and Forensic Medicine; University of Pavia; via Forlanini 12 27100 Pavia Italy
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Ferrara SD, Cecchetto G, Cecchi R, Favretto D, Grabherr S, Ishikawa T, Kondo T, Montisci M, Pfeiffer H, Bonati MR, Shokry D, Vennemann M, Bajanowski T. Back to the Future - Part 2. Post-mortem assessment and evolutionary role of the bio-medicolegal sciences. Int J Legal Med 2017; 131:1085-1101. [PMID: 28444439 DOI: 10.1007/s00414-017-1585-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 03/29/2017] [Indexed: 02/06/2023]
Abstract
Part 2 of the review "Back to the Future" is dedicated to the evolutionary role of the bio-medicolegal sciences, reporting the historical profiles, the state of the art, and prospects for future development of the main related techniques and methods of the ancillary disciplines that have risen to the role of "autonomous" sciences, namely, Genetics and Genomics, Toxicology, Radiology, and Imaging, involved in historic synergy in the "post-mortem assessment," together with the mother discipline Legal Medicine, by way of its primary fundament, universally denominated as Forensic Pathology. The evolution of the scientific research and the increased accuracy of the various disciplines will be oriented towards the elaboration of an "algorithm," able to weigh the value of "evidence" placed at the disposal of the "justice system" as real truth and proof.
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Affiliation(s)
- Santo Davide Ferrara
- Department of Legal and Occupational Medicine, Toxicology and Public Health, University-Hospital of Padova, Padua, Italy.
| | - Giovanni Cecchetto
- Department of Legal and Occupational Medicine, Toxicology and Public Health, University-Hospital of Padova, Padua, Italy
| | - Rossana Cecchi
- Department of Biomedical, Biotechnological and Translational Medicine, University of Parma, Parma, Italy
| | - Donata Favretto
- Department of Legal and Occupational Medicine, Toxicology and Public Health, University-Hospital of Padova, Padua, Italy
| | - Silke Grabherr
- University Center of Legal Medicine Lausanne-Geneva, University of Lausanne, Lausanne, Switzerland
| | - Takaki Ishikawa
- Department of Legal Medicine, Osaka City University Medical School, Osaka, Japan
| | - Toshikazu Kondo
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan
| | - Massimo Montisci
- Department of Legal and Occupational Medicine, Toxicology and Public Health, University-Hospital of Padova, Padua, Italy
| | - Heidi Pfeiffer
- Institute of Legal Medicine, University-Hospital Münster, Münster, Germany
| | - Maurizio Rippa Bonati
- Department of Cardiac, Thoracic and Vascular Sciences, Section of Medical Humanities, University of Padova, Padua, Italy
| | - Dina Shokry
- Department of Forensic Medicine and Clinical Toxicology, University of Cairo, Cairo, Egypt
| | - Marielle Vennemann
- Institute of Legal Medicine, University-Hospital Münster, Münster, Germany
| | - Thomas Bajanowski
- Institute of Legal Medicine, University-Hospital Essen, Essen, Germany
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21
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Dinis-Oliveira RJ, Vieira DN, Magalhães T. Guidelines for Collection of Biological Samples for Clinical and Forensic Toxicological Analysis. Forensic Sci Res 2017; 1:42-51. [PMID: 30483610 PMCID: PMC6197137 DOI: 10.1080/20961790.2016.1271098] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/21/2016] [Indexed: 11/30/2022] Open
Abstract
This article aims to review general procedures for sampling of routinely collected as well as on alternative samples that may provide additional information regarding intoxication. These approaches may be applied whenever sample collection for clinical and forensic toxicology is required and should be considered as general guidelines that must be adapted to each specific case. It is expected that this article will help toxicologists and other forensic experts to accomplish their mission, since the toxicological result is first influenced by the quality and quantity of the sample available for analysis. These guidelines were approved by the European Council of Legal Medicine.
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Affiliation(s)
- Ricardo Jorge Dinis-Oliveira
- Department of Legal Medicine and Forensic Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.,Department of Sciences, IINFACTS - Institute of Research and Advanced Training in Health Sciences and Technologies, University Institute of Health Sciences (IUCS), CESPU, CRL, Gandra, Portugal.,UCIBIO-REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | | | - Teresa Magalhães
- Department of Legal Medicine and Forensic Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.,Department of Sciences, IINFACTS - Institute of Research and Advanced Training in Health Sciences and Technologies, University Institute of Health Sciences (IUCS), CESPU, CRL, Gandra, Portugal
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22
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Bazmi E, Behnoush B, Akhgari M, Bahmanabadi L. Quantitative analysis of benzodiazepines in vitreous humor by high-performance liquid chromatography. SAGE Open Med 2016; 4:2050312116666243. [PMID: 27635251 PMCID: PMC5011391 DOI: 10.1177/2050312116666243] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 08/02/2016] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Benzodiazepines are frequently screened drugs in emergency toxicology, drugs of abuse testing, and in forensic cases. As the variations of benzodiazepines concentrations in biological samples during bleeding, postmortem changes, and redistribution could be biasing forensic medicine examinations, hence selecting a suitable sample and a validated accurate method is essential for the quantitative analysis of these main drug categories. The aim of this study was to develop a valid method for the determination of four benzodiazepines (flurazepam, lorazepam, alprazolam, and diazepam) in vitreous humor using liquid-liquid extraction and high-performance liquid chromatography. METHODS Sample preparation was carried out using liquid-liquid extraction with n-hexane: ethyl acetate and subsequent detection by high-performance liquid chromatography method coupled to diode array detector. This method was applied to quantify benzodiazepines in 21 authentic vitreous humor samples. Linear curve for each drug was obtained within the range of 30-3000 ng/mL with coefficient of correlation higher than 0.99. RESULTS The limit of detection and quantitation were 30 and 100 ng/mL respectively for four drugs. The method showed an appropriate intra- and inter-day precision (coefficient of variation < 10%). Benzodiazepines recoveries were estimated to be over 80%. The method showed high selectivity; no additional peak due to interfering substances in samples was observed. CONCLUSION The present method was selective, sensitive, accurate, and precise for the quantitative analysis of benzodiazepines in vitreous humor samples in forensic toxicology laboratory.
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Affiliation(s)
- Elham Bazmi
- Legal Medicine Research Center, Legal Medicine Organization, Forensic Toxicology Department, Tehran, Iran
| | - Behnam Behnoush
- Department of Forensic Medicine, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Maryam Akhgari
- Legal Medicine Research Center, Legal Medicine Organization, Forensic Toxicology Department, Tehran, Iran
| | - Leila Bahmanabadi
- Legal Medicine Research Center, Legal Medicine Organization, Forensic Toxicology Department, Tehran, Iran
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23
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Bazmi E, Behnoush B, Akhgari M, Bahmanabadi L. Quantitative analysis of benzodiazepines in vitreous humor by high-performance liquid chromatography. SAGE Open Med 2016. [DOI: https://doi.org/10.1177%2f2050312116666243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Objective: Benzodiazepines are frequently screened drugs in emergency toxicology, drugs of abuse testing, and in forensic cases. As the variations of benzodiazepines concentrations in biological samples during bleeding, postmortem changes, and redistribution could be biasing forensic medicine examinations, hence selecting a suitable sample and a validated accurate method is essential for the quantitative analysis of these main drug categories. The aim of this study was to develop a valid method for the determination of four benzodiazepines (flurazepam, lorazepam, alprazolam, and diazepam) in vitreous humor using liquid–liquid extraction and high-performance liquid chromatography. Methods: Sample preparation was carried out using liquid–liquid extraction with n-hexane: ethyl acetate and subsequent detection by high-performance liquid chromatography method coupled to diode array detector. This method was applied to quantify benzodiazepines in 21 authentic vitreous humor samples. Linear curve for each drug was obtained within the range of 30–3000 ng/mL with coefficient of correlation higher than 0.99. Results: The limit of detection and quantitation were 30 and 100 ng/mL respectively for four drugs. The method showed an appropriate intra- and inter-day precision (coefficient of variation < 10%). Benzodiazepines recoveries were estimated to be over 80%. The method showed high selectivity; no additional peak due to interfering substances in samples was observed. Conclusion: The present method was selective, sensitive, accurate, and precise for the quantitative analysis of benzodiazepines in vitreous humor samples in forensic toxicology laboratory.
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Affiliation(s)
- Elham Bazmi
- Legal Medicine Research Center, Legal Medicine Organization, Forensic Toxicology Department, Tehran, Iran
| | - Behnam Behnoush
- Department of Forensic Medicine, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Maryam Akhgari
- Legal Medicine Research Center, Legal Medicine Organization, Forensic Toxicology Department, Tehran, Iran
| | - Leila Bahmanabadi
- Legal Medicine Research Center, Legal Medicine Organization, Forensic Toxicology Department, Tehran, Iran
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Abstract
The identification and quantitation of the main psychoactive component of Salvia divinorum (salvinorin A) in biological specimens are crucial in forensic and clinical toxicology. Despite all the efforts made, its uncontrolled abuse has increased quickly, exposing its users' health to serious risks both in the short and long term. The use of alternative biological matrices in toxicological analyzes can be advantageous as complementary postmortem samples, or in situations when neither blood nor urine can be collected; they may be useful tools in those determinations, providing important information about prior exposure. The aim of this article is to present a brief summary of legal aspects of Salvia divinorum and salvinorin A, including the methods used for the determination of the latter in biological matrices.
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Analytical Strategy. Forensic Toxicol 2016. [DOI: 10.1016/b978-0-12-799967-8.00005-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Busardò FP, Kyriakou C, Tittarelli R, Mannocchi G, Pantano F, Santurro A, Zaami S, Baglìo G. Assessment of the stability of mephedrone in ante-mortem and post-mortem blood specimens. Forensic Sci Int 2015; 256:28-37. [DOI: 10.1016/j.forsciint.2015.07.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 05/02/2015] [Accepted: 07/07/2015] [Indexed: 11/28/2022]
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Morini L, Vignali C, Tricomi P, Groppi A. Analytical Challenge in Postmortem Toxicology Applied to a Human Body Found into a Lake after Three Years Immersion. J Forensic Sci 2015; 60:1383-6. [PMID: 26258895 DOI: 10.1111/1556-4029.12815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 08/27/2014] [Accepted: 08/29/2014] [Indexed: 12/01/2022]
Abstract
The body of a 30-year-old woman was found in Como lake at a depth of about 120 meters in her own car after 3 years of immersion. The aim of this study was to evaluate psychoactive drugs as well as alcohol biomarkers in biological matrices. The following analyses were initially performed: GC-MS systematic toxicological analysis on biological fluids and tissues; GC-MS analysis of drugs of abuse on pubic hair; direct ethanol metabolite determination in pubic hair by LC-MS/MS. After 7 years, the samples, that had been stored at -20°C, were re-analyzed and submitted to an LC-MS/MS targeted screening method, using multiple reaction monitoring mode. These analyses detected citalopram (150-3000 ng/mL), desmethylcitalopram (50-2300 ng/mL), clotiapine (20-65 ng/mL), and ethyl glucuronide (97 pg/mg). The methods showed an acceptable reproducibility, and the concentrations of citalopram and desmethylcitalopram calculated through the two analytical techniques did not significantly differ in biological fluids.
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Affiliation(s)
- Luca Morini
- Department of Public Health, Forensic and Experimental Medicine, University of Pavia, Via Forlanini 12, 27100, Pavia, Italy
| | - Claudia Vignali
- Department of Public Health, Forensic and Experimental Medicine, University of Pavia, Via Forlanini 12, 27100, Pavia, Italy
| | - Paolo Tricomi
- Anatomopathological Unit, Hospital of Lecco, via dell'Eremo 9/11, 23900, Lecco, Italy
| | - Angelo Groppi
- Department of Public Health, Forensic and Experimental Medicine, University of Pavia, Via Forlanini 12, 27100, Pavia, Italy
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Valente NI, Tarelho S, Castro AL, Silvestre A, Teixeira HM. Analysis of organophosphorus pesticides in whole blood by GC-MS-μECD with forensic purposes. J Forensic Leg Med 2015; 33:28-34. [DOI: 10.1016/j.jflm.2015.03.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 02/04/2015] [Accepted: 03/22/2015] [Indexed: 10/23/2022]
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Patteet L, Cappelle D, Maudens KE, Crunelle CL, Sabbe B, Neels H. Advances in detection of antipsychotics in biological matrices. Clin Chim Acta 2014; 441:11-22. [PMID: 25512162 DOI: 10.1016/j.cca.2014.12.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 11/21/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
Abstract
Measuring antipsychotic concentrations in human matrices is important for both therapeutic drug monitoring and forensic toxicology. This review provides a critical overview of the analytical methods for detection and quantification of antipsychotics published in the last four years. Focus lies on advances in sample preparation, analytical techniques and alternative matrices. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is used most often for quantification of antipsychotics. This sensitive technique makes it possible to determine low concentrations not only in serum, plasma or whole blood, but also in alternative matrices like oral fluid, dried blood spots, hair, nails and other body tissues. Current literature on analytical techniques for alternative matrices is still limited and often requires a more thorough validation including a comparison between conventional and alternative results to determine their actual value. Ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) makes it possible to quantify a high amount of compounds within a shorter run time. This technique is widely used for multi-analyte methods. Only recently, high-resolution mass spectrometry has gained importance when a combination of screening of (un)known metabolites, and quantification is required.
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Affiliation(s)
- Lisbeth Patteet
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium; Laboratory for TDM and Toxicology, ZNA Stuivenberg, Lange Beeldekensstraat 267, B-2060 Antwerp, Belgium.
| | - Delphine Cappelle
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Kristof E Maudens
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Cleo L Crunelle
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Bernard Sabbe
- Collaborative Antwerp Psychiatric Research Institute (CAPRI), Faculty of Medicine, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Hugo Neels
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium; Laboratory for TDM and Toxicology, ZNA Stuivenberg, Lange Beeldekensstraat 267, B-2060 Antwerp, Belgium
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Recent developments in urinalysis of metabolites of new psychoactive substances using LC–MS. Bioanalysis 2014; 6:2083-107. [DOI: 10.4155/bio.14.168] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
In the last decade, an ever-increasing number of new psychoactive substances (NPSs) have appeared on the recreational drug market. To account for this development, analytical toxicologists have to continuously adapt their methods to encompass the latest NPSs. Urine is the preferred biological matrix for screening analysis in different areas of analytical toxicology. However, the development of urinalysis procedures for NPSs is complicated by the fact that generally little or no information on urinary excretion patterns of such drugs exists when they first appear on the market. Metabolism studies are therefore a prerequisite in the development of urinalysis methods for NPSs. In this article, the literature on the urinalysis of NPS metabolites will be reviewed, focusing on articles published after 2008.
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Costa R. Newly Introduced Sample Preparation Techniques: Towards Miniaturization. Crit Rev Anal Chem 2014; 44:299-310. [DOI: 10.1080/10408347.2013.860874] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Evaluation of surrogate matrices for standard curve preparation in tissue bioanalysis. Bioanalysis 2014; 4:2579-87. [PMID: 23173793 DOI: 10.4155/bio.12.237] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The aim of this work was to investigate the feasibility of using tissue surrogate matrices and plasma for determining drug concentrations in tissues by LC-MS/MS. RESULTS The similarity of tissues was evaluated using eight model compounds with different SlogP values. For plasma dilution, the overall matrix effects of tissue samples were found to approximate to those of pure plasma samples when plasma percentage was increased. When a ten-fold plasma dilution was applied, the differences between the instrumental responses of diluted tissue samples and pure plasma samples with the same spiked concentrations were within ±20%. The results of tissue bioanalysis using plasma dilution and plasma curve for in vivo studies were acceptable with an averaged deviation of ±20-25% compared with data using traditional tissue curves. CONCLUSION Results demonstrate that tissue samples can be quantified using surrogate matrices. Plasma standard curves can be used for quantitation of both plasma and plasma-diluted tissue samples.
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Moreno AMJ, Navas MJ, Asuero AG. HPLC-DAD Determination of CNS-Acting Drugs in Human Blood, Plasma, and Serum. Crit Rev Anal Chem 2013; 44:68-106. [DOI: 10.1080/10408347.2013.828570] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Development of a simple one-pot extraction method for various drugs and metabolites of forensic interest in blood by modifying the QuEChERS method. Forensic Sci Int 2013; 232:40-5. [DOI: 10.1016/j.forsciint.2013.06.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 06/10/2013] [Accepted: 06/20/2013] [Indexed: 11/22/2022]
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Scientific Working Group for Forensic Toxicology (SWGTOX) Standard Practices for Method Validation in Forensic Toxicology. J Anal Toxicol 2013; 37:452-74. [DOI: 10.1093/jat/bkt054] [Citation(s) in RCA: 548] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Palmiere C, Mangin P, Werner D. Preliminary results on the postmortem measurement of 3-beta-hydroxybutyrate in liver homogenates. Int J Legal Med 2013; 127:943-9. [DOI: 10.1007/s00414-013-0870-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Accepted: 05/06/2013] [Indexed: 11/29/2022]
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37
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Roman M, Ström L, Tell H, Josefsson M. Liquid chromatography/time-of-flight mass spectrometry analysis of postmortem blood samples for targeted toxicological screening. Anal Bioanal Chem 2013; 405:4107-25. [DOI: 10.1007/s00216-013-6798-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 01/26/2013] [Accepted: 01/28/2013] [Indexed: 10/27/2022]
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Battal D, Hilal A, Daglioglu K, Unal I, Gulmen MK. Evaluation of paracetamol distribution and stability in case of acute intoxication in rats. Hum Exp Toxicol 2013; 32:82-9. [DOI: 10.1177/0960327112456314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Effects of different storing conditions on paracetamol concentration in biological samples of acute intoxicated rats were investigated. The stability and distribution of paracetamol was observed in postmortem serum, liver, kidney and brain tissues. The serum samples were stored for 30 days and daily changes were evaluated for paracetamol. A significant difference ( p = 0.05) was noticed on the 30th experimental day. Paracetamol serum levels changed as much as 66.30% and 33.78% for 4°C and −20°C, respectively. The stability of paracetamol in liver stored at −20°C was also evaluated for 30 days. The paracetamol concentration levels taken from liver samples dramatically decreased from 30.36% on the 1st day to 94.97% on the 30th day. The paracetamol distribution in organs was as 2.68 , 1.11 and 0.68 mg/g in liver, kidney and brain samples, respectively. Meaningful difference in paracetamol in serum and liver samples was in observed in 30th day values ( p = 0.05).
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Affiliation(s)
- D Battal
- Department of Toxicology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
| | - A Hilal
- Department of Forensic Medicine, School of Medicine, Cukurova University, Adana, Turkey
| | - K Daglioglu
- Vocational High School of Health, Cukurova University, Adana, Turkey
| | - I Unal
- Department of Biostatistics, School of Medicine, Cukurova University, Adana, Turkey
| | - MK Gulmen
- Department of Forensic Medicine, School of Medicine, Cukurova University, Adana, Turkey
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Drummer OH, Kennedy B, Bugeja L, Ibrahim JE, Ozanne-Smith J. Interpretation of postmortem forensic toxicology results for injury prevention research. Inj Prev 2012. [DOI: 10.1136/injuryprev-2012-040488] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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40
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Applications of Tandem Mass Spectrometry (LC–MSMS) in estimating the post-mortem interval using the biochemistry of the vitreous humour. Forensic Sci Int 2012; 223:160-4. [DOI: 10.1016/j.forsciint.2012.08.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 06/27/2012] [Accepted: 08/22/2012] [Indexed: 11/17/2022]
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41
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Guale F, Shahreza S, Walterscheid JP, Chen HH, Arndt C, Kelly AT, Mozayani A. Validation of LC-TOF-MS screening for drugs, metabolites, and collateral compounds in forensic toxicology specimens. J Anal Toxicol 2012; 37:17-24. [PMID: 23118149 DOI: 10.1093/jat/bks084] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Liquid chromatography time-of-flight mass spectrometry (LC-TOF-MS) analysis provides an expansive technique for identifying many known and unknown analytes. This study developed a screening method that utilizes automated solid-phase extraction to purify a wide array of analytes involving stimulants, benzodiazepines, opiates, muscle relaxants, hypnotics, antihistamines, antidepressants and newer synthetic "Spice/K2" cannabinoids and cathinone "bath salt" designer drugs. The extract was applied to LC-TOF-MS analysis, implementing a 13 min chromatography gradient with mobile phases of ammonium formate and methanol using positive mode electrospray. Several common drugs and metabolites can share the same mass and chemical formula among unrelated compounds, but they are structurally different. In this method, the LC-TOF-MS was able to resolve many isobaric compounds by accurate mass correlation within 15 ppm mass units and a narrow retention time interval of less than 10 s of separation. Drug recovery yields varied among spiked compounds, but resulted in overall robust area counts to deliver an average match score of 86 when compared to the retention time and mass of authentic standards. In summary, this method represents a rapid, enhanced screen for blood and urine specimens in postmortem, driving under the influence, and drug facilitated sexual assault forensic toxicology casework.
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Affiliation(s)
- Fessessework Guale
- Harris County Institute of Forensic Sciences, Toxicology Laboratory, Houston, Texas 77054, USA
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42
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Usui K, Hayashizaki Y, Hashiyada M, Funayama M. Rapid drug extraction from human whole blood using a modified QuEChERS extraction method. Leg Med (Tokyo) 2012; 14:286-96. [DOI: 10.1016/j.legalmed.2012.04.008] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 04/17/2012] [Accepted: 04/23/2012] [Indexed: 11/27/2022]
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43
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Oertel R, Pietsch J, Arenz N, Zeitz SG, Goltz L, Kirch W. Simultaneous determination of drugs in human autopsy material using phase-optimized liquid chromatography. Biomed Chromatogr 2012; 26:1608-16. [DOI: 10.1002/bmc.2739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 02/27/2012] [Indexed: 11/10/2022]
Affiliation(s)
- R. Oertel
- Institute of Clinical Pharmacology, Medical Faculty Carl Gustav Carus; Technical University Dresden; Fiedlerstr. 27; 01307; Dresden; Germany
| | - J. Pietsch
- Institute of Legal Medicine, Medical Faculty Carl Gustav Carus; Technical University Dresden
| | - N. Arenz
- Institute of Clinical Pharmacology, Medical Faculty Carl Gustav Carus; Technical University Dresden; Fiedlerstr. 27; 01307; Dresden; Germany
| | - S. G. Zeitz
- Institute of Clinical Pharmacology, Medical Faculty Carl Gustav Carus; Technical University Dresden; Fiedlerstr. 27; 01307; Dresden; Germany
| | - L. Goltz
- Institute of Clinical Pharmacology, Medical Faculty Carl Gustav Carus; Technical University Dresden; Fiedlerstr. 27; 01307; Dresden; Germany
| | - W. Kirch
- Institute of Clinical Pharmacology, Medical Faculty Carl Gustav Carus; Technical University Dresden; Fiedlerstr. 27; 01307; Dresden; Germany
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44
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Jamt REG, Gjelstad A, Eibak LEE, Øiestad EL, Christophersen AS, Rasmussen KE, Pedersen-Bjergaard S. Electromembrane extraction of stimulating drugs from undiluted whole blood. J Chromatogr A 2012; 1232:27-36. [DOI: 10.1016/j.chroma.2011.08.058] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 08/11/2011] [Accepted: 08/12/2011] [Indexed: 11/16/2022]
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45
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Sanches LR, Seulin SC, Leyton V, Bismara Paranhos BAP, Pasqualucci CA, Munoz DR, Osselton MD, Yonamine M. Determination of Opiates in Whole Blood and Vitreous Humor: A Study of the Matrix Effect and an Experimental Design to Optimize Conditions for the Enzymatic Hydrolysis of Glucuronides. J Anal Toxicol 2012; 36:162-70. [DOI: 10.1093/jat/bks007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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46
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Fernández P, Seoane S, Vázquez C, Tabernero MJ, Carro AM, Lorenzo RA. Chromatographic determination of drugs of abuse in vitreous humor using solid-phase extraction. J Appl Toxicol 2012; 33:740-5. [PMID: 22337121 DOI: 10.1002/jat.2722] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 12/22/2011] [Accepted: 12/22/2011] [Indexed: 11/12/2022]
Abstract
A simple method is presented for the simultaneous determination of morphine, 6-acetylmorphine, codeine, cocaine, benzoylecgonine, cocaethylene, methadone and 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) in vitreous humor by high-performance liquid chromatography with photodiode array detector after solid-phase extraction with Oasis® HLB cartridges and dichloromethane as eluent. The chromatographic process was carried out using an XTerra® RP8 column (250 × 4.6 mm i.d., 5 µm particle size) and a mobile phase composed of acetonitrile and pH 6.5 phosphate buffer in gradient mode. A linear response from the detector was obtained within the concentration range of 0.1-4 µg ml(-1) , with correlation coefficients higher than 0.99. The limits of detection were lower than 30 ng ml(-1) for all the drugs studied, the coefficients of variation fluctuated between 0.1 and 12.4%, and the average recoveries were higher than 78% for all the drugs except for EDDP, with a value of 66.4%. Finally, the proposed method was applied to 15 vitreous humor samples coming from individuals who had died from opiate and/or cocaine overdose, showing consumption of cocaine in 14 cases, methadone in five cases and heroin in three cases. Average concentrations of 0.30 µg ml(-1) for morphine, 0.24 µg ml(-1) for 6-acetylmorphine, 0.10 µg ml(-1) for codeine, 0.81 µg ml(-1) for cocaine, 1.26 µg ml(-1) for benzoylecgonine, 0.15 µg ml(-1) for cocaethylene, 0.11 µg ml(-1) for methadone and 0.68 µg ml(-1) for EDDP were obtained.
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Affiliation(s)
- Purificación Fernández
- Institute of Forensic Sciences, Forensic Toxicology Service, Faculty of Medicine, 15782-Santiago de Compostela, Spain.
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47
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Current use of high-resolution mass spectrometry in drug screening relevant to clinical and forensic toxicology and doping control. Anal Bioanal Chem 2012; 403:1203-20. [DOI: 10.1007/s00216-012-5726-z] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 01/06/2012] [Accepted: 01/09/2012] [Indexed: 10/14/2022]
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48
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A rapid analytical method based on microwave-assisted extraction for the determination of drugs of abuse in vitreous humor. Anal Bioanal Chem 2011; 401:2177-86. [DOI: 10.1007/s00216-011-5279-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 07/13/2011] [Accepted: 07/21/2011] [Indexed: 10/17/2022]
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49
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Kovatsi L, Rentifis K, Giannakis D, Njau S, Samanidou V. Disposable pipette extraction for gas chromatographic determination of codeine, morphine, and 6-monoacetylmorphine in vitreous humor. J Sep Sci 2011; 34:1716-21. [DOI: 10.1002/jssc.201100124] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Revised: 04/15/2011] [Accepted: 04/17/2011] [Indexed: 11/06/2022]
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50
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Illicit drugs in alternative biological specimens: A case report. J Forensic Leg Med 2011; 18:132-5. [DOI: 10.1016/j.jflm.2010.12.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 12/03/2010] [Accepted: 12/30/2010] [Indexed: 11/20/2022]
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