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Jeong S, Kim Y, Choe S, Kang H, Kim HM, Kang JS. A fatal case of desvenlafaxine and paroxetine poisoning. J Pharm Biomed Anal 2024; 245:116148. [PMID: 38652939 DOI: 10.1016/j.jpba.2024.116148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/11/2024] [Accepted: 04/13/2024] [Indexed: 04/25/2024]
Abstract
Desvenlafaxine (O-desmethylvenlafaxine) and paroxetine are antidepressants that inhibit serotonin reuptake. Despite their relatively safe profiles, several serious side effects, including serotonin syndrome, bleeding, mania, and high blood pressure, are observed. We report the confirmation of the death of a 41-year-old female, with an overdose of desvenlafaxine and paroxetine suspected as the main cause of death. To quantify the level of desvenlafaxine and paroxetine in whole blood and urine, solid phase extraction combined with liquid chromatography-tandem mass spectrometry was developed and validated. Calibration curves were linear with coefficients of determination (r2) >0.999 for desvenlafaxine and paroxetine. The limits of detection and the limits of quantification for both desvenlafaxine and paroxetine were 0.001 µg/mL and 0.02 µg/mL, respectively. Desvenlafaxine and paroxetine were detected in the postmortem samples, along with various psychiatric drugs, and the blood alcohol content level was below 0.010%. The concentrations of desvenlafaxine and paroxetine in the heart blood were 11.0 µg/mL and 2.1 µg/mL, respectively, indicating lethal concentrations. In the urine, the concentrations of desvenlafaxine and paroxetine were 87.7 µg/mL and 3.5 µg/mL, respectively. This is the first report to determine the blood concentration of desvenlafaxine in a fatal intoxication caused by an overdose of desvenlafaxine single formulation.
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Affiliation(s)
- Sujin Jeong
- National Forensic Service, Jeju-do 63309, Republic of Korea
| | - Yoseob Kim
- National Forensic Service, Jeju-do 63309, Republic of Korea
| | - Sanggil Choe
- National Forensic Service, Wonju 26460, Republic of Korea
| | - Hyunwook Kang
- Department of Forensic Medicine, College of Medicine, Jeju National University, Jeju-do 63241, Republic of Korea
| | - Hyung Min Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Jong Seong Kang
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea.
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2
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Doerr AA, Nordmeier F, Walle N, Laschke MW, Menger MD, Meyer MR, Schmidt PH, Schaefer N. Does a postmortem redistribution affect the concentrations of the 7 azaindole-derived synthetic cannabinoid 5F-MDMB-P7AICA in tissues and body fluids following pulmonary administration to pigs? Arch Toxicol 2024:10.1007/s00204-024-03815-1. [PMID: 38955864 DOI: 10.1007/s00204-024-03815-1] [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: 05/10/2024] [Accepted: 06/26/2024] [Indexed: 07/04/2024]
Abstract
Many fatal intoxications have been reported in connection with the consumption of newer, highly potent synthetic cannabinoids. Yet, a possible postmortem redistribution (PMR) might complicate reliable interpretation of analytical results. Thus, it is necessary to investigate the PMR-potential of new synthetic cannabinoids. The pig model has already proven to be suitable for this purpose. Hence, the aim of this study was to study the PMR of the synthetic cannabinoid 5F-MDMB-P7AICA and its main metabolite 5F-MDMB-P7AICA-dimethylbutanoic acid (DBA). 5F-MDMB-P7AICA (200 µg/kg body weight) was administered by inhalation to anesthetized and ventilated pigs. At the end of the experiment, the animals were euthanized and stored at room temperature for 3 days. Tissue and body fluid samples were taken daily. Specimens were analyzed after solid phase extraction using a standard addition method and LC-MS/MS, blood was quantified after protein precipitation using a validated method. In perimortem samples, 5F-MDMB-P7AICA was found mainly in adipose tissue, bile fluid, and duodenum contents. Small amounts of 5F-MDMB-P7AICA were found in blood, muscle, brain, liver, and lung. High concentrations of DBA were found primarily in bile fluid, duodenum contents, urine, and kidney/perirenal fat tissue. In the remaining tissues, rather low amounts could be found. In comparison to older synthetic cannabinoids, PMR of 5F-MDMB-P7AICA was less pronounced. Concentrations in blood also appear to remain relatively stable at a low level postmortem. Muscle, kidney, fat, and duodenum content are suitable alternative matrices for the detection of 5F-MDMB-P7AICA and DBA, if blood specimens are not available. In conclusion, concentrations of 5F-MDMB-P7AICA and its main metabolite DBA are not relevantly affected by PMR.
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Affiliation(s)
- Adrian A Doerr
- Institute of Legal Medicine, Saarland University, Building 49.1, 66421, Homburg, Germany
| | - Frederike Nordmeier
- Institute of Legal Medicine, University Hospital Schleswig-Holstein, Building U35, 24105, Kiel, Germany
| | - Nadja Walle
- Institute of Legal Medicine, Saarland University, Building 49.1, 66421, Homburg, Germany
| | - Matthias W Laschke
- Institute for Clinical & Experimental Surgery, Saarland University, Building 65/66, 66421, Homburg, Germany
| | - Michael D Menger
- Institute for Clinical & Experimental Surgery, Saarland University, Building 65/66, 66421, Homburg, Germany
| | - Markus R Meyer
- Department of Experimental and Clinical Toxicology, Center for Molecular Signaling (PZMS), Saarland University, Building 46, 66421, Homburg, Germany
| | - Peter H Schmidt
- Institute of Legal Medicine, Saarland University, Building 49.1, 66421, Homburg, Germany
| | - Nadine Schaefer
- Institute of Legal Medicine, Saarland University, Building 49.1, 66421, Homburg, Germany.
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3
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Li Z, Li Z, Qiang H, Xie W, Su M, Xiang P, Shi Y. Quantitative determination of nitrous oxide in human blood by HS-GC-MS: forensic application of two fatal poisoning cases. Forensic Sci Int 2024; 360:112067. [PMID: 38821023 DOI: 10.1016/j.forsciint.2024.112067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 06/02/2024]
Abstract
Nitrous oxide (N2O), also known as laughing gas, has a euphoric effect and is becoming increasingly popular as a recreational inhalant drug. Deaths caused by recreational nitrous oxide abuse are rare, but may still occur. Although some methods for the quantification of N2O by GC-MS have been reported, elimination of carbon dioxide interference and the choice of a suitable internal standard remain current limitations to accurate N2O quantification. Here, a validated method using headspace-gas chromatography-mass spectrometry (HS-GC-MS) is described that allows the quantification of N2O in human blood samples: sodium hydroxide is used to remove carbon dioxide, and n-pentane is chosen as a suitable internal standard. Collectively, the validation results show a good linear relationship of N2O in blood within the concentration range of 0.02 ∼ 0.5 mL/mL and an LOD of 0.005 mL/mL. Subsequent application of the validated method to two real mortality cases due to N2O intoxication provided reference values for blood concentrations in forensic cases. Other biological specimens (gaseous samples and tissues) of the deceased were also analyzed to demonstrate that the deaths were caused by asphyxia due to the inhalation of N2O.
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Affiliation(s)
- Zehong Li
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Ziyi Li
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Huosheng Qiang
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China
| | - Wanting Xie
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Mengxiang Su
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, PR China
| | - Ping Xiang
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China.
| | - Yan Shi
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China.
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Swaminathan M, Tarifa A, DeCaprio AP. Development and validation of a method for analysis of 25 cannabinoids in oral fluid and exhaled breath condensate. Anal Bioanal Chem 2024:10.1007/s00216-024-05369-8. [PMID: 38864915 DOI: 10.1007/s00216-024-05369-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/13/2024]
Abstract
Currently, there is a significant demand in forensic toxicology for biomarkers of cannabis exposure that, unlike ∆9-tetrahydrocannabinol, can reliably indicate time and frequency of use, be sampled with relative ease, and correlate with impairment. Oral fluid (OF) and exhaled breath condensate (EBC) are alternative, non-invasive sample matrices that hold promise for identifying cannabis exposure biomarkers. OF, produced by salivary glands, is increasingly utilized in drug screening due to its non-invasive collection and is being explored as an alternative matrix for cannabinoid analysis. EBC is an aqueous specimen consisting of condensed water vapor containing water-soluble volatile and non-volatile components present in exhaled breath. Despite potential advantages, there are no reports on the use of EBC for cannabinoid detection. This study developed a supported liquid extraction approach and LC-QqQ-MS dMRM analytical method for quantification of 25 major and minor cannabinoids and metabolites in OF and EBC. The method was validated according to the ANSI/ASB 036 standard and other published guidelines. LOQ ranged from 0.5 to 6.0 ng/mL for all cannabinoids in both matrices. Recoveries for most analytes were 60-90%, with generally higher values for EBC compared to OF. Matrix effects were observed with some cannabinoids, with effects mitigated by use of matrix-matched calibration. Bias and precision were within ± 25%. Method applicability was demonstrated by analyzing ten authentic OF and EBC samples, with positive detections of multiple analytes in both matrices. The method will facilitate comprehensive analysis of cannabinoids in non-invasive sample matrices for the development of reliable cannabis exposure biomarkers.
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Affiliation(s)
- Meena Swaminathan
- Department of Chemistry & Biochemistry, Florida International University, 11200 SW 8th St., Miami, FL, 33199, USA
| | - Anamary Tarifa
- Department of Chemistry & Biochemistry and Global & Forensic Justice Center, Florida International University, Miami, FL, 33199, USA
| | - Anthony P DeCaprio
- Department of Chemistry & Biochemistry, Florida International University, 11200 SW 8th St., Miami, FL, 33199, USA.
- Department of Chemistry & Biochemistry and Global & Forensic Justice Center, Florida International University, Miami, FL, 33199, USA.
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de Paula Meirelles G, Pereira E Silva J, Paranhos BAPB, Yonamine M. Development of a dispersive liquid-liquid microextraction method for the evaluation of maternal-fetal exposure to cocaine employing human umbilical cord tissue. J Anal Toxicol 2024; 48:263-272. [PMID: 38551067 DOI: 10.1093/jat/bkae025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 03/18/2024] [Accepted: 03/21/2024] [Indexed: 06/12/2024] Open
Abstract
Illicit drug use is a serious and complex public health problem, not only due to the severity of the health damage but also to the social implications, such as marginalization and drug trafficking. Currently, cocaine (COC) is among the most abused drugs worldwide with about 22 million users. Drug abuse has also been found in women during the pregnancy period, which has shed light on a new group for epidemiology. The diagnosis of COC use in these cases usually depends largely on the mother's reports, which in several cases omit or deny consumption. Therefore, considering physical-chemical methods of sample preparation and exposure biomarkers, the development of analytic toxicological methods can help to confirm drug use during pregnancy. Thus, the objective of the present work was to develop an analytical method based on dispersive liquid-liquid microextraction for the determination of COC analytes, using umbilical cord tissue as an alternative biological matrix, and detection by gas chromatography coupled to mass spectrometry. Therefore, after optimization, the dispersive liquid-liquid microextraction method was fully validated for quantification of COC, benzoylecgonine, cocaethylene, ecgonine, ecgonine methyl ester and norcocaine. The limits of detection were between 15 and 25 ng/g, the limits of quantification were 30 ng/g for ecgonine and 25 ng/g for the other analytes. Linearity ranged from the limits of quantification to 1,000 ng/g. Coefficients of variation for intra-assay precision were <18.5%, inter-assay was <8.75% and bias was <16.4% for all controls. The developed method was applied in 10 suspected positive samples, based on the mother's report and maternal urine screening and confirmation. COC, benzoylecgonine, ecgonine and ecgonine methyl ester were quantified in four umbilical cords with concentrations that ranged from 39.6 to 420.5 ng/g.
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Affiliation(s)
- Gabriela de Paula Meirelles
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, 580, 13B, Sao Paulo, SP 05508-000, Brazil
| | - Jefferson Pereira E Silva
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, 580, 13B, Sao Paulo, SP 05508-000, Brazil
| | - Beatriz Aparecida Passos Bismara Paranhos
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, Av. Professor Lineu Prestes, 580, 13B, Sao Paulo, SP 05508-000, Brazil
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Laforce E, Dejaeger K, Vanoppen M, Cornelissen E, De Clercq J, Vermeir P. Thorough Validation of Optimized Size Exclusion Chromatography-Total Organic Carbon Analysis for Natural Organic Matter in Fresh Waters. Molecules 2024; 29:2075. [PMID: 38731566 PMCID: PMC11085112 DOI: 10.3390/molecules29092075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/25/2024] [Accepted: 04/27/2024] [Indexed: 05/13/2024] Open
Abstract
Size exclusion chromatography with total organic carbon detection (HPSEC-TOC) is a widely employed technique for characterizing aquatic natural organic matter (NOM) into high, medium, and low molecular weight fractions. This study validates the suitability of HPSEC-TOC for a simplified yet efficient routine analysis of freshwater and its application within drinking water treatment plants. The investigation highlights key procedural considerations for optimal results and shows the importance of sample preservation by refrigeration with a maximum storage duration of two weeks. Prior to analysis, the removal of inorganic carbon is essential, which is achieved without altering the NOM composition through sample acidification to pH 6 and subsequent N2-purging. The chromatographic separation employs a preparative TSK HW-50S column to achieve a limit of detection of 19.0 µgC dm-3 with an injection volume of 1350 mm-3. The method demonstrates linearity up to 10,000 µgC dm-3. Precision, trueness and recovery assessments are conducted using certified reference materials, model compounds, and real water samples. The relative measurement uncertainty in routine analysis ranges from 3.22% to 5.17%, while the measurement uncertainty on the bias is 8.73%. Overall, the HPSEC-TOC represents a reliable tool for NOM fractions analysis in both treated and untreated ground and surface water.
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Affiliation(s)
- Elien Laforce
- Industrial Catalysis and Adsorption Technology (INCAT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Karlien Dejaeger
- PaInT, Particle and Interfacial Technology Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
- Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Frieda Saeysstraat 1, 9052 Ghent, Belgium
- CNRS, UMR 8516—LASIRE—Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l’Environnement, Université de Lille, 59000 Lille, France
| | - Marjolein Vanoppen
- PaInT, Particle and Interfacial Technology Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
- Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Frieda Saeysstraat 1, 9052 Ghent, Belgium
| | - Emile Cornelissen
- PaInT, Particle and Interfacial Technology Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
- Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), Frieda Saeysstraat 1, 9052 Ghent, Belgium
- KWR Water Research Institute, Groningenhaven 7, 3433 PE Nieuwegein, The Netherlands
| | - Jeriffa De Clercq
- Industrial Catalysis and Adsorption Technology (INCAT), Department of Materials, Textiles and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, 9000 Ghent, Belgium
| | - Pieter Vermeir
- Laboratory for Chemical Analysis (LCA), Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
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Epain M, Cartiser N, Bevalot F, Bottinelli C, Chatenay C, Fanton L. Alpha-methyltryptamine and 5-(2-methylaminopropyl)-benzofuran (5-MAPB) fatal co-intoxication: case report and review of literature. Int J Legal Med 2024:10.1007/s00414-024-03236-w. [PMID: 38649548 DOI: 10.1007/s00414-024-03236-w] [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: 12/26/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
The scientific literature contains little reliable data regarding new psychoactive substances and designer drugs, making it difficult to assess toxic blood levels and potentially lethal threshold. Here, we report a fatal co-intoxication involving two uncommon drugs ‒ alpha-methyltryptamine (AMT) and 5-(2-methylaminopropyl)-benzofuran (5-MAPB) ‒ combined with exposure to benzodiazepines, ephedrine, and norephedrine. AMT and 5-MAPB were quantified using ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC/MS-MS), revealing concentrations of AMT 4690 ng/mL and 5-MAPB 101 ng/mL in postmortem peripheral blood. We additionally reviewed the literature to help interpret the likely roles of these molecules in the occurrence of death.
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Affiliation(s)
- Marie Epain
- Faculty of Medicine Lyon-Est, University of Lyon, UCBL1, Lyon, France.
- Service of Forensic Medicine, Hospices Civils de Lyon, Edouard Herriot Hospital, 5 Place d'Arsonval, Lyon Cedex 03, 69437, France.
| | - Nathalie Cartiser
- Service of Forensic Medicine, Hospices Civils de Lyon, Edouard Herriot Hospital, 5 Place d'Arsonval, Lyon Cedex 03, 69437, France
| | | | | | | | - Laurent Fanton
- Faculty of Medicine Lyon-Est, University of Lyon, UCBL1, Lyon, France
- Service of Forensic Medicine, Hospices Civils de Lyon, Edouard Herriot Hospital, 5 Place d'Arsonval, Lyon Cedex 03, 69437, France
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Mahdi T, Desmons A, Krasniqi P, Lacorte JM, Kapel N, Lamazière A, Fourati S, Eguether T. Effect of Stool Sampling on a Routine Clinical Method for the Quantification of Six Short Chain Fatty Acids in Stool Using Gas Chromatography-Mass Spectrometry. Microorganisms 2024; 12:828. [PMID: 38674773 PMCID: PMC11052040 DOI: 10.3390/microorganisms12040828] [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: 01/31/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Short chain fatty acids (SCFAs) are primarily produced in the caecum and proximal colon via the bacterial fermentation of undigested carbohydrates that have avoided digestion in the small intestine. Increasing evidence supports the critical role that SCFAs play in health and homeostasis. Microbial SCFAs, namely butyric acid, serve as a principal energy source for colonocytes, and their production is essential for gut integrity. A direct link between SCFAs and some human pathological conditions, such as inflammatory bowel disease, irritable bowel syndrome, diarrhea, and cancer, has been proposed. The direct measurement of SCFAs in feces provides a non-invasive approach to demonstrating connections between SCFAs, microbiota, and metabolic diseases to estimate their potential applicability as meaningful biomarkers of intestinal health. This study aimed to adapt a robust analytical method (liquid-liquid extraction, followed by isobutyl chloroformate derivatization and GC-MS analysis), with comparable performances to methods from the literature, and to use this tool to tackle the question of pre-analytical conditions, namely stool processing. We focused on the methodology of managing stool samples before the analysis (fresh stool or dilution in either ethanol/methanol, lyophilized stool, or RNAlater®), as this is a significant issue to consider for standardizing results between clinical laboratories. The objective was to standardize methods for future applications as diagnostic tools. In this paper, we propose a validated GC-MS method for SCFA quantification in stool samples, including pre- and post-analytical comparison studies that could be easily used for clinical laboratory purposes. Our results show that using lyophilization as a stool-processing method would be the best method to achieve this goal.
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Affiliation(s)
- Tarek Mahdi
- Hôpital Pitié Salpêtrière-Charles Foix, AP-HP, Service de Biochimie Endocrinienne et Oncologique, 75000 Paris, France
- Sorbonne Université, Inserm, UMR_S 1166, Research Institute of Cardiovascular Disease, Metabolism and Nutrition, 75000 Paris, France
| | - Aurore Desmons
- Centre de Recherche Saint-Antoine, Sorbonne Université, INSERM, AP-HP, Département Metomics, Hôpital Saint Antoine, 75000 Paris, France
| | - Pranvera Krasniqi
- Centre de Recherche Saint-Antoine, Sorbonne Université, INSERM, AP-HP, Département Metomics, Hôpital Saint Antoine, 75000 Paris, France
| | - Jean-Marc Lacorte
- Hôpital Pitié Salpêtrière-Charles Foix, AP-HP, Service de Biochimie Endocrinienne et Oncologique, 75000 Paris, France
- Sorbonne Université, Inserm, UMR_S 1166, Research Institute of Cardiovascular Disease, Metabolism and Nutrition, 75000 Paris, France
| | - Nathalie Kapel
- Hôpital Pitié Salpêtrière-Charles Foix, AP-HP, Service de Coprologie Fonctionnelle, 75000 Paris, France
- Université Paris Cité, Inserm, UMR_S 1139, 75000 Paris, France
- Paris Center for Microbiome Medicine, Federation Hospitalo-Universitaire, 75000 Paris, France
| | - Antonin Lamazière
- Centre de Recherche Saint-Antoine, Sorbonne Université, INSERM, AP-HP, Département Metomics, Hôpital Saint Antoine, 75000 Paris, France
- Paris Center for Microbiome Medicine, Federation Hospitalo-Universitaire, 75000 Paris, France
| | - Salma Fourati
- Hôpital Pitié Salpêtrière-Charles Foix, AP-HP, Service de Biochimie Endocrinienne et Oncologique, 75000 Paris, France
- Sorbonne Université, Inserm, UMR_S 1166, Research Institute of Cardiovascular Disease, Metabolism and Nutrition, 75000 Paris, France
| | - Thibaut Eguether
- Centre de Recherche Saint-Antoine, Sorbonne Université, INSERM, AP-HP, Département Metomics, Hôpital Saint Antoine, 75000 Paris, France
- Paris Center for Microbiome Medicine, Federation Hospitalo-Universitaire, 75000 Paris, France
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Dessì F, Varoni MV, Baralla E, Nieddu M, Pasciu V, Piras G, Lorenzoni G, Demontis MP. Contaminants of Emerging Concern: Antibiotics Research in Mussels from the Coasts of the Tyrrhenian Sea (Sardinia, Italy). Animals (Basel) 2024; 14:1205. [PMID: 38672353 PMCID: PMC11047641 DOI: 10.3390/ani14081205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/09/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Contaminants of emerging concern (CECs) are compounds found in several environmental compartments whose ubiquitous presence can cause toxicity for the entire ecosystem. Several personal care products, including antibiotics, have entered this group of compounds, constituting a major global threat. It is essential to develop simple and reliable methods by which to quantify these contaminants in several matrices. In this work, mussels were chosen as sentinel organisms to assess environmental pollution and the safety of bivalve mollusk consumption according to the "One Health perspective". A liquid chromatographic tandem mass spectrometry method (LC-MS/MS) was developed for the quantification of two macrolides, erythromycin (ERY) and azithromycin (AZI), in mussels. This new method was validated according to international guidelines, showing high selectivity, good recoveries (>60% for both of them), sensitivity, and precision. The method was successfully applied for ERY and AZI research in mussels farmed along the Sardinian coasts (Italy), demonstrating itself to be useful for routine analysis by competent authorities. The tested macrolides were not determined in the analyzed sites at concentrations above the limits of detection (LODs). These results demonstrate the food safety of mussels (as concerns the studied antibiotics) and a negligible amount of pollution derived from these drugs in the studied area.
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Affiliation(s)
- Filomena Dessì
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (F.D.); (M.V.V.); (V.P.); (M.P.D.)
| | - Maria Vittoria Varoni
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (F.D.); (M.V.V.); (V.P.); (M.P.D.)
| | - Elena Baralla
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (F.D.); (M.V.V.); (V.P.); (M.P.D.)
| | - Maria Nieddu
- Department of Medicine Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy;
| | - Valeria Pasciu
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (F.D.); (M.V.V.); (V.P.); (M.P.D.)
| | - Gabriella Piras
- Veterinary Public Health Institute of Sardinia, 07100 Sassari, Italy; (G.P.); (G.L.)
| | - Giuseppa Lorenzoni
- Veterinary Public Health Institute of Sardinia, 07100 Sassari, Italy; (G.P.); (G.L.)
| | - Maria Piera Demontis
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (F.D.); (M.V.V.); (V.P.); (M.P.D.)
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Bottinelli C, Baradian P, Poly A, Hoizey G, Chatenay C. Identification and quantification of both isomers of hexahydrocannabinol, (9R)-hexahydrocannabinol and (9S)-hexahydrocannabinol, in three different matrices by mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2024; 38:e9711. [PMID: 38342829 DOI: 10.1002/rcm.9711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/14/2024] [Accepted: 01/14/2024] [Indexed: 02/13/2024]
Abstract
CONTEXT Hexahydrocannabinol (HHC), a compound derived from synthetic production using cannabidiol (CBD) or delta-9-tetrahydrocannabinol (Δ9 -THC), has gained recent attention due to its presence in seized materials across Europe. Sold legally in various forms, HHC poses potential health risks, particularly as a legal alternative to THC in some countries. Despite its historical description in the 1940s, limited toxicology data, pharmacological understanding, and analytical methods for HHC exist. METHOD This study proposes analytical techniques using mass spectrometry to detect, identify, and quantify (9R)-HHC and (9S)-HHC, concurrently with THC and CBD in various matrices, including oral fluid, whole blood, and seized material. Three distinct methods were employed for different matrices: GC/MS for seized material, GC/MS/MS for whole blood, and UHPLC/MS/MS for oral fluid. Methods were validated qualitatively for oral fluid with a FLOQSwab® device and quantitatively in whole blood and seized material according to Peters et al's recommendations and ICH guidelines. RESULTS Validated methods were considered reliable in detecting and quantifying HHC isomers in terms of repeatability, reproducibility, and linearity with r2 systematically >0.992. These methods were applied to authentic cases, including seized materials and biological samples from traffic control (whole blood and oral fluid). In seized materials, (9R)-HHC levels ranged from 2.09% to 8.85% and (9R)-HHC/(9S)-HHC ratios varied from 1.36 to 2.68. In whole blood sample, (9R)-HHC and (9S)-HHC concentrations were, respectively, 2.38 and 1.39 ng/mL. For all analyzed samples, cannabinoids such as THC and CBD were also detected. CONCLUSION This research contributes analytical insights into differentiating and simultaneously analyzing (9R)-HHC and (9S)-HHC, using widely applicable mass spectrometric methods. The study emphasizes the need for vigilance among toxicologists, as new semisynthetic cannabinoids continue to emerge in Europe, with potential health implications. The findings underscore the importance of reliable analytical methods for monitoring these compounds in forensic and clinical settings.
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Hansen M, Havnen H, Andreassen TN, Spigset O, Hegstad S. Quantitative determination of R/S-methadone in human serum using ultra-high performance supercritical fluid chromatography-tandem mass spectrometry: A method for routine use. Drug Test Anal 2024. [PMID: 38600723 DOI: 10.1002/dta.3693] [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: 07/12/2023] [Revised: 03/12/2024] [Accepted: 03/20/2024] [Indexed: 04/12/2024]
Abstract
Methadone has two enantiomers, which exhibit differences in pharmacological effects, with R-methadone being the active and S-methadone the inactive enantiomer. A robust, simple and rapid method for chiral separation of the two enantiomers in serum samples using ultra-high performance supercritical fluid chromatography-tandem mass spectrometry (UHPSFC-MSMS) has been developed and validated. Enantiomeric separation was achieved using a Chiralpak IH-3 column with a mobile phase consisting of CO2 and 30mM ammonium acetate in methanol/water (98/2, v/v). Runtime was 4 minutes. Sample preparation was semi-automated using a Hamilton ML Star robot with protein precipitation, and phospholipid removal was carried out using a Waters OSTRO™ 96-well plate. The calibration range was 50.0-1,500 nM for each enantiomer. The between-assay relative standard deviations were in the range of 1.2-3.6%. Matrix effects ranged from 99% to 115% corrected with internal standard. The method has been implemented in our laboratory and has proven to be a robust and reliable method for determining the ratio of R/S-methadone in authentic patient samples.
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Affiliation(s)
- Miriam Hansen
- Department of Clinical Pharmacology, St. Olav University Hospital, Trondheim, Norway
| | - Hilde Havnen
- Department of Clinical Pharmacology, St. Olav University Hospital, Trondheim, Norway
| | | | - Olav Spigset
- Department of Clinical Pharmacology, St. Olav University Hospital, Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Solfrid Hegstad
- Department of Clinical Pharmacology, St. Olav University Hospital, Trondheim, Norway
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12
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Herzog J, Skopp G, Musshoff F. Monitoring of phosphatidylethanol in dried blood spots and of ethyl glucuronide in hair over 6 months of alcohol consumption. Drug Test Anal 2024; 16:359-368. [PMID: 37488976 DOI: 10.1002/dta.3553] [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: 03/27/2023] [Revised: 06/29/2023] [Accepted: 07/10/2023] [Indexed: 07/26/2023]
Abstract
The aim of this study was to monitor seven phosphatidylethanol (PEth) homologues in dried blood spots (DBS) and ethyl glucuronide in hair (EtGH) over a 6-month period of drinking while documenting the daily drinks (amount and type) of alcohol via app. A total of 23 volunteers (12 males and 11 females) aged 19-54 years were enrolled. At four-weekly intervals, capillary blood to create DBS and after 3 and 6 months, respectively, a strand of hair (proximal, 3 cm) was collected. Analyses of EtGH and PEth homologues were performed using liquid chromatography-tandem mass spectrometry. All participants consumed alcohol during the 6 months. Only one participant tested negative for both PEth and EtGH. Eight participants had PEth 16:0/18:1 concentrations between 20 and <210 ng/mL (mean: 45.6 ng/mL) but EtGH concentrations below 5 pg/mg. PEth 16:0/18:1 concentrations between 20 and <210 ng/mL and EtGH concentrations between 5 and <30 pg/mg were assigned to eight subjects, uniformly matching them in the category of socially accepted drinking behavior. Four test subjects exceeded the cutoff for social drinking behavior in both PEth 16:0/18:1 (mean: 528 ng/mL) and EtGH (mean: 84.5 pg/mg). Two participants exceeded the threshold for PEth 16:0/18:1 of 210 ng/mL in blood but remained below 30 pg EtG/mg hair. PEth showed a higher detection rate for alcohol consumption than EtGH did. Moreover, PEth concentrations reacted quickly to changes in drinking behavior, whereas EtGH concentrations remained similar over time.
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13
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Shukla S, Khanna S, Gani Mir TU, Dalal J, Sankhyan D, Khanna K. Emerging global trends and development in forensic toxicology: A review. J Forensic Leg Med 2024; 103:102675. [PMID: 38522117 DOI: 10.1016/j.jflm.2024.102675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/02/2024] [Accepted: 03/12/2024] [Indexed: 03/26/2024]
Abstract
This study conducts a comprehensive analysis of forensic toxicology research trends, publication patterns, author's contributions, and collaboration. Utilizing the Scopus database, we scrutinized 3259 articles across 348 journals spanning from 1975 to 2023. Analysis employed diverse software tools such as VOSviewer, RStudio, MS Excel, and MS Access to dissect various publication aspects. We observed a notable surge in publications post-2007, indicating heightened research interest. Leading contributors included the United States, Germany, and Italy, with Logan B.K. emerging as the most prolific author. Forensic Science International stood out as the primary journal, publishing 888 articles and accruing significant citations. Keyword co-occurrences such as "forensic toxicology," "forensic science," and "toxicology" underscored core thematic areas in the field. Moreover, extensive research collaboration, especially among Western nations in Europe, was evident. This study underscores the imperative for enhanced collaboration between developing and developed nations to foster further advancements in forensic science. Strengthened partnerships can catalyze innovation, facilitate knowledge dissemination, and address emerging challenges, thereby propelling the field of forensic toxicology toward new frontiers of discovery and application.
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Affiliation(s)
- Saurabh Shukla
- Department of Forensic Science, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, 144411, Punjab, India.
| | | | - Tahir Ul Gani Mir
- Department of Forensic Science, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, 144411, Punjab, India
| | - Jyoti Dalal
- Department of Forensic Science, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, 144411, Punjab, India
| | - Deeksha Sankhyan
- Department of Forensic Science, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, 144411, Punjab, India
| | - Kushagra Khanna
- Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur, 56000, Malaysia
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14
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Wiedfeld C, Skopp G, Musshoff F. Single hair analysis for gamma-hydroxybutyric acid-Method optimization, validation, and application. Drug Test Anal 2024. [PMID: 38517060 DOI: 10.1002/dta.3683] [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: 11/16/2023] [Revised: 02/23/2024] [Accepted: 03/05/2024] [Indexed: 03/23/2024]
Abstract
As gamma-hydroxybutyric acid (GHB) underlies fast metabolization, its determination from hair may presumably offer a detection window superior to that of body fluids. Due to the wide range of endogenous concentration levels, the evidence of an exogenous ingestion is challenging. As already shown for other drugs, the temporal resolution obtained by applying single hair microanalysis provides further information. Therefore, a method for the extraction and quantification of GHB in 2-mm hair segments (seg) was optimized and validated (limit of detection [LOD]: 2.5 pg/seg, lower limit of quantification [LLOQ]: 5 pg/seg), and five single hairs were examined, each for three non-users and for three (alleged) users. A major challenge was the choice of appropriate extraction tubes without remains of GHB. In two samples from non-users, GHB could not or could only be detected in trace amounts. In the third sample, concentrations between the LOD and 31.1 pg/seg (mean: 9.5, median: 8.4; each pg/seg) were detected with decreasing values towards the tips. In two samples of persons with assumed GHB intake, maximum concentrations of 6.8 and 30.7 pg/seg were measured, but no significant concentration peaks indicating a single ingestion could be observed. The third sample showed concentrations of 7.6-55.2 pg/seg (mean: 28.8, median: 29.6; each pg/seg). In this case, the obtained profiles showing at least two reproducible concentration maxima between 20 and 40 mm point to an ingestion of GHB. The concentration profiles from single hairs were reproducible in each case, reflecting the concentration course of routine 1-cm segmental analysis. These are the first results published on GHB testing in segmented single hairs, and the results must be verified further.
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Affiliation(s)
| | - Gisela Skopp
- Forensic Toxicological Center (FTC) Munich, Munich, Germany
| | - Frank Musshoff
- Forensic Toxicological Center (FTC) Munich, Munich, Germany
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15
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Nsairat H, Al-Samydai A, El-Tanani M, Shakya AK, Ahmad S, Alsotari S, Alshaer W, Shanneir A, Saket MM, Arafat TA. In vitro dissolution equivalence of Jordanian sildenafil generics via validated, stability-indicating HPLC method. Bioanalysis 2024; 16:369-384. [PMID: 38497721 DOI: 10.4155/bio-2023-0257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 02/23/2024] [Indexed: 03/19/2024] Open
Abstract
This study was conducted to compare dissolution profiles of four Jordanian registered sildenafil (SDF) products to the originator. Dissolution samples were analyzed utilizing a validated and stability-indicating HPLC method in human plasma. Validation was performed for specificity, linearity, limit of detection, lower limit of quantification, precision, trueness and stability. SDF was extracted from plasma samples using liquid-liquid extraction. The analysis was performed utilizing isocratic elution on C18 column with 1.0 ml/min flow rate. The regression value was ∼0.999 over 3 days with drug recovery between 86.6 to 89.8%with 10 ng/ml lower limit of quantitation. This method displayed a good selectivity of SDF with improved stability under various conditions. The method was used for SDF quantification in dissolution medium. Similarity factors for local products varied according to the used mediums, but all SDF local products passed the dissolution in vitro test since all of them showed a released of >85% after 60 min at the dissolution mediums.
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Affiliation(s)
- Hamdi Nsairat
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
| | - Ali Al-Samydai
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
| | - Mohamed El-Tanani
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
- College of Pharmacy, Ras Al Khaimah Medical and Health Sciences University, Ras Al Khaimah, 11172, United Arab Emirates
| | - Ashok K Shakya
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
| | - Somaya Ahmad
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
| | | | - Walhan Alshaer
- Cell Therapy Center, University of Jordan, Amman, 11942, Jordan
| | | | - Munib M Saket
- Department of Pharmaceutical and Chemical Engineering, School of Applied Medical Sciences, German Jordanian University, PO Box 35247 Amman, 11180, Jordan
| | - Tawfiq A Arafat
- Jordan Center for Pharmaceutical Research, PO Box 950435, Amman, 11195, Jordan
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16
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Gonkowski S, Tzatzarakis M, Vakonaki E, Meschini E, Könyves L, Rytel L. Biomonitoring of parabens in wild boars through hair samples analysis. PLoS One 2024; 19:e0297938. [PMID: 38381722 PMCID: PMC10880979 DOI: 10.1371/journal.pone.0297938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/15/2024] [Indexed: 02/23/2024] Open
Abstract
Parabens are compounds widely utilized in the industry as preservative additives to personal care products, cosmetics and food. They pollute the environment and penetrate to the living organisms through the digestive tract, respiratory system and skin. Till now the knowledge about exposure of terrestrial wild mammals to parabens is extremely scarce. Therefore, this study for the first time assessed the concentration levels of five parabens commonly used in industry (methylparaben-MeP, ethylparaben-EtP propylparaben-PrP, benzylparaben -BeP and butylparaben-BuP). Substances have been analyzed in hair samples collected from wild boars using liquid chromatography-mass spectrometry (LC-MS) method. The hair is a matrix, which allows to study long-term exposure of organisms to parabens. During this study MeP was noted in 96.3% of samples with mean 88.3±72.9 pg/mg, PrP in 87.0% of samples with mean 8.5±3.3 pg/mg, BeP in 44.4% of samples with mean 17.2±12.3 pg/mg and EtP in 11.1% of samples with mean 17.2±4.8 pg/mg. In turn BuP was noted only in 3.7% of samples with concentration levels below limit of quantification (2.6 pg/mg). Statistically significant intragender differences in parabens levels have not been noted. Only BeP concentration levels depended on industrialization and density of human population of area, where the animals lived. This study indicates that wild boars are exposed to parabens, especially to MeP and PrP, and analysis of the hair seems to be a useful tool of biomonitoring of parabens in wild mammals.
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Affiliation(s)
- SÅ‚awomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Manolis Tzatzarakis
- Laboratory of Toxicology, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Elena Vakonaki
- Laboratory of Toxicology, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Elena Meschini
- Laboratory of Toxicology, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - László Könyves
- Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine, Budapest, Hungary
| | - Liliana Rytel
- Department and Clinic of Internal Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
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17
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Kim J, Choe S, Shin I, Jang M, Lee J, Beom Han S. Analytical methods for detecting butane, propane, and their metabolites in biological samples: Implications for inhalant abuse detection. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1234:124011. [PMID: 38277722 DOI: 10.1016/j.jchromb.2024.124011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/28/2023] [Accepted: 01/10/2024] [Indexed: 01/28/2024]
Abstract
Worldwide, various inhalants are widely abused for recreational purposes, with butane and propane emerging as among the most commonly misused volatile substances, posing a significant risk of sudden death. The rapid elimination and oxidation of these highly volatile compounds upon inhalation necessitate the identification of butane and propane along with their metabolites in biological samples. Hence, the primary objective of this study is twofold: firstly, to establish a method for analyzing butane, propane, and metabolites, and secondly, to demonstrate the detection window and exposure indicators associated with the inhalation of butane and propane. In pursuit of this objective, we developed analytical methods for the determination of isobutane, n-butane, propane, and their nine metabolites in both blood and urine. Headspace-gas chromatography-mass spectrometry (GC-MS) and solid-phase microextraction-GC-MS were employed for the analyses, demonstrating acceptable precision and accuracy. An animal study revealed that isobutane and n-butane were only detectable below the limit of quantification (LOQ) in rat blood 5Â min after exposure. Meanwhile, the three major metabolites-2-methyl-2-propanol, 2-butanol, and 2-butanone-were observed 5Â min after exposure but persisted in rat urine even 5Â h post-exposure. Additionally, human urine samples identified other metabolites, including acetone, acetoin, and 2,3-butanediol isomers. The presence of specific metabolites corresponding to each inhalant confirmed the abuse of butane and propane. This comprehensive approach provides valuable insights into the detection and assessment of inhalation to these volatile substances.
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Affiliation(s)
- Jihyun Kim
- Forensic Toxicology & Chemistry Division, Seoul Institute, National Forensic Service, Seoul 08036, Republic of Korea; Department of Pharmaceutical Analysis, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Sanggil Choe
- Forensic Toxicology Division, National Forensic Service, Wonju 26430, Republic of Korea
| | - Ilchung Shin
- Forensic Toxicology & Chemistry Division, Seoul Institute, National Forensic Service, Seoul 08036, Republic of Korea
| | - Moonhee Jang
- Forensic Toxicology Division, National Forensic Service, Wonju 26430, Republic of Korea
| | - Jaesin Lee
- Forensic Toxicology Division, National Forensic Service, Wonju 26430, Republic of Korea
| | - Sang Beom Han
- Department of Pharmaceutical Analysis, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea.
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18
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Yang S, Wen D, Zheng F, Pu S, Chen Z, Chen M, Di B, Liu W, Shi Y. Simple and rapid detection of three amatoxins and three phallotoxins in human body fluids by UPLC-MS-MS and its application in 15 poisoning cases. J Anal Toxicol 2024; 48:44-53. [PMID: 37929913 DOI: 10.1093/jat/bkad081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 10/10/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023] Open
Abstract
Amatoxins and phallotoxins are toxic cyclopeptides found in the genus Amanita and are among the predominant causes of foodborne sickness and poisoning-related fatalities in China. This study introduces and validates a simple, rapid and cost-effective ultra-performance liquid chromatography-mass spectrometry method for the simultaneous determination and quantification of α-amanitin, β-amanitin, γ-amanitin, phallisacin, phallacidin and phalloidin in human blood and urine. Quick therapeutic decision-making is supported by a 9 min chromatographic separation performed on a Waters Acquity UPLC HSS T3 column (100 mm × 2.1 mm, 1.8 µm) using a gradient of high-performance liquid chromatography (HPLC)-grade water and methanol:0.005% formic acid. The analyte limit of quantification was 1-3 ng/mL in blood and 0.5-2 ng/mL in urine. Calibrations curves, prepared by spiking drug-free blood and urine, demonstrated acceptable linearity with mean correlation coefficients (r) greater than 0.99 for all phallotoxins and amatoxins. Acceptable intraday and interday precision (relative standard deviation <15%) and accuracy (bias, -4.8% to 13.0% for blood and-9.0% to 14.7% for urine) were achieved. The validated method was successfully applied to analyze 9 blood samples and 2 urine samples testing positive for amatoxins and/or phallotoxins. Amatoxins and/or phallotoxins were identified in each whole blood sample at a range of 1.12-5.63 ng/mL and in two urine samples from 1.01-9.27 ng/mL. The method has the benefits of simple sample preparation (protein precipitation) and wide analyte coverage, making it suitable for emergency quantitative surveillance toxicological analysis in clinics and forensic poisoning practice.
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Affiliation(s)
- Shuo Yang
- Academy of Forensic science, Shanghai Key Laboratory of Forensic Medicine, No. 1347 Guangfuxi Road, Shanghai 200063, China
- School of Pharmacy, China Pharmaceutical University, No. 639 Longmian Avenue, Nanjing 210009, China
| | - Di Wen
- College of Forensic Medicine, Hebei Medical University, Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, No. 361 Zhongshan East Road, Shijiazhuang 050017, China
| | - Fenshuang Zheng
- Affiliated Hospital of Yunnan University (Yunnan Second People's Hospital, Yunnan Eye Hospital), No. 176 Qingnian Road, Kunming 650021, China
| | - Shanbai Pu
- Affiliated Hospital of Yunnan University (Yunnan Second People's Hospital, Yunnan Eye Hospital), No. 176 Qingnian Road, Kunming 650021, China
| | - Zhuonan Chen
- Academy of Forensic science, Shanghai Key Laboratory of Forensic Medicine, No. 1347 Guangfuxi Road, Shanghai 200063, China
- School of Pharmacy, China Pharmaceutical University, No. 639 Longmian Avenue, Nanjing 210009, China
| | - Mobing Chen
- Academy of Forensic science, Shanghai Key Laboratory of Forensic Medicine, No. 1347 Guangfuxi Road, Shanghai 200063, China
- School of Pharmacy, China Pharmaceutical University, No. 639 Longmian Avenue, Nanjing 210009, China
| | - Bin Di
- School of Pharmacy, China Pharmaceutical University, No. 639 Longmian Avenue, Nanjing 210009, China
| | - Wei Liu
- Academy of Forensic science, Shanghai Key Laboratory of Forensic Medicine, No. 1347 Guangfuxi Road, Shanghai 200063, China
| | - Yan Shi
- Academy of Forensic science, Shanghai Key Laboratory of Forensic Medicine, No. 1347 Guangfuxi Road, Shanghai 200063, China
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Skov K, Johansen SS, Linnet K, Nielsen MKK. Automated enzymatic hydrolysis of urine samples for improved systematic toxicological analysis of drug-facilitated sexual assault cases. Drug Test Anal 2024. [PMID: 38263626 DOI: 10.1002/dta.3640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/25/2024]
Abstract
Drug-facilitated sexual assault (DFSA) is characterized by victim incapacitation due to intoxicating substances. Detection of single drug exposure from DFSA requires a systematic toxicological analysis strategy including sensitive methods covering a broad spectrum of substances. The aim of this study was to develop and validate an UHPLC-MS/MS screening method for analysis of samples from DFSA cases and incorporate an automated enzymatic pre-treatment of urine samples into a robotic sample preparation for an efficient laboratory workflow. The screening method included 144 drugs of abuse, pharmaceuticals, and metabolites relevant to DFSA. The use of a recombinant enzyme showed an efficient glucuronide hydrolysis with an average parent drug recovery of 97%. Investigation of matrix effect showed no pronounced ion enhancement or suppression for most analytes (96%), and extraction recovery was above 80% for 97% of analytes. Process efficiency ranged from 50% to 138% for most analytes. The LODs ranged from 0.0001 mg/L to 2 mg/L depending on analyte, and most analytes met the SOFT recommended minimum performance limits. The validated method was applied to authentic suspected DFSA cases (n = 38). Results showed that drugs of abuse, benzodiazepines, and antidepressants were most commonly found in suspected DFSA cases. Incorporation of an automated enzymatic hydrolysis step during sample preparation enables a fast and simple workflow for simultaneous analysis of blood and urine samples for an improved systematic toxicological analysis strategy for DFSA cases.
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Affiliation(s)
- Kathrine Skov
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sys Stybe Johansen
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kristian Linnet
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marie Katrine Klose Nielsen
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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20
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He TF, Zhu HH, Lin XW, Tian YY, Sun LM, Guan X, Zhang HY, Tan L, Wang SC. A highly efficient liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay for etomidate and etomidate acid in urine, liver and kidney. J Pharmacol Toxicol Methods 2024; 125:107490. [PMID: 38141867 DOI: 10.1016/j.vascn.2023.107490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/16/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Etomidate (ETO) is a highly-efficient drug that can induce anesthesia with increasing doses, thus subject to strict regulation. However, an accurate and efficient method for ETO intake detection is currently lacking. Therefore, this study developed a straightforward sample preparation method using LC-MS/MS to analyze ETO and its primary metabolite, etomidate acid (ETA), in urine, liver, and kidney samples. Snap frozen pig liver and kidney samples were ground into a fine powder. Then, all the biological samples, including human urine, pig liver and kidney tissues, were deproteinized using acetonitrile and filtered for analysis. The separation was achieved in 9.01 min with gradient elution. The calibration curves ranged from 0.5 to 50 ng/mL for ETO in urine and 0.5 to 50 ng/g in liver and kidney, while the curves ranged from 1 to 100 ng/mL for ETA in urine and 1 to 100 ng/g in liver and kidney. The correlation coefficients (R2) were greater than 0.9957. The Limit of detection (LOD) and limit of quantitation (LOQ) for ETO were 0.2 and 0.5 ng/mL in urine samples and 0.2 and 0.5 ng/g in liver and kidney samples, respectively. For ETA, the LOD and LOQ were 0.5 and 1 ng/mL in urine samples and 0.5 and 1 ng/g in liver and kidney samples. This method was assessed by validation parameters, including selectivity, intra- and inter-day precision and accuracy, recovery, matrix effect, dilution integrity and stability. It was successfully applied to a practical case, revealing ETO and ETA concentrations in urine of 1.01 and 5.58 μg/mL, in liver samples of 12.30 and 1.13 μg/g, and in kidney samples of 6.95 and 4.23 μg/g. This suggests that the method is suitable for routine forensic detection of illicit ETO abuse.
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Affiliation(s)
- Tian-Fu He
- Guangzhou Forensic Science Institute, Guangzhou 510000, China.
| | - Huan-Hui Zhu
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Xian-Wen Lin
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Yuan-Yuan Tian
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Li-Min Sun
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Xu Guan
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Hai-Yan Zhang
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Li Tan
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
| | - Song-Cai Wang
- Guangzhou Forensic Science Institute, Guangzhou 510000, China
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21
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Maplesden J, Greene S, Syrjanen R, Di Rago M, Schumann J. An intoxication involving 2-methyl AP-237 and AP-238 from Victoria, Australia: Case report. Drug Test Anal 2024; 16:93-98. [PMID: 37253676 DOI: 10.1002/dta.3524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/01/2023]
Affiliation(s)
| | - Shaun Greene
- Department of Emergency Medicine, Austin Hospital, Melbourne, Australia
- Victorian Poisons Information Centre, Austin Health, Melbourne, Australia
- Department of Critical Care, University of Melbourne, Melbourne, Australia
| | - Rebekka Syrjanen
- Victorian Poisons Information Centre, Austin Health, Melbourne, Australia
- Department of Forensic Medicine, Monash University, Melbourne, Australia
| | - Matthew Di Rago
- Victorian Institute of Forensic Medicine, Monash University, Melbourne, Australia
| | - Jennifer Schumann
- Department of Forensic Medicine, Monash University, Melbourne, Australia
- Victorian Institute of Forensic Medicine, Monash University, Melbourne, Australia
- Monash Addiction Research Centre, Melbourne, Australia
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22
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Matuszewski S, MÄ…dra-Bielewicz A. Field validation of post-mortem interval estimation based on insect development. Part 1: Accuracy gains from the laboratory rearing of insect evidence. Forensic Sci Int 2024; 354:111902. [PMID: 38088001 DOI: 10.1016/j.forsciint.2023.111902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 11/25/2023] [Accepted: 11/29/2023] [Indexed: 01/12/2024]
Abstract
There is a consensus that forensic methods must be valid. The high quality of the method may be fully demonstrated only through validation. Unfortunately, there are very few experimental or casework validations of entomological methods for estimating post-mortem interval (PMI). Here, we present the first part of the results from the field validation of minimum PMI (PMImin) estimates based on insect development. From eight pig carcasses (24-46.4Â kg) exposed in a forest habitat of Western Poland, one every one or two months, we collected insect evidence with standard entomological techniques. Using weather station temperatures and the thermal summation method, PMImin was estimated based on insect life stages that were reared under controlled laboratory conditions. Through rearing an insect until the next developmental landmark (or until eclosion), its age at the time of collection (and eventually PMImin) may be estimated by subtracting thermal accumulation in the laboratory from the corresponding thermal constant. We hypothesized that rearing insect evidence significantly improves the accuracy of PMImin compared to the estimation based on non-reared insect evidence. The results clearly supported this hypothesis. However, the accuracy significantly increased only in the case of these insects that developed normally during rearing. When their development in the laboratory was prolonged, PMImin was significantly less accurate. For the normal development sample the accuracy improved in all species and life stages. The largest accuracy gains from rearing were recorded for Calliphora vomitoria (Diptera: Calliphoridae) and Stearibia nigriceps (Diptera: Piophilidae). Moreover, when puparia or third instar larvae were reared, gains were larger than in the case of earlier life stages. In conclusion, this study demonstrated that the method of rearing insect evidence to improve the accuracy of PMImin is valid. However, it needs to be used with caution, since substantial part of the evidence may die or slow down their development in the laboratory, which violates assumptions of the method.
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Affiliation(s)
- Szymon Matuszewski
- Laboratory of Criminalistics, Adam Mickiewicz University, Święty Marcin 90, 61-809 Poznań, Poland; Wielkopolska Centre for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland.
| | - Anna MÄ…dra-Bielewicz
- Laboratory of Criminalistics, Adam Mickiewicz University, Święty Marcin 90, 61-809 Poznań, Poland; Wielkopolska Centre for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
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23
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Gonkowski S, Tzatzarakis M, Vakonaki E, Meschini E, Rytel L. Exposure assessment to bisphenol A (BPA) and its analogues bisphenol S (BPS) and bisphenol F (BPF) in wild boars by hair analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167076. [PMID: 37714361 DOI: 10.1016/j.scitotenv.2023.167076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 08/16/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
Bisphenols are widely used in various branches of industry for the production of plastics. They penetrate to the natural environment and thus living organisms. As endocrine disruptors, bisphenols have adverse effects on various internal organs and systems. Contrary to humans, the knowledge of the exposure of wild terrestrial mammals to bisphenols is extremely limited. Therefore, this study for the first time assessed the exposure level of wild boars to three bisphenols commonly used in industry (i.e. bisphenol A - BPA, bisphenol S - BPS and bisphenol F - BPF) using hair sample analysis in liquid chromatography-mass spectrometry (LC-MS). The presence of BPA and/or BPS has been noted in the samples collected from >80 % of animals included in the study (n = 54), while the presence of BPF was not found in any sample. At least one of the bisphenols was present in every sample tested. Mean concentrations of BPA and BPS in the hair of wild boars were 151.40 ± 135.10 pg/mg dry weight (dw.) and 29.40 ± 36.97 pg./mg dw, respectively. Concentrations of BPA and BPS in females were statistically higher than in males (p < 0.05). Moreover, statistically significantly higher concentration levels of BPA (and not BPS) in the areas with higher degree of industrialization and higher human population density were also found. This is the first study concerning the use of hair samples to assess the exposure of wild terrestrial mammals to bisphenols. The obtained results show that an analysis of the hair may be a useful tool of biomonitoring bisphenols in wild animals. The presence of BPA and BPS in wild boar hair in relatively high concentration also suggests that these substances may have an influence on the health status not only in humans and aquatic animals, but also in wild terrestrial mammals. However, many aspects connected with this issue are not clear and require further study.
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Affiliation(s)
- SÅ‚awomir Gonkowski
- Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-957 Olsztyn, Poland
| | - Manolis Tzatzarakis
- Laboratory of Toxicology, School of Medicine, University of Crete, 71003 Heraklion, Crete, Greece
| | - Elena Vakonaki
- Laboratory of Toxicology, School of Medicine, University of Crete, 71003 Heraklion, Crete, Greece
| | - Elena Meschini
- Laboratory of Toxicology, School of Medicine, University of Crete, 71003 Heraklion, Crete, Greece
| | - Liliana Rytel
- Department and Clinic of Internal Diseases, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowski Str. 14, 10-718 Olsztyn, Poland.
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24
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Yishai Aviram L, Dagan S, Hindi A, Chapman S, Gez R, Drug E. Monitoring Exposure to Five Chemical Warfare Agents Using the Dried Urine Spot Technique and Liquid Chromatography-Mass Spectrometry/Mass Spectrometry-In Vivo Determination of Sarin Metabolite in Mice. Molecules 2023; 28:7687. [PMID: 38067417 PMCID: PMC10707994 DOI: 10.3390/molecules28237687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/05/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
Dried urine spot (DUS) is a micro-sample collection technique, known for its advantages in handling, storage and shipping. It also uses only a small volume of urine, an essential consideration in working with small animals, or in acute medical situations. Alkyl-phosphonic acids are the direct and indicative metabolites of organophosphorus chemical warfare agents (OP-CWAs) and are present in blood and urine shortly after exposure. They are therefore crucially important for monitoring casualties in war and terror scenarios. We report here a new approach for the determination of the metabolites of five CWAs in urine using DUS. The method is based on a simple and rapid sample preparation, using only 50 µL of urine, spotted and dried on DBS paper, extracted using 300 µL methanol/water and analyzed via targeted LC-MS/MS. The detection limits for the five CWAs, sarin (GB), soman (GD), cyclosarin (GF), VX and RVX in human urine were from 0.5 to 5 ng/mL. Recoveries of (40-80%) were obtained in the range of 10-300 ng/mL, with a linear response (R2 > 0.964, R > 0.982). The method is highly stable, even with DUS samples stored up to 5 months at room temperature before analysis. It was implemented in a sarin in vivo exposure experiment on mice, applied for the time course determination of isopropyl methylphosphonic acid (IMPA, sarin hydrolysis product) in mice urine. IMPA was detectable even with samples drawn 60 h after the mice's (IN) exposure to 1 LD50 sarin. This method was also evaluated in a non-targeted screening for multiple potential CWA analogs (LC-Orbitrap HRMS analysis followed by automatic peak detection and library searches). The method developed here is applicable for rapid CWA casualty monitoring.
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Affiliation(s)
- Lilach Yishai Aviram
- Department of Analytical Chemistry, Israel Institute for Biological Research (IIBR), Ness Ziona 7410001, Israel; (S.D.); (A.H.); (S.C.); (R.G.); (E.D.)
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25
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Nozawa H, Minakata K, Hasegawa K, Yamagishi I, Miyoshi N, Yuyama K, Suzuki M, Kitamoto T, Kondo M, Suzuki O. Quantification of risperidone and paliperidone by liquid chromatography-tandem mass spectrometry in biological fluids and solid tissues obtained from two deceased using the standard addition method. Leg Med (Tokyo) 2023; 69:102340. [PMID: 37945391 DOI: 10.1016/j.legalmed.2023.102340] [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: 08/07/2023] [Revised: 10/15/2023] [Accepted: 10/19/2023] [Indexed: 11/12/2023]
Abstract
Risperidone (RIS) is an atypical antipsychotic agent and its 9-hydroxylated metabolite named paliperidone (PAL) also has pharmacological properties similar to that of RIS. Quantifications of RIS and PAL in authentic human biological fluids and solid tissues by liquid chromatography (LC)-tandem mass spectrometry (MS/MS) have not been reported yet although those in plasma (and blood) were reported abundantly. In the present work, a quantification method for RIS and PAL based on the standard addition method was devised and validated for the human fluid and solid tissue specimens. RIS and PAL in biological fluids were quantified only after their dilution and deproteinization. The concentrations of RIS and PAL in the heart whole blood, pericardial fluid, stomach contents, bile, urine, liver, kidney and cerebrum were determined for a deceased who had been treated with RIS therapeutically, and also a deceased who had ingested RIS with other drugs intentionally. To our knowledge, this is the first report on the quantification of RIS and PAL by LC-MS/MS in the authentic human tissues and biological fluids.
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Affiliation(s)
- Hideki Nozawa
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan.
| | - Kayoko Minakata
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Koutaro Hasegawa
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Itaru Yamagishi
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Naotomo Miyoshi
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Kenta Yuyama
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Masako Suzuki
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Takuya Kitamoto
- Advanced Research Facilities and Services, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Minako Kondo
- Advanced Research Facilities and Services, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
| | - Osamu Suzuki
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu 431-3192, Japan
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26
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Haas C, Salzmann AP, Binz TM, Staubli G, Seiler M, Steuer AE. Analytical description of adolescent binge drinking patients. BMC Pediatr 2023; 23:512. [PMID: 37845619 PMCID: PMC10577939 DOI: 10.1186/s12887-023-04325-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 09/23/2023] [Indexed: 10/18/2023] Open
Abstract
BACKGROUND Binge drinking is a widespread health compromising behavior among adolescents and young adults, leading to significant health problems, injuries and mortality. However, data on alcohol consumption is often unreliable, as it is mainly based on self-reporting surveys. In this five-year study (2014-2019) at the University Children's Hospital Zurich, we analyzed blood samples from adolescent binge drinking patients to investigate blood alcohol concentrations (BACs), co-ingestion of drugs, assess compliance between self-reported and measured substance use, and test for genetic components of innate alcohol tolerance. Furthermore, hair analysis was performed to retrospectively access drug exposure and to evaluate the potential of hair analysis to assess binge drinking. METHODS In a prospective, single-center study, patients with alcohol intoxications aged 16 years and younger were included. Blood and hair samples were analyzed by sensitive liquid chromatography - tandem mass spectrometry drug analysis. HTTLPR genotyping was performed with PCR and fragment analysis. RESULTS Among 72 cases, 72 blood and 13 hair samples were analyzed. BACs ranged from 0.08-3.20‰ (mean 1.63‰, median 1.60‰), while a mean concentration of 3.64 pg/mg hair (median 3.0 pg/mg) of the alcohol marker ethyl glucuronide (EtG) was detected in eleven hair samples, providing no evidence of chronic excessive drinking. In 47% of the cases, co-ingested drugs were qualitatively detected next to ethanol, but only 9% of the detected drugs had blood concentrations classified as pharmacologically active. Cannabis consumption (22%) and stimulant intake (16%) were the most frequently observed drugs. Compliance between patients' statements and measured substances matched well. Although we investigated the genetic contribution to innate alcohol tolerance via the 5-HTTLPR polymorphism, the diverse genetic background of the cohort and small sample size did not allow any conclusions to be drawn. CONCLUSION Almost half of our binge drinking patients tested positive for other substances, primarily cannabis. We anticipate that our study enhances understanding of consumption behavior of young people and encourage continued efforts to address the harmful effects of binge drinking and co-occurring substance use.
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Affiliation(s)
- Cordula Haas
- Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland.
| | | | - Tina Maria Binz
- Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Georg Staubli
- Pediatric Emergency Department and Children's Research Centre, University Children's Hospital Zurich, Zurich, Switzerland
| | - Michelle Seiler
- Pediatric Emergency Department and Children's Research Centre, University Children's Hospital Zurich, Zurich, Switzerland
| | - Andrea Eva Steuer
- Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
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27
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Usui K, Kubota E, Kobayashi H, Fujita Y, Hatanaka K, Kamijo Y, Funayama M, Mimasaka S. Detection of major psychoactive compounds (safrole, myristicin, and elemicin) of nutmeg in human serum via GC-MS/MS using MonoSpin® extraction: Application in a nutmeg poisoning case. J Pharm Biomed Anal 2023; 234:115565. [PMID: 37453146 DOI: 10.1016/j.jpba.2023.115565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/16/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Nutmeg is an inexpensive, readily available spice used in a variety of recipes. However, the use of nutmeg powder as a recreational drug for its hallucinogenic effects is resulting in an increase in overdose rates. We encountered a male patient being hospitalized after ingesting 75 g of commercially available nutmeg powder with the intent of committing suicide. There are no available reports documenting the toxic or comatose-fatal blood concentrations or time-course of drug action in cases of nutmeg poisoning. Therefore, to improve patient management, we endeavored to determine the blood serum levels and time-course of the major psychoactive compounds (safrole, myristicin, and elemicin) present in nutmeg. We designed a simple and reliable method using the MonoSpin® extraction kit and gas chromatography-tandem mass spectrometry to detect the presence of these psychoactive compounds in human serum. The method had detection and quantitation limits of 0.14-0.16 and 0.5 ng/mL (lowest calibration points), respectively. The calibration curves displayed excellent linearity (0.996-0.997) for all three compounds at 0.5-300 ng/mL blood concentrations. The intra- and inter-day precision values for quality assurance were in the ranges of 2.4-11 % and 2.5-11 %, respectively; bias ranged from - 2.6 % to 2.1 %. Blood serum levels of safrole, myristicin, and elemicin were measured at admission (approximately 8 h post-ingestion) and approximately 94 h after a post-admission fluid therapy to evaluate their biological half-lives. We developed this method to obtain information on the psychoactive constituents of nutmeg and, thereby, determine the toxicokinetic parameters of nutmeg in a case of nutmeg poisoning.
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Affiliation(s)
- Kiyotaka Usui
- Division of Forensic Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan; Emergency Medical Center and Poison Center, Saitama Medical University Hospital, 38 Morohongo, Moroyama-cho, Iruma-gun, Saitama 350-0495, Japan.
| | - Eito Kubota
- Division of Forensic Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Haruka Kobayashi
- Division of Forensic Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Yuji Fujita
- Division of Emergency Medicine, Department of Emergency, Disaster and General Medicine, Iwate Medical University School of Medicine, 1-1-1 Idaidori, Yahaba-cho, Shiwa-gun Morioka, Iwate 028-3694, Japan
| | - Kengo Hatanaka
- Department of Traumatology and Critical Care Medicine Faculty of Medicine, University of Miyazaki, 5200 Kiyotakecho Kihara, Miyazaki-city, Miyazaki 889-1692, Japan
| | - Yoshito Kamijo
- Emergency Medical Center and Poison Center, Saitama Medical University Hospital, 38 Morohongo, Moroyama-cho, Iruma-gun, Saitama 350-0495, Japan
| | - Masato Funayama
- Division of Forensic Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Sohtaro Mimasaka
- Division of Forensic Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
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28
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Li Z, Li Z, Xie W, Liu J, Li B, Liu W, Shi Y. Hair-based rapid UPLC-MS/MS analysis of 36 phencyclidine-type substances in forensic cases. J Pharm Biomed Anal 2023; 234:115577. [PMID: 37480824 DOI: 10.1016/j.jpba.2023.115577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 07/24/2023]
Abstract
Phencyclidine (PCP) is a frequently abused dissociative agent. It causes confusion, increased tendencies toward violence, and concentration-dependent cytotoxicity after entry into the body. The parent nucleus of phencyclidine-type substances is arylcyclohexylamine, which is easy to modify; therefore, abusers and dealers can readily synthesize substitutes beyond the drug control catalog. An urgent need exists to establish screening methods for phencyclidine-type substances to provide technical support for abuse monitoring. In this study, 20Â mg of hair was pulverized in 500Â mL of methanol containing 0.5Â ng/mL PCP-d5. After ultrasonication, centrifugation, and filtration, the supernatant was analyzed by ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) operating in the multiple reaction monitoring mode. Phencyclidine-type substances were separated in 13Â min on a biphenyl column using a mobile phase gradient composed of A (water, formic acid 0.1%, acetonitrile 5%, 20Â mmol/L ammonium acetate) and B (acetonitrile). The developed and validated method showed good selectivity, sensitivity (limit of detection: 0.25-2Â pg/mg and lower limit of quantitation: 0.5-4Â pg/mg), linearity (R2 > 0.994), accuracy, and precision (< 20%), and a dilution effect. The method also showed good recovery and acceptable matrix effects for most of the targeted compounds. This analytical approach was successfully applied for the identification and quantification of phencyclidine-type substances in hair from 87 authentic forensic cases. Nine analytes were detected: ketamine (10.3-26211.3Â pg/mg), 2-F-2-oxo-PCE (11.5-4034.9Â pg/mg), 2-FDCK (14.0-43290.2Â pg/mg), 2-BrDCK (10.6-21170.0Â pg/mg), nor2-FDCK (10.1-16767.4Â pg/mg), tiletamine (10.1-3250.8Â pg/mg), O-PCE (43.3-166.1Â pg/mg), DCK (10.2-90.4Â pg/mg), and norDCK (24.9-103.0Â pg/mg).
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Affiliation(s)
- Ziyi Li
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Zehong Li
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Wanting Xie
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Jinting Liu
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China
| | - Bo Li
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Wei Liu
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China.
| | - Yan Shi
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China.
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29
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Jones AW. Bibliometric evaluation of Forensic Science International as a scholarly journal within the subject category legal medicine. Forensic Sci Int Synerg 2023; 7:100438. [PMID: 37753217 PMCID: PMC10518441 DOI: 10.1016/j.fsisyn.2023.100438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/14/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023]
Abstract
This article presents a bibliometric evaluation of Forensic Science International (FSI) as a scholarly journal within the "legal medicine" subject category. Citation data were retrieved from Science Citation Index (SCI) and Journal Citation Reports (JCR), both of which are part of the Web-of-Science (WOS) database. The most cited articles in FSI were identified along with the most prolific authors. The current journal impact factor (JIF) of FSI is 2.2, which was in good agreement with the 5-year JIF of 2.3. FSI was ranked fourth among 17 journals within the legal medicine subject category. Since 1979, a total of 209 FSI articles were cited over 100 times and the H-index for times cited was 125. Although widely used in academia, bibliometric methods might also prove useful in jurisprudence, such as when evaluating the research and publications of people proposed as expert witnesses.
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Affiliation(s)
- Alan Wayne Jones
- Division of Clinical Chemistry and Pharmacology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, University of Linköping, Linköping, SE-58183, Sweden
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30
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Calvetti C, Salomone A, Verzeletti A, Di Nardo F, Begni PMG, Vezzoli S. Are the NPS commonly used? An extensive investigation in Northern Italy based on hair analysis. J Anal Toxicol 2023; 47:574-579. [PMID: 37506041 DOI: 10.1093/jat/bkad040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/07/2023] [Accepted: 07/26/2023] [Indexed: 07/30/2023] Open
Abstract
New psychoactive substances (NPS) are present on the Italian illicit markets, but data from the analysis of biological samples to evaluate their real consumption are rare. For this reason, an epidemiological study was carried out by means of a ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS-MS) method for the determination of 115 NPS on the keratin matrix. A total of 847 hair samples were collected in 2020 and 2021 and analyzed. The sample donors were in the age range of 18-40 years, from both genders, and were tested either for driving relicensing or for drug withdrawal monitoring. The UPLC-MS-MS system consisted of a Waters ACQUITY UPLC® I-Class, coupled with a Waters XEVO TQ-XS triple quadrupole mass spectrometer. The method was developed and fully validated according to international guidelines. Limits of detection were set as the minimum criterion to identify positive samples. Overall, 56 samples resulted positive for ketamine, 35 for norketamine, 6 for fentanyl, 3 for norfentanyl, 3 for 4-ANPP, 3 for MDMB-4en-PINACA, 2 for N,N-DMT, 2 for 5-chloro AB-PINACA, 1 for α-PHP and 1 for methcathinone. NPS were detected in a small part of samples (8.4%), which seems in contrast with their apparent wide diffusion in Italy, yet it is congruent with similar investigations based on hair analysis. Future studies will be performed to expand the investigated population, especially in terms of age and origin.
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Affiliation(s)
- Cristina Calvetti
- Institute of Legal Medicine, University of Brescia, Piazzale Spedali Civili, 1, Brescia 25123, Italy
| | - Alberto Salomone
- Department of Chemistry, University of Turin, via P. Giuria 5, Torino 10125, Italy
| | - Andrea Verzeletti
- Institute of Legal Medicine, University of Brescia, Piazzale Spedali Civili, 1, Brescia 25123, Italy
| | - Fabio Di Nardo
- Department of Chemistry, University of Turin, via P. Giuria 5, Torino 10125, Italy
| | - Paola Maria Giulia Begni
- Institute of Legal Medicine, University of Brescia, Piazzale Spedali Civili, 1, Brescia 25123, Italy
| | - Sara Vezzoli
- Institute of Legal Medicine, University of Brescia, Piazzale Spedali Civili, 1, Brescia 25123, Italy
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Proença P, Teixeira HM, Martinho B, Monteiro C, Franco J, Corte-Real F. LC-MS-MS-MS3 for the determination and quantification of ∆9-tetrahydrocannabinol and metabolites in blood samples. J Anal Toxicol 2023; 47:606-614. [PMID: 37494426 DOI: 10.1093/jat/bkad046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023] Open
Abstract
Due to the high prevalence of cannabinoids in forensic toxicology analysis, it is crucial to have an efficient method that allows the use of a small sample amount and that requires a minimal sample preparation for the determination and quantification of low concentrations. A simple, highly selective and high throughput liquid chromatography-tandem mass spectrometry methodology (LC-MS-MS-MS3) was developed for the determination and quantification of ∆9-tetrahydrocannabinol (THC), 11-hydroxy-∆9- tetrahydrocannabinol (THC-OH) and 11-nor-9-carboxy-∆9-tetrahydrocannabinol (THC-COOH) in blood samples. Chromatographic analysis of THC, THC-OH and THC-COOH and their deuterated internal standards was preceded by protein precipitation (PPT) of 0.1 mL of blood samples with acetonitrile. Chromatographic separation was achieved by use of an Acquity UPLC® HHS T3 (100 mm × 2.1 mm i.d., 1.8 μm) reversed-phase column, using a gradient elution of 2 mM aqueous ammonium formate, 0.1% formic acid and methanol at a flow rate of 0.4 mL/min, with a run time of 10 min. For the MS-MS-MS3 analysis, a SCIEX QTRAP® 6500+ triple quadrupole linear ion trap mass spectrometer was used via electrospray ionization (ESI), operated in multiple reaction monitoring (MRM) and linear ion trap mode (MS3). The method was validated in accordance with internationally accepted criteria and guidelines, and proved to be selective and linear between 0.5 and 100 ng/mL (r2 > 0.995). The lower limits of quantification (LLOQ) corresponded to the lowest concentrations used for the calibration curves. The coefficients of variation obtained for accuracy and precision were <15%. The mean recoveries were between 88.0% and 117.2% for the studied concentration levels (1 ng/mL, 5 ng/mL and 50 ng/mL). No significant interfering compounds, matrix effects or carryover were observed. The validated method provides a sensitive, efficient and robust procedure for the quantification of cannabinoids in blood, using LC-MS-MS-MS3 and a sample volume of 0.1 mL. This work is also a proof of concept for using LC-MS3 technique to determine drugs in biological samples.
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Affiliation(s)
- Paula Proença
- Forensic Chemistry and Toxicology Laboratory, National Institute of Legal Medicine and Forensic Sciences, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - Helena M Teixeira
- Forensic Chemistry and Toxicology Laboratory, National Institute of Legal Medicine and Forensic Sciences, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
- Faculty of Medicine, University of Coimbra, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - Beatriz Martinho
- Forensic Chemistry and Toxicology Laboratory, National Institute of Legal Medicine and Forensic Sciences, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - Carla Monteiro
- Forensic Chemistry and Toxicology Laboratory, National Institute of Legal Medicine and Forensic Sciences, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - João Franco
- Forensic Chemistry and Toxicology Laboratory, National Institute of Legal Medicine and Forensic Sciences, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - Francisco Corte-Real
- Forensic Chemistry and Toxicology Laboratory, National Institute of Legal Medicine and Forensic Sciences, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
- Faculty of Medicine, University of Coimbra, Polo das Ciências da Saúde (Polo III), Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
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Skaalvik TG, Zhou C, Øiestad EL, Hegstad S, Trones R, Pedersen-Bjergaard S. Conductive vial electromembrane extraction of opioids from oral fluid. Anal Bioanal Chem 2023; 415:5323-5335. [PMID: 37386201 PMCID: PMC10444644 DOI: 10.1007/s00216-023-04807-3] [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: 04/28/2023] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 07/01/2023]
Abstract
The use of oral fluid as sample matrix has gained significance in the analysis of drugs of abuse due to its non-invasive nature. In this study, the 13 opioids morphine, oxycodone, codeine, O-desmethyl tramadol, ethylmorphine, tramadol, pethidine, ketobemidone, buprenorphine, fentanyl, cyclopropylfentanyl, etonitazepyne, and methadone were extracted from oral fluid using electromembrane extraction based on conductive vials prior to analysis with ultra-high performance liquid chromatography-tandem mass spectrometry. Oral fluid was collected using Quantisal collection kits. By applying voltage, target analytes were extracted from oral fluid samples diluted with 0.1% formic acid, across a liquid membrane and into a 300 μL 0.1% (v/v) formic acid solution. The liquid membrane comprised 8 μL membrane solvent immobilized in the pores of a flat porous polypropylene membrane. The membrane solvent was a mixture of 6-methylcoumarin, thymol, and 2-nitrophenyloctyl ether. The composition of the membrane solvent was found to be the most important parameter to achieve simultaneous extraction of all target opioids, which had predicted log P values in the range from 0.7 to 5.0. The method was validated in accordance to the guidelines by the European Medical Agency with satisfactory results. Intra- and inter-day precision and bias were within guideline limits of ± 15% for 12 of 13 compounds. Extraction recoveries ranged from 39 to 104% (CV ≤ 23%). Internal standard normalized matrix effects were in the range from 88 to 103% (CV ≤ 5%). Quantitative results of authentic oral fluid samples were in accordance with a routine screening method, and external quality control samples for both hydrophilic and lipophilic compounds were within acceptable limits.
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Affiliation(s)
- Tonje Gottenberg Skaalvik
- Department of Clinical Pharmacology, St. Olav University Hospital, Professor Brochs Gate 6, 7030, Trondheim, Norway
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway
| | - Chen Zhou
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, 610041, China
| | - Elisabeth Leere Øiestad
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway
- Division of Laboratory Medicine, Department of Forensic Sciences, Oslo University Hospital, P.O. Box 4459 Nydalen, 0424, Oslo, Norway
| | - Solfrid Hegstad
- Department of Clinical Pharmacology, St. Olav University Hospital, Professor Brochs Gate 6, 7030, Trondheim, Norway
| | - Roger Trones
- Extraction Technologies Norway, Verkstedveien 29, 1424, Ski, Norway
| | - Stig Pedersen-Bjergaard
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway.
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark.
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Nozawa H, Minakata K, Hasegawa K, Yamagishi I, Miyoshi N, Suzuki M, Kitamoto T, Kondo M, Watanabe K, Suzuki O. Quantification of olanzapine and its three metabolites by liquid chromatography-tandem mass spectrometry in human body fluids obtained from four deceased, and confirmation of the reduction from olanzapine N-oxide to olanzapine in whole blood in vitro. Forensic Toxicol 2023; 41:318-328. [PMID: 36997675 PMCID: PMC10310574 DOI: 10.1007/s11419-023-00662-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 02/28/2023] [Indexed: 06/19/2023]
Abstract
PURPOSE Quantification of olanzapine (OLZ) and its metabolites such as N-desmethylolanzapine (DM-O), 2-hydroxymethylolanzapine (2H-O) and olanzapine N-oxide (NO-O) in five kinds of human body fluids including whole blood by liquid chromatography (LC)-tandem mass spectrometry (MS/MS) has been presented; the quantification methods were carefully devised and validated using the matrix-matched calibration and standard addition methods. METHODS OLZ and its three metabolites were extracted from 40 μL each of body fluids by two-step liquid-liquid separations. The samples and reagents were pre-cooled in a container filled with ice for the extraction because of the thermal instability of OLZ and its three metabolites especially in whole blood. RESULTS The limits of quantification (LOQs) of OLZ and 2H-O were 0.05 ng/mL and those of DM-O and NO-O were 0.15 ng/mL in whole blood and urine, respectively. The concentrations of OLZ and its metabolites in heart whole blood, pericardial fluid, stomach contents, bile and urine were determined for two cadavers and those in whole blood and urine for the other two cadavers. The reduction from NO-O to OLZ was observed at 25 ℃ in whole blood in vitro. CONCLUSIONS To our knowledge, this is the first report on the quantification of metabolites of olanzapine in the authentic human body fluids by LC-MS/MS as well as on the confirmation of in vitro reduction from NO-O to OLZ in whole blood that seems to have induced the quick decrease of NO-O.
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Affiliation(s)
- Hideki Nozawa
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan.
| | - Kayoko Minakata
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Koutaro Hasegawa
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Itaru Yamagishi
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Naotomo Miyoshi
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Masako Suzuki
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Takuya Kitamoto
- Advanced Research Facilities and Services, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Minako Kondo
- Advanced Research Facilities and Services, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Kanako Watanabe
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
| | - Osamu Suzuki
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-Ku, Hamamatsu, 431-3192, Japan
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Guo C, Yan H, Liu W, Xiang P, Di B, Shen M. Liquid chromatography with tandem mass spectrometric method for determination of 425 drugs and poisons in dried blood spots and application to forensic cases. Forensic Toxicol 2023; 41:241-248. [PMID: 36719526 DOI: 10.1007/s11419-023-00659-9] [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: 09/25/2022] [Accepted: 01/05/2023] [Indexed: 02/01/2023]
Abstract
PURPOSE An analytical method using liquid chromatography with tandem mass spectrometry (LC-MS/MS) was established and validated for screening 425 drugs and poisons in dried blood spots (DBSs). METHODS Blood (20 μL) was spotted on Whatman FTA™ classic card to prepare DBS sample, then extracted with 150 μL methanol and analyzed by LC-MS/MS using a multiple reaction monitoring method. RESULTS The limit of detection of the compounds were 0.1-10 ng/mL. The values for recovery and matrix effect were 40.3-114.9% and 40.2-118.4%, respectively. This method was successfully applied to DBS samples from 105 humans suspected of drug poisoning, which was stored for 3-5 years at room temperature. Thirty-three kinds of drugs, including benzodiazepines, antipsychotics, antidepressants, antipyretic analgesics, non-steroidal anti-inflammatory drugs, antibiotics, antiepileptic drugs, new psychoactive drugs were confirmed in 102 cases, while no compound was detected in the other 3 cases. Estazolam, a benzodiazepine widely used in clinical practice as a sedative, hypnotic, and anti-anxiety drug, was the most frequently detected substance, occurring in 34.2% of the cases. CONCLUSIONS Most drugs in DBS could still be detected after storage for 3-5 years, but ambroxol, zopiclone, carbofuran, chlorpyrifos, and valproic acid were not detectable after 3-5 years of storage at room temperature. The components measured in DBS were consistent with those measured in whole blood at the collection time, thereby confirming that DBS samples have the advantage of stable storage at room temperature.
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Affiliation(s)
- Caixia Guo
- Department of Forensic Toxicology, Academy of Forensic Science, Ministry of Justice, Shanghai Key Laboratory of Forensic Medicine, 1347 Guangfu Xi Road, Shanghai, 200063, China
- Department of Pharmaceutical Analysis, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Hui Yan
- Department of Forensic Toxicology, Academy of Forensic Science, Ministry of Justice, Shanghai Key Laboratory of Forensic Medicine, 1347 Guangfu Xi Road, Shanghai, 200063, China
| | - Wei Liu
- Department of Forensic Toxicology, Academy of Forensic Science, Ministry of Justice, Shanghai Key Laboratory of Forensic Medicine, 1347 Guangfu Xi Road, Shanghai, 200063, China
| | - Ping Xiang
- Department of Forensic Toxicology, Academy of Forensic Science, Ministry of Justice, Shanghai Key Laboratory of Forensic Medicine, 1347 Guangfu Xi Road, Shanghai, 200063, China
| | - Bin Di
- Department of Pharmaceutical Analysis, School of Pharmacy, China Pharmaceutical University, 639 Longmian Avenue, Nanjing, 211198, China
| | - Min Shen
- Department of Forensic Toxicology, Academy of Forensic Science, Ministry of Justice, Shanghai Key Laboratory of Forensic Medicine, 1347 Guangfu Xi Road, Shanghai, 200063, China.
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Peters FT, Wissenbach D. Current state-of-the-art approaches for mass spectrometry in clinical toxicology: an overview. Expert Opin Drug Metab Toxicol 2023; 19:487-500. [PMID: 37615282 DOI: 10.1080/17425255.2023.2252324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/04/2023] [Accepted: 08/23/2023] [Indexed: 08/25/2023]
Abstract
INTRODUCTION Hyphenated mass spectrometry (MS) has evolved into a very powerful analytical technique of high sensitivity and specificity. It is used to analyze a very wide spectrum of analytes in classical and alternative matrices. The presented paper will provide an overview of the current state-of-the-art of hyphenated MS applications in clinical toxicology primarily based on review articles indexed in PubMed (1990 to April 2023). AREAS COVERED A general overview of matrices, sample preparation, analytical systems, detection modes, and validation and quality control is given. Moreover, selected applications are discussed. EXPERT OPINION A more widespread use of hyphenated MS techniques, especially in systematic toxicological analysis and drugs of abuse testing, would help overcome limitations of immunoassay-based screening strategies. This is currently hampered by high instrument cost, qualification requirements for personnel, and less favorable turnaround times, which could be overcome by more user-friendly, ideally fully automated MS instruments. This would help making hyphenated MS-based analysis available in more laboratories and expanding analysis to a large number of organic drugs, poisons, and/or metabolites. Even the most recent novel psychoactive substances (NPS) could be presumptively identified by high-resolution MS methods, their likely presence be communicated to treating physicians, and be confirmed later on.
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Affiliation(s)
- Frank T Peters
- Institute of Forensic Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Daniela Wissenbach
- Institute of Forensic Medicine, Jena University Hospital, Friedrich Schiller University, Jena, Germany
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Huang Y, Jia W, Chen Y, Liu C, Liu S, Su M, Hua Z. A comprehensive analytical strategy based on characteristic fragments to detect synthetic cannabinoid analogs in seized products and hair samples. Talanta 2023; 265:124830. [PMID: 37339539 DOI: 10.1016/j.talanta.2023.124830] [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: 02/15/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 06/22/2023]
Abstract
Synthetic cannabinoids, one of the most widely abused new psychoactive substances (NPS), are now placed under national control generally in China. Due to continuous modification of synthetic cannabinoid structure, an ongoing dilemma in the forensic laboratory is that newly emerging substances cannot be detected by established methods. Thus, the screening methods for simultaneous detection of known or unknown substances have become research hotspots. In this study, the ultra high performance liquid chromatography tandem triple quadrupole mass spectrometry (UPLC-QqQ-MS) with precursor ion scan (PIS) as acquisition mode was used for prescreening purposes of all possible synthetic cannabinoids-related substances. In detail, four common characteristic fragments, m/z of 144.0, 145.0, 135.1, and 109.0 corresponding to acylium-indole, acylium-indazole, adamantyl, and fluorobenzyl cation respectively, were selected for PIS mode, and their collision energies were optimized by 97 available synthetic cannabinoids standards with relevant structures. Those suspicious signals observed in the screening experiment were confirmed by ultra high performance liquid chromatography tandem quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) via high-resolution MS and MS2 data obtained by full scan (TOF MS) and product ion scan mode. After methodological validation, the integrated strategy established above was applied to the screening and identification of the seized e-liquids, herbal blends and hair samples, confirming the presence of multiple synthetic cannabinoids in these samples. In particular, a novel synthetic cannabinoid was identified as 4Â F-ABUTINACA, for which no relevant high-resolution mass spectrometry (HRMS) data has been retrieved until now, making this study the first to report the cleavage pattern of this compound in electrospray ionization (ESI) mass spectrometry. In addition, four other suspected by-products of the synthetic cannabinoids were found in the herbal blends and e-liquids, and their possible structures were also deduced via the information from high-resolution mass spectra.
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Affiliation(s)
- Yu Huang
- School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China; China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Nanjing, 210009, China
| | - Wei Jia
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Nanjing, 210009, China; Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing, 100193, China
| | - Yuemeng Chen
- Drug Control Unit of Guiyang Public Security Bureau of Guizhou Province, Guiyang, 550001, China
| | - Cuimei Liu
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Nanjing, 210009, China; Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing, 100193, China
| | - Shan Liu
- Drug Control Unit of Guiyang Public Security Bureau of Guizhou Province, Guiyang, 550001, China
| | - Mengxiang Su
- School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, China; China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Nanjing, 210009, China.
| | - Zhendong Hua
- China National Narcotics Control Commission - China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Nanjing, 210009, China; Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing, 100193, China.
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Chen M, Liu W, Xiang P, Xu L, Tang Y, Kong R, Yang S, Yan H, Di B. Development of an LC-MS/MS method for the determination of multiple mycotoxins in human urine. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023:1-11. [PMID: 37315076 DOI: 10.1080/19440049.2023.2222842] [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: 03/03/2023] [Revised: 05/27/2023] [Accepted: 05/30/2023] [Indexed: 06/16/2023]
Abstract
A sensitive liquid chromatography-tandem mass spectrometry method was developed for the determination of 17 mycotoxins in human urine. The method incorporates a two-step liquid-liquid extraction with ethyl acetate:acetonitrile (7:1), which had good extraction recovery. The LOQs of all mycotoxins ranged from 0.1 to 1 ng/mL. Intra-day accuracy ranged from 94 to 106%, and intra-day precision ranged from 1 to 12% for all mycotoxins. Inter-day accuracy and precision were 95-105% and 2-8%, respectively. The method was successfully applied to investigate the urine levels of 17 mycotoxins from 42 volunteers. Deoxynivalenol (DON, 0.97-9.88 ng/mL) was detected in 10 (24%) urine samples and zearalenone (ZEN, 0.13-1.11 ng/mL) in 2 (5%) urine samples.
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Affiliation(s)
- Mobing Chen
- School of Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Wei Liu
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Ping Xiang
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Linhao Xu
- School of Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Yiling Tang
- School of Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Ran Kong
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Shuo Yang
- School of Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Hui Yan
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai, P. R. China
| | - Bin Di
- School of Pharmacy, China Pharmaceutical University, Nanjing, P. R. China
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Hwang IM, Jung S, Jeong JY, Kim MJ, Jang HY, Lee JH. Elemental Analysis of Kimchi Cabbage Leaves, Roots, and Soil and Its Potential Impact on Human Health. ACS OMEGA 2023; 8:20892-20899. [PMID: 37323378 PMCID: PMC10268290 DOI: 10.1021/acsomega.3c01672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 05/22/2023] [Indexed: 06/17/2023]
Abstract
In view of their rich mineral content and flavor, kimchi cabbage leaves and roots have high nutritional and medicinal values. In this study, we quantified major nutrient (Ca, Cu, Fe, K, Mg, Na, and Zn), trace (B, Be, Bi, Co, Ga, Li, Ni, Se, Sr, V, and Cr), and toxic (Pb, Cd, Tl, and In) elements in kimchi cabbage cultivation soil, leaves, and roots. The analysis method relied on inductively coupled plasma-optical emission spectrometry for major nutrient elements and inductively coupled plasma-mass spectrometry for trace and toxic elements and complied with the Association of Official Analytical Chemists (AOAC) guidelines. Kimchi cabbage leaves and roots featured high contents of K, B, and Be, while the contents of all toxic elements in all samples were below the WHO-stipulated threshold values and therefore did not pose any health risks. The distribution of elements was characterized by heat map analysis and linear discriminant analysis to reveal independent separation according to the content of each element. The analysis confirmed that there was a difference in content between the groups and that each group was independently distributed. This study may contribute to a better understanding of the complex relationships between plant physiology, cultivation condition, and human health.
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Sabzkoohi HA, Dodier V, Kolliopoulos G. A validated analytical method to measure metals dissolved in deep eutectic solvents. RSC Adv 2023; 13:14887-14898. [PMID: 37200707 PMCID: PMC10186337 DOI: 10.1039/d3ra02372a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023] Open
Abstract
This work presents the first validated method to analyze metals dissolved in deep eutectic solvents (DES) on a microwave plasma atomic emission spectrometer (MP-AES), which is key to the success of the upcoming field of solvometallurgical processing. The method was developed and validated for eleven metals: alkali metals: lithium (Li); alkaline earth metals: magnesium (Mg); transition metals: iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), palladium (Pd); and post-transition metals: aluminum (Al), tin (Sn), and lead (Pb) in choline chloride based DES. The proposed method was validated with respect to linearity, limit of detection (LOD), limit of quantification (LOQ), accuracy, precision, and selectivity. Our method's selectivity was evaluated for three DES matrices: (1) choline chloride: ethylene glycol, (2) choline chloride: levulinic acid, and (3) choline chloride: ethylene glycol in the presence of iodine, which is an oxidant often used in solvometallurgy. In all three matrices, the linearity range was plotted with at least 5 levels of standard solutions. All the parameters satisfied the acceptability criteria suggested by international organizations, such as the International Council for Harmonization, AOAC International, and the International Union of Pure and Applied Chemistry. Specifically, the calculated LOD and LOQ are comparable with aqueous matrices on MP-AES and with other analytical methods. The metal with the lowest reported LOD (0.003 ppm) and LOQ (0.008 ppm) was Cu, while the highest LOD and LOQ were obtained for Mg at 0.07 and 0.22 ppm, respectively. The recovery and precision for the three DES matrices were acceptable, i.e., between 95.67-108.40% and less than 10%, respectively. Finally, to compare the proposed method with the standard analytical method used to measure metals dissolved in aqueous solutions, we used 2 ppm standard solutions in DES and found that the accuracy was unacceptable without using the proposed method. Therefore, it is evident that our method will be pivotal in the field of solvometallurgy, as it will allow accurate and precise detection and quantification of metals dissolved in DES and eliminate quantification errors, which were estimated in excess of 140% without using the method developed and proper DES matrix-matched calibrations.
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Affiliation(s)
- Halimeh Askari Sabzkoohi
- Department of Mining, Metallurgical, and Materials Engineering, Université Laval 1065 Av. de la Médecine Québec G1V 0A6 Canada
| | - Vicky Dodier
- Department of Mining, Metallurgical, and Materials Engineering, Université Laval 1065 Av. de la Médecine Québec G1V 0A6 Canada
| | - Georgios Kolliopoulos
- Department of Mining, Metallurgical, and Materials Engineering, Université Laval 1065 Av. de la Médecine Québec G1V 0A6 Canada
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Sharafeldin M, Yan S, Jiang C, Tofaris GK, Davis JJ. Alternating Magnetic Field-Promoted Nanoparticle Mixing: The On-Chip Immunocapture of Serum Neuronal Exosomes for Parkinson's Disease Diagnostics. Anal Chem 2023; 95:7906-7913. [PMID: 37167073 DOI: 10.1021/acs.analchem.3c00357] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The analysis of cargo proteins in exosome subpopulations has considerable value in diagnostics but a translatable impact has been limited by lengthy or complex exosome extraction protocols. We describe herein a scalable, fast, and low-cost exosome extraction using an alternating (AC) magnetic field to support the dynamic mixing of antibody-coated magnetic beads (MBs) with serum samples within 3D-printed microfluidic chips. Zwitterionic polymer-coated MBs are, specifically, magnetically agitated and support ultraclean exosome capture efficiencies >70% from <50 μL of neat serum in 30 min. Applied herein to the immunocapture of neuronal exosomes using anti-L1CAM antibodies, prior to the array-based assaying of α-synuclein (α-syn) content by a standard duplex electrochemical sandwich ELISA, sub pg/mL detection was possible with an excellent coefficient of variation and a sample-to-answer time of ∼75 min. The high performance and semiautomation of this approach hold promise in underpinning low-cost Parkinson's disease diagnostics and is of value in exosomal biomarker analyses more generally.
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Affiliation(s)
- Mohamed Sharafeldin
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
- Department of Chemistry, University of Otago, Dunedin 9054, New Zealand
| | - Shijun Yan
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, U.K
- Kavli Institute for Nanoscience Discovery, Dorothy Crowfoot Hodgkin Building, University of Oxford, Oxford OX1 3QU, U.K
| | - Cheng Jiang
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, U.K
- Kavli Institute for Nanoscience Discovery, Dorothy Crowfoot Hodgkin Building, University of Oxford, Oxford OX1 3QU, U.K
| | - George K Tofaris
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, U.K
- Kavli Institute for Nanoscience Discovery, Dorothy Crowfoot Hodgkin Building, University of Oxford, Oxford OX1 3QU, U.K
| | - Jason J Davis
- Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, U.K
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van Spijk JN, Beckmann K, Wehrli Eser M, Stirn M, Steuer AE, Saleh L, Schoster A. Preliminary Investigation of Side Effects of Polymyxin B Administration in Hospitalized Horses. Antibiotics (Basel) 2023; 12:antibiotics12050854. [PMID: 37237756 DOI: 10.3390/antibiotics12050854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023] Open
Abstract
Neuro- and nephrotoxicity of polymyxins are known but clinical studies in horses are lacking. The aim of this study was to describe neurogenic and nephrogenic side effects of hospitalized horses receiving Polymyxin B (PolyB) as part of their treatment plan. Twenty horses diagnosed with surgical colic (n = 11), peritonitis (n = 5), typhlocolitis (n = 2), pneumonia, and pyometra (each n = 1) were included. Antimicrobial treatment was randomized to GENTA (gentamicin 10 mg/kg bwt q24 h IV, penicillin 30.000 IU/kg q6 h IV) or NO GENTA (marbofloxacin 2 mg/kg bwt q24 h IV, penicillin 30.000 IU/kg q6 h IV). The duration of PolyB treatment ranged from 1 to 4 days. Clinical and neurological examinations were performed, and serum PolyB concentrations were measured daily during and three days following PolyB treatment. Urinary analysis, plasma creatinine, urea and SDMA were assessed every other day. Video recordings of neurological examinations were graded by three blinded observers. All horses showed ataxia during PolyB treatment in both groups (median maximum ataxia score of 3/5, range 1-3/5). Weakness was detected in 15/20 (75%) horses. In 8/14 horses, the urinary γ-glutamyltransferase (GGT)/creatinine ratio was elevated. Plasma creatinine was mildly elevated in 1/16 horses, and SDMA in 2/10 horses. Mixed-model analysis showed a significant effect of time since last PolyB dose (p = 0.0001, proportional odds: 0.94) on the ataxia score. Ataxia and weakness should be considered as reversible adverse effects in hospitalized horses receiving PolyB. Signs of tubular damage occurred in a considerable number of horses; therefore, the nephrotoxic effect of polymyxins should be considered and urinary function monitored.
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Affiliation(s)
- Julia N van Spijk
- Equine Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland
| | - Katrin Beckmann
- Department of Small Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland
| | - Meret Wehrli Eser
- Equine Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland
| | - Martina Stirn
- Departement for Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland
| | - Andrea E Steuer
- Institute of Forensic Medicine, University of Zurich, Winterthurerstrasse 190/52, CH-8057 Zurich, Switzerland
| | - Lanja Saleh
- Institute of Clinical Chemistry, University Hospital Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland
| | - Angelika Schoster
- Equine Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, CH-8057 Zurich, Switzerland
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42
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Abusoglu S, Eryavuz Onmaz D, Abusoglu G, Humeyra Yerlikaya F, Unlu A. Measurement of kynurenine pathway metabolites by tandem mass spectrometry. J Mass Spectrom Adv Clin Lab 2023; 28:114-121. [PMID: 37113385 PMCID: PMC10127116 DOI: 10.1016/j.jmsacl.2023.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/07/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Objectives Recent studies have shown that derangements in kynurenine pathway metabolite levels are associated with various pathologies such as neurodegenerative diseases, schizophrenia, depression, bipolar disorder, rheumatoid arthritis, and cancer. Therefore, reliable, accurate, fast, and multiplex measurement methods for kynurenines have become increasingly important. This study aimed to validate a new mass spectrometric method for analyzing tryptophan metabolites. Methods A tandem mass spectrometric method, including protein precipitation and evaporation steps, was developed to measure serum levels of tryptophan, kynurenine, kynurenic acid, 3-hydroxykynurenine, and 3-hydroxyanthranilic acid. Samples were separated using a Phenomenex Luna C18 reversed-phase column. The kynurenine pathway metabolites were detected by tandem mass spectrometry. The developed method was validated according to Clinical & Laboratory Standards Institute (CLSI) guidelines and applied to hemodialysis samples. Results The developed method was linear at the concentrations of 48.8 - 25,000, 0.98 - 500, 1.2-5000, 1.2-5000, and 0.98-250Â ng/mL for tryptophan, kynurenic acid, kynurenine, 3-hydroxyanthranilic acid, and 3-hydroxykynurenine, respectively. The imprecisions were less than 12Â %. The median serum concentrations of tryptophan, kynurenine, kynurenic acid, 3-hydroxykynurenine, and 3-hydroxyanthranilic acid were 10530, 1100, 218, 17.6, and 25.4Â ng/mL in pre-dialysis blood samples, respectively. They were 4560, 664, 135, 7.4, and 12.8Â ng/mL in post-dialysis blood samples, respectively. Conclusions A fast, simple, cost-effective, accurate, robust, and validated tandem mass spectrometric method was developed, and the method was successfully used for the quantitation of kynurenine pathway metabolite concentrations in hemodialysis patients.
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Affiliation(s)
- Sedat Abusoglu
- Department of Biochemistry, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Duygu Eryavuz Onmaz
- Department of Biochemistry, Selcuk University Faculty of Medicine, Konya, Turkey
- Corresponding author.
| | - Gulsum Abusoglu
- Department of Medical Laboratory Techniques, Selcuk University Vocational School of Health, Konya, Turkey
| | | | - Ali Unlu
- Department of Biochemistry, Selcuk University Faculty of Medicine, Konya, Turkey
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Kristoffersen L, Vevelstad M, Hansen IA, Strømsvåg B, Strand DH. Comparative Evaluation of Carboxyhemoglobin Quantification in Postmortem Whole Blood by CO-Oximetry and Headspace Gas Chromatography with Flame Ionization Detection and Atom Absorption Spectrophotometry. J Anal Toxicol 2023; 47:311-316. [PMID: 36495201 DOI: 10.1093/jat/bkac099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 12/01/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
A comparative evaluation of two methods used for carboxyhemoglobin (COHb) determination in postmortem whole blood was performed: carbon monoxide (CO)-oximetry measuring at 128 wavelengths and headspace gas chromatography with flame ionization detection (HS-GC--FID) where CO was determined after catalytic reduction of CO to CH4 and Fe was determined by atom absorption spectrophotometry (AAS, 248.3 nm). An aliquot of 100 µL whole blood was loaded into the CO-oximetry module. In the HS-GC--FID analysis, to 1.0 mL of whole blood, 3.0 mL of saponin solution was added, mixed and centrifuged. To 20 mL HS vials, 400 µL of the supernatant was added and the vials were immediately sealed. One milliliter of potassium hexacyanoferrat (III) solution was added through the HS septum and mixed. The samples were incubated at 70°C for 5 min. CO was separated using He as carrier gas and a CP-Molsieve 5 Å PLOT capillary column. Fe was determined using 400 µL of the saponin supernatant diluted to 10 mL by water. During a period of ∼3 years, 124 postmortem whole blood samples were analyzed. Bland-Altman method comparison showed satisfactory agreement and no significant bias between the methods for the whole saturation range (5 to 85% COHb). Five samples, all with %COHb >40, showed deviations of more than 10% COHb in absolute terms. One sample, in the lower COHb range <10%, was false negative on the CO-oximetry method. The between-assay accuracy, reported as bias, at 60% COHb was -0.8% and -9.0%, and precision, reported as relative standard deviation, was 1.6% and 7.7%, for the CO-oximetry and HS-GC--FID-AAS methods, respectively. Both methods obtained satisfactory results in proficiency testing rounds, with z-scores <±2 (n = 11). This study showed that the CO-oximetry method based on the 128-wavelength principle and the HS-GC--FID-AAS method are comparable and satisfactory for %COHb determination in postmortem whole blood.
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Affiliation(s)
- Lena Kristoffersen
- Department of Forensic Sciences, Oslo University Hospital, Lovisenberggt. 6, Oslo 0456, Norway
| | - Merete Vevelstad
- Department of Forensic Sciences, Oslo University Hospital, Lovisenberggt. 6, Oslo 0456, Norway
| | - Inger-Ann Hansen
- Department of Forensic Sciences, Oslo University Hospital, Lovisenberggt. 6, Oslo 0456, Norway
| | - Berit Strømsvåg
- Department of Forensic Sciences, Oslo University Hospital, Lovisenberggt. 6, Oslo 0456, Norway
| | - Dag Helge Strand
- Department of Forensic Sciences, Oslo University Hospital, Lovisenberggt. 6, Oslo 0456, Norway
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Al-Asmari AI, Alharbi H, Al-Zahrani AE, Zughaibi TA. Heroin-Related Fatalities in Jeddah, Saudi Arabia, between 2008 and 2018. TOXICS 2023; 11:248. [PMID: 36977013 PMCID: PMC10099738 DOI: 10.3390/toxics11030248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/20/2023] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
To date, epidemiological studies have not evaluated heroin-related deaths in the Middle East and North African regions, especially Saudi Arabia. All heroin-related postmortem cases reported at the Jeddah Poison Control Center (JPCC) over a 10-year period (21 January 2008 to 31 July 2018) were reviewed. In addition, liquid chromatography electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) was utilized to determine the 6-monoacetylmorphine (6-MAM), 6-acetylcodeine (6-AC), morphine (MOR), and codeine contents in unhydrolyzed postmortem specimens. Ninety-seven heroin-related deaths were assessed in this study, and they represented 2% of the total postmortem cases at the JPCC (median age, 38; 98% male). In the blood, urine, vitreous humor, and bile samples, the median morphine concentrations were 280 ng/mL, 1400 ng/mL, 90 ng/mL, and 2200 ng/mL, respectively; 6-MAM was detected in 60%, 100%, 99%, and 59% of the samples, respectively; and 6-AC was detected in 24%, 68%, 50%, and 30% of the samples, respectively. The highest number of deaths (33% of total cases) was observed in the 21-30 age group. In addition, 61% of cases were classified as "rapid deaths," while 24% were classified as "delayed deaths." The majority (76%) of deaths were accidental; 7% were from suicide; 5% were from homicide; and 11% were undetermined. This is the first epidemiological study to investigate heroin-related fatalities in Saudi Arabia and the Middle East and North African region. The rate of heroin-related deaths in Jeddah remained stable but increased slightly at the end of the study period. Most patients were heroin-dependent abusers and from the middle-aged group. The availability of urine, vitreous humor, and bile specimens provided valuable information regarding the opioids that were administered and the survival time following heroin injection.
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Affiliation(s)
- Ahmed I. Al-Asmari
- Laboratory Department, Ministry of Health, King Abdul-Aziz Hospital, Jeddah 21442, Saudi Arabia
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hassan Alharbi
- Poison Control and Forensic Chemistry Center, Ministry of Health, Jeddah 21176, Saudi Arabia
| | | | - Torki A. Zughaibi
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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45
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Zhai W, Qiao Z, Xiang P, Dang Y, Shi Y. A UPLC-MS/MS methodological approach for the analysis of 75 phenethylamines and their derivatives in hair. J Pharm Biomed Anal 2023; 229:115367. [PMID: 37018959 DOI: 10.1016/j.jpba.2023.115367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/10/2023] [Accepted: 03/24/2023] [Indexed: 03/28/2023]
Abstract
A rapid ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed and validated for the targeted analysis of 75 phenethylamines and their derivatives from the hair matrix. The monitored classes of phenethylamines included the 2C series, D series, N-benzyl derivatives, mescaline-derived compounds, MDMA analogs, and benzodifurans. Approximately 20 mg of hair was weighed and pulverized with 0.1% formic acid in methanol by cryogenic grinding. After ultrasonication, centrifugation, and filtration, the supernatant was analyzed by LC-MS/MS operating in the scheduled multiple reaction monitoring mode. Phenethylamines and their derivatives were separated in 13 min on a biphenyl column (2.6 µm, 100 Å, 100 × 3.0 mm) using a gradient eluting mobile phase composed of 0.1% formic acid in water and acetonitrile. The developed and validated method showed good selectivity, sensitivity (LOD: 0.5-10 pg/mg and LOQ: 1-20 pg/mg), linearity (R2 > 0.997), accuracy and precision (< 20%), and stability. The method also showed good recovery and acceptable matrix effects for most of the targeted compounds. This analytical approach was successfully applied for the identification and quantification of phenethylamines in hair from authentic forensic cases.
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Affiliation(s)
- Wenya Zhai
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Academy of Forensic Science, Shanghai, China; College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Zheng Qiao
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Academy of Forensic Science, Shanghai, China
| | - Ping Xiang
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Academy of Forensic Science, Shanghai, China
| | - Yonghui Dang
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Yan Shi
- Department of Forensic Toxicology, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Academy of Forensic Science, Shanghai, China.
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Zheng J, Wang X, Zhang J, Ren H, Zhao Y, Xiang P. Concentrations of LSD, 2-oxo-3-hydroxy-LSD, and iso-LSD in hair segments of 18 drug abusers. Forensic Sci Int 2023; 344:111578. [PMID: 36753839 DOI: 10.1016/j.forsciint.2023.111578] [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: 10/10/2022] [Revised: 01/10/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023]
Abstract
Lysergic acid diethylamide (LSD) is one of the most widely abused hallucinogens, which can alter consciousness, produce mental disorder, and cause harmful behavior. 1-Propionyl-LSD (1 P-LSD), a novel derivative of LSD, has the similar hallucinogenic effect. It is a control substance in several countries. 1 P-LSD can act as a prodrug for LSD and is rapidly hydrolyzed to LSD in humans. Therefore, LSD use should be confirmed by the absence of 1 P-LSD and in the detection of LSD. Here, we describe a LC-MS/MS method for the simultaneous extraction of LSD, iso-LSD, 2-oxo-3-hydroxy-LSD, and 1 P-LSD from hair. Hair samples (25 mg) were pulverized by cryogenic grinding in methanol. The limits of detection were 0.2-1 pg/mg and the limits of quantification were 0.5-2 pg/mg. This method was validated and applied to hair samples from 18 suspects who may have used LSD. Segmental hair analysis revealed a decrease in the LSD concentrations from the proximal to the distill end, while 1 P-LSD was not detected in any hair segments. The interpretation of hair analysis results of LSD still remains difficult. Nevertheless, concentrations of LSD and iso-LSD in human hair from 18 LSD users were reported. LSD concentrations were from <LOQ to 4.0 pg/mg (n = 18, median 1.5 pg/mg) in the proximal 0-3 cm segment, from <LOQ to 1.8 pg/mg (n = 8) in the 3-6 cm segment, and from <LOQ to 0.6 pg/mg (n = 4) in the 6-9 cm segment. Iso-LSD ranged from <LOQ to 1.4 pg/mg (n = 4) in the 0-3 cm segment and was detectable only in one 3-6 cm segment. To our knowledge, this is the first study to monitor LSD together with 1 P-LSD in hair.
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Affiliation(s)
- Jiaming Zheng
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110000, China; Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Shanghai 200063, China
| | - Xin Wang
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Shanghai 200063, China
| | - Jiali Zhang
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Shanghai 200063, China
| | - Hang Ren
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110000, China; Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Shanghai 200063, China
| | - Yunli Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110000, China.
| | - Ping Xiang
- Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Shanghai 200063, China.
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Gruszka J, Matuszewski S. Initial laboratory validation of temperature development models for Necrodes littoralis L. (Staphylinidae: Silphinae). Int J Legal Med 2023; 137:903-911. [PMID: 36811676 PMCID: PMC10085910 DOI: 10.1007/s00414-023-02969-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/08/2023] [Indexed: 02/24/2023]
Abstract
Development models of necrophagous insects are applied in forensic entomology for post-mortem interval estimation. Such estimates may be used as scientific evidence in legal investigations. For this reason, it is important that the models are valid and that the expert witness is aware of their limitations. Necrodes littoralis L. (Staphylinidae: Silphinae) is a necrophagous beetle species that frequently colonizes human cadavers. Temperature models of development for the Central European population of these beetles were recently published. In this article, we present results of the laboratory validation study for these models. Errors of beetle age estimation differed significantly between the models. Thermal summation models yielded the most accurate estimates, and the isomegalen diagram least accurate estimates. Errors of the beetle age estimation varied across beetle developmental stages and rearing temperatures. In general, most development models of N. littoralis were satisfactorily accurate in estimating beetle age under laboratory conditions; therefore, the study provides initial evidence to support their validity in forensic cases.
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Affiliation(s)
- Joanna Gruszka
- Laboratory of Criminalistics, Adam Mickiewicz University, Św. Marcin 90, 61-809, Poznań, Poland. .,Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614, Poznań, Poland. .,Department of Animal Taxonomy and Ecology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614, Poznań, Poland.
| | - Szymon Matuszewski
- Laboratory of Criminalistics, Adam Mickiewicz University, Św. Marcin 90, 61-809, Poznań, Poland.,Center for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614, Poznań, Poland
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48
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Sørensen LK, Andreasen MF, Jornil JR, Andersen CU, Hasselstrøm JB. Stability of Lisdexamfetamine in Sampled Whole Blood-Implications of Sampling Tube Additives and Storage Temperature for Interpretation of Impairment. J Anal Toxicol 2023; 47:33-42. [PMID: 35511961 DOI: 10.1093/jat/bkac025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/26/2022] [Accepted: 05/02/2022] [Indexed: 11/13/2022] Open
Abstract
Lisdexamfetamine (LDX) is a prodrug that is enzymatically converted into dextroamphetamine (d-AMP), a central nervous system stimulant. The stability of LDX in sampled whole blood is an important issue that may be crucial in the assessment of impaired driving caused by d-AMP. This study investigated the stability of LDX in whole blood collected in two different tubes containing a fluoride oxalate (FX) mixture and a fluoride citrate (FC) mixture. Without additives, LDX was unstable. LDX was also unstable in FX blood stored at ambient temperature or 4°C. After 3 days of storage at ambient temperature, an initial LDX concentration of 47 ± 1 ng/g (mean ± SD) was no longer detectable in the samples (n = 3). Instead, 19 ± 0.6 ng/g d-AMP was formed. The stability was improved at 4°C. After 7 days of storage at 4°C, 88 ± 5% of an initial LDX concentration of 50 ± 0.4 ng/g was recovered and 3.8 ± 0.3 ng/g d-AMP was formed. The stability of LDX was greater in FC blood than in FX blood; 79 ± 10% and 93 ± 4% of initial LDX concentrations of 48 ± 2 and 51 ± 0.5 ng/g were recovered from FC blood after 7 days of storage at ambient temperature and 4°C, respectively, and the corresponding formation of d-AMP was 5.8 ± 0.6 and 0.5 ± 0.3 ng/g, respectively. When FX and FC blood were stored at -20°C or -80°C, no detectable degradation of LDX or formation of d-AMP was observed after 3 weeks of storage.
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Affiliation(s)
- Lambert K Sørensen
- Section for Forensic Chemistry, Department of Forensic Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Mette F Andreasen
- Section for Forensic Chemistry, Department of Forensic Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Jakob R Jornil
- Section for Forensic Chemistry, Department of Forensic Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Charlotte U Andersen
- Section for Forensic Chemistry, Department of Forensic Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Jørgen B Hasselstrøm
- Section for Forensic Chemistry, Department of Forensic Medicine, Aarhus University, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
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Quantitation and Distribution of Epichloë-Derived Alkaloids in Perennial Ryegrass Tissues. Metabolites 2023; 13:metabo13020205. [PMID: 36837825 PMCID: PMC9966479 DOI: 10.3390/metabo13020205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/19/2023] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Perennial ryegrass (Lolium perenne L.), an economically important pasture and turf grass, is commonly infected with asexual Epichloë species endophytes. Endophytes provide enhanced bioprotection by producing alkaloids, and research often focusses on the negative impact on grazing animals. However, alkaloid distribution throughout the plant and their role in biocontrol of insect pests and diseases are less well understood. Additionally, intermediate compounds have not been investigated for their impacts on animal welfare and biological control in pasture-based scenarios. Here, a single liquid chromatography-mass spectrometry (LC-MS) method was used to measure seven alkaloids in different perennial ryegrass tissues infected with SE or NEA12 endophytes. High alkaloid recoveries and a clear plant matrix effect emphasize the importance of using matrix-matched standards for accurate quantitation. The method is sensitive, detecting alkaloids at low concentrations (nanogram levels), which is important for endophyte strains that produce compounds detrimental to livestock. Concentrations were generally highest in seeds, but distribution differed in the shoots/roots: peramine, terpendole E, terpendole C and lolitrem B were higher in shoots, whilst ergovaline, paxilline and epoxy-janthitrem I were more evenly distributed throughout the two tissues. Knowledge of alkaloid distribution may allow for concentrations to be predicted in roots based on concentrations in the shoots, thereby assisting future determinations of resistance to insects, especially subterranean root-feeding pests.
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50
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Musile G, Pigaiani N, Pasetto E, Ballotari M, Tagliaro F, Bortolotti F. Validation of a New Salt-Assisted HS-GC-FID Method for the Determination of Ethanol in the Vitreous Humor. J Anal Toxicol 2023; 46:e274-e279. [PMID: 36346343 DOI: 10.1093/jat/bkac087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 09/20/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
Headspace gas chromatography with a flame ionization detector (HS-GC-FID) is a well-established approach for determining blood alcohol concentration, including in cadaveric specimens. Although the integrity of blood specimens can be adequately guaranteed after the sampling, the quantification of ethanol in cadaveric blood can be affected by postmortem fermentative phenomena occurring between the time since death and the sampling of biofluids. The vitreous humor is less affected by putrefactive phenomena allowing compound determination and its use as an alternative biological matrix. The present work aimed to develop and validate a method using the salting-out effect and based on HS-GC-FID for the determination of ethanol in the vitreous humor. The reported analytical method is based on a simple vitreous humor pre-treatment consisting of a dilution (1:9) with a solution of 2.5 mol/L K2CO3 and 0.0012 mol/L tert-butanol (internal standard). After 1 min of incubation, part of the specimen evaporated in the headspace (2,000 µL) is injected into the chromatographic system and analyzed in isothermal mode (40°C), with a chromatographic time of 1.6 min. The method was validated in terms of selectivity, the lowest limit of detection, intraday and total imprecision, and trueness (bias). The determination of ethanol in the vitreous humor and blood was carried out in 75 cases. The correlation between the two matrices was confirmed in 61 cases. However, 14 vitreous humor specimens showed lower ethanol concentrations, and in the related blood specimens, it was possible to identify the signal of n-propanol, a typical product of postmortem microbial fermentation, that justifies the excess of ethanol in the blood specimens.
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Affiliation(s)
- Giacomo Musile
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, P.le L.A. Scuro 10, Verona 37134, Italy
| | - Nicola Pigaiani
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, P.le L.A. Scuro 10, Verona 37134, Italy
| | - Emma Pasetto
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, P.le L.A. Scuro 10, Verona 37134, Italy
| | - Marco Ballotari
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, P.le L.A. Scuro 10, Verona 37134, Italy
| | - Franco Tagliaro
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, P.le L.A. Scuro 10, Verona 37134, Italy.,Laboratory of Pharmacokinetics and Metabolomics Analysis, Institute of Translational Medicine and Biotechnology, I.M. Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya Street, Moscow 119991, Russia
| | - Federica Bortolotti
- Unit of Forensic Medicine, Department of Diagnostics and Public Health, University of Verona, P.le L.A. Scuro 10, Verona 37134, Italy
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