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Cabarcos-Fernández P, Álvarez-Freire I, Tabernero-Duque M, Bermejo-Barrera A. Quantitative determination of clozapine in plasma using an environmentally friendly technique. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dispersive liquid-liquid microextraction of 11-nor-Δ9-tetrahydrocannabinol-carboxylic acid applied to urine testing. Bioanalysis 2021; 14:87-100. [PMID: 34860122 DOI: 10.4155/bio-2021-0237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aim: THC-COOH is the major metabolite of Δ9-tetrahydrocannabinol commonly tested in urine to determine cannabis intake. In this study, a method based on dispersive liquid-liquid microextraction was developed for testing THC-COOH in urine. Materials & methods: Hydrolyzed urine specimens were extracted via dispersive liquid-liquid microextraction with acetonitrile (disperser solvent) and chloroform (extraction solvent). Derivatization was performed with N,O-Bis(trimethylsilyl)trifluoroacetamide with 1% trichloro(chloromethyl)silane. Analysis was performed by GC-MS/MS. Results: The method showed acceptable linearity (5-500 ng/ml), imprecision (<10.5%) and bias (<4.9%). Limits of detection and quantitation were 1 and 5 ng/ml, respectively. Twenty-four authentic samples were analyzed, with 22 samples being positive for THC-COOH. Conclusion: The proposed method is more environmentally friendly and provided good sensitivity, selectivity and reproducibility.
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A comprehensive review on application of the syringe in liquid- and solid-phase microextraction methods. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-020-02025-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Cabarcos-Fernández P, Tabernero-Duque MJ, Álvarez-Freire I, Bermejo-Barrera AM. Determination of Seven Antidepressants in Pericardial Fluid by Means of Dispersive Liquid-Liquid Microextraction (DLLME) and Gas Chromatography-Mass Spectrometry (GC/MS). J Anal Toxicol 2021; 46:bkab003. [PMID: 33410888 PMCID: PMC8866815 DOI: 10.1093/jat/bkab003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/23/2020] [Accepted: 01/07/2021] [Indexed: 01/27/2023] Open
Abstract
Although blood is often used to detect and quantify the presence of drugs, there are some instances where samples obtained from other biological matrices, like pericardial fluid (PF), are necessary since adequate blood samples may not be available. PF is an epicardial transudate, which contains plasma components that include toxicological substances making this sample useful when blood samples are not available. This fluid is a well preserved postmortem sample and can easily be collected in larger amounts without significant contamination, compared with other body fluids. Although studies involving PF began around the 1980's, the adequacy of such fluid as a biological matrix has been poorly investigated. Antidepressants are frequently detected in postmortem samples from forensic cases. Nowadays, they constitute some of the most commonly prescribed drugs worldwide. A total of seven antidepressants (venlafaxine, mirtazapine, olanzapine, paroxetine, sertraline, fluoxetine and citalopram) were evaluated in this study. A new extraction method involving dispersive liquid-liquid microextraction (DLLME) is presented in which chloroform and acetonitrile are determined to be the best extraction and dispersing solvents. The experimental design was achieved using StatGraphics 18. The Response Surface Methodology enabled us to know the optimal volume for the two solvents used in the DLLME. The detection technique used was gas chromatography-mass spectrometry (GC-MS) with electron impact ionization as ionization source. A temperature gradient has been used and the total chromatographic separation time was 19.43 min. Validation results met the international validation guidances (FDA). Under the optimal condition, the method offered good validation parameters showing a new efficient, simple, rapid, and sensitive method. The analytical method was applied to thirty-one pericardial fluid samples. Twenty-one samples were positive with concentrations between 0.19 and 8.48 µg/mL. Venlafaxine and olanzapine were the antidepressants most frequently found.
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Affiliation(s)
- P Cabarcos-Fernández
- Forensic Toxicology Service, Institute of Forensic Sciences, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, Santiago de Compostela, A Coruña 15782, Spain
| | - M J Tabernero-Duque
- Forensic Toxicology Service, Institute of Forensic Sciences, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, Santiago de Compostela, A Coruña 15782, Spain
| | - I Álvarez-Freire
- Forensic Toxicology Service, Institute of Forensic Sciences, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, Santiago de Compostela, A Coruña 15782, Spain
| | - A M Bermejo-Barrera
- Forensic Toxicology Service, Institute of Forensic Sciences, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, Santiago de Compostela, A Coruña 15782, Spain
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Mercieca G, Odoardi S, Mestria S, Cassar M, Strano‐Rossi S. Application of ultrasound‐assisted liquid–liquid microextraction coupled with gas chromatography and mass spectrometry for the rapid determination of synthetic cannabinoids and metabolites in biological samples. J Sep Sci 2020; 43:2858-2868. [DOI: 10.1002/jssc.202000181] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/18/2020] [Accepted: 04/19/2020] [Indexed: 12/24/2022]
Affiliation(s)
| | - Sara Odoardi
- Department of Health Surveillance and BioethicsForensic Toxicology LaboratoryUniversità Cattolica del Sacro Cuore F. Policlinico Gemelli IRCCS Rome Italy
| | - Serena Mestria
- Department of Health Surveillance and BioethicsForensic Toxicology LaboratoryUniversità Cattolica del Sacro Cuore F. Policlinico Gemelli IRCCS Rome Italy
| | - Marisa Cassar
- BioDNA LaboratoriesMalta Life Sciences Park San Gwann Malta
| | - Sabina Strano‐Rossi
- Department of Health Surveillance and BioethicsForensic Toxicology LaboratoryUniversità Cattolica del Sacro Cuore F. Policlinico Gemelli IRCCS Rome Italy
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Müller A, Iwersen-Bergmann S. Determination of ethyl glucuronide in human hair samples: Decontamination vs extraction. Drug Test Anal 2020; 12:948-956. [PMID: 32171047 DOI: 10.1002/dta.2791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/28/2020] [Accepted: 03/10/2020] [Indexed: 01/02/2023]
Abstract
Decontamination of samples prior to analysis is common practice and recommended for ethyl glucuronide (EtG) hair testing. The aim of this study was to evaluate the applied decontamination procedure during routine hair EtG analysis by monitoring the ethyl glucuronide concentrations in the washing solutions from a representative cohort of individual hair samples. Hair samples from 150 individuals were tested for hair EtG by a validated routine procedure (liquid chromatography/tandem mass spectrometry). A four-step decontamination procedure (ethanol, water, acetone, dichloromethane) was applied to all samples prior to analysis. Hair samples from 20 individuals were analyzed along with the complete set of individual washing solutions. Hair samples from an additional 130 individuals were analyzed along with the corresponding aqueous wash fraction only. No EtG was detected in the washing solutions from hair samples that tested negative for EtG (n = 42). Hair samples positive for ethyl glucuronide (n = 108) were found to liberate different amounts of EtG during decontamination: whereas no, or low portions of, EtG (< 10% of extracted hair EtG) were found in the corresponding washing solutions of the majority (n = 91) of individual samples, there was a minority of samples (n = 6) with more than half of the extracted hair EtG present in the decontamination solvent. No correlation of the decontaminated amount of EtG and the extracted hair EtG was observed. Further experimental studies are necessary to investigate if the observed easily removable fraction of EtG is associated with external contamination and if analysis of wash solutions could be helpful for identifying external contamination in hair testing for ethyl glucuronide.
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Affiliation(s)
- Alexander Müller
- Department of Legal Medicine, Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Stefanie Iwersen-Bergmann
- Department of Legal Medicine, Toxicology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Camargo Moreno M, Lewis JB, Kovacs EJ, Lowery EM. Lung allograft donors with excessive alcohol use have increased levels of human antimicrobial peptide LL-37. Alcohol 2019; 80:109-117. [PMID: 30419299 PMCID: PMC6616019 DOI: 10.1016/j.alcohol.2018.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/08/2018] [Accepted: 11/03/2018] [Indexed: 12/18/2022]
Abstract
The relatively low long-term survival rate of lung transplant recipients as compared to other organ recipients serves as an impetus to identify potential lung dysfunction as early as possible. There is an association between donor heavy alcohol use and acute lung injury in the lung allograft after transplant, known as primary graft dysfunction. Excessive alcohol use (EAU) can induce pulmonary immune dysregulation in response to an infection. Antimicrobial peptides (AMPs) are an important component of the innate immune response to pulmonary infections, but the impact of EAU on AMPs in the allograft lung has not been evaluated. Our hypothesis is that specific lung AMPs, LL-37, α-defensin-1,2,3, and β-defensin-2, are dysregulated in the lungs from organ donors who had EAU. In this prospective observational investigation, we measured AMPs via ELISA and inflammatory cytokines via multiplex bead array, in bronchoalveolar lavage (BAL) fluid of lung allograft donors, comparing results based on their alcohol consumption. LL-37 levels in lung donors with EAU were found to be increased compared to nondrinker (ND) donors [median 7.7 ng/mL (IQR 4.1-37.0) vs. 2.3 ng/mL (IQR 1.1-7.9), p = 0.004], whereas α-defensins-1,2,3 were decreased only in the presence of an infection in donors with EAU compared to ND donors [median 2.2 ng/mL (IQR 1.6-2.4) vs. 3.2 ng/mL (IQR 2.3-3.8), p = 0.049]. There was no difference in β-defensin-2 levels. Gene expression levels of these AMPs were not different. Elevated levels of CXCL8 were noted in bronchial washings of donors with EAU compared to ND donors, [median 4372 pg/mL (IQR 3352-13180) vs. 867.3 pg/mL (IQR 163.6-3675), p = 0.04], suggesting a potentially heightened inflammatory response. At 1 month post-transplant, LL-37 and CXCL8 levels are decreased compared to levels at time of transplant. In lung donors with EAU, LL-37 and α-defensins-1,2,3 dysregulated levels in the presence of an infection may be a harbinger of dysfunction of the lungs through the transplant process.
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Affiliation(s)
- M Camargo Moreno
- Alcohol Research Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Campus, 2160 S. 1st Ave., Maywood, IL, 60153, United States; Burn and Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Health Sciences Campus, 2160 S. 1st Ave., Maywood, IL, 60153, United States
| | - J B Lewis
- Burn and Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Health Sciences Campus, 2160 S. 1st Ave., Maywood, IL, 60153, United States
| | - E J Kovacs
- Department of Surgery, University of Colorado School of Medicine, 12631 E. 17th Avenue, Aurora, CO, 80045, United States; Alcohol Research Program, University of Colorado School of Medicine, 12700 E. 19th Avenue, Aurora, CO, 80045, United States
| | - E M Lowery
- Alcohol Research Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Campus, 2160 S. 1st Ave., Maywood, IL, 60153, United States; Burn and Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Health Sciences Campus, 2160 S. 1st Ave., Maywood, IL, 60153, United States.
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Nguyen VL, Fitzpatrick M. Should phosphatidylethanol be currently analysed using whole blood, dried blood spots or both? ACTA ACUST UNITED AC 2019; 57:617-622. [DOI: 10.1515/cclm-2018-0667] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/09/2018] [Indexed: 11/15/2022]
Abstract
Abstract
Phosphatidylethanol (PEth) are phospholipids produced through non-oxidative ethanol metabolism. They accumulate in red blood cells and have been traditionally analysed in whole blood as potential biomarkers for moderate to long-term alcohol consumption. More recently, their analysis in dried blood spots has been gaining favour, namely, due to the ease in sampling, transport and storage conditions required. This paper aims at providing a short comparative review between analysing PEth in whole blood and dried blood spots and the potential pitfalls that researchers may face when setting up PEth testing for clinical use.
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Woźniak MK, Wiergowski M, Namieśnik J, Biziuk M. Biomarkers of Alcohol Consumption in Body Fluids - Possibilities and Limitations of Application in Toxicological Analysis. Curr Med Chem 2019; 26:177-196. [PMID: 28982313 DOI: 10.2174/0929867324666171005111911] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 08/08/2016] [Accepted: 09/05/2016] [Indexed: 12/30/2022]
Abstract
BACKGROUND Ethyl alcohol is the most popular legal drug, but its excessive consumption causes social problems. Despite many public campaigns against alcohol use, car accidents, instances of aggressive behaviour, sexual assaults and deterioration in labor productivity caused by inebriated people is still commonplace. Fast and easy diagnosis of alcohol consumption is required in order to introduce proper and effective therapy, and is crucial in forensic toxicology analysis. The easiest method to prove alcohol intake is determination of ethanol in body fluids or in breath. However, since ethanol is rapidly metabolized in the human organism, only recent consumption can be detected using this method. Because of that, the determination of alcohol biomarkers was introduced for monitoring alcohol consumption over a wider range of time. OBJECTIVE The objective of this study was to review published studies focusing on the sample preparation methods and chromatographic or biochemical techniques for the determination of alcohol biomarkers in whole blood, plasma, serum and urine. METHODS An electronic literature search was performed to discuss possibilities and limitations of application of alcohol biomarkers in toxicological analysis. RESULTS Authors described the markers of alcohol consumption such as: ethanol, its nonoxidative metabolites (ethyl glucuronide, ethyl sulfate, phosphatidylethanol, ethyl phosphate, fatty acid ethyl esters) and oxidative metabolites (acetaldehyde and acetaldehyde adducts). We also discussed issues concerning the detection window of these biomarkers, and possibilities and limitations of their use in routine analytical toxicology for monitoring alcohol consumption or sobriety during alcohol therapy.
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Affiliation(s)
- Mateusz Kacper Woźniak
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology (GUT), 11/12 Narutowicza Str., Gdansk 80-233, Poland
| | - Marek Wiergowski
- Chair & Department of Forensic Medicine, Faculty of Medicine, Medical University of Gdansk (MUG), 3a M. Skłodowskiej-Curie Str., Gdansk 80-210, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology (GUT), 11/12 Narutowicza Str., Gdansk 80-233, Poland
| | - Marek Biziuk
- Department of Analytical Chemistry, Faculty of Chemistry, Gdansk University of Technology (GUT), 11/12 Narutowicza Str., Gdansk 80-233, Poland
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Mercieca G, Odoardi S, Cassar M, Strano Rossi S. Rapid and simple procedure for the determination of cathinones, amphetamine-like stimulants and other new psychoactive substances in blood and urine by GC–MS. J Pharm Biomed Anal 2018; 149:494-501. [DOI: 10.1016/j.jpba.2017.11.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/03/2017] [Accepted: 11/05/2017] [Indexed: 10/18/2022]
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Hamidi S, Alipour-Ghorbani N. Liquid-phase microextraction of biomarkers: A review on current methods. J LIQ CHROMATOGR R T 2017. [DOI: 10.1080/10826076.2017.1374291] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Samin Hamidi
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nastaran Alipour-Ghorbani
- Laboratory of Dendrimers and Nano-Biopolymers, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, Iran
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Duarte M, Jagadeesan KK, Billing J, Yilmaz E, Laurell T, Ekström S. Solid-phase extraction of the alcohol abuse biomarker phosphatidylethanol using newly synthesized polymeric sorbent materials containing quaternary heterocyclic groups. J Chromatogr A 2017; 1519:1-8. [DOI: 10.1016/j.chroma.2017.08.051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 05/18/2017] [Accepted: 08/19/2017] [Indexed: 01/28/2023]
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Andreassen TN, Havnen H, Spigset O, Falch BMH, Skråstad RB. High Throughput UPLC®-MSMS Method for the Analysis of Phosphatidylethanol (PEth) 16:0/18:1, a Specific Biomarker for Alcohol Consumption, in Whole Blood. J Anal Toxicol 2017; 42:33-41. [DOI: 10.1093/jat/bkx075] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/15/2017] [Indexed: 12/11/2022] Open
Affiliation(s)
| | - Hilde Havnen
- Department of Clinical Pharmacology, St. Olav University Hospital, 7006 Trondheim, Norway
| | - Olav Spigset
- Department of Clinical Pharmacology, St. Olav University Hospital, 7006 Trondheim, Norway
- Department of Laboratory Medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway
| | | | - Ragnhild Bergene Skråstad
- Department of Clinical Pharmacology, St. Olav University Hospital, 7006 Trondheim, Norway
- Department of Laboratory Medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway
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Ullah S, Helander A, Beck O. Identification and quantitation of phosphatidylethanols in oral fluid by liquid chromatography-tandem mass spectrometry. Clin Chem Lab Med 2017; 55:1332-1339. [PMID: 27988502 DOI: 10.1515/cclm-2016-0752] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 10/31/2016] [Indexed: 01/29/2023]
Abstract
BACKGROUND Phosphatidylethanols (PEth) are formed from phosphatidylcholines and ethanol and are used as a specific and sensitive alcohol biomarker. An analytical method for analysis of PEth in oral fluid based on high-performance liquid chromatography coupled to a quadrupole tandem mass spectrometer (LC-MS/MS) was developed and validated and applied on samples collected from patients undergoing alcohol detoxification. METHODS A 200-μL aliquot of oral fluid, collected using the QuantisalTM device, was extracted with chloroform/methanol containing internal standard and subjected to LC-MS/MS analysis of three selected PEth forms (16:0/16:0, 16:0/18:1, and 16:0/18:2). Chromatographic separation was achieved on a UPLC BEH phenyl column, using a mobile phase consisting of acetonitrile and water containing 10 mmol/L ammonium hydrogen carbonate with 0.1% ammonia. The MS instrument was operated in negative electrospray ionization and selected reaction monitoring mode. RESULTS The detection limit for PEth 16:0/16:0, 16:0/18:1, and 16:0/18:2 was ~0.1 ng/mL, and the extraction recoveries at 2.0 ng/mL were in the range of 99%-114%. Method linearity over a concentration range up to 200 ng/mL was ≥0.99. No significant deviation in results was observed in an analyte stability study of two different concentrations at two different temperatures over 3 months. In 35 oral fluid samples collected from patients undergoing alcohol detoxification, the highest concentration was observed for PEth 16:0/18:1 (Detected range, 0.51-55.3 ng/mL; mean, 8.5; median, 3.1). In addition, all three PEth forms were variably identified in a majority (63%) of the oral fluid samples. The PEth 16:0/18:1 values in oral fluid showed a weak positive correlation with the corresponding values in whole blood samples (r=0.50, p=0.026, n=20). CONCLUSIONS The LC-MS/MS method could reliably detect and quantify PEth in oral fluid samples collected after alcohol exposure. The method was characterized by validation data with satisfactory recovery, sensitivity, accuracy, and imprecision, and applied for analysis of clinical samples. The results suggest that measurement of PEth in oral fluid can be used as a biomarker for alcohol consumption, and as such a non-invasive complement to analysis in blood. However, further studies are required to evaluate the test characteristics (e.g. sensitivity and half-life) in comparison with PEth in blood.
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Boll R, Johnson T, Kaaks R, Kühn T, Skopp G. Is it possible to detect PEth 16:0/18:1 and PEth 18:1/18:1 in red blood cells after 20 years of storage in liquid nitrogen? Int J Legal Med 2017. [PMID: 28647811 DOI: 10.1007/s00414-017-1626-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Phosphatidylethanol (PEth), as measured in freshly drawn blood samples, could be a promising new biomarker for habitual alcohol consumption, but it is still unknown whether PEth can also be determined from blood samples having been stored frozen for a longer period. MATERIALS AND METHODS PEth 16:0/18:1 and PEth 18:1/18:1 were determined by LC-MS/MS from red blood cells (RBC) derived from blood samples of (I) 20 healthy volunteers (after 1 month of storage at -80 °C) and (II) 232 participants of the population-based European Prospective Investigation into Cancer and Nutrition (EPIC)-Heidelberg study (after 20 years of storage at -196 °C). Analyses involved liquid-liquid extraction from 100 μl aliquots with phosphatidylpropanol (PProp 18:1/18:1) as the internal standard. Extracts were subjected to a 10-min LC gradient separation, using multiple reaction monitoring of deprotonated molecules for quantification. RESULTS After 1 month of storage at -80 °C, PEth was detectable in all samples at mean concentrations of 393.6 ± 12.4 ng/ml (PEth 16:0/18:1) and 43.3 ± 1.1 ng/ml (PEth 18:1/18:1). In samples stored for 20 years at -196 °C, PEth was detectable in 23.7% of all samples at mean concentrations of 412.2 ± 655.5 ng/ml (PEth 16:0/18:1) and 38.0 ± 74.8 ng/ml (PEth 18:1/18:1). DISCUSSION AND CONCLUSION PEth can be determined reliably from samples of moderate habitual alcohol consumers after 1 month of storage at -80 °C. Our data suggest that PEth is generally also detectable in samples after 20 years of storage at -196 °C. Further studies are needed to assess the still unknown impact of storage duration and temperature on different PEth specimen concentrations.
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Affiliation(s)
- Robert Boll
- Institute of Legal and Traffic Medicine, University Hospital Heidelberg, Voss-Str. 2, 69115, Heidelberg, Germany.
| | - Theron Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Gisela Skopp
- Institute of Legal and Traffic Medicine, University Hospital Heidelberg, Voss-Str. 2, 69115, Heidelberg, Germany
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Wang S, Yang R, Ji F, Li H, Dong J, Chen W. Sensitive and precise monitoring of phosphatidylethanol in human blood as a biomarker for alcohol intake by ultrasound-assisted dispersive liquid-liquid microextraction combined with liquid chromatography tandem mass spectrometry. Talanta 2017; 166:315-320. [DOI: 10.1016/j.talanta.2017.01.083] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 01/15/2023]
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Zhang X, Zheng F, Lin Z, Johansen SS, Yu T, Liu Y, Huang Z, Li J, Yan J, Rao Y. Simultaneous determination of ethanol's four types of non-oxidative metabolites in human whole blood by liquid chromatography tandem mass spectrometry. Anal Chim Acta 2017; 963:68-75. [PMID: 28335977 DOI: 10.1016/j.aca.2017.01.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 01/13/2017] [Accepted: 01/22/2017] [Indexed: 01/25/2023]
Abstract
The importance of ethanol non-oxidative metabolites as the specific biomarkers of alcohol consumption in clinical and forensic settings is increasingly acknowledged. Simultaneous determination of these metabolites can provide a wealth of information like drinking habit and history, but it was difficult to achieve because of their wide range of polarity. This work describes development and validation of a simple liquid chromatography tandem mass spectrometry (LC-MS/MS) assay for 4 types of ethanol non-oxidative metabolites (ethyl glucuronide, ethyl sulfate, fatty acid ethyl esters and phosphatidylethanols) in 50 μL of human whole blood. Pretreatment method, column and MS conditions were optimized. For the first time, the four types of ethanol non-oxidative metabolites with enormous discrepancies of property were simultaneously extracted and analyzed in one run within 40 min. The limits of detections (LODs) were among 0.1-10 ng/mL, and good linearity was obtained. Deviations in precision and accuracy were all lower than 15% at three QC levels. This method was then applied to two forensic samples, resulting in information on drinking habits and drinking time which were very useful for the interpretation of the blood alcohol results.
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Affiliation(s)
- Xinyu Zhang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China; Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Feng Zheng
- Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing, 210009, PR China
| | - Zebin Lin
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Sys Stybe Johansen
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Frederik V's Vej 11, 2100, Copenhagen, Denmark
| | - Tianfang Yu
- Department of Clinical Medicine, Shanghai Medical College, Fudan University, Shanghai, 200032, PR China
| | - Yuming Liu
- Department of Clinical Medicine, Shanghai Medical College, Fudan University, Shanghai, 200032, PR China
| | - Zhibin Huang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Jiaolun Li
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, PR China
| | - Yulan Rao
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, PR China.
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Alternative sampling strategies for the assessment of alcohol intake of living persons. Clin Biochem 2016; 49:1078-91. [PMID: 27208822 DOI: 10.1016/j.clinbiochem.2016.05.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/28/2016] [Accepted: 05/01/2016] [Indexed: 01/16/2023]
Abstract
Monitoring of alcohol consumption by living persons takes place in various contexts, amongst which workplace drug testing, driving under the influence of alcohol, driving licence regranting programs, alcohol withdrawal treatment, diagnosis of acute intoxication or fetal alcohol ingestion. The matrices that are mostly used today include blood, breath and urine. The aim of this review is to present alternative sampling strategies that allow monitoring of the alcohol consumption in living subjects. Ethanol itself, indirect (carbohydrate deficient transferrin, CDT%) as well as direct biomarkers (ethyl glucuronide, EtG; ethyl sulphate, EtS; fatty acid ethyl esters, FAEEs and phosphatidylethanol species, PEths) of ethanol consumption will be considered. This review covers dried blood spots (CDT%, EtG/EtS, PEths), dried urine spots (EtG/EtS), sweat and skin surface lipids (ethanol, EtG, FAEEs), oral fluid (ethanol, EtG), exhaled breath (PEths), hair (EtG, FAEEs), nail (EtG), meconium (EtG/EtS, FAEEs), umbilical cord and placenta (EtG/EtS and PEth 16:0/18:1). Main results, issues and considerations specific to each matrix are reported. Details about sample preparation and analytical methods are not within the scope of this review.
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Bioanalytical procedures and developments in the determination of alcohol biomarkers in biological specimens. Bioanalysis 2016; 8:229-51. [DOI: 10.4155/bio.15.240] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Excessive alcohol consumption is a global problem, and consequently its evaluation is of great clinical and forensic interest. Alcohol biomarkers have been the focus of several research works in the past decades, with new compounds being studied in more recent years. The main objective of this review is to discuss topics for an analyst to consider when evaluating alcohol consumption through the analysis of alcohol biomarkers in biological specimens. For this, existing alcohol biomarkers will be reviewed, including carbohydrate-deficient transferrin, 5-hydroxytryptophol, ethanol, hemoglobin-associated acetaldehyde, fatty acid ethyl esters, ethyl glucuronide, ethyl sulfate and phosphatidylethanol. Additionally, their potential will be discussed, as well as analytical considerations, main challenges, limitations, data interpretation and existing methodologies for their determination in biological specimens.
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YILMAZ E, SOYLAK M. Latest trends, green aspects, and innovations in liquid-phase--based microextraction techniques: a review. Turk J Chem 2016. [DOI: 10.3906/kim-1605-26] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Fisichella M, Odoardi S, Strano-Rossi S. High-throughput dispersive liquid/liquid microextraction (DLLME) method for the rapid determination of drugs of abuse, benzodiazepines and other psychotropic medications in blood samples by liquid chromatography–tandem mass spectrometry (LC-MS/MS) and application to forensic cases. Microchem J 2015. [DOI: 10.1016/j.microc.2015.05.009] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Odoardi S, Fisichella M, Romolo FS, Strano-Rossi S. High-throughput screening for new psychoactive substances (NPS) in whole blood by DLLME extraction and UHPLC–MS/MS analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2015. [DOI: 10.1016/j.jchromb.2015.07.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cabarcos P, Álvarez I, Tabernero MJ, Bermejo AM. Determination of direct alcohol markers: a review. Anal Bioanal Chem 2015; 407:4907-25. [DOI: 10.1007/s00216-015-8701-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 03/26/2015] [Accepted: 04/13/2015] [Indexed: 12/15/2022]
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Cabarcos P, Tabernero MJ, Otero JL, Míguez M, Bermejo AM, Martello S, De Giovanni N, Chiarotti M. Quantification of fatty acid ethyl esters (FAEE) and ethyl glucuronide (EtG) in meconium for detection of alcohol abuse during pregnancy: Correlation study between both biomarkers. J Pharm Biomed Anal 2014; 100:74-78. [PMID: 25137651 DOI: 10.1016/j.jpba.2014.07.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/30/2014] [Accepted: 07/23/2014] [Indexed: 10/25/2022]
Abstract
This article presents results from 47 meconium samples, which were analyzed for fatty acid ethyl esters (FAEE) and ethyl glucuronide (EtG) for detection of gestational alcohol consumption. A validated microwave assisted extraction (MAE) method in combination with GC-MS developed in the Institute of Forensic Science (Santiago de Compostela) was used for FAEE and the cumulative concentration of ethyl myristate, ethyl palmitate and ethyl stearate with a cut-off of 600ng/g was applied for interpretation. A simple method for identification and quantification of EtG has been evaluated by ultrasonication followed solid phase extraction (SPE). Successful validation parameters were obtained for both biochemical markers of alcohol intake. FAEE and EtG concentrations in meconium ranged between values lower than LOD and 32,892ng/g or 218ng/g respectively. We have analyzed FAEE and EtG in the same meconium aliquot, enabling comparison of the efficiency of gestational ethanol exposure detection. Certain agreement between the two biomarkers was found as they are both a very specific alcohol markers, making it a useful analysis for confirmation.
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Affiliation(s)
- Pamela Cabarcos
- Institute of Forensic Science, Forensic Toxicology Service, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, 15782 Santiago de Compostela, Spain.
| | - María Jesús Tabernero
- Institute of Forensic Science, Forensic Toxicology Service, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, 15782 Santiago de Compostela, Spain
| | - José Luís Otero
- Department of Biostatistics, School of Medicine, University of Santiago de Compostela, Spain
| | - Martha Míguez
- Institute of Forensic Science, Forensic Toxicology Service, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, 15782 Santiago de Compostela, Spain
| | - Ana María Bermejo
- Institute of Forensic Science, Forensic Toxicology Service, Faculty of Medicine, University of Santiago de Compostela, C/San Francisco s/n, 15782 Santiago de Compostela, Spain
| | - Simona Martello
- Institute of Public Health, Section of Legal Medicine, Catholic University of Sacred Heart, Rome, L.go F. Vito 1, 00168 Rome, Italy
| | - Nadia De Giovanni
- Institute of Public Health, Section of Legal Medicine, Catholic University of Sacred Heart, Rome, L.go F. Vito 1, 00168 Rome, Italy
| | - Marcello Chiarotti
- Institute of Public Health, Section of Legal Medicine, Catholic University of Sacred Heart, Rome, L.go F. Vito 1, 00168 Rome, Italy
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