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https://www.readbyqxmd.com/read/27916403/stability-of-synthetic-cathinones-in-oral-fluid-samples
#1
Briana Miller, Jiyoung Kim, Marta Concheiro
Synthetic cathinones are new stimulant drugs derived from cathinone that have been sold as "legal highs" worldwide. These compounds can elicit powerful effects such as delusions, hallucinations as well as other potentially dangerous behavior. New analogs with varying effects and potencies are constantly introduced in the market to evade legislation, and they are not detected by routine screening and confirmation methods. Oral fluid is an alternative matrix of increasing interest in forensic toxicology. Its collection is non-invasive and easily supervised, and positive drug findings typically reflect recent drug exposure...
December 1, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27915431/time-dependent-postmortem-redistribution-of-morphine-and-its-metabolites-in-blood-and-alternative-matrices-application-of-ct-guided-biopsy-sampling
#2
Sandra N Staeheli, Dominic Gascho, Lars C Ebert, Thomas Kraemer, Andrea E Steuer
Interpretation of postmortem morphine concentrations in forensic toxicology provides several pitfalls such as missing information on tolerance, analyte stability, or postmortem redistribution (PMR). Recently, it had been shown that computed tomography (CT)-guided collection of biopsies using a robotic arm (virtobot) provides a valuable strategy for systematic studies on time-dependent PMR. Using this technique, time-dependent PMR of morphine and its metabolites was investigated in 12 cases. At admission to the institute (t1), femoral and heart blood (right ventricle) as well as biopsies from the right lung, the right kidney, liver, spleen, and muscle tissue were collected...
December 3, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27914552/preserved-brains-from-the-spanish-civil-war-mass-grave-1936-at-la-pedraja1-burgos-spain
#3
Fernando Serrulla, Lourdes Herrasti, Carmen Navarro, Jose Luis Cascallana, Ana Maria Bermejo, Nicholas Marquez-Grant, Francisco Etxeberria
During the excavation of the Spanish Civil War mass grave at La Pedraja (Burgos, Spain), 104 individuals were found interred within it, 45 of which displayed brains that were preserved but dehydrated and reduced in size. This exceptional finding has resulted in the formation of a multidisciplinary team, with the aim of obtaining as much information as possible and to primarily understand the taphonomic phenomena that has led to the preservation of these brains. The following types of analyses were undertaken on three of these brains: macroscopy, histology, radiology, chemical-toxicology, genetics, chemical analysis of the soil and 3D modelling for stereolithography...
December 2016: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/27899215/toxicology-in-international-drug-control-prioritizing-the-most-harmful-persistent-and-prevalent-substances
#4
Susan C Ifeagwu, Martin Raithelhuber, Conor Crean, Dimitri Gerostamoulos, Heesun Chung, Justice N Tettey
The nature of the global drugs market has evolved rapidly and has become more complex with the emergence of new psychoactive substances (NPS), some of which have been associated with increased abuse, hospital emergency admissions and sometimes fatalities. NPS are characterized by geographic heterogeneity, with some only transient in nature and others not satisfying the criteria for harm required for international control. Consequently, a pragmatic response of the international community is to prioritize the most harmful, persistent and prevalent substances for action - an objective, which is hampered by the paucity of data on harms...
November 20, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27890104/an-autopsy-case-of-spontaneous-esophageal-perforation-boerhaave-syndrome
#5
Kaori Kimura-Kataoka, Junko Fujihara, Satsuki Kurata, Yoshikazu Takinami, Ken Inoue, Toshihiro Yasuda, Haruo Takeshita
A 45-year-old male, an alcohol addict with asthma, was found dead in his home, after several days of continued drinking. A forensic autopsy was performed 3days after the discovery of his death in order to specify the cause of death. A longitudinal perforation penetrating all layers of the esophagus measuring 1.8cm was present on the left wall approximately 2.0cm from the gastroesophageal junction. There were 1900mL of greenish to brownish turbid liquid in the left pleural cavity and 150mL of greenish viscous liquid in the stomach...
November 2016: Legal Medicine
https://www.readbyqxmd.com/read/27881618/simultaneous-screening-and-quantification-of-basic-neutral-and-acidic-drugs-in-blood-using-uplc-qtof-ms
#6
Sergei Bidny, Kim Gago, Phuong Chung, Desdemona Albertyn, Daniel Pasin
An analytical method using ultra performance liquid chromatography (UPLC) quadrupole time-of-flight mass spectrometry (QTOF-MS) was developed and validated for the targeted toxicological screening and quantification of commonly used pharmaceuticals and drugs of abuse in postmortem blood using 100 µL sample. It screens for more than 185 drugs and metabolites and quantifies more than 90 drugs. The selected compounds include classes of pharmaceuticals and drugs of abuse such as: antidepressants, antipsychotics, analgesics (including narcotic analgesics), anti-inflammatory drugs, benzodiazepines, beta-blockers, amphetamines, new psychoactive substances (NPS), cocaine and metabolites...
November 22, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27874190/the-value-of-outsourcing-selected-cases-in-a-medical-examiner-population-a-10-year-experience
#7
Brandi C McCleskey, Stephanie D Reilly, Dan Atherton
Due to increasing caseloads and inadequate staffing, the burden on Coroner/Medical Examiner Offices to comply with recommended autopsy limits for forensic pathologists (FPs) has been difficult. Since 2006, pathologists at the University of Alabama at Birmingham have performed select autopsies for the Alabama Department of Forensic Sciences. Each case was reviewed by a state FP and scene investigator to determine appropriateness for referral. All referred cases received full postmortem examination including microscopic examination and collection of toxicological samples, and toxicology was ordered by the referring FP as appropriate...
November 22, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27869443/-post-mortem-investigation-of-alveolar-air-in-forensic-practice
#8
Miroslav Bauer, Jiřina Bauerová, Ján Šikuta, Jozef Šidlo
Exhaled air from biological materials is used for the purpose of toxicologico-chemical analysis particularly in detecting of alcohol influence in traffic or within a working process. Similarly, still a more and more actual requirement seems to be a necessity to analyse alveolar air from necroptic material. This necessity is emphasised not only by the fact, that inhalant intoxications in the form of poisoning represent their substantial part, but also a demand to evidence exactly a noxious agent both specifically and also in at least two materials...
2016: Soudní Lékarství
https://www.readbyqxmd.com/read/27864965/attempted-drug-facilitated-sexual-assault-xylazine-intoxication-in-a-child
#9
Hilke Andresen-Streichert, Stefanie Iwersen-Bergmann, Alexander Mueller, Sven Anders
There are only a few cases of drug-facilitated sexual assaults on children reported in the literature so far. Here, a case of a four-year-old boy is presented. He was unconscious, and the accompanying adults reported that the child had been at a playground on his own. Returning home, he complained of having been stung and collapsed immediately. Urine and serum samples of the child were investigated. In the toxicological analysis, xylazine, a sedative and muscle relaxant used in animals, was detected. Subsequent quantification by GC/MS after solid-phase extraction revealed 0...
November 16, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27864951/evaluation-of-the-role-of-toxicological-data-in-discriminating-between-h2-s-femoral-blood-concentration-secondary-to-lethal-poisoning-and-endogenous-h2-s-putrefactive-production
#10
Nunziata Barbera, Angelo Montana, Francesca Indorato, Nadia Arbouche, Guido Romano
Hydrogen sulfide is a colorless gas and has a strong odor of rotten eggs. It is absorbed by the upper respiratory tract mucosa, and it causes histotoxic hypoxemia and respiratory depression by exerting an inhibitory effect on cytochrome oxidase. To evaluate the role of toxicological data in distinguishing between the H2 S blood concentration secondary to lethal poisoning and the endogenous H2 S produced during putrefaction, we compared the postmortem H2 S concentrations of six fatal H2 S poisoning cases (8...
November 16, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27863142/identification-and-analytical-characterization-of-nine-synthetic-cathinone-derivatives-n-ethylhexedrone-4-cl-pentedrone-4-cl-%C3%AE-eapp-propylone-n-ethylnorpentylone-6-meo-bk-mdma-%C3%AE-pihp-4-cl-%C3%AE-php-and-4-f-%C3%AE-php
#11
Cuimei Liu, Wei Jia, Tao Li, Zhendong Hua, Zhenhua Qian
Clinical and forensic toxicology laboratories are continuously confronted by analytical challenges when dealing with the new psychoactive substances phenomenon. In this study, the analytical characterization of nine synthetic cathinones is described: 2-(ethylamino)-1-phenylhexan-1-one (N-ethylhexedrone 1), 1-(4-chlorophenyl)-2-(methylamino)pentan-1-one (4-Cl-pentedrone 2), 1-(4-chlorophenyl)-2-(ethylamino)pentan-1-one (4-Cl-α-EAPP 3), 1-(3,4-methylenedioxyphenyl)-2-propylaminopropan-1-one (propylone 4), 1-(3,4-methylenedioxyphenyl)-2-ethylaminopentan-1-one (N-ethylnorpentylone 5), 1-(6-methoxy-3,4-methylenedioxyphenyl)-2-methylaminopropan-1-one (6-MeO-bk-MDMA 6), 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (α-PiHP 7), 1-(4-chlorophenyl)-2-(pyrrolidin-1-yl)hexan-1-one (4-Cl-α-PHP 8), and 1-(4-fluorophenyl)-2-(pyrrolidin-1-yl)hexan-1-one (4-F-α-PHP 9)...
November 9, 2016: Drug Testing and Analysis
https://www.readbyqxmd.com/read/27851687/determination-of-antidepressants-in-hair-via-uhplc-ms-ms-as-a-complementary-informative-tool-for-clinical-and-forensic-toxicological-assessments
#12
María Del Mar Ramírez Fernández, Sarah M R Wille, Virginia Hill, Nele Samyn
BACKGROUND: Hair analysis is a complementary approach for the detection of antidepressants (ADs) in clinical and forensic schemes because it yields a picture of long-term exposure over a time window depending on the length of the hair. METHODS: A fast and sensitive ultra-high performance liquid chromatography tandem mass spectrometry method using a BEH C18 column with a mobile phase consisting of ammonium acetate/acetonitrile was developed and validated according to international guidelines for the simultaneous analysis of 24 ADs in hair...
December 2016: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/27842791/forensic-toxicology-an-introduction
#13
REVIEW
Michael P Smith, Martin H Bluth
This article presents an overview of forensic toxicology. The authors describe the three components that make up forensic toxicology: workplace drug testing, postmortem toxicology, and human performance toxicology. Also discussed are the specimens that are tested, the methods used, and how the results are interpreted in this particular discipline.
December 2016: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/27834143/distribution-of-synthetic-cannabinoids-jwh-210-rcs-4-and-%C3%A2-9-tetrahydrocannabinol-after-intravenous-administration-to-pigs
#14
Nadine Schaefer, Mattias Kettner, Matthias W Laschke, Julia Schlote, Andreas H Ewald, Michael D Menger, Hans H Maurer, Peter H Schmidt
Synthetic cannabinoids (SCs) have become an increasing issue in forensic toxicology. Controlled human studies evaluating pharmacokinetic data of SCs are lacking and only few animal studies have been published. Thus, an interpretation of analytical results found in intoxicated or poisoned individuals is difficult. Therefore, the distribution of two selected SCs, namely 4-ethylnaphthalen-1-yl-(1-pentylindol-3-yl)methanone (JWH-210) and 2-(4-methoxyphenyl)-1-(1-pentyl-indol-3-yl)methanone (RCS-4) as well as ∆9-tetrahydrocannabinol (THC) as reference were examined in pigs...
November 11, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27829332/in-vitro-metabolite-profiling-of-adb-fubinaca-a-new-synthetic-cannabinoid
#15
Jeremy Carlier, Xingxing Diao, Ariane Wohlfarth, Karl Scheidweiler, Marilyn A Huestis
Metabolite profiling of novel psychoactive substances (NPS) is critical for documenting drug consumption. N-(1-amino-3,3-dimethyl-1-oxobutan-2-yl)-1-(4-fluorobenzyl)-1H-indazole-3-carboxamide (ADB-FUBINACA) is an emerging synthetic cannabinoid whose toxicological and metabolic data are currently unavailable. We aimed to determine optimal markers for identifying ADB-FUBINACA intake. Metabolic stability was evaluated with human liver microsome incubations. Metabolites were identified after 1 and 3 h incubation with pooled human hepatocytes, liquid chromatography- high resolution mass spectrometry in positive-ion mode (5600+ TripleTOF®, Sciex) and several data mining approaches (MetabolitePilot™, Sciex)...
November 8, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27825624/quantification-of-suvorexant-in-urine-using-gas-chromatography-mass-spectrometry
#16
Mariah Carson, Sarah Kerrigan
Suvorexant (Belsomra(®)) is a novel sedative hypnotic drug that is prescribed to promote sleep in patients with insomnia. It is the first of a new class of drugs classified as dual orexin receptor antagonists (DORAs). Sedative hypnotics with central nervous system depressant effects feature prominently in forensic toxicology investigations. For this reason, a new analytical method was developed to identify suvorexant in urine using liquid-liquid extraction (LLE) and gas chromatography/mass spectrometry (GC/MS)...
November 2, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27810588/cyclists-fatalities-forensic-remarks-regarding-335-cases
#17
M Piras, M C Russo, F De Ferrari, A Verzeletti
A retrospective study was carried out on post-mortem examination data regarding 335 cyclists involved in fatal accidents along the period 1983-2012. The following variables were considered: temporal data (year, month, day of the week and hour of the day), circumstances of the accident, vehicles involved, victims' features (sex, age), pathological and toxicological findings, cause of death. Most victims were male (77.62%), with a mean age of 58 years. In most cases vehicles other than only bicycles were involved, more frequently cars, followed by heavy motor vehicles...
November 2016: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/27776637/untargeted-screening-of-unknown-xenobiotics-and-potential-toxins-in-plasma-of-poisoned-patients-using-high-resolution-mass-spectrometry-generation-of-xenobiotic-fingerprint-using-background-subtraction
#18
Chang Chen, Ariane Wohlfarth, Hui Xu, Dan Su, Xin Wang, Hongliang Jiang, Yulin Feng, Mingshe Zhu
A novel analytical workflow was developed and applied for the detection and identification of unknown xenobiotics in biological samples. High-resolution mass spectrometry (HRMS)-based data-independent MS(E) acquisition was employed to record full scan MS and fragment spectral datasets of test and control samples. Then, an untargeted data-mining technique, background subtraction, was utilized to find xenobiotics present only in test samples. Structural elucidation of the detected xenobiotics was accomplished by database search, spectral interpretation, and/or comparison with reference standards...
November 9, 2016: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27741126/lessons-learned-from-poisoning-cases-caused-by-2-illegal-rodenticides-tetramine-and-fluoroacetamide
#19
Rongshuai Wang, Luo Zhuo, Yunyun Wang, Liang Ren, Qian Liu, Liang Liu
BACKGROUND: Tetramine (tetramethylene disulphotetramine, TETS) and fluoroacetamide (FAA) are known as illegal rodenticides with high toxicity to animal species and human beings, which could lead to severe clinical features, including reduction of consciousness, convulsions, coma, and even death. METHODS AND RESULTS: We presented 2 cases that involved rodenticides poisoning. Even though the patients showed severe manifestations, they were initially misdiagnosed, resulting in 2 persons finally died from TETS and FAA poisoning in homicide cases...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27736030/studies-on-the-metabolism-of-the-fentanyl-derived-designer-drug-butyrfentanyl-in-human-in-vitro-liver-preparations-and-authentic-human-samples-using-liquid-chromatography-high-resolution-mass-spectrometry-lc-hrms
#20
Andrea E Steuer, Elena Williner, Sandra N Staeheli, Thomas Kraemer
Increasing numbers of new psychoactive substances (NPS) among them fentanyl derivatives has been reported by the European monitoring centre for drugs and drug addiction (EMCDDA). Butyrfentanyl is a new fentanyl derivative whose potency ratio was found to be seven compared to morphine and 0.13 compared to fentanyl. Several case reports on butyrfentanyl intoxications have been described. Little is known about its pharmacokinetic properties including its metabolism. However, knowledge of metabolism is essential for analytical detection in clinical and forensic toxicology...
October 13, 2016: Drug Testing and Analysis
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