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Dilek Battal et al.
Therapeutic drug monitoring, 37(6), 805-811 (2015-05-21)
Mescaline, the primary psychoactive chemical in peyote cactus, has been consumed for thousands of years in ancient religious ceremonies. The US military wanted to determine if mescaline intake was a problem for personnel readiness. Twenty thousand seventeen urine specimens negative
Péter Jankovics et al.
Journal of pharmaceutical and biomedical analysis, 112, 155-168 (2015-01-01)
The analysis of highly polar (often charged) compounds which lack a strong UV absorbing chromophore is really challenging. Despite the numerous analytical methods published, the demand for a simple, robust and cheap technique for their analysis still persists. Here, reversed
Xiangyu Guo et al.
Analytica chimica acta, 1098, 66-74 (2020-01-18)
A streamlined analytical workflow was developed for the analysis of infant drink samples using a miniature mass spectrometry system preceded by solid-phase microextraction (SPME) and extraction nano-electrospray ionization. Potential chemical contaminants in infant drinks (milk, lactic acid bacteria beverage, and
Jenny K Y Wong et al.
Drug testing and analysis, 9(9), 1337-1348 (2017-03-23)
The detection of boldenone, nandrolone, 5(10)-estrene-3β,17α-diol, and 4-estrene-3,17-dione in a urine sample collected from a gelding having been treated with testosterone (500 mg 'Testosterone Suspension 100', single dose, injected intramuscularly) in 2009 led the authors' laboratory to suspect that these 'testicular'
Karim M Abdel-Hay et al.
Forensic science international, 240, 126-136 (2014-05-14)
A series of seven regioisomeric bromodimethoxy benzyl piperazines including the designer benzylpiperazine (4-bromo-2,5-dimethoxybenzylpiperazine) were synthesized and their analytical profiles evaluated using GC-MS and FT-IR. The mass spectra for the seven regioisomeric bromodimethoxy benzyl piperazines are almost identical with only the
J M Matey et al.
Forensic science international, 301, 447-454 (2019-06-04)
This work has shown that it is a valid method for determining ketamine, norketamine and amphetamines derivates in hair samples of forensic cases. This method was validated meeting the criteria of sensitivity and accuracy for detecting repeated consumption of ketamine
H A Kim et al.
Lupus, 27(6), 930-938 (2018-01-09)
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease with various clinical manifestations and serologic markers. In this study, we analyzed nine polyamine (PA) profiles of plasma from patients with SLE and healthy controls (HCs), and the relationship between the
Timmy L S Choi et al.
Journal of chromatography. A, 1566, 51-63 (2018-07-01)
Anabolic and androgenic steroids (AAS) are banned substances in both human and equine sports. They are often administered intramuscularly to horses in esterified forms for the purpose of extending their time of action. The authors' laboratory has previously reported an
Wei Zhang et al.
Food chemistry, 333, 127499-127499 (2020-07-17)
This study was to examine the formation of advanced glycation end-products (AGEs) in black tea during drying process at 90, 120, and 150 °C for 1 h. Nine AGEs including Nɛ-(carboxyethyl)-l-lysine (CEL), Nɛ-(carboxymethyl)-l-lysine (CML), three isomers of methylglyoxal-hydroimidazolones (MG-Hs), three isomers of
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Ma Paz Lorenzo et al.
Journal of pharmaceutical and biomedical analysis, 107, 480-487 (2015-02-14)
Gestational Diabetes Mellitus (GDM) is defined as glucose intolerance with onset or first recognition during pregnancy. It is affecting approximately up to 14% of all pregnancies with an increasing tendency. GDM has been related to relevant short-term and long-term health
Junyu Guo et al.
Environmental pollution (Barking, Essex : 1987), 225, 175-183 (2017-04-04)
Trifluoroacetic acid (TFA) in the atmosphere is produced by degradation of hydrochlorofluorocarbons and hydrofluorocarbons. In recent years, TFA has attracted global attention because of increased environmental concentrations, biological toxicity and accumulation in aqueous environments. This study focused on the mechanisms
Estelle Dubreil et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 34(4), 453-468 (2016-09-03)
An approach is described to validate a fast and simple targeted screening method for antibiotic analysis in meat and aquaculture products by LC-MS/MS. The strategy of validation was applied for a panel of 75 antibiotics belonging to different families, i.e.
Chunyu Yu et al.
Analytical and bioanalytical chemistry, 407(22), 6891-6897 (2015-07-04)
Polyamines and their N-acetylated metabolites are potential biomarkers in the diagnosis and therapeutic evaluation of cancer. Thus, we present here an ultra high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method for the simultaneous determination of 6 free, 3 monoacetylated, and 2
Yolanda Picó et al.
Analytical and bioanalytical chemistry, 407(15), 4247-4259 (2015-01-31)
The accurate determination of perfluoroalkyl substances (PFSAs) in water, sediment, fish, meat, and human milk was achieved by ultrahigh-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC-QqTOF-MS) with an ABSciex Triple TOF®. A group of 21 PFSAs was selected as target to
Nguyen Huu Hoang et al.
Journal of separation science, 39(24), 4712-4722 (2016-10-26)
A high-performance liquid chromatography with electrospray ionization ion trap tandem mass spectrometry method was developed and validated for the robust profiling and characterization of biosynthetic congeners in the 2-deoxy-aminocyclitol istamycin pathway, from the fermentation broth of Streptomyces tenjimariensis ATCC 31603.
Iain M McIntyre et al.
Journal of analytical toxicology, 39(2), 156-159 (2014-11-29)
A 20-year-old man, a college student, became unresponsive in front of his girlfriend. He was known to consume alcohol and take an unknown drug at some point while in attendance at a local music festival earlier in the day/evening. Upon
Yuning Wu et al.
Journal of separation science, 39(8), 1471-1479 (2016-03-01)
This paper describes an improved liquid chromatography method combined with pulsed electrochemical detection for the analysis of etimicin sulfate. In total, 22 impurities could be separated. A TSK-GEL C18 column (250 mm × 4.6 mm i.d., 5 μm) is used
Ju-Yeon Moon et al.
The Journal of steroid biochemistry and molecular biology, 178, 185-192 (2017-12-23)
Sex steroids in clinical endocrinology have been mainly investigated with peripheral blood and urine samples, while there is limited information regarding the local levels within tissues. To improve analytical properties of sex steroids from trace amounts of tissue samples, two-phase
Mary Jo Weiss-Errico et al.
Journal of hazardous materials, 329, 57-65 (2017-01-26)
Perfluorochemicals (PFCs) are contaminants of serious concern because of their toxicological properties, widespread presence in drinking water sources, and incredible stability in the environment. To assess the potential application of α-, β-, and γ-cyclodextrins for PFC remediation, we investigated their
Tae-Hun Kim et al.
The Science of the total environment, 631-632, 1295-1303 (2018-05-08)
Perfluorooctane sulfonate (PFOS) has been found in wastewater treatment plants (WWTPs) and in surface water as a result of domestic uses of textiles, electronics, and surfactants. The detection of PFOS in the aqueous environment has been linked to hazardous biological
Dimitrios Tsikas et al.
Amino acids, 48(2), 593-598 (2015-11-26)
The dicarboxylic tripeptide glutathione (GSH) is the most abundant intracellular thiol. GSH analysis by liquid chromatography is routine. Yet, GSH analysis by gas chromatography is challenged due to thermal instability and lacking volatility. We report a high-yield laboratory method for
Samia Mokh et al.
Food additives & contaminants. Part B, Surveillance, 13(2), 121-129 (2020-03-24)
The treatment of animals with antimicrobial products may lead to the contamination of edible tissues by their residues, which may represent a risk to human health. Therefore, this study aimed to determine the level of antimicrobial residues in food-producing animals
Deepak Bhandari et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1083, 86-92 (2018-03-11)
This work describes a quantitative high-throughput analytical method for the simultaneous measurement of small aliphatic nitrogenous biomarkers, i.e., 1,6-hexamethylenediamine (HDA), isophoronediamine (IPDA), β-methylamino-l-alanine (BMAA), and trimethylamine N-oxide (TMAO), in human urine. Urinary aliphatic diamines, HDA and IPDA, are potential biomarkers
Delphine Cappelle et al.
Forensic science international, 279, 187-191 (2017-09-12)
To quantify alcohol use, objective, specific and sensitive long-term alcohol markers are necessary. Ethyl glucuronide (EtG), a direct metabolite of alcohol, accumulates in keratinous matrices such as hair and nails, and is a specific and sensitive long-term biomarker for the
Cristiana Gambelunghe et al.
Drug testing and analysis, 9(2), 161-167 (2015-12-02)
Even though hair analysis often seems to be the best choice for retrospective monitoring of cocaine intake, differentiating between incorporated cocaine and external contamination is widely debated. In this study we report results obtained in 90 hair samples from addicts.
Panagiota Nikolaou et al.
Journal of pharmaceutical and biomedical analysis, 102, 25-32 (2014-09-23)
A sensitive and accurate gas chromatography-mass spectrometric method was developed and validated for the simultaneous determination of levetiracetam and lamotrigine in whole blood. A solid-phase extraction (SPE) procedure using HF Bond Elut C18 columns followed by derivatization using N-methyl-N-tert-butyldimethylsilyl-trifluoroacetamide (MTBSTFA)
Ilaria Angeli et al.
Journal of pharmaceutical and biomedical analysis, 155, 1-6 (2018-03-31)
THC, CBD, CBN, THC-COOH and 11-OH-THC are the most popular markers of cannabis consumption and abuse. The use of this drug is a serious social problem worldwide. In this study, a method based on gas chromatography-tandem mass spectrometry (GC-MS/MS) operated
Murielle Gaugain et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 32(7), 1105-1115 (2015-04-24)
Chlortetracycline (CTC) is a broad-spectrum antibiotic used in veterinary medicine for pulmonary or digestive infections and having a regulatory maximum residue limit (MRL) necessitating an official analytical control method. The purpose of this study was to clarify the identification of
S Fraselle et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 988, 88-97 (2015-03-11)
Despite decades of creatinine measurement in biological fluids using a large variety of analytical methods, an accurate determination of this compound remains challenging. Especially with the novel trend to assess biomarkers on large sample sets preserved in biobanks, a simple
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