Results 181 to 190 of about 105,942 (260)

Comparison of Liquid Chromatography- and Nano-Electrospray Ionization-Mass Spectrometry Approaches for Single-Cell Metabolomics. [PDF]

Anal Chem
Cook A, Davison C, Pascoe J, Atwal H, Mayson G, Ali A, Beste DJ, Bailey M.   +7 more
europepmc   +1 more source

Exploring Cerumen as an Alternative Matrix for Drug Detection and Quantification: Method Development and Application in Clinical Samples

Drug Testing and Analysis, EarlyView.
An LC–MS/MS method was developed for the detection of 33 psychoactive medications in cerumen (earwax) and applied to the samples of 60 psychiatric inpatient volunteers. The findings highlighted the utility of cerumen as an innovative biospecimen in clinical toxicological analysis.
Dimitrios Phaedon Kevrekidis, Helen G. Gika, Georgios Panagiotoglou, Eleni Parlapani, Pavlos Pavlidis, Nikolaos Raikos   +5 more
wiley   +1 more source

Intraoperative Mass Spectrometry in Oncology: Technologies, Clinical Applications, and Challenges. [PDF]

Molecules
Onulov R, Georgescu M, Flangea C, Chirita-Emandi A, Serb AF.   +4 more
europepmc   +1 more source

Investigations Into the Metabolism and Elimination of Flmodafinil and Fladrafinil for Sports Drug Testing Purposes

Drug Testing and Analysis, EarlyView.
This article investigates the metabolism and elimination of flmodafinil and fladrafinil, two fluorinated analogs of modafinil and adrafinil listed as S6 stimulants by the World Anti‐Doping Agency. After single‐dose administration to six volunteers, the compounds and their main metabolites were studied in urine and blood.
O. Krug, S. Guddat, C. Görgens, K. Walpurgis, F. Toma, A. Thomas, M. Thevis   +6 more
wiley   +1 more source

Myocardial testosterone glucuronide and disease phenotypes in hypertrophic cardiomyopathy. [PDF]

ESC Heart Fail
Ikoma T, Akita K, Ohno K, Satoh T, Sato R, Islam A, Islam MM, Omagari R, Komatsu K, Unno K, Iguchi K, Suwa K, Sakamoto A, Kahyo T, Takamisawa I, Takayama M, Iwakura T, Takanashi S, Saitsu H, Setou M, Maekawa Y.   +20 more
europepmc   +1 more source

In Vitro Metabolism of Δ8‐, Δ9‐, and Δ10‐THC in Human Hepatocytes: Distinct Δ10‐THC Biotransformation and Implications for Drug Testing

Drug Testing and Analysis, EarlyView.
Δ8‐THC and Δ9‐THC showed comparable metabolic profiles. In contrast, Δ10‐THC underwent extensive glucuronidation and hydroxylation, with only minor formation of a carboxy metabolite, indicating a markedly different metabolic pathway. These differences may increase the risk of misidentification and misinterpretation in cannabis drug testing.
Robert Kronstrand, Henrik Green, Markus Loh, Fabian Rüttimann, Manuela Carla Monti   +4 more
wiley   +1 more source

Label-Free High-Throughput Screening of CYP3A4 Inhibitors Using Acoustic Ejection Mass Spectrometry. [PDF]

Anal Chem
Rimmer MA, Wang J, Ranathunge TA, Shi Z, Li Y, Lee D, Chai SC, Lin W, Twarog NR, Ansari AZ, Shelat AA, Young BM, Chen T, Yang L.   +13 more
europepmc   +1 more source

Investigations Into the Metabolism and Elimination of Tesofensine in Human Urine

Drug Testing and Analysis, EarlyView.
This study investigated tesofensine metabolism and urinary elimination after a single 483 μg intake via a dietary supplement. In six volunteers, urine was collected up to 659 h. LC‐HRMS/MS identified four tentative metabolites; maximum urinary concentrations reached 4 ng/mL within 4–48 h.
O. Krug, A. Thomas, M. Thevis
wiley   +1 more source

Untargeted metabolomic dataset of leaves from twenty-four accessions of wild and cultivated tomato plants. [PDF]

Data Brief
Exonam Amegan K, Magot F, Kergunteuil A, Caromel B, Lavoir AV, Larbat R.   +5 more
europepmc   +1 more source

Detection of Testosterone Esters in Urine: Evidence of Trace‐Level Detectability in Doping Control Samples

Drug Testing and Analysis, EarlyView.
An ultrasensitive LC‐MS/MS method for detecting testosterone esters (T‐esters) in urine at sub–pg/mL levels is presented. This approach, employing Girard P derivatization, provides the first evidence of T‐esters' trace‐level detectability in human urine.
Daniel Pecher, Guro Forsdahl, Biljana Stojanovic, Günter Gmeiner   +3 more
wiley   +1 more source