Results 121 to 130 of about 72,799 (306)

Metformin in the Horse: Pharmacokinetics and Detection Times Using Monte Carlo Simulations

open access: yesDrug Testing and Analysis, EarlyView.
In recent years, the detection of metformin in blood and urine samples collected from racehorses has raised concern among regulators. This study describes blood and urine concentrations and the pharmacokinetics of metformin following IV and oral administration to horses. Data presented here can be used to establish screening limits and withdrawal times
Megan E. Jacobs   +5 more
wiley   +1 more source

Surveillance of Phenibut in Wastewater During a Brazilian Carnival

open access: yesDrug Testing and Analysis, EarlyView.
This study reports the first detection of phenibut in Brazilian wastewater. Phenibut, a substance readily sold online to improve concentration, reaches wastewater treatment plants (WWTPs) after consumption by the population. Samples from WWTPs in the cities of Recife and Olinda in Northeastern Brazil were collected during the world's largest Carnival ...
Bruna R. de S. Gomes   +5 more
wiley   +1 more source

Rapid Identification of New Psychoactive Substances in Letters by LA‐APCI‐MS

open access: yesDrug Testing and Analysis, EarlyView.
Laser ablation coupled to molecular mass spectrometry utilizing a modified atmospheric pressure chemical ionization source was used for the detection of synthetic cannabinoid receptor agonists in infused prison mail samples. ABSTRACT New psychoactive substances (NPS), especially synthetic cannabinoid receptor agonists (SCRA), are increasingly smuggled ...
Mark Wesner   +4 more
wiley   +1 more source

Further Insights Into the Metabolism of LGD‐4033 in Human Urine. Part 2. A New Minor Metabolite With Antagonistic Activity on the Androgen Receptor Can Indicate Recent Substance Intake

open access: yesDrug Testing and Analysis, EarlyView.
A novel early excreted minor metabolite of LGD‐4033 was detected and coded as M8. Its presence was evaluated as an indicator of recent substance intake versus end‐tail findings. Additionally, the agonist/antagonist properties of M8 and other selected LGD‐4033 metabolites on the androgen receptor (AR) were studied using in silico molecular docking and ...
Yiannis S. Angelis   +10 more
wiley   +1 more source

Simulation of the Metabolism of New Psychoactive Substances Using Electrochemistry‐Mass Spectrometry: Introducing an Innovative Software Tool for Rapid Data Evaluation

open access: yesDrug Testing and Analysis, EarlyView.
A novel software tool for the rapid and efficient simulation of the metabolism of new psychoactive substances was developed and applied to mimic the metabolism of the synthetic cannabinoid receptor agonist MDMB‐4en‐PINACA. ABSTRACT An innovative software tool for the rapid and efficient simulation of the metabolism of new psychoactive substances (NPS ...
Mark Wesner   +3 more
wiley   +1 more source

Improvement of EPO Transgene Detection From Polymeric Dried Blood Spots for Antidoping Application

open access: yesDrug Testing and Analysis, EarlyView.
This article presents an optimized protocol for gene doping detection. Starting from one spot DBS (20 μL), concentrated DNA was obtained and real‐time PCR parameters were adjusted for increased detection. Robust detection of 5000 copies/mL of transgene was validated for polymeric device TASSO M‐20.
Alexandre Marchand   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy