Results 91 to 100 of about 6,199 (251)

HIV PrEP use and unmet need among gay, bisexual and other men who have sex with men in London: An analysis of community cross‐sectional surveys in England 2019–2022

open access: yesHIV Medicine, Volume 27, Issue 3, Page 420-432, March 2026.
Abstract Objectives In England, HIV pre‐exposure prophylaxis (PrEP) was routinely commissioned at sexual health services from 2020. We compared PrEP use and unmet need among gay, bisexual and other men who have sex with men (GBMSM) in London before (2019) and during (2022) routinely commissioned PrEP and the factors associated with its use.
Flavien Coukan   +7 more
wiley   +1 more source

New green DI-SPME/CE-MS method for quantitative analysis of selected illicit drugs in human whole blood

open access: yesGreen Analytical Chemistry, 2023
The purpose of the research was to develop a new method that would allow the determination of selected drugs (mephedrone, MDMA, and cocaine and its metabolites: benzoylecgonine, norcocaine, and cocaethylene) in whole blood, while meeting not only the ...
Alicja Chromiec   +2 more
doaj   +1 more source

The effects and toxicity of cathinones from the users' perspectives: A qualitative study. [PDF]

open access: yes, 2017
OBJECTIVE: The objective of this study is to explore the users' perspectives regarding the effects and toxicity of cathinones. METHODS: A systematic search of Internet discussion forums yielded 303 threads relevant to the research objectives. The threads
Assi, Sulaf   +3 more
core   +2 more sources

Rapid Detection and Quantification of Novel Psychoactive Substances (NPS) Using Raman Spectroscopy and Surface-Enhanced Raman Scattering

open access: yesFrontiers in Chemistry, 2019
With more than a million seizures of illegal drugs reported annually across Europe, the variety of psychoactive compounds available is vast and ever-growing.
Howbeer Muhamadali   +12 more
doaj   +1 more source

Application of Wastewater‐Based Epidemiology in Japan to Estimate the Prevalence of Substance Use Including Methamphetamine and Ephedrine

open access: yesChemistry – An Asian Journal, Volume 21, Issue 3, 12 February 2026.
Methamphetamine was the only illicit drug consistently detected (consumption at 17.0 ± 5.1 mg/day/1000people). High levels of its precursors, ephedrine, and pseudoephedrine were likely from legal medicines, although there is a high risk of diversion.
Quyen T. T. Do   +4 more
wiley   +1 more source

Chemsex and Mental Health of Men Who Have Sex With Men in Germany

open access: yesFrontiers in Psychiatry, 2020
Background: Chemsex is defined as using certain substances immediately before or during sexual activities to facilitate, prolong and/or intensify sexual experience, mainly by some communities of men who have sex with men (MSM).
Annette Bohn   +14 more
doaj   +1 more source

Synthetic cannabinoid use in a case series of patients with psychosis presenting to acute psychiatric settings : Clinical presentation and management issues [PDF]

open access: yes, 2018
Background: Novel Psychoactive Substances (NPS) are a heterogeneous class of synthetic molecules including synthetic cannabinoid receptor agonists (SCRAs). Psychosis is associated with SCRAs use.
Bonaccorso, Stefania   +9 more
core   +3 more sources

Recent Contributions of Organic Synthesis to Forensic Science

open access: yesChemPlusChem, Volume 91, Issue 2, February 2026.
Forensic science is a multidisciplinary field that plays a vital role in providing scientific evidence for criminal investigations. This review highlights advances and opportunities at the interface between organic synthesis and forensic science, with applications in drug identification, forensic toxicology, and latent fingerprint detection and ...
Gustavo dos Santos Martins   +3 more
wiley   +1 more source

Optimization of Parallel Artificial Liquid Membrane Extraction for the Determination of Over 50 Psychoactive Substances in Oral Fluid Through UHPLC–MS/MS

open access: yesDrug Testing and Analysis, Volume 17, Issue 10, Page 1877-1895, October 2025.
This study is related to the development of a microextraction method for the determination of 56 psychoactive substances in oral fluid. Sample clean‐up is obtained by parallel artificial liquid membrane extraction and analyzed by liquid chromatography–tandem mass spectrometry.
Martina Croce   +6 more
wiley   +1 more source

Extended Stability Evaluation of Selected Cathinones

open access: yesFrontiers in Chemistry, 2020
Understanding the stability of drugs in a forensic toxicology setting is critical for the evaluation of drug concentrations. Synthetic cathinones are new psychoactive substances structurally derived from cathinone, the psychoactive component of Catha ...
Heather L. Ciallella   +3 more
doaj   +1 more source

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