Comparison of urinary excretion characteristics of ethanol and ethyl glucuronide.
- H. Dahl, N. Stephanson, O. Beck, A. Helander
- MedicineJournal of Analytical Toxicology
- 1 May 2002
It was demonstrated that EtG remains detectable in the urine for many hours after the ethanol itself has been eliminated, and it was possible to lower the concentration of EtG by drinking large amounts of water prior to voiding, whereas this strategy did not influence the EtG/creatinine ratio or the concentrate of ethanol.
Ethyl sulfate: a metabolite of ethanol in humans and a potential biomarker of acute alcohol intake.
- A. Helander, O. Beck
- MedicineJournal of Analytical Toxicology
- 1 July 2005
The present results confirm that sulfate conjugation is a normal but minor metabolic pathway for ethanol in humans, and EtS a common constituent in the urine after alcohol intake, and indicated that the concurrent determination of EtS and EtG will improve sensitivity, when being used as biomarkers of recent drinking.
Naltrexone for the treatment of amphetamine dependence: a randomized, placebo-controlled trial.
- N. Jayaram-Lindström, A. Hammarberg, O. Beck, J. Franck
- Psychology, MedicineAmerican Journal of Psychiatry
- 1 November 2008
The main outcome measure was abstinence from amphetamine use, as indicated by the total number of negative amphetamine urine samples during 12 weeks of treatment, and survival analyses showed that the treatment groups differed in rate of continuous abstinence, in both the intention-to-treat and completer samples, in favor of naltrexone treatment.
Phencyclidine analog use in Sweden—intoxication cases involving 3-MeO-PCP and 4-MeO-PCP from the STRIDA project
- M. Bäckberg, O. Beck, A. Helander
- Medicine, PsychologyClinical toxicology
- 21 August 2015
Clinical and bioanalytical data from analytically confirmed non-fatal intoxications associated with 3- and/or 4-MeO-PCP within the STRIDA project constitute an important basis for the assessment of NPS hazard and availability.
Intoxications by the dissociative new psychoactive substances diphenidine and methoxphenidine
- A. Helander, O. Beck, M. Bäckberg
- MedicineClinical toxicology
- 8 May 2015
The adverse effects noted in analytically confirmed cases of NPS intoxication involving diphenidine or MXP were similar to those reported for other dissociative substances such as ketamine and methoxetamine, but the high proportion of polysubstance use might have played a role in the intoxication and clinical features in some cases.
Methylphenidate for attention deficit hyperactivity disorder and drug relapse in criminal offenders with substance dependence: a 24-week randomized placebo-controlled trial
- M. Konstenius, N. Jayaram-Lindström, J. Guterstam, O. Beck, B. Philips, J. Franck
- Psychology, MedicineAddiction
- 1 December 2013
Methylphenidate treatment reduces attention deficithyperactivity disorder symptoms and the risk for relapse to substance use in criminal offenders with attention deficit hyperactivity disorder and substance dependence.
Intoxications involving the fentanyl analogs acetylfentanyl, 4-methoxybutyrfentanyl and furanylfentanyl: results from the Swedish STRIDA project
- A. Helander, M. Bäckberg, O. Beck
- Medicine, ChemistryClinical toxicology
- 5 February 2016
Potentially life-threatening opioid toxicity was seen in acute intoxications involving acetylfentanyl, 4-methoxybutyrfentanyl, and furanylfentanyl between April and November 2015.
Intoxications involving acrylfentanyl and other novel designer fentanyls – results from the Swedish STRIDA project
- A. Helander, M. Bäckberg, P. Signell, O. Beck
- Medicine, ChemistryClinical toxicology
- 28 March 2017
Potentially life-threatening opioid toxicity was seen in 11 acute intoxications involving the fentanyl analogs acrylfentanyl, 4Cl-i BF, 4F-iBF, and THF-F, which are available through open Internet trading.
Evaluation of a new immunoassay for urinary ethyl glucuronide testing.
- M. Böttcher, O. Beck, A. Helander
- Medicine, ChemistryAlcohol and Alcoholism
- 8 October 2007
A new enzyme immunoassay for quantification of urinary EtG indicated a high level of accuracy and selectivity and a threshold of 0.5 mg/L (2.2 mumol/L) is proposed to obtain a high sensitivity but avoid positive results due to unintentional ethanol exposure.
Characteristics of analytically confirmed 3-MMC-related intoxications from the Swedish STRIDA project
- M. Bäckberg, Erik Lindeman, O. Beck, A. Helander
- MedicineClinical toxicology
- 2 January 2015
The majority of patients with analytically confirmed 3-MMC exposure had sympathomimetic features similar to those associated with mephedrone intoxication, however, the high incidence of co-exposure to other drugs makes the clinical interpretation difficult.
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