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Oliver G Bosch, Fabrizio Esposito, Dario Dornbierer, Michael M Havranek, Robin von Rotz, Michael Kometer, Philipp Staempfli, Boris B Quednow, Erich Seifritz
According to the triple network hypothesis the brain is equipped with three core neurocognitive networks: the default mode (DMN), the salience (SN), and the central executive (CEN) network. Moreover, the so called dorsal nexus, has met growing interest as it is a hub region connecting these three networks. Assessment of resting-state functional connectivity (rsFC) of these networks enables the elucidation of drug-induced brain alterations. Gamma-hydroxybutyrate (GHB) is a GHB/GABA-B receptor agonist that induces a paradoxical state of mixed stimulation and sedation at moderate doses, which makes it a valuable tool to investigate neural signatures of subjective drug effects...
March 7, 2018: NeuroImage
Kara R Vogel, Garrett R Ainslie, Dana C Walters, Alice McConnell, Sameer C Dhamne, Alexander Rotenberg, Jean-Baptiste Roullet, K Michael Gibson
We present an update to the status of research on succinic semialdehyde dehydrogenase (SSADH) deficiency (SSADHD), a rare disorder of GABA metabolism. This is an unusual disorder featuring the accumulation of both GABA and its neuromodulatory analog, gamma-hydroxybutyric acid (GHB), and recent studies have advanced the potential clinical application of NCS-382, a putative GHB receptor antagonist. Animal studies have provided proof-of-concept that enzyme replacement therapy could represent a long-term therapeutic option...
February 19, 2018: Journal of Inherited Metabolic Disease
Sean P Colyer, Nathan J Lachowsky, Zishan Cui, Julia Zhu, Heather L Armstrong, Matthew Taylor, Joshua Edward, Gbolahan Olarewaju, Robert S Hogg, Eric A Roth, David M Moore
BACKGROUND: Treatment as Prevention (TasP) leading to increased HIV treatment optimism among men who have sex with men (MSM) has been previously associated with behavioural risk compensation, though not yet via crystal methamphetamine (CM) use. Among HIV-negative MSM in a TasP environment, this study aimed to investigate the prevalence of recent CM use over time, examine the association between HIV treatment optimism and CM use and initiation, and identify correlates of recent CM use and predictors of CM initiation...
February 7, 2018: Drug and Alcohol Dependence
Carmela Centola, Arianna Giorgetti, Simona Zaami, Raffaele Giorgetti
BACKGROUND: Gamma-hydroxybutyrate (γ-hydroxybutyrate or GHB) is a physiological compound of mammalians with specific receptors in central nervous system (CNS). Apart from an endogenous production, GHB is also an exogenous molecule found in pharmaceutical as well as in illicit formulations, and it shares the same binding sites and is. Products manufactured and spread in these two fields, whose borders are all but strictly defined and traced, differ for the in-vivo effects and for the potential of abuse...
January 23, 2018: Current Drug Metabolism
Rebecca Howard, Stephanie Fry, Andrew Chan, Brigid Ryan, Yvonne Bonomo
Objective In response to escalating alcohol and other drug (AOD)-related emergency department (ED) presentations, a tertiary Melbourne hospital embedded experienced AOD clinical nurse consultants in the ED on weekends to trial a model for screening, assessment and brief intervention (BI). The aim of the present study was to evaluate the relative contributions of AOD to ED presentations and to pilot a BI model.Methods Using a customised AOD screening tool and a framework for proactive case finding, screened participants were offered a comprehensive AOD assessment and BI in the ED...
January 4, 2018: Australian Health Review: a Publication of the Australian Hospital Association
Paul Calle, Nora Sundahl, Kristof Maudens, Sarah Mr Wille, Diederik Van Sassenbroeck, Koen De Graeve, Stefan Gogaert, Peter De Paepe, Dieter Devriese, Geert Arno, Peter Blanckaert
Introduction Medical problems are frequently encountered during electronic dance music (EDM) events. Problem There are uncertainties about the frequencies and severity of intoxications with different types of recreational drugs: ethanol, "classical" illicit party drugs, and new psychoactive substances (NPS). METHODS: Statistical data on the medical problems encountered during two editions of an indoor electronic dance event with around 30,000 attendants were retrieved from the Belgian Red Cross (Mechelen, Belgium) database...
December 29, 2017: Prehospital and Disaster Medicine
Melanie A Felmlee, Bridget L Morse, Kristin E Follman, Marilyn E Morris
The drug of abuse γ-hydroxybutyric acid (GHB) demonstrates complex toxicokinetics with dose-dependent metabolic and renal clearance. GHB is a substrate of monocarboxylate transporters (MCTs) which are responsible for the saturable renal reabsorption of GHB. MCT expression is observed in many tissues and therefore may impact the tissue distribution of GHB. The objective of the present study was to evaluate the tissue distribution kinetics of GHB at supratherapeutic doses. GHB (400, 600, and 800 mg/kg iv) or GHB 600 mg/kg plus L-lactate (330 mg/kg iv bolus followed by 121 mg/kg/h infusion) was administered to rats and blood and tissues were collected for up to 330 min post-dose...
December 26, 2017: AAPS Journal
Andrew C Naglich, Austin Lin, Sidarth Wakhlu, Bryon H Adinoff
BACKGROUND: Previous reviews have examined the use of theoretically supported combinations of drugs for the treatment of alcohol use disorder. This review seeks to examine the strengths and limitations of current clinical evidence for the use of combined pharmacological interventions intended to treat alcohol use disorder. OBJECTIVES: The objective of this review was to identify combinations of pharmacological treatments for alcohol use disorder, and assess the strength of clinical evidence for these treatments...
December 22, 2017: CNS Drugs
Niels August Willer Strand, Tonny Studsgaard Petersen, Lars Martin Nielsen, Soren Boegevig
Gamma-hydroxybutyrate (GHB) is a drug of abuse, for which physical addiction develops quickly. GHB withdrawal can develop into a life-threatening condition and has previously been treated mainly with benzodiazepines. These have not always proven effective, leading to long hospitalizations in intensive care units. Based on successful Dutch treatment results for using GHB to treat GHB withdrawal symptoms, we propose to implement a similar method in Denmark. The method requires an interdisciplinary effort for which The Danish Poison Information Centre should be consulted for expertise...
December 11, 2017: Ugeskrift for Laeger
Carmen Mannucci, Simona Pichini, Elvira Ventura Spagnolo, Fabrizio Calapai, Sebastiano Gangemi, Michele Navarra, Gioacchino Calapai
BACKGROUND: Gamma-hydroxybutyrate (GHB or sodium oxybate) is both an exogenous and endogenous molecule with neuromodulator properties. In the United States, GHB is an approved drug for the treatment of narcolepsy and narcolepsy with cataplexy in adults. In some European Union countries, sodium oxybate is applied for the treatment of opioid and alcohol withdrawal. OBJECTIVE: The aim of the present review was to describe the state of art of the pre-clinical research and the clinical evidence related to GHB used alone or in combination with other treatments in alcohol withdrawal syndrome and alcohol abstinence maintenance...
December 7, 2017: Current Drug Metabolism
Christopher N Floyd, David M Wood, Paul I Dargan
PURPOSE: Gamma-hydroxybutyrate (GHB) withdrawal is a life-threatening condition that does not always respond to standard treatment with benzodiazepines. Baclofen has potential utility as a pharmacological adjunct and anecdotal reports suggest that it is being used by drug users to self-manage GHB withdrawal symptoms. Here, we investigate current patterns of use and the online availably of baclofen. METHODS: Data triangulation techniques were applied to published scientific literature and publicly accessible Internet resources (grey literature) to assess the use of baclofen in GHB withdrawal...
March 2018: European Journal of Clinical Pharmacology
A Hegazi, S Morton, M Pakianathan, C Cosgrove, R Aroney, E Dore, M Hempling
No abstract text is available yet for this article.
December 2017: International Journal of STD & AIDS
A Tomkins, S Ahmad, L Cannon, S P Higgins, M Kliner, A Kolyva, C Ward, R Vivancos
Recreational drug use (RDU) has been reported to be disproportionately higher in men who have sex with men (MSM) when compared to their heterosexual counterparts. To identify RDU, links to risky sexual practices and infections for MSM attending three sexual health clinics across Manchester, United Kingdom, a retrospective case note review was conducted using a random powered sample of service users attending three sites during 2014. Three hundred and fifty-seven case notes were reviewed across three sites. Eighteen per cent of service users reported any type of RDU...
January 1, 2017: International Journal of STD & AIDS
Lena-Maria Mehling, Xin Wang, Sys-Stybe Johansen, Annika Spottke, Anna Heidbreder, Peter Young, Burkhard Madea, Cornelius Hess
Gamma-hydroxybutyric acid (GHB) can be used as a knock-out drug in drug facilitated crime (DFC). Due to its rapid metabolism and resulting narrow detection window, uncovering GHB use in DFC still constitutes a problem. In this experiment we determined the GHB and GHB-β-O-glucuronide (GHB-Gluc) concentrations in hair samples after single and chronic GHB exposures. Hair samples of three narcoleptic patients therapeutically taking sodium oxybate (GHB-sodium-salt) were collected. Patients 1 (P1) and 2 (P2) took the medication for nine and six years, respectively...
September 2017: Forensic Science International
Cynthia Santos, Ruben E Olmedo, Jeremy Kim
Sedative-hypnotic drugs include gamma-Aminobutyric acid (GABA)ergic agents such as benzodiazepines, barbiturates, gamma-Hydroxybutyric acid [GHB], gamma-Butyrolactone [GBL], baclofen, and ethanol. Chronic use of these substances can cause tolerance, and abrupt cessation or a reduction in the quantity of the drug can precipitate a life-threatening withdrawal syndrome. Benzodiazepines, phenobarbital, propofol, and other GABA agonists or analogues can effectively control symptoms of withdrawal from GABAergic agents...
March 22, 2017: Emergency Medicine Practice
Andrew Tomkins, Roberto Vivancos, Chris Ward, Merav Kliner
Reports of sexualised drug taking (chemsex) have increased significantly in recent years. There is currently limited intelligence on chemsex outside of London. An anonymous survey was promoted via several sources including voluntary services and a sexual health clinic in order to establish the risks associated with chemsex, and how support services can best be tailored to meet the needs of those in Greater Manchester, UK. Quantitative and qualitative data were collected on demographics, drug use, sexual practices and barriers and facilitators to accessing support...
January 1, 2017: International Journal of STD & AIDS
E Reuter, S Tafelski, K Thieme, C West, U Haase, L Beck, M Schäfer, C Spies
No abstract text is available yet for this article.
August 2017: Der Schmerz
Òscar Miró, Miguel Galicia, Paul Dargan, Alison M Dines, Isabelle Giraudon, Fridtjof Heyerdahl, Knut E Hovda, Christopher Yates, David M Wood
OBJECTIVE: To study the profile of European gamma-hydroxybutyrate (GHB) and gammabutyrolactone (GBL) intoxication and analyse the differences in the clinical manifestations produced by intoxication by GHB/GBL alone and in combination with other substances of abuse. METHOD: We prospectively collected data on all the patients attended in the Emergency Departments (ED) of the centres participating in the Euro-DEN network over 12 months (October 2013 to September 2014) with a primary presenting complaint of drug intoxication (excluding ethanol alone) and registered the epidemiological and clinical data and outcomes...
August 5, 2017: Toxicology Letters
Oliver G Bosch, Fabrizio Esposito, Michael M Havranek, Dario Dornbierer, Robin von Rotz, Philipp Staempfli, Boris B Quednow, Erich Seifritz
Gamma-hydroxybutyrate (GHB) is a GHB-/GABA-B receptor agonist inducing a broad spectrum of subjective effects including euphoria, disinhibition, and enhanced vitality. It is used as treatment for neuropsychiatric disorders including narcolepsy and alcohol withdrawal, but is also a drug of abuse. Non-medical users report enhancement of body and emotion awareness during intoxication. However, the neuronal underpinnings of such awareness alterations under GHB are unknown so far. The assessment of regional cerebral blood flow (rCBF) by pharmacological magnetic resonance imaging (phMRI) enables the elucidation of drug-induced functional brain alterations...
October 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
Lena-Maria Mehling, Annika Spottke, Anna Heidbreder, Peter Young, Burkhard Madea, Cornelius Hess, Cornelius Courts
Gamma-hydroxybutyric acid (GHB) acts as an agonist of the GABAB receptor, where GHB induces a depressant effect in the central nervous system. Besides its therapeutic application, GHB is also used as a date rape drug. However, the detection of GHB ingestion proves to be difficult due to its narrow detection window. The aim of this pilot study was to assess differential gene expressions after GHB intake to identify potential biomarkers for the detection of GHB intake. To this aim, alteration in gene expression of ALDH5A1, AKR7A2, EREG, and PEA15 was investigated via quantitative PCR (qPCR)...
May 22, 2017: International Journal of Legal Medicine
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