Skip to content

Robbert Jan Verkes

3 papers in the library · 76 citations · publishing 2011-2024

Papers

Sort Most recent Most cited

The pharmacokinetics and pharmacodynamics of ibogaine in opioid use disorder patients.

Journal of psychopharmacology (Oxford, England) May 1, 2024 Thomas Knuijver, Rob Ter Heine, Arnt Schellekens et al. 15 citations

Ibogaine is a hallucinogenic drug that may be used to treat opioid use disorder (OUD). The relationships between pharmacokinetics (PKs) of ibogaine and its metabolites and their clinical effects on side effects and opioid withdrawal severity are unknown. We aimed to study these relationships in patients with OUD undergoing detoxification supported by ibogaine. The study was performed in 14...

Cannabis and cocaine decrease cognitive impulse control and functional corticostriatal connectivity in drug users with low activity DBH genotypes

Brain Imaging and Behavior December 14, 2015 Johannes G. Ramaekers, J. H. van Wel, Desirée Spronk et al. 61 citations

The dopamine β-hydroxylase (DβH) enzyme transforms dopamine into noradrenaline. We hypothesized that individuals with low activity DBH genotypes (rs1611115 CT/TT) are more sensitive to the influence of cannabis and cocaine on cognitive impulse control and functional connectivity in the limbic 'reward' circuit because they experience a drug induced hyperdopaminergic state compared to individuals...

Acute effects of MDMA (3,4-methylenedioxymethamphetamine) on EEG oscillations: alone and in combination with ethanol or THC (delta-9-tetrahydrocannabinol).

Psychopharmacology February 2011 Marieke M Lansbergen, Glenn J H Dumont, Joop M A Van Gerven et al.

Typical users of 3,4-methylenedioxymethamphetamine (MDMA or "ecstasy") are polydrug users, combining MDMA with alcohol or cannabis [most active compound: delta-9-tetrahydrocannabinol (THC)]. The aim of the present study was to investigate whether co-administration of alcohol or THC with MDMA differentially affects ongoing electroencephalogram (EEG) oscillations compared to the administration of...