Tobacco addiction is the primary preventable factor contributing to global mortality, and nicotine is one of the substances with the greatest potential for addiction. With a strong affinity for the α4β2 subtype receptor, cytisine (CYT) functions as a partial agonist of the acetylcholine nicotinic cholinergic receptor. It counteracts the effects of nicotine without causing any withdrawal symptoms.
View Article and Find Full Text PDFBenzodiazepine (BDZ) addiction is a widespread and multifaceted phenomenon. For many patients, especially females, the concomitant use of other drugs also increases their risk of QTc prolongation, possibly leading to complications such as seizures and even sudden death. However, the relationship between BDZ use and QTc prolongation is currently unclear.
View Article and Find Full Text PDFOpioid use disorder (OUD) is a serious medical condition with vast social, health and economic impact. Individuals with OUD are prescribed opioid agonist therapies, such as methadone, levomethadone, buprenorphine or naloxone/buprenorphine, to reduce the risks associated with illegal substance abuse, eventually leading to opioid use abstinence. The OUD population has peculiar frailties, mainly related to the psychiatric sphere, which may jeopardize their therapeutic course.
View Article and Find Full Text PDFMethadone is a chiral synthetic opioid primarily used to treat heroin and prescription-opioid addiction: the (R)-enantiomer (Levomethadone) activates the µ-opioid receptor more potently than the (S)-enantiomer, which is a more potent blocker of the hERG potassium channels, resulting in QTc prolongation. The purpose of this retrospective study was to assess the effect of methadone on the QTc interval and to investigate the benefits of Levomethadone. The electrocardiograms of 165 patients taking methadone at various dosages and for different periods of time were examined: the QTc value was manually measured and then adjusted using Bazett's formula.
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