the efficacy of neurofeedback treatment on psychopathological symptoms in addicted male patients was assessed. participants were 20 opiate dependent patients who was seeking medication treatment. after completing the symptom chekclist-90-revised (derogatis, 1975), participants were randomly assigned to an experimental or a witness group. the experimental group received 30 sessions of neurofeedb...

Repeated use of opiate analgesic drugs such as morphine for the relief of chronic pain may result in the development of opiate tolerance and dependence, leading to a narrowing of the drug's therapeutic index and increased side effects. Previous preclinical work has shown that interruption of a signaling cascade involving the N-methyl-D-aspartate receptor and NO prevents morphine tolerance. In t...

BACKGROUND Intravenous drug misuse, principally heroin, occurs primarily in the Greater Dublin area. Methadone maintenance treatment has been an important part of the response to opiate misuse in Dublin since 1992. AIMS To determine the number of opiate-related deaths in Dublin City and County during 1999, to establish the number of methadone-related deaths and determine the proportion of dea...

UNLABELLED Protracted opiate withdrawal is accompanied by altered responsiveness of midbrain dopaminergic (DA) neurons, including a loss of DA cell response to morphine, and by behavioral alterations, including affective disorders. GABAergic neurons in the tail of the ventral tegmental area (tVTA), also called the rostromedial tegmental nucleus, are important for behavioral responses to opiates...

The mouse neuroblastoma-rat glioma hybrid cell line NG108-15 was used to study the acute and chronic interaction of ethanol with intact neural cells. In the short term, ethanol inhibited opiate receptor binding, but after long-term exposure the cells exhibited an apparent adaptive increase in the number of opiate binding sites; this was reversible when ethanol was withdrawn. High concentrations...

It has previously been shown that opiates produce selective abolition of aversively motivated classically conditioned responses in the rabbit. The experiments reported here show that these effects are mediated by specific activation of opiate receptors within the central nervous system in that this central activation is both necessary and sufficient to produce opiate-induced abolition of condit...

BACKGROUND The prevalence of female alcohol and substance abusers has markedly increased. The main objective of this research was to explore personality profiles among females who had alcohol and opiate dependence. AIM The aim of the study is to analyse if there is differences in personality profiles of females addicted to alcohol and opiates. We hypothesized that there might be significant d...

Withdrawal is a potent motivator of drug-seeking behavior in human opiate addicts. Paradoxically, opiate withdrawal reduces dopamine release and suppresses behavioral responding in several animal models of addiction. These findings pose critical questions about how a withdrawal state that depresses dopaminergic and behavioral functioning contributes to drug seeking. This study addressed this is...

Cannabinoid, dopamine (DA), and opiate receptor pathways play integrative roles in emotional learning, associative memory, and sensory perception. Modulation of cannabinoid CB1 receptor transmission within the medial prefrontal cortex (mPFC) regulates the emotional valence of both rewarding and aversive experiences. Furthermore, CB1 receptor substrates functionally interact with opiate-related ...

[(3)H]Naloxone, a potent opiate antagonist, binds stereospecifically to opiate-receptor sites in rat-brain tissue. The binding is time, temperature, and pH dependent and saturable with respect to [(3)H]naloxone and tissue concentration. The [(3)H]naloxone-receptor complex formation is bimolecular with a dissociation constant of 20 nM. 15 Opiate agonists and antagonists compete for the same rece...