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Journal of Applied Behavior Analysis Jul 2020Polydrug use is a common problem among patients in opioid-substitution treatment. Polydrug use has been reduced by administering abstinence-reinforcement contingencies...
Polydrug use is a common problem among patients in opioid-substitution treatment. Polydrug use has been reduced by administering abstinence-reinforcement contingencies in a sequence, such that a single drug is targeted until abstinence is achieved, and then an additional drug is targeted. The present study examined effects of administering abstinence-reinforcement contingencies sequentially based on time rather than on achieved abstinence. Participants accessed paid work (about $10/hr maximum) in the Therapeutic Workplace by providing urine samples 3 times per week. The urine samples were tested for opiates and cocaine. During an induction period, participants earned maximum pay independent of drug abstinence. Then, maximum pay depended upon urine samples that were negative for opiates. Two weeks later, maximum pay depended upon urine samples that were negative for both opiates and cocaine. Opiate and cocaine abstinence increased following administration of the respective contingencies. The time-based administration of abstinence reinforcement increased opiate and cocaine abstinence.
Topics: Cocaine; Cocaine-Related Disorders; Female; Humans; Male; Opiate Alkaloids; Opioid-Related Disorders; Reinforcement, Psychology; Time Factors
PubMed: 32249414
DOI: 10.1002/jaba.702 -
Disease-a-month : DM Sep 2016
Review
Topics: Analgesics, Opioid; Chronic Pain; Humans; Opiate Alkaloids; Opioid-Related Disorders
PubMed: 27569588
DOI: 10.1016/j.disamonth.2016.05.013 -
Medecine Sciences : M/S 2016Since the work of Johnson and North, it is known that opiates increase the activity of dopaminergic neurons by a GABA neuron-mediated desinhibition. This model should... (Review)
Review
Since the work of Johnson and North, it is known that opiates increase the activity of dopaminergic neurons by a GABA neuron-mediated desinhibition. This model should however be updated based on recent advances. Thus, the neuroanatomical location of the GABA neurons responsible for this desinhibition has been recently detailed: they belong to a brain structure in continuity with the posterior part of the ventral tegmental area and discovered this past decade. Other data also highlighted the critical role played by glutamatergic transmission in the opioid regulation of dopaminergic neuron activity. During protracted opiate withdrawal, the inhibitory/excitatory balance exerted on dopaminergic neurons is altered. These results are now leading to propose an original hypothesis for explaining the impact of protracted opiate withdrawal on mood.
Topics: Animals; Brain; Dopaminergic Neurons; GABAergic Neurons; Humans; Opiate Alkaloids; Synaptic Transmission; Ventral Tegmental Area
PubMed: 27406773
DOI: 10.1051/medsci/20163206026 -
Clinical Gastroenterology and... Oct 2018
Topics: Analgesics, Opioid; England; Humans; Inflammatory Bowel Diseases; Opiate Alkaloids
PubMed: 29909124
DOI: 10.1016/j.cgh.2018.06.006 -
Addiction Biology Jul 2016Neuropeptide Y (NPY), which is widely expressed in the central nervous system is involved in several neuropathologies including addiction. Here we comprehensively and... (Review)
Review
Neuropeptide Y (NPY), which is widely expressed in the central nervous system is involved in several neuropathologies including addiction. Here we comprehensively and systematically review alterations on the central NPY system induced by several drugs. We report on the effects of psychostimulants [cocaine, amphetamine, methamphetamine, 3,4-methylenedioxymethamphetamine (MDMA) and nicotine], ethanol, and opioids on NPY protein levels and expression of different NPY receptors. Overall, expression and function of NPY and its receptors are changed under conditions of drug exposure, thus affecting several physiologic behaviors, such as feeding, stress and anxiety. Drugs of abuse differentially affect the components of the NPY system. For example methamphetamine and nicotine lead to a consistent increase in NPY mRNA and protein levels in different brain sites whereas ethanol and opioids decrease NPY mRNA and protein expression. Drug-induced alterations on the different NPY receptors show more complex regulation pattern. Manipulation of the NPY system can have opposing effects on reinforcing and addictive properties of drugs of abuse. NPY can produce pro-addictive effects (nicotine and heroin), but can also exert inhibitory effects on addictive behavior (AMPH, ethanol). Furthermore, NPY can act as a neuroprotective agent in chronically methamphetamine and MDMA-treated rodents. In conclusion, manipulation of the NPY system seems to be a potential target to counteract neural alterations, addiction-related behaviors and cognitive deficits induced by these drugs.
Topics: Amphetamines; Animals; Brain; Cocaine; Disease Models, Animal; Ethanol; Mice; Neuropeptide Y; Nicotine; Opiate Alkaloids; Rats; Receptors, Neuropeptide Y
PubMed: 25904345
DOI: 10.1111/adb.12250 -
Diabetes & Metabolic Syndrome Jan 2022Obesity and drug use are two major global issues today. This study aimed to evaluate the relationship between alcohol and tobacco use with general and central obesity.
BACKGROUND AND AIMS
Obesity and drug use are two major global issues today. This study aimed to evaluate the relationship between alcohol and tobacco use with general and central obesity.
METHODS
The data of the longitudinal population-based study were collected from the basis of the Fasa Cohort Study (FACS). Participants were 10141 people with 35-70 years old. Data were analyzed by SPSS 20 software. Binary logistic regression (BLR) was used for modelling. A significance level (α) less than 0.05% was considered for hypothesis testing.
RESULTS
Of the total participants (N = 10104), 54.8% (n = 5539) were women. The prevalence of central obesity in terms of waist circumference (WC), waist to hip ratio (WHR), and waist to height ratio (WHtR) were calculated 48.20% (N = 4871), 79.50% (N = 8032), and 83.30% (N = 8314). The Odds Ratio (OR) adjusted of Abnormal body mass index (BMI) for Opium and chronic smoking were 0.54 (CI: 0.47-0.63) and 0.47 (CI:0.40-0.56). OR adjusted Abnormal WC for opium and chronic smoking were calculated 0.65 (CI: 0.53-0.80) and 0.57 (CI:0.46-0.72), respectively. Three variables of opium (OR = 0.54, CI: 0.46-0.64), total opiate drugs (OR = 1.46, CI:1.16-1.83) and chronic smoking (OR = 0.58, CI: 0.48-0.70) remained in the modeling for Abnormal WHR. Which were statistically significant.
CONCLUSION
Significant and inverse relationships were found between obesity and opium, total opiate drugs, and chronic smoking.
Topics: Adult; Aged; Body Mass Index; Cohort Studies; Cross-Sectional Studies; Female; Humans; Middle Aged; Obesity; Obesity, Abdominal; Opiate Alkaloids; Opium; Prevalence; Risk Factors; Smoking; Waist Circumference; Waist-Hip Ratio
PubMed: 34920194
DOI: 10.1016/j.dsx.2021.102357 -
Journal of Forensic and Legal Medicine Feb 2019Opium poppy has important medical, socioeconomic, forensic and political implications. More than 80 benzylisoquinoline alkaloids have been described, many of them with... (Review)
Review
Opium poppy has important medical, socioeconomic, forensic and political implications. More than 80 benzylisoquinoline alkaloids have been described, many of them with relevant therapeutic properties such as morphine, codeine, papaverine and noscapine. Heroin, a semi-synthetic drug produced from morphine is a worldwide serious cause of morbidity and mortality. Heroin dependence is complex phenomenon with environmental and genetic influence, and several biomarkers of exposure have been proposed. This work aims to review the metabolism and metabolomics of opiates with particular interest on their relevance as potential clinical and forensic antemortem and postmortem biomarkers. It is known that the heroin is mainly a prodrug that is rapidly deacetylated in blood to its active metabolite, 6-acetylmorphine, which is then subsequently slowly deacetylated to morphine. Therefore, 6-acetylmorphine has been used as the main target metabolite to prove heroin abuse in clinical, but mostly in forensic routine. Nevertheless, its applicability is limited due to the reduced detection window. Therefore, morphine (and its metabolites morphine-3-glucuronide and morphine-6-glucuronide), codeine, codeine-6-glucuronide, 6-acetylcodeine, noscapine (and its metabolites meconine, desmethylmeconine, and cotarnine), papaverine (and its metabolites 6-desmethylpapaverine, hydroxypapaverine, dihydroxypapaverine, 6-desmethylpapaverine-glucuronide) and thebaine (and acetylthebaol and the non-acetylated analog thebaol) have been additionally recommended to obtain the most reliable results possible. More recently, the identification by metabolomics analysis of several endogenous compounds offered an alternative approach of significant importance to uncover toxic effects. Profound alterations in the neurotransmitters levels and energy and amino acid metabolism have been reported with l-tryptophan, 5-hydroxytryptamine and 5-hydroxyindoleacetate being suggested as potential non-specific biomarkers of long-term heroin addiction. These endogenous metabolic profiles and exogenous components that together comprise the exposome will certainly help to uncover metabolic disturbances and patterns that may be associate to addiction with relevant clinical and forensic implications.
Topics: Analgesics, Opioid; Biomarkers; Codeine; Forensic Toxicology; Heroin; Humans; Metabolomics; Molecular Structure; Morphine; Opiate Alkaloids; Opioid-Related Disorders
PubMed: 30621882
DOI: 10.1016/j.jflm.2018.12.005 -
Laboratory Medicine Nov 2017Urine drug testing is an essential component in the evaluation and management of individuals with opioid use disorders, including those on buprenorphine or methadone... (Review)
Review
Urine drug testing is an essential component in the evaluation and management of individuals with opioid use disorders, including those on buprenorphine or methadone maintenance therapies. Notwithstanding its centrality in adherence monitoring, studies have shown that clinicians have important knowledge deficiencies regarding the ordering and interpretation of drug tests. In this review, we discuss the scope and frequency of testing, the advantages and disadvantages of immunoassay- (presumptive) and liquid chromatograph-mass spectrometry- (definitive) based techniques, indications for definitive testing, medical necessity, and other considerations. Optimal use of urine drug testing depends on collaboration between clinicians and laboratory scientists.
Topics: Drug Monitoring; Humans; Immunoassay; Opiate Alkaloids; Opiate Substitution Treatment; Opioid-Related Disorders; Substance Abuse Detection
PubMed: 29096016
DOI: 10.1093/labmed/lmx054 -
Journal of Psychopharmacology (Oxford,... Sep 2022The benzodiazepine drug alprazolam, a fast-acting tranquiliser, cannot be prescribed on the National Health Service in the United Kingdom. Illicit alprazolam supply and...
BACKGROUND
The benzodiazepine drug alprazolam, a fast-acting tranquiliser, cannot be prescribed on the National Health Service in the United Kingdom. Illicit alprazolam supply and consumption have increased. Concern about increasing numbers of alprazolam-related fatalities started circulating in 2018. However, statistics on this issue are very limited. This study examined patterns in such mortality in Scotland.
METHODS
Statistics on deaths where alprazolam was mentioned in the 'cause of death' were obtained from official mortality registers. Anonymised Scottish case-level data were obtained. Data were examined in respect of the characteristics of decedents and deaths using descriptive statistics.
RESULTS
Scotland registered 370 deaths in 2004-2020; 366 of these occurred in 2015-2020: most involved males (77.1%); mean age 39.0 (SD 12.6) years. The principal underlying cause of death was accidental poisoning: opiates/opioids (77.9%); sedatives/hypnotics (15.0%). Two deaths involved alprazolam alone. Main drug groups implicated: opiates/opioids (94.8%), 'other benzodiazepines' (67.2%), gabapentinoids (42.9%), stimulants (30.1%), antidepressants (15.0%). Two-thirds (64.2%) involved combinations of central nervous system (CNS) depressants.
DISCUSSION
Alprazolam-related deaths are likely due to an increasing illicit supply. The fall in deaths in 2019-2020 is partially due to increased use of designer benzodiazepines. Treatment for alprazolam dependence is growing. Clinicians need to be aware of continuing recreational alprazolam use. When such consumption occurs with CNS depressants, overdose and death risks increase.
CONCLUSIONS
More awareness of alprazolam contributing to deaths, especially in conjunction with other CNS depressants, is needed by consumers and clinicians. Improved monitoring of illicit supplies could identify emerging issues of medicines' abuse.
Topics: Adult; Alprazolam; Analgesics, Opioid; Benzodiazepines; Central Nervous System Depressants; Humans; Hypnotics and Sedatives; Male; Opiate Alkaloids; Scotland; State Medicine
PubMed: 35912873
DOI: 10.1177/02698811221104065 -
Prehospital and Disaster Medicine Apr 2023Proximal femoral fractures are characterized as one of the most common and most painful injuries sustained by patients of all ages and are associated with high rates of... (Meta-Analysis)
Meta-Analysis Review
INTRODUCTION
Proximal femoral fractures are characterized as one of the most common and most painful injuries sustained by patients of all ages and are associated with high rates of oligoanalgesia in the prehospital setting. Current treatments include oral and parenteral opiates and sedative agents, however regional anesthesia techniques for pain relief may provide superior analgesia with lower risk of side effects during patient transportation. The fascia iliaca compartment block (FICB) is an inexpensive treatment which is performed with minimal additional equipment, ultimately making it suitable in prehospital settings.
PROBLEM
In adult patients sustaining proximal femoral fractures in the prehospital setting, what is the effect of the FICB on non-verbal pain scores (NVPS), patient satisfaction, success rate, and adverse events compared to traditional analgesic techniques?
METHODS
A librarian-assisted literature search was conducted of the Cochrane Database, Ovid MEDLINE, PubMed, Ovid EMBASE, Scopus, and Web of Science indexes. Additionally, reference lists for potential review articles from the , the , the , , and the were reviewed. Databases and journals were searched during the period from January 1, 1980 through July 1, 2022. Each study was scrutinized for quality and validity and was assigned a level of evidence as per Oxford Center for Evidence-Based Medicine guidelines.
RESULTS
Five studies involving 340 patients were included (ie, two randomized control trials [RCTs], two observational studies, and one prospective observational study). Pain scores decreased after prehospital FICB across all included studies by a mean of 6.65 points (5.25 - 7.5) on the NVPS. Out of the total 257 FICBs conducted, there was a success rate of 230 (89.3%). Of these, only two serious adverse events were recorded, both of which related to local analgesia toxicity. Neither resulted in long-term sequelae and only one required treatment.
CONCLUSION
Use of FICBs results in a significant decrease in NVPS in the prehospital setting, and they are ultimately suitable as regional analgesic techniques for proximal femur fractures. It carries a low risk of adverse events and may be performed by health care practitioners of various backgrounds with suitable training. The results suggest that FICBs are more effective for pain management than parenteral or oral opiates and sedative agents alone and can be used as an appropriate adjunct to pain management.
Topics: Adult; Humans; Nerve Block; Femoral Fractures; Proximal Femoral Fractures; Pain; Emergency Medical Services; Fascia; Opiate Alkaloids; Hip Fractures; Randomized Controlled Trials as Topic; Observational Studies as Topic
PubMed: 36912109
DOI: 10.1017/S1049023X23000298