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Opiate dependence

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https://www.readbyqxmd.com/read/28081197/morphine-withdrawal-modifies-prion-protein-expression-in-rat-hippocampus
#1
Vincenzo Mattei, Stefano Martellucci, Francesca Santilli, Valeria Manganelli, Tina Garofalo, Niccolò Candelise, Alessandra Caruso, Maurizio Sorice, Sergio Scaccianoce, Roberta Misasi
The hippocampus is a vulnerable brain structure susceptible to damage during aging and chronic stress. Repeated exposure to opioids may alter the brain so that it functions normally when the drugs are present, thus, a prolonged withdrawal might lead to homeostatic changes headed for the restoration of the physiological state. Abuse of morphine may lead to Reacting Oxygen Species-induced neurodegeneration and apoptosis. It has been proposed that during morphine withdrawal, stress responses might be responsible, at least in part, for long-term changes of hippocampal plasticity...
2017: PloS One
https://www.readbyqxmd.com/read/28072037/benzodiazepine-maintenance-in-opiate-substitution-treatment-good-or-bad-a-retrospective-primary-care-case-note-review
#2
Adam Bakker, Emmanuel Streel
BACKGROUND: Co-prescribing benzodiazepines to patients in opiate substitution treatment is controversial and often alleged to increase mortality. In an inner-London general practice, patients with problematic benzodiazepine co-dependence were allowed benzodiazepine maintenance treatment (BMT) since 1994, providing an opportunity for analysis. METHOD: 1) Case-note review of all 278 opiate substitution treatment patients, accruing 1289 patient treatment years; 46% had concurrent BMT...
January 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28059434/assessment-of-abuse-liability-of-tramadol-among-experienced-drug-users-double-blind-crossover-randomized-controlled-trial
#3
Mrinmay Das, Raka Jain, Anju Dhawan, Amandeep Kaur
BACKGROUND: Tramadol is a widely used opioid analgesic. Different preclinical, clinical, and postmarketing surveillance studies show conflicting results regarding abuse potential of this drug. METHODS: A randomized double-blind complete crossover study was conducted at National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi. Total subjects were 10, comprising total 120 observations (each subject assessed at baseline, 5, 45, and 240 minutes)...
November 2016: Journal of Opioid Management
https://www.readbyqxmd.com/read/28050185/comparing-acceptance-and-commitment-group-therapy-and-12-steps-narcotics-anonymous-in-addict-s-rehabilitation-process-a-randomized-controlled-trial
#4
Manoochehr Azkhosh, Ali Farhoudianm, Hemn Saadati, Fateme Shoaee, Leila Lashani
Objective: Substance abuse is a socio-psychological disorder. The aim of this study was to compare the effectiveness of acceptance and commitment therapy with 12-steps Narcotics Anonymous on psychological well-being of opiate dependent individuals in addiction treatment centers in Shiraz, Iran. Method: This was a randomized controlled trial. Data were collected at entry into the study and at post-test and follow-up visits. The participants were selected from opiate addicted individuals who referred to addiction treatment centers in Shiraz...
October 2016: Iranian Journal of Psychiatry
https://www.readbyqxmd.com/read/28042871/acute-d3-antagonist-gsk598809-selectively-enhances-neural-response-during-monetary-reward-anticipation-in-drug-and-alcohol-dependence
#5
Anna Murphy, Liam J Nestor, John McGonigle, Louise Paterson, Venkataramana Boyapati, Karen D Ersche, Remy Flechais, Shankar Kuchibatla, Antonio Metastasio, Csaba Orban, Filippo Passetti, Laurence Reed, Dana Smith, John Suckling, Eleanor Taylor, Trevor W Robbins, Anne Lingford-Hughes, David J Nutt, John Fw Deakin, Rebecca Elliott
: Evidence suggests that disturbances in neurobiological mechanisms of reward and inhibitory control maintain addiction and provoke relapse during abstinence. Abnormalities within the dopamine system may contribute to these disturbances and pharmacologically targeting the D3 dopamine receptor (DRD3) is therefore of significant clinical interest. We used functional magnetic resonance imaging to investigate the acute effects of the DRD3 antagonist GSK598809 on anticipatory reward processing, using the monetary incentive delay task (MIDT), and response inhibition using the go/no-go task (GNGT)...
January 2, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28012859/endogenous-opiates-and-behavior-2015
#6
REVIEW
Richard J Bodnar
This paper is the thirty-eighth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2015 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia, stress and social status, tolerance and dependence, learning and memory, eating and drinking, drug abuse and alcohol, sexual activity and hormones, pregnancy, development and endocrinology, mental illness and mood, seizures and neurologic disorders, electrical-related activity and neurophysiology, general activity and locomotion, gastrointestinal, renal and hepatic functions, cardiovascular responses, respiration and thermoregulation, and immunological responses...
December 22, 2016: Peptides
https://www.readbyqxmd.com/read/28009632/anti-nerve-growth-factor-therapy-increases-spontaneous-day-night-activity-in-mice-with-orthopedic-surgery-induced-pain
#7
Lisa A Majuta, Jean-Marc G Guedon, Stefanie A T Mitchell, Michael H Ossipov, Patrick W Mantyh
Total knee arthroplasty (TKA) and total hip arthroplasty (THA) are two of the most common and successful surgical interventions to relieve osteoarthritis pain. Control of postoperative pain is critical for patients to fully participate in the required physical therapy which is the most influential factor in effective postoperative knee rehabilitation. Currently opiates are a mainstay for managing postoperative orthopedic surgery pain including TKA/THA pain. Recently, issues including efficacy, dependence, overdose and death from opiates have made clinicians and researchers more critical of use of opioids for treating non-malignant skeletal pain...
December 15, 2016: Pain
https://www.readbyqxmd.com/read/28007501/synergistic-attenuation-of-chronic-pain-using-mu-opioid-and-cannabinoid-receptor-2-agonists
#8
Shaness A Grenald, Madison A Young, Yue Wang, Michael H Ossipov, Mohab M Ibrahim, Tally M Largent-Milnes, Todd W Vanderah
The misuse of prescription opiates is on the rise with combination therapies (e.g. acetaminophen or NSAIDs) resulting in severe liver and kidney damage. In recent years, cannabinoid receptors have been identified as potential modulators of pain and rewarding behaviors associated with cocaine, nicotine and ethanol in preclinical models. Yet, few studies have identified whether mu opioid agonists and CB2 agonists act synergistically to inhibit chronic pain while reducing unwanted side effects including reward liability...
December 20, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27984493/anti-nerve-growth-factor-therapy-increases-spontaneous-day-night-activity-in-mice-with-orthopedic-surgery-induced-pain
#9
Lisa A Majuta, Jean-Marc G Guedon, Stefanie A T Mitchell, Michael H Ossipov, Patrick W Mantyh
Total knee arthroplasty (TKA) and total hip arthroplasty (THA) are two of the most common and successful surgical interventions to relieve osteoarthritis pain. Control of postoperative pain is critical for patients to fully participate in the required physical therapy which is the most influential factor in effective postoperative knee rehabilitation. Currently opiates are a mainstay for managing postoperative orthopedic surgery pain including TKA/THA pain. Recently, issues including efficacy, dependence, overdose and death from opiates have made clinicians and researchers more critical of use of opioids for treating non-malignant skeletal pain...
December 15, 2016: Pain
https://www.readbyqxmd.com/read/27979929/comparative-evaluation-of-drug-deposition-in-hair-samples-collected-from-different-anatomical-body-sites
#10
Manolis N Tzatzarakis, Athanasios K Alegakis, Matthaios P Kavvalakis, Elena Vakonaki, Polychronis D Stivaktakis, Katerina Kanaki, Alexander I Vardavas, Emmanouil G Barbounis, Aristidis M Tsatsakis
In this study, we focused on the validation of a method for the simultaneous detection and quantification of cannabinoids, cocaine and opiates in hair as well as on the distribution of the drugs deposition in hair collected from different anatomical body sites. The proposed analytical procedure was validated for various parameters such as selectivity, linearity, limit of quantification, precision, accuracy, matrix effect and recovery. Four hundred and eighty-one samples were collected during 2010-2015 from 231 drug abusers...
December 15, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27974903/morphine-antidependence-of-erythroxylum-cuneatum-miq-kurz-in-neurotransmission-processes-in-vitro
#11
Noor Azuin Suliman, Mohamad Aris Mohd Moklas, Che Norma Mat Taib, Mohd Ilham Adenan, Mohamad Taufik Hidayat Baharuldin, Rusliza Basir, Zulkhairi Amom
Opiate abuse has been studied to cause adaptive changes observed in the presynaptic release and the mediated-synaptic plasticity proteins. The involvement of neuronal SNARE proteins reveals the role of the neurotransmitter release in expressing the opioid actions. The present study was designed to determine the effect of the alkaloid extract of Erythroxylum cuneatum (E. cuneatum) against chronic morphine and the influences of E. cuneatum on neurotransmission processes observed in vitro. The human neuroblastoma cell line, SK-N-SH, was treated with the morphine, methadone, or E...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27974484/buprenorphine-norbuprenorphine-r-methadone-and-s-methadone-upregulate-bcrp-abcg2-expression-by-activating-aryl-hydrocarbon-receptor-in-human-placental-trophoblasts
#12
Naveen K Neradugomma, Michael Z Liao, Qingcheng Mao
Opioid dependence during pregnancy is a rising concern. Maintaining addicted pregnant women on long-acting opioid receptor agonist is the most common strategy to manage pregnancy drug abuse. Methadone (MET) and Buprenorphine (BUP) are widely prescribed for opiate-maintenance therapy. Norbuprenorphine (NBUP) is the primary active metabolite of BUP. These medications can cross the placenta to the fetus, leading to postpartum neonatal abstinence syndrome. Despite their use during pregnancy, little is known about the cellular changes brought about by these drugs in the placenta...
December 14, 2016: Molecular Pharmacology
https://www.readbyqxmd.com/read/27940068/drug-decriminalization-and-the-price-of-illicit-drugs
#13
Sónia Félix, Pedro Portugal
BACKGROUND: This study is an empirical assessment of the impact of the drug decriminalization policy followed by Portugal in July 2001, on the price of illicit drugs. METHODS: The analysis is performed using a difference-in-differences approach and the Synthetic Control Method in order to construct a synthetic control unit from a convex combination of countries. RESULTS: The results suggest that the prices of opiates and cocaine in the post-treatment period did not decrease in the sequence of the policy change...
January 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/27936293/effects-of-incentives-for-naltrexone-adherence-on-opiate-abstinence-in-heroin-dependent-adults
#14
Brantley P Jarvis, August F Holtyn, Anthony DeFulio, Kelly E Dunn, Jeffrey J Everly, Jeannie-Marie S Leoutsakos, Annie Umbricht, Michael Fingerhood, George E Bigelow, Kenneth Silverman
AIM: To test whether an incentive-based intervention that increased adherence to naltrexone also increased opiate abstinence. DESIGN: Post-hoc combined analysis of three earlier randomized controlled trials that individually showed that incentives for adherence to oral and to extended-release injection naltrexone dosing schedules increased naltrexone adherence but not opiate abstinence. SETTING: Outpatient therapeutic workplace in Baltimore, MD, USA...
December 9, 2016: Addiction
https://www.readbyqxmd.com/read/27933094/the-newer-opioid-agonist-treatment-with-lower-substitutive-opiate-doses-is-associated-with-better-toxicology-outcome-than-the-older-harm-reduction-treatment
#15
Jacopo V Bizzarri, Valentina Casetti, Livia Sanna, Angelo Giovanni Icro Maremmani, Luca Rovai, Silvia Bacciardi, Daria Piacentino, Andreas Conca, Icro Maremmani
BACKGROUND: Charge-free heroin use disorder treatment in Italy follows two main approaches, i.e., harm reduction treatment (HRT) strategy in community low-threshold facilities for drug addiction and opioid agonist treatment (OAT) in high-threshold facilities for opioid addiction, focusing on pharmacological maintenance according to the Dole and Nyswander strategy. We aimed to compare the impact of HRT and OAT on patient outcome, as assessed through negativity for drugs on about 1-year urinalyses...
2016: Annals of General Psychiatry
https://www.readbyqxmd.com/read/27922595/memories-of-opiate-withdrawal-emotional-states-correlate-with-specific-gamma-oscillations-in-the-nucleus-accumbens
#16
Cyril Dejean, Mathieu Sitko, Paul Girardeau, Amine Bennabi, Stéphanie Caillé, Martine Cador, Thomas Boraud, Catherine Le Moine
Affective memories associated with the negative emotional state experienced during opiate withdrawal are central in maintaining drug-taking, seeking and relapse. Nucleus accumbens (NAC) is a key structure both for acute withdrawal and withdrawal memories reactivation, however NAC neuron coding properties underpinning the expression of these memories remain largely unknown. Here we aimed at deciphering the role of NAC neurons in the encoding and retrieval of opiate withdrawal memory. Chronic single neuron and local field potentials recordings were performed in morphine-dependent rats and placebo-controls...
December 6, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27915259/-standing-outside-the-junkie-door-service-users-experiences-of-using-community-pharmacies-to-access-treatment-for-opioid-dependency
#17
Andrew Radley, Karen Melville, Phyllis Easton, Brian Williams, John F Dillon
AIM: To explore experiences of service users attending a community pharmacy to receive opiate replacement therapy (ORT). METHOD: Qualitative study involving seven focus groups undertaken within care centres and prison educational centre in Tayside, Scotland using 41 participants. Thematic analysis undertaken of experiences of different groups of service users and carers. RESULTS: Participants described the social context surrounding attendance at community pharmacies...
December 2, 2016: Journal of Public Health
https://www.readbyqxmd.com/read/27901585/a-review-of-positron-emission-tomography-studies-exploring-the-dopaminergic-system-in-substance-use-with-a-focus-on-tobacco-as-a-co-variate
#18
Thulasi Thiruchselvam, Saima Malik, Bernard Le Foll
With the evolving sensitivity of positron emission tomography (PET) and the emergence of novel radiotracers, greater insight has been gained into the dopaminergic system as it relates to substance use. In this review, we summarize PET investigations from the last ten years that explore the dopaminergic system in tobacco, alcohol, stimulant, opiates, and cannabis addiction. In light of the prevalence of substance co-use, this review will also explore the effect of tobacco and other substance abuse co-morbidity on the dopaminergic system across study samples in the reviewed literature...
November 30, 2016: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/27877102/inhibition-of-gabaergic-neurotransmission-by-hiv-1-tat-and-opioid-treatment-in-the-striatum-involves-%C3%AE-opioid-receptors
#19
Changqing Xu, Sylvia Fitting
Due to combined antiretroviral therapy (cART), human immunodeficiency virus type 1 (HIV-1) is considered a chronic disease with high prevalence of mild forms of neurocognitive impairments, also referred to as HIV-associated neurocognitive disorders (HAND). Although opiate drug use can exacerbate HIV-1 Tat-induced neuronal damage, it remains unknown how and to what extent opioids interact with Tat on the GABAergic system. We conducted whole-cell recordings in mouse striatal slices and examined the effects of HIV-1 Tat in the presence and absence of morphine (1 μM) and damgo (1 μM) on GABAergic neurotransmission...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27859761/methadone-complications-amongst-opioid-dependent-patients-in-malaysia-a-case-series
#20
Philip George, Balasingam Vicknasingam, Sivakumar Thurairajasingam, Parameswaran Ramasamy, Haslina Mohd Yusof, Mohd Azhar Bin Mohd Yasin, Zia U Bahkt Sultan Shah
INTRODUCTION AND AIMS: Opioid dependence remains the main type of illicit substance used in Malaysia, which has an estimated 187 771 opiate users. There are currently 333 active methadone maintenance treatment centres nationwide. Although methadone has proven to be an effective maintenance therapy, it has clinical concerns which can have an impact on its effectiveness and safety. DESIGN, METHODS AND RESULTS: A case series of seven patients from Malaysian private and public hospital settings who had an adverse reaction with methadone is discussed...
November 8, 2016: Drug and Alcohol Review
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