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Opiate dependence

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https://www.readbyqxmd.com/read/27915259/-standing-outside-the-junkie-door-service-users-experiences-of-using-community-pharmacies-to-access-treatment-for-opioid-dependency
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/27833477/transversus-abdominis-plane-block-in-renal-allotransplant-recipients-a-retrospective-chart-review
#5
S R Gopwani, M A Rosenblatt
CONTEXT: The efficacy of the transversus abdominis plane (TAP) block appears to vary considerably, depending on the surgical procedure and block technique. AIMS: This study aims to add to the existing literature and provide a more clear understanding of the TAP blocks role as a postoperative analgesic technique, specifically in renal allotransplant recipients. SETTINGS AND DESIGN: A retrospective chart review was conducted by querying the intraoperative electronic medical record system of a 1200-bed tertiary academic hospital over a 5 months period, and reviewing anesthetic techniques, as well as postoperative morphine equivalent consumption...
October 2016: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/27833235/an-unusual-case-of-baclofen-abuse
#6
Soumitra Das, Dhanya Sasidharan Palappalllil, Sumesh Thoppil Purushothaman, Varun Rajan
Baclofen was initially used for the treatment of spastic conditions. Last decade has seen its emergence as a treatment of profound interest in alcohol dependence, opiates and cocaine abuse, and tobacco addiction. However, the published literature on baclofen abuse is sparse. Here, we report a patient with baclofen abuse.
September 2016: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/27819741/association-between-dopamine-d2-receptor-gene-polymorphisms-and-the-risk-of-heroin-dependence
#7
N Wang, J B Zhang, J Zhao, X T Cai, Y S Zhu, S B Li
Heroin dependence is a chronic relapsing brain disease. Researchers have reported that the dopamine D2 receptor (DRD2) is involved in the development of opiate dependence. To identify markers that contribute to the genetic susceptibility to heroin addiction, we examined the potential association between heroin dependence and six polymorphisms of the DRD2 gene using the MassARRAY system. Three hundred and thirty-four patients with heroin dependence and 299 healthy controls participated in the research. Compared with the healthy controls, heroin-dependent patients had a significantly lower frequency of the AA genotype of rs6275 (P = 0...
November 3, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27809831/tailoring-a-brief-intervention-for-illicit-drug-use-and-alcohol-use-in-irish-methadone-maintained-opiate-dependent-patients-a-qualitative-process
#8
Catherine Darker, Brion Sweeney, Eamon Keenan, Lucy Whiston, Rolande Anderson, Joe Barry
BACKGROUND: The World Health Organization (WHO) recommend the tailoring of a brief intervention (BI) programme of research to ensure that it is both culturally and contextually appropriate for the country and the environment in which it is being tested. The majority of BI research has been conducted with non-opioid dependent participants. The current study developed a tailored BI for illicit drug use and alcohol use to a methadone maintained opioid dependent polydrug using cohort of patients...
November 3, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27796936/ajoene-restored-behavioral-patterns-and-liver-glutathione-level-in-morphine-treated-c57bl6-mice
#9
Jaesuk Yun, Sergiy Oliynyk, Yeonju Lee, Jieun Kim, Kyunghwa Yun, Raok Jeon, Jae-Ha Ryu, Seikwan Oh
Oxidative stress exacerbates drug dependence induced by administration of opiate analgesics such as morphine-induced tolerance and physical dependence associated with the reduction in hepatic glutathione (GSH) level. Ajoene obtained from garlic (Allium sativum L.) has been reported for anti-tumorigenic, anti-oxidative and neuroprotective properties, however, little is known about its effect on morphine-induced dependence. Therefore, this study aimed at the effect of ajoene on physical and/or psychological dependence and liver GSH content in morphine-treated mice...
October 28, 2016: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/27774136/combined-interactions-with-i1-i2-imidazoline-binding-sites-and-%C3%AE-2-adrenoceptors-to-manage-opioid-addiction
#10
Maria Elena Giusepponi, Carlo Cifani, Maria Vittoria Micioni Di Bonaventura, Laura Mattioli, Alan Hudson, Eleonora Diamanti, Fabio Del Bello, Mario Giannella, Valerio Mammoli, Corinne Dalila Paoletti, Alessandro Piergentili, Maria Pigini, Wilma Quaglia
Tolerance and dependence associated with chronic opioid exposure result from molecular, cellular, and neural network adaptations. Such adaptations concern opioid and nonopioid systems, including α2-adrenoceptors (α2-ARs) and I1- and I2-imidazoline binding sites (IBS). Agmatine, one of the hypothesized endogenous ligands of IBS, targeting several systems including α2-ARs and IBS, proved to be able to regulate opioid-induced analgesia and to attenuate the development of tolerance and dependence. Interested in the complex pharmacological profile of agmatine and considering the nature of its targets, we evaluated two series of imidazolines, rationally designed to simultaneously interact with I1-/I2-IBS or I1-/I2-IBS/α2-ARs...
October 13, 2016: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27753720/cannabis-as-secondary-drug-is-not-associated-with-a-greater-risk-of-death-in-patients-with-opiate-cocaine-or-alcohol-dependence
#11
Daniel Fuster, Arantza Sanvisens, Ferran Bolao, Paola Zuluaga, Inmaculada Rivas, Magi Farré, Jordi Tor, Robert Muga
BACKGROUND: The health burden of cannabis use in patients with other substance dependencies is not fully understood. OBJECTIVE: To assess the impact of cannabis use as secondary drug on mortality of patients with other major substance use disorders. PARTICIPANTS: Patients with opiate, cocaine, or alcohol dependence admitted to detoxification from 2001 to 2010 at a teaching hospital in Badalona, Spain. MAIN MEASUREMENTS: Sociodemographic characteristics, drug use, medical comorbidities, and urine drug screens were obtained at admission...
October 6, 2016: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/27751532/blockade-of-dorsal-hippocampal-orexin-1-receptors-impaired-morphine-induced-state-dependent-learning
#12
Maryam Farahmandfar, Mehdi Kadivar, Sareh Rastipisheh
Behavioral abnormalities associated with opiate addiction include memory and learning deficits, which are the result of some alterations in the neuromodulatory systems. Recently, orexin has shown to influence drug addiction neural circuitry, specifically in mediating reward-related perception and memory. To explore the possible interaction of orexinergic and opioidergic system on modulation of learning and memory, we have investigated the effects of intra-dorsal hippocampal (intra-CA1) administration of orexin-1 receptor agonist and the competitive orexin-1 antagonist, SB-334867, on morphine-induced memory impairment by using step-down passive avoidance task in mice...
December 2016: Neuropeptides
https://www.readbyqxmd.com/read/27736284/continuous-perioperative-sublingual-buprenorphine
#13
Marcelina Jasmine Silva, Andrea Rubinstein
Buprenorphine, a semisynthetic thebaine derivative, is a unique opioid, as it has activity at multiple receptors, including mu (partial agonist), kappa (antagonist), OLR-1 (agonist), and delta (antagonist). Because buprenorphine's pharmacology is relatively complex, misconceptions about its actions are common. Most other opioids act solely or predominately as full mu receptor agonists. Common practice at many institutions calls for the cessation of regular buprenorphine use 48-72 hours prior to surgery. This practice is based on three foundational theories that have come from scant data about the properties of buprenorphine: (1) that buprenorphine is only a partial mu agonist and therefore is not a potent analgesic; (2) because buprenorphine has a ceiling effect on respiratory depression, it also has a ceiling effect on analgesia; and (3) that buprenorphine acts as a "blockade" to the analgesic effects of other opiates when coadministered due to its strong binding affinity...
October 13, 2016: Journal of Pain & Palliative Care Pharmacotherapy
https://www.readbyqxmd.com/read/27730515/glucocorticoid-homeostasis-in-the-dentate-gyrus-is-essential-for-opiate-withdrawal-associated-memories
#14
Daniel García-Pérez, Szilamer Ferenczi, Krisztina J Kovács, M Luisa Laorden, M Victoria Milanés, Cristina Núñez
Drug-withdrawal-associated aversive memories might trigger relapse to drug-seeking behavior. However, changes in structural and synaptic plasticity, as well as epigenetic mechanisms, which may be critical for long-term aversive memory, have yet to be elucidated. We used male Wistar rats and performed conditioned-place aversion (CPA) paradigm to uncover the role of glucocorticoids (GCs) on plasticity-related processes that occur within the dentate gyrus (DG) during opiate-withdrawal conditioning (memory formation-consolidation) and after reactivation by re-exposure to the conditioned environment (memory retrieval)...
October 11, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27729240/transgenerational-attenuation-of-opioid-self-administration-as-a-consequence-of-adolescent-morphine-exposure
#15
Fair M Vassoler, David J Oliver, Cristina Wyse, Ashley Blau, Michael Shtutman, Jill R Turner, Elizabeth M Byrnes
The United States is in the midst of an opiate epidemic, with abuse of prescription and illegal opioids increasing steadily over the past decade. While it is clear that there is a genetic component to opioid addiction, there is a significant portion of heritability that cannot be explained by genetics alone. The current study was designed to test the hypothesis that maternal exposure to opioids prior to pregnancy alters abuse liability in subsequent generations. Female adolescent Sprague Dawley rats were administered morphine at increasing doses (5-25 mg/kg, s...
October 8, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27728875/different-contribution-of-glucocorticoids-in-the-basolateral-amygdala-to-the-formation-and-expression-of-opiate-withdrawal-associated-memories
#16
Daniel García-Pérez, Szilamer Ferenczi, Krisztina J Kovács, M Luisa Laorden, M Victoria Milanés, Cristina Núñez
Drug-withdrawal aversive memories generate a motivational state leading to compulsive drug taking, with plasticity changes in the basolateral amygdala (BLA) being essential in aversive motivational learning. The conditioned-place aversion (CPA) paradigm allows for measuring the negative affective component of drug withdrawal. First, CPA triggers association between negative affective consequences of withdrawal with context (memory consolidation). Afterwards, when the animals are re-exposed to the paired environment, they avoid it due to the association between the context and aversive memories (memory retrieval)...
September 28, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27712710/measuring-health-and-broader-well-being-benefits-in-the-context-of-opiate-dependence-the-psychometric-performance-of-the-icecap-a-and-the-eq-5d-5l
#17
Ilias Goranitis, Joanna Coast, Ed Day, Alex Copello, Nick Freemantle, Jennifer Seddon, Carmel Bennett, Emma Frew
BACKGROUND: Measuring outcomes in economic evaluations of social care interventions is challenging because both health and well-being benefits are evident. The ICEpop CAPability instrument for adults (ICECAP-A) and the five-level EuroQol five-dimensional questionnaire (EQ-5D-5L) are measures potentially suitable for the economic evaluation of treatments for substance use disorders. Evidence for their validity in this context is, however, lacking. OBJECTIVES: To assess the construct validity of the ICECAP-A and the EQ-5D-5L in terms of convergent and discriminative validity and sensitivity to change on the basis of standard clinical measures (Clinical Outcomes in Routine Evaluation-Outcome Measure, Treatment Outcomes Profile, Interpersonal Support Evaluation List, Leeds Dependence Questionnaire, and Social Satisfaction Questionnaire)...
September 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/27695638/frontal-metabolite-concentration-deficits-in-opiate-dependence-relate-to-substance-use-cognition-and-self-regulation
#18
Donna E Murray, Timothy C Durazzo, Thomas P Schmidt, Christoph Abé, Joseph Guydish, Dieter J Meyerhoff
OBJECTIVE: Proton magnetic resonance spectroscopy (1H MRS) in opiate dependence showed abnormalities in neuronal viability and glutamate concentration in the anterior cingulate cortex (ACC). Metabolite levels in dorsolateral prefrontal cortex (DLPFC) or orbitofrontal cortex (OFC) and their neuropsychological correlates have not been investigated in opiate dependence. METHODS: Single-volume proton MRS at 4 Tesla and neuropsychological testing were conducted in 21 opiate-dependent individuals (OD) on buprenorphine maintenance therapy...
August 2016: Journal of Addiction Research & Therapy
https://www.readbyqxmd.com/read/27634143/effects-of-drugs-of-abuse-on-hippocampal-plasticity-and-hippocampus-dependent-learning-and-memory-contributions-to-development-and-maintenance-of-addiction
#19
Munir Gunes Kutlu, Thomas J Gould
It has long been hypothesized that conditioning mechanisms play major roles in addiction. Specifically, the associations between rewarding properties of drugs of abuse and the drug context can contribute to future use and facilitate the transition from initial drug use into drug dependency. On the other hand, the self-medication hypothesis of drug abuse suggests that negative consequences of drug withdrawal result in relapse to drug use as an attempt to alleviate the negative symptoms. In this review, we explored these hypotheses and the involvement of the hippocampus in the development and maintenance of addiction to widely abused drugs such as cocaine, amphetamine, nicotine, alcohol, opiates, and cannabis...
October 2016: Learning & Memory
https://www.readbyqxmd.com/read/27629823/impact-of-early-childhood-trauma-on-retention-and-phase-advancement-in-an-outpatient-buprenorphine-treatment-program
#20
Nihit Kumar, Zachary N Stowe, Xiaotong Han, Michael J Mancino
BACKGROUND: Early adverse life events such as childhood trauma have been linked to development of substance use disorders. The prevalence and impact on treatment of early childhood trauma in opioid-dependent individuals has received limited research attention. The present study examined reported childhood trauma and its relation to retention and adherence in an outpatient buprenorphine treatment program. METHODS: Medical records of individuals who completed childhood trauma questionnaire (CTQ) were reviewed to extract baseline data and demographics (N = 113)...
October 2016: American Journal on Addictions
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