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Opiate dependence

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https://www.readbyqxmd.com/read/28716791/factors-associated-with-nicotine-dependence-during-methadone-maintenance-treatment-findings-from-a-multisite-survey-in-vietnam
#1
Huyen Phuc Do, Long Hoang Nguyen, Nhung Phuong Thi Nguyen, Chau Ngo, Huong Lan Thi Nguyen, Giang Tong Le, Linh Khanh Nguyen, Cuong Tat Nguyen, Bach Xuan Tran, Huong Thi Le, Thuc Minh Thi Vu, Huong Thu Thi Phan, Tho Dinh Tran, Carl A Latkin, Michael P Dunne
OBJECTIVES: Smoking is associated with adverse health outcomes among drug users, including those in treatment. To date, however, there has been little evidence about smoking patterns among people receiving opioid-dependence treatment in developing countries. We examined self-reported nicotine dependence and associated factors in a large sample of opioid-dependent patients receiving methadone maintenance treatment (MMT) in northern Vietnam. SETTING: Five clinics in Hanoi (urban area) and Nam Dinh (rural area)...
July 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28687506/effects-of-alkaloid-rich-extract-from-mitragyna-speciosa-korth-havil-on-naloxone-precipitated-morphine-withdrawal-symptoms-and-local-field-potential-in-the-nucleus-accumbens-of-mice
#2
Dania Cheaha, Chayaporn Reakkamnuan, Jakkrit Nukitram, Somsmorn Chittrakarn, Pimpimol Phukpattaranont, Niwat Keawpradub, Ekkasit Kumarnsit
ETHNOPHARMACOLOGICAL RELEVANCE: Mitragyna speciosa (Korth.) Havil. (M. speciosa) is among the most well-known plants used in ethnic practice of Southeast Asia. It has gained increasing attention as a plant with potential to substitute morphine in addiction treatment program. However, its action on the central nervous system is controversial. AIM OF THE STUDY: This study investigated the effects of M. speciosa alkaloid extract on naloxone-precipitated morphine withdrawal and neural signaling in the nucleus accumbens (NAc, brain reward center) of mice...
July 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28669034/cannabinoid-reward-and-aversion-effects-in-the-posterior-ventral-tegmental-area-are-mediated-through-dissociable-opiate-receptor-subtypes-and-separate-amygdalar-and-accumbal-dopamine-receptor-substrates
#3
Tasha Ahmad, Steven R Laviolette
RATIONALE: The ventral tegmental area (VTA) and its projections to the basolateral amygdala (BLA) and nucleus accumbens (NAc) are critical for cannabinoid-related motivational effects. Cannabinoid CB1 receptor (CB1R) transmission modulates VTA dopamine (DA) neuron activity and previous reports demonstrate anatomically segregated effects of CB1R transmission in the VTA. However, the underlying pharmacological and anatomical regions responsible for these effects are currently unknown. OBJECTIVES: The objective of the study is to characterize the motivational effects of localized anterior vs...
August 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28656735/an-analysis-of-genetic-association-in-opioid-dependence-susceptibility
#4
D Nagaya, Z Zahari, M Saleem, B H Yahaya, S C Tan, N M Yusoff
WHAT IS KNOWN: Drug addiction is a novelty-seeking personality trait that is associated with the candidate genes OPRD1 (opioid delta receptors), OPRK1 (opioid kappa receptors) and PDYN (prodynorphin). However, associations between single nucleotide polymorphisms (SNPs) rs1042114 (80G>T) of the OPRD1 gene, rs702764 (843 A>G) of the OPRK1 gene, and rs910080 (3' UTR _743T>C), rs1997794 (5' UTR -381A>G) and rs1022563 (3' UTR) of the PDYN gene and novelty seeking remain controversial as reported results have not been reproducible...
June 27, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28653079/naloxone-effects-on-extinction-of-ethanol-and-cocaine-induced-conditioned-place-preference-in-mice
#5
Laura Font, Christa A Houck, Christopher L Cunningham
RATIONALE: Previous studies found that naloxone (NLX) facilitated choice extinction of ethanol conditioned place preference (CPP) using long (60 min) test sessions, but there is little information on the variables determining this effect. OBJECTIVES: These studies examined repeated exposure to NLX during extinction of ethanol- or cocaine-induced CPP using both short and long tests. METHODS: DBA/2J mice were injected with NLX (0 or 10 mg/kg) before three 10- or 60-min choice extinction tests (experiment 1)...
June 26, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28640990/opiate-antagonists-do-not-interfere-with-the-clinical-benefits-of-stimulants-in-adhd-a-double-blind-placebo-controlled-trial-of-the-mixed-opioid-receptor-antagonist-naltrexone
#6
Thomas J Spencer, Pradeep Bhide, Jinmin Zhu, Stephen V Faraone, Maura Fitzgerald, Amy M Yule, Mai Uchida, Andrea E Spencer, Anna M Hall, Ariana J Koster, Joseph Biederman
OBJECTIVE: Methylphenidate activates μ-opioid receptors, which are linked to euphoria. μ-Opioid antagonists, such as naltrexone, may attenuate the euphoric effects of stimulants, thereby minimizing their abuse potential. This study assessed whether the combination of naltrexone with methylphenidate is well-tolerated while preserving the clinical benefits of stimulants in subjects with attention-deficit/hyperactivity disorder (ADHD). METHODS: We conducted a 6-week, double-blind, placebo-controlled, randomized clinical trial of naltrexone in adults with DSM-IV ADHD receiving open treatment with a long-acting formulation of methylphenidate from January 2013 to July 2015...
June 20, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28631527/buprenorphine-naloxone-versus-methadone-and-lofexidine-in-community-stabilisation-and-detoxification-a-randomised-controlled-trial-of-low-dose-short-term-opiate-dependent-individuals
#7
Fergus D Law, Alison M Diaper, Jan K Melichar, Simon Coulton, David J Nutt, Judy S Myles
Buprenorphine/naloxone, methadone and lofexidine are medications with utility in the treatment of opiate withdrawal. We report the first randomised controlled trial to compare the effects of these two medications on withdrawal symptoms and outcome during opiate induction/stabilisation and detoxification. A double-blind randomised controlled trial was conducted in an outpatient satellite clinic of a specialist drug service. Eighty opiate dependent individuals meeting DSM-IV criteria for opiate dependence, using ⩽ ½ g heroin smoked/chased or ¼ g heroin injected or ⩽ 30mg methadone, with ⩽ 3 years of opioid dependency, underwent a short-term opiate treatment programme involving induction/stabilisation on methadone 30mg or buprenorphine/naloxone 4mg/1mg, followed by detoxification (where the methadone group was assisted by lofexidine)...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28630256/the-small-gtpase-rac1-contributes-to-extinction-of-aversive-memories-of-drug-withdrawal-by-facilitating-gabaa-receptor-endocytosis-in-the-vmpfc
#8
Wei-Sheng Wang, Yun-Yue Ju, Qi-Xin Zhou, Jian-Xin Tang, Meng Li, Lei Zhang, Shuo Kang, Zhong-Guo Chen, Yu-Jun Wang, Hui Ji, Yu-Qiang Ding, Lin Xu, Jing-Gen Liu
Extinction of aversive memories has been a major concern in neuropsychiatric disorders such as anxiety disorders and drug addiction. However, the mechanisms underlying extinction of aversive memories are not fully understood. Here, we report that extinction of conditioned place aversion (CPA) to naloxone-precipitated opiate withdrawal in male rats activates Rho GTPase Rac1 in the ventromedial prefrontal cortex (vmPFC) in a BDNF-dependent manner, which determines GABAA receptor (GABAAR) endocytosis via triggering synaptic translocation of activity-regulated cytoskeleton-associated protein (Arc) through facilitating actin polymerization...
June 19, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28627790/regional-cerebral-blood-flow-in-opiate-dependence-relates-to-substance-use-and-neuropsychological-performance
#9
Donna E Murray, Timothy C Durazzo, Thomas P Schmidt, Troy A Murray, Christoph Abé, Joseph Guydish, Dieter J Meyerhoff
Neuroimaging of opiate-dependent individuals indicates both altered brain structure and function. Magnetic resonance-based arterial spin labeling has been used to measure noninvasively cerebral blood flow (i.e. perfusion) in alcohol, tobacco and stimulant dependence; only one arterial spin labeling paper in opiate-dependent individuals demonstrated frontal and parietal perfusion deficits. Additional research on regional brain perfusion in opiate dependence and its relationship to cognition and self-regulation (impulsivity, risk taking and decision making) may inform treatment approaches for opiate-dependent individuals...
June 19, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28627448/opiate-exposure-state-controls-dopamine-d3-receptor-and-cdk5-calcineurin-signaling-in-the-basolateral-amygdala-during-reward-and-withdrawal-aversion-memory-formation
#10
Laura G Rosen, Walter J Rushlow, Steven R Laviolette
The dopamine (DA) D3 receptor (D3R) is highly expressed in the basolateral nucleus of the amygdala (BLA), a neural region critical for processing opiate-related reward and withdrawal aversion-related memories. Functionally, D3R transmission is linked to downstream Cdk5 and calcineurin signaling, both of which regulate D3R activity states and play critical roles in memory-related synaptic plasticity. Previous evidence links D3R transmission to opiate-related memory processing, however little is known regarding how chronic opiate exposure may alter D3R-dependent memory mechanisms...
June 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28618002/novel-psychoactive-substance-use-among-treatment-seeking-opiate-users-the-role-of-life-events-and-psychiatric-symptoms
#11
Máté Kapitány-Fövény, Judit Farkas, Patrícia Andrea Pataki, Anna Kiss, Janka Horváth, Róbert Urbán, Zsolt Demetrovics
OBJECTIVE: Over the past 5 years, a shift to the use of novel psychoactive substances (NPS) has been observed among opioid users. The aim of this study was to assess the potential reasons for NPS use among treatment-seeking patients receiving opiate substitution therapy. METHOD: A structured questionnaire was filled out by a sample of 198 opiate dependent patients of Hungary's National Institute of Psychiatry and Addiction. This questionnaire assessed demographics, treatment characteristics, lifetime substance use, potential reasons for NPS use, negative life events (Life Events Scale), and psychiatric symptoms (Brief Symptom Inventory)...
May 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28615764/evaluation-of-antioxidant-status-high-sensitivity-c-reactive-protein-and-insulin-resistance-in-male-chronic-opiate-users-without-comorbidities
#12
Purvi Purohit, Naresh Nebhinani, Praveen Sharma
BACKGROUND: There is a paucity of data on frequency of metabolic syndrome (MS), insulin resistance (IR), and oxidative stress in Indian opiate users without comorbidities. OBJECTIVES: To determine the influence of opiate use on frequency of MS, homeostasis model assessment for IR (HOMA-IR), high-sensitivity C-reactive protein (hs-CRP), and oxidative stress in opiate-dependent male patients without comorbidities. METHODS: Participants (n = 120) were grouped as controls (Group I), pure opiate dependents (Group II), opiate + tobacco dependents (Group III), and tobacco dependents (Group IV) with a minimum of 1-year dependence participated in the study...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28611691/morphine-reward-promotes-cue-sensitive-learning-implication-of-dorsal-striatal-creb-activity
#13
Mathieu Baudonnat, Jean-Louis Guillou, Marianne Husson, Veronique D Bohbot, Lars Schwabe, Vincent David
Different parallel neural circuits interact and may even compete to process and store information: whereas stimulus-response (S-R) learning critically depends on the dorsal striatum (DS), spatial memory relies on the hippocampus (HPC). Strikingly, despite its potential importance for our understanding of addictive behaviors, the impact of drug rewards on memory systems dynamics has not been extensively studied. Here, we assessed long-term effects of drug- vs food reinforcement on the subsequent use of S-R vs spatial learning strategies and their neural substrates...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28609429/reciprocal-evolution-of-opiate-science-from-medical-and-cultural-perspectives
#14
George B Stefano, Nastazja Pilonis, Radek Ptacek, Richard M Kream
Over the course of human history, it has been common to use plants for medicinal purposes, such as for providing relief from particular maladies and self-medication. Opium represents one longstanding remedy that has been used to address a range of medical conditions, alleviating discomfort often in ways that have proven pleasurable. Opium is a combination of compounds obtained from the mature fruit of opium poppy, papaver somniferum. Morphine and its biosynthetic precursors thebaine and codeine constitute the main bioactive opiate alkaloids contained in opium...
June 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28607934/opioid-addiction-social-problems-associated-and-implications-of-both-current-and-possible-future-treatments-including-polymeric-therapeutics-for-giving-up-the-habit-of-opioid-consumption
#15
REVIEW
M Cristina Benéitez, M Esther Gil-Alegre
BACKGROUND: Detoxification programmes seek to implement the most secure and compassionate ways of withdrawing from opiates so that the inevitable withdrawal symptoms and other complications are minimized. Once detoxification has been achieved, the next stage is to enable the patient to overcome his or her drug addiction by ensuring consumption is permanently and completely abandoned, only after which can the subject be regarded as fully recovered. METHODS: A systematic search on the common databases of relevant papers published until 2016 inclusive...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28581372/hospital-admissions-for-hiv-infected-prisoners-in-italy
#16
Emanuele Pontali, Roberto Ranieri, Elena Rastrelli, Maria Donata Iannece, Anna Maria Ialungo, Serena Dell'Isola, Alfonso Liberti, Pietro Rosario, Rodolfo Casati, Giulio Starnini, Sergio Babudieri
Purpose The purpose of this paper is to give a description of the clinical conditions and patient demographics of inpatient admissions of human immunodeficiency virus (HIV)-infected inmates in three hospital wards that provide hospital care for inmates in Italy. Design/methodology/approach This is a retrospective review of hospital medical admissions of patients living with HIV from January 1 to December 31, 2014, in three Italian referral centers for hospitalization of inmates. Findings A total of 85 admissions for 85 different HIV-infected inmates occurred in 2014 in the three centers participating to the study...
June 12, 2017: International Journal of Prisoner Health
https://www.readbyqxmd.com/read/28581025/clinical-characteristics-and-treatment-patterns-among-patients-diagnosed-with-cluster-headache-in-u-s-healthcare-claims-data
#17
Casey K Choong, Janet H Ford, Allen W Nyhuis, Shivang G Joshi, Rebecca L Robinson, Sheena K Aurora, James M Martinez
OBJECTIVE: To characterize demographics, clinical characteristics, and treatment patterns of patients with cluster headache (CH). BACKGROUND: CH is an uncommon trigeminal autonomic cephalalgia with limited evidence-based treatment options. Patients suffer from extremely painful unilateral headache attacks and autonomic symptoms with episodic and chronic cycles. DESIGN/METHODS: This retrospective analysis used insurance claims from Truven Health Analytics MarketScan(®) research databases from 2009 to 2014...
June 5, 2017: Headache
https://www.readbyqxmd.com/read/28554599/pharmacokinetics-and-pharmacodynamics-of-a-buprenorphine-subcutaneous-depot-formulation-cam2038-for-once-weekly-dosing-in-patients-with-opioid-use-disorder
#18
Christian Haasen, Margareta Linden, Fredrik Tiberg
INTRODUCTION: Sublingual buprenorphine is effective for opioid dependence treatment but associated with misuse, abuse, and diversion. The present Phase I/II study evaluated a novel buprenorphine subcutaneous depot formulation for once-weekly dosing (CAM2038 q1w) in patients receiving maintenance treatment for opioid use disorder with daily sublingual buprenorphine. METHODS: After discontinuation of buprenorphine for 48h, patients received a single CAM2038 q1w dose based on their pre-study daily sublingual maintenance dose...
July 2017: Journal of Substance Abuse Treatment
https://www.readbyqxmd.com/read/28511485/spiritual-well-being-and-associated-factors-with-relapse-in-opioid-addicts
#19
Mohammad-Reza Noormohammadi, Masoud Nikfarjam, Fatemeh Deris, Neda Parvin
INTRODUCTION: Opioid dependence relapse is a complex and multidimensional problem, and lack of spiritual well-being is a major concern in opioid addicts. AIM: This study was conducted to determine spiritual well-being and factors associated with relapse among opioid addicts. MATERIALS AND METHODS: This cross-sectional study was conducted from April 2015 to September 2015. According to purposive sampling, 312 eligible addicted patients were enrolled in the study...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28511099/the-social-exigencies-of-the-gateway-progression-to-the-use-of-illicit-drugs-from-adolescence-into-adulthood
#20
Roy Otten, Chung Jung Mun, Thomas J Dishion
BACKGROUND: There is limited empirical integration between peer clustering theory and the Gateway framework. The goal of the present study was to test the hypothesis that friendship associations partly predict gateway escalations in the use of drugs from adolescence to adulthood. METHOD: This longitudinal study analyzed 3 waves of data from a community sample of 711 male and female participants without a history of illicit drug use reporting drug use at age 17, 22, and 27...
May 11, 2017: Addictive Behaviors
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