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https://www.readbyqxmd.com/read/28818835/src-dependent-phosphorylation-of-%C3%AE-opioid-receptor-at-tyr-336-modulates-opiate-withdrawal
#1
Lei Zhang, Cherkaouia Kibaly, Yu-Jun Wang, Chi Xu, Kyu Young Song, Patrick W McGarrah, Horace H Loh, Jing-Gen Liu, Ping-Yee Law
Opiate withdrawal/negative reinforcement has been implicated as one of the mechanisms for the progression from impulsive to compulsive drug use. Increase in the intracellular cAMP level and protein kinase A (PKA) activities within the neurocircuitry of addiction has been a leading hypothesis for opiate addiction. This increase requires the phosphorylation of μ-opioid receptor (MOR) at Tyr(336) by Src after prolonged opiate treatment in vitro Here, we report that the Src-mediated MOR phosphorylation at Tyr(336) is a prerequisite for opiate withdrawal in mice...
August 17, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28804788/pro-dopamine-regulator-kb220-to-balance-brain-reward-circuitry-in-reward-deficiency-syndrome-rds
#2
Kenneth Blum, Marcelo Febo, Lyle Fried, David Baron, Eric R Braverman, Kristina Dushaj, Mona Li, Zsolt Demetrovics, Rajendra D Badgaiyan
We are faced with a worldwide opiate/opioid epidemic that is devastating. According to the Centers for Disease Control and Prevention (CDC), at least 127 people, young and old, are dying every day in America due to narcotic overdose. The Food and Drug Administration (FDA) has approved Medication-Assisted Treatments (MATs) for opiate/opioids as well as alcohol and nicotine. The mechanism of action of most MATS favors either blocking of dopaminergic function or a form of Opiate Substitution Therapy (OST). These treatment options are adequate for short-term treatment of the symptoms of addiction and harm reduction but fail long-term to deal with the cause or lead to recovery...
2017: Journal of Reward Deficiency Syndrome and Addiction Science
https://www.readbyqxmd.com/read/28798303/understanding-the-molecular-basis-of-agonist-antagonist-mechanism-of-human-mu-opioid-receptor-through-gaussian-accelerated-molecular-dynamics-method
#3
Yeng-Tseng Wang, Yang-Hsiang Chan
The most powerful analgesic and addictive properties of opiate alkaloids are mediated by the μ opioid receptor (MOR). The MOR has been extensively investigated as a drug target in the twentieth century, with numerous compounds of varying efficacy being identified. We employed molecular dynamics and Gaussian accelerated molecular dynamics techniques to identify the binding mechanisms of MORs to BU72 (agonist) and β-funaltrexamine (antagonist). Our approach theoretically suggests that the 34 residues (Lys209-Phe221 and Ile301-Cys321) of the MORs were the key regions enabling the two compounds to bind to the active site of the MORs...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28792290/pearls-and-pitfalls-for-prescribing-opioids-in-a-climate-of-increased-provider-scrutiny
#4
Joanna Gedzior, Arlen Kwong
In August 2016, U.S. Surgeon General Vivek Murthy, MD, MBA, issued a letter to healthcare providers requesting aid in addressing "an urgent health crisis facing America: the opioid epidemic." In this article, we address some of the more poignant challenges that surface in treating patients with opiate addiction. We provide an outline of recommendations from the leading medical organizations to educate primary care providers on how to navigate patients to decreased or discontinued medication loads.
March 2017: International Journal of Psychiatry in Medicine
https://www.readbyqxmd.com/read/28776146/a-focused-addiction-curriculum-and-its-impact-on-student-knowledge-attitudes-and-confidence-in-the-treatment-of-patients-with-substance-use
#5
Robert J Feeley, David T Moore, Kirsten Wilkins, Brian Fuehrlein
BACKGROUND: Assessment of attitudes towards addiction in medical students has largely gone unexplored. This study examines the impact of a supplemental substance use disorder curriculum in the psychiatry clerkship on medical student attitudes towards addiction. METHODS: The curriculum was only administered to students at one clerkship site. Subsequently, medical students were surveyed across all sites regarding their attitudes towards addiction. RESULTS: The survey response rate was 37...
August 3, 2017: Academic Psychiatry
https://www.readbyqxmd.com/read/28768409/opiates-and-plasticity-in-the-ventral-tegmental-area
#6
Ludovic D Langlois, Fereshteh S Nugent
Opioids are among the most effective pain relievers; however, their abuse has been on the rise worldwide evident from an alarming increase in accidental opioid overdoses. This demands for an urgent increase in scientific endeavors for better understanding of main cellular mechanisms and circuits involved in opiate addiction. Preclinical studies strongly suggest that memories associated with positive and negative opioid experiences are critical in promoting compulsive opiate-seeking and opiate-taking behaviors, and relapse...
August 16, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28765624/metacognitive-deficiency-in-a-perceptual-but-not-a-memory-task-in-methadone-maintenance-patients
#7
Saeedeh Sadeghi, Hamed Ekhtiari, Bahador Bahrami, Majid Nili Ahmadabadi
Drug addiction has been associated with lack of insight into one's own abilities. However, the scope of metacognition impairment among drug users in general and opiate dependent individuals in particular is not fully understood. Investigating the impairments of metacognitive ability in Substance Dependent Individuals (SDIs) in different cognitive tasks could contribute to the ongoing debate over whether metacognition has domain-general or domain-specific neural substrates. We compared metacognitive self-monitoring ability of a group of SDIs during methadone maintenance treatment (n = 23) with a control group (n = 24) in a memory and a visual perceptual task...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28734637/-asthma-and-heroin-use
#8
Michel Underner, Jean Perriot, Gérard Peiffer, Nematollah Jaafari
INTRODUCTION: Heroin use can be responsible for many respiratory complications including asthma. OBJECTIVES: Systematic literature review of data on asthma in heroin users. DOCUMENTARY SOURCES: Medline(®), on the period 1980-2017 with the following keywords: keywords: "asthma" or "bronchospasm" and "heroin" or "opiate" or "opiates", limits "title/abstract"; the selected languages were English or French. Among 97 articles, 67 abstracts have given use to a dual reading to select 23 studies...
July 19, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28732503/opium-trade-and-the-spread-of-hiv-in-the-golden-crescent
#9
REVIEW
Syeda Ayesha Farooq, Mohammad Hafiz Rasooly, Syed Hani Abidi, Kayvon Modjarrad, Syed Ali
The Golden Crescent region of South Asia-comprising Afghanistan, Iran, and Pakistan-is a principal global site for opium production and distribution. Over the past few decades, war, terrorism, and a shifting political landscape have facilitated an active heroin trade throughout the region. Protracted conflict has exacerbated already dire socio-economic conditions and political strife within the region and contributed to a consequent rise in opiate trafficking and addiction among the region's inhabitants. The worsening epidemic of injection drug use has paralleled the rising incidence of HIV and other blood-borne infections in the region and drawn attention to the broader implications of the growing opiate trade in the Golden Crescent...
July 21, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28720620/in-this-issue-opiates-tobacco-social-determinants-of-health-social-accountability-for-non-profit-hospitals-more-on-pcmh-and-clinical-topics
#10
EDITORIAL
Marjorie A Bowman, Anne Victoria Neale, Dean A Seehusen
This issue contains several articles about the factors contributing to the complex and deadly interplay between social determinants of health, pain, mental illness, and addictive substances such as opioids and tobacco. One article clearly is a call to action: more than half of opioid prescriptions in the United States are given to patients with mental health problems. Two articles report work on the next steps for social determinants of health in health care settings. Social accountability based on community health needs assessments required of community hospitals should lead to the creation of more family medicine residency positions...
July 2017: Journal of the American Board of Family Medicine: JABFM
https://www.readbyqxmd.com/read/28697914/introduction-the-specter-of-opiate-addiction-in-reproductive-medicine
#11
William D Schlaff
The alarming trend in opiate misuse in developed countries is prompting an increasingly strident public call for action. Although many in our field have assumed that this building crisis does not really affect us or our patients, data show that the emerging demographic at highest risk for misusing opiates clearly includes patients who seek care in our practices. The goals of this Views and Reviews are to provide a clear understanding of emerging trends in opiate misuse, to review the impact of opiates on the reproductive axis, and to suggest practical recommendations aimed at both mitigating iatrogenic influences on promoting misuse and developing treatment frameworks when misuse is suspected or identified...
July 8, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28690668/white-opioids-pharmaceutical-race-and-the-war-on-drugs-that-wasn-t
#12
Julie Netherland, Helena Hansen
The US 'War on Drugs' has had a profound role in reinforcing racial hierarchies. Although Black Americans are no more likely than Whites to use illicit drugs, they are 6-10 times more likely to be incarcerated for drug offenses. Meanwhile, a very different system for responding to the drug use of Whites has emerged. This article uses the recent history of White opioids - the synthetic opiates such as OxyContin(®) that gained notoriety starting in the 1990s in connection with epidemic prescription medication abuse among White, suburban and rural Americans and Suboxone(®) that came on the market as an addiction treatment in the 2000s - to show how American drug policy is racialized, using the lesser known lens of decriminalized White drugs...
June 2017: BioSocieties
https://www.readbyqxmd.com/read/28688295/contingency-management-interventions-for-non-prescribed-drug-use-during-treatment-for-opiate-addiction-a-systematic-review-and-meta-analysis
#13
REVIEW
Tom S Ainscough, Ann McNeill, John Strang, Robert Calder, Leonie S Brose
BACKGROUND AND AIMS: Use of non-prescribed drugs during treatment for opiate addiction reduces treatment success, creating a need for effective interventions. This review aimed to assess the efficacy of contingency management, a behavioural treatment that uses rewards to encourage desired behaviours, for treating non-prescribed drug use during opiate addiction treatment. METHODS: A systematic search of the databases Embase, PsychInfo, PsychArticles and Medline from inception to March 2015 was performed...
June 24, 2017: Drug and Alcohol Dependence
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
#14
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/28656735/an-analysis-of-genetic-association-in-opioid-dependence-susceptibility
#15
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/28642642/access-to-and-payment-for-office-based-buprenorphine-treatment-in-ohio
#16
Theodore V Parran, Joseph Z Muller, Elina Chernyak, Chris Adelman, Christina M Delos Reyes, Douglas Rowland, Mykola Kolganov
IMPORTANCE: Office-based opiate agonist therapy has dramatically expanded access to medication-assisted treatment over the past decade but has also led to increased buprenorphine diversion. OBJECTIVE: Our study sought to characterize physicians who participate in office-based therapy (OBT) to assess patient access to OBT in Ohio 10 years after its introduction. DESIGN/SETTING/PARTICIPANTS: Cross-sectional telephone survey of Drug Addiction Treatment Act-waivered physicians in Ohio listed by the Center for Substance Abuse Treatment (CSAT)...
2017: Substance Abuse: Research and Treatment
https://www.readbyqxmd.com/read/28631421/impact-of-synthetic-cannabinoids-on-the-duration-of-opioid-related-withdrawal-and-craving-among-patients-of-addiction-clinics-in-kazakhstan-a-prospective-case-control-study
#17
Mariya Prilutskaya, Francesco Saverio Bersani, Ornella Corazza, Sergey Molchanov
OBJECTIVE: The aim of the study was to prospectively assess whether regular use of synthetic cannabinoids (SCs) affects the duration of opioid-related withdrawal and craving symptoms in patients undergoing drug detoxification treatments. METHODS: Patients (n = 193) with opioid use disorder, among which 47 patients are regularly using SCs, underwent integrated drug detoxification therapies. The Clinical Opiate Withdrawal Scale and a specific visual analogue scale were used to assess opioid withdrawal and craving symptoms over time...
May 2017: Human 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
#18
Weisheng 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...
July 26, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28618002/novel-psychoactive-substance-use-among-treatment-seeking-opiate-users-the-role-of-life-events-and-psychiatric-symptoms
#19
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/28611691/morphine-reward-promotes-cue-sensitive-learning-implication-of-dorsal-striatal-creb-activity
#20
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
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