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https://www.readbyqxmd.com/read/28108358/neurochemical-and-metabolic-effects-of-acute-and-chronic-alcohol-in-the-human-brain-studies-with-positron-emission-tomography
#1
REVIEW
Nora D Volkow, Corinde E Wiers, Ehsan Shokri-Kojori, Dardo Tomasi, Gene-Jack Wang, Ruben Baler
The use of Positron emission tomography (PET) to study the effects of acute and chronic alcohol on the human brain has enhanced our understanding of the mechanisms underlying alcohol's rewarding effects, the neuroadaptations from chronic exposure that contribute to tolerance and withdrawal, and the changes in fronto-striatal circuits that lead to loss of control and enhanced motivation to drink that characterize alcohol use disorders (AUD). These include studies showing that alcohol's reinforcing effects may result not only from its enhancement of dopaminergic, GABAergic and opioid signaling but also from its caloric properties...
January 17, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28108179/symptomatic-treatment-of-cough-among-adult-patients-with-lung-cancer-chest-guidelines-and-expert-panel-report
#2
Alex Molassiotis, Jaclyn A Smith, Peter Mazzone, Fiona Blackhall, Richard S Irwin
BACKGROUND: Cough among patients with lung cancer is a common but often undertreated symptom. We have used a recent Cochrane systematic review, among other sources of evidence, to update the recommendations and suggestions of the CHEST 2006 guideline on this topic. METHODS: The American College of Chest Physicians (CHEST) methodologic guidelines and the Grading of Recommendations, Assessment, Development, and Evaluation framework were used. The Expert Cough Panel based their recommendations on data from the Cochrane systematic review on the topic, uncontrolled studies, case studies, and the clinical context...
January 17, 2017: Chest
https://www.readbyqxmd.com/read/28107824/implementation-of-methadone-therapy-for-opioid-use-disorder-in-russia-a-modeled-cost-effectiveness-analysis
#3
Bulat Idrisov, Sean M Murphy, Tyler Morrill, Mayada Saadoun, Karsten Lunze, Donald Shepard
BACKGROUND: Opioid agonist therapy using methadone, an effective treatment of opioid use disorders (OUD) for people who inject drugs (PWID), is recommended by the World Health Organization as essential to curtail the growing HIV epidemic. Yet, despite increasing prevalence of OUD and HIV, methadone therapy has not yet been implemented in Russia. The aim of this modeling study was to estimate the cost-effectiveness of methadone therapy for Russian adults with a diagnosed OUD. METHODS/DESIGN: We modeled the projected program implementation costs and estimated disability-adjusted life years (DALYs) averted over a 10-year period, associated with the provision of methadone therapy for a hypothetical, unreplenished cohort of Russian adults with an OUD (n = 249,000), in comparison to the current therapies at existing addiction treatment facilities...
January 20, 2017: Substance Abuse Treatment, Prevention, and Policy
https://www.readbyqxmd.com/read/28107783/lorcaserin-suppresses-oxycodone-self-administration-and-relapse-vulnerability-in-rats
#4
Harshini Neelakantan, Erica D Holliday, Robert G Fox, Sonja J Stutz, Sandra D Comer, Margaret Haney, Noelle C Anastasio, Frederick Gerard Moeller, Kathryn A Cunningham
Opioid use disorder (OUD) is a major public health problem. High relapse rates and poor treatment retention continue to pose major challenges in OUD treatment. Of the abused opioids, oxycodone is well described to maintain self-administration and evoke the durable conditioned responses ("cue reactivity") that result from pairing of opioid-related stimuli (e.g., paraphernalia) with repeated abuse. Serotonin (5-HT) neurotransmission, particularly through the 5-HT2C receptor (5-HT2CR), regulates psychostimulant reward and cue reactivity, and in the present experiments, we investigated the hypothesis that the selective 5-HT2CR agonist lorcaserin, which is FDA-approved for the treatment of obesity, will suppress oxycodone self-administration and oxycodone-associated cue reactivity in rats...
January 20, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28107753/role-of-central-opioid-on-the-antinociceptive-effect-of-sulfated-polysaccharide-from-the-red-seaweed-solieria-filiformis-in-induced-temporomandibular-joint-pain
#5
Ianna Wivianne Fernandes Araújo, Hellíada Vasconcelos Chaves, José Mário Pachêco, Danielle Rocha Val, Lorena Vasconcelos Vieira, Rodrigo Santos, Raul Sousa Freitas, Renata Line Rivanor, Valdécio Silvano Monteiro, Juliana Trindade Clemente-Napimoga, Mirna Marques Bezerra, Norma Maria Barros Benevides
This study aimed to investigate the effect of sulfated polysaccharide from red seaweed Solieria filiformis (Fraction F II) in the inflammatory hypernociception in the temporomandibular joint (TMJ) of rats. Male Wistar rats were pretreated (30min) with a subcutaneous injection (s.c.) of vehicle or FII (0.03, 0.3 or 3.0mg/kg) followed by intra-TMJ injection of 1.5% Formalin or 5-hydroxytryptamine (5-HT, 225μg/TMJ). In other set of experiments rats were pretreated (15min) with an intrathecal injection of the non-selective opioid receptors Naloxone, or μ-opioid receptor antagonist CTOP, or δ-opioid receptor Naltridole hydrochloride, or κ-opioid receptor antagonist Nor-Binaltorphimine (Nor-BNI) followed by injection of FII (s...
January 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28107680/a-randomized-clinical-trial-of-buprenorphine-for-prisoners-findings-at-12-months-post-release
#6
Michael S Gordon, Timothy W Kinlock, Robert P Schwartz, Kevin E O'Grady, Terrence T Fitzgerald, Frank J Vocci
BACKGROUND: This study examined whether starting buprenorphine treatment prior to prison and after release from prison would be associated with better drug treatment outcomes and whether males and females responded differently to the combination of in-prison treatment and post-release service setting. METHODS: Study design was a 2 (In-Prison Treatment: Condition: Buprenorphine Treatment: vs. Counseling Only)×2 [Post-Release Service Setting Condition: Opioid Treatment: Program (OTP) vs...
January 11, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28107580/non-buprenorphine-opioid-utilization-among-patients-using-buprenorphine
#7
Matthew Daubresse, Brendan Saloner, Harold A Pollack, G Caleb Alexander
BACKGROUND AND AIMS: Buprenorphine is commonly used to treat opioid use disorder, however, non-buprenorphine prescription opioid use among these patients is not well defined. We sought to estimate the prevalence of non-buprenorphine opioid use among incident buprenorphine users and quantify levels of opioid use prior to, during and after the first treatment episode. DESIGN: We used QuintilesIMS anonymized, individual-level, all-payer pharmacy claims to identify incident users of buprenorphine between January 2010 through July 2012 from a large cohort of approximately 50 million patients filling two or more prescriptions for any opioid during any calendar year between 2006 and 2013 in eleven states of interest...
January 20, 2017: Addiction
https://www.readbyqxmd.com/read/28107210/treatment-outcome-comparison-between-telepsychiatry-and-face-to-face-buprenorphine-medication-assisted-treatment-for-opioid-use-disorder-a-2-year-retrospective-data-analysis
#8
Wanhong Zheng, Michael Nickasch, Laura Lander, Sijin Wen, Minchan Xiao, Patrick Marshalek, Ebony Dix, Carl Sullivan
OBJECTIVES: To retrospectively review clinic records to assess the difference between face-to-face and telepsychiatry buprenorphine medication-assisted treatment (MAT) programs for the treatment of opioid use disorder on 3 outcomes: additional substance use, average time to achieve 30 and 90 consecutive days of abstinence, and treatment retention rates at 90 and 365 days. METHODS: Medical records of patients (N = 100) who were participating in telepsychiatry and in face-to-face group-based outpatient buprenorphine MAT programs were reviewed and assessed using descriptive statistical analysis...
January 19, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28106092/pharmacological-characterisation-of-the-highly-nav1-7-selective-spider-venom-peptide-pn3a
#9
Jennifer R Deuis, Zoltan Dekan, Joshua S Wingerd, Jennifer J Smith, Nehan R Munasinghe, Rebecca F Bhola, Wendy L Imlach, Volker Herzig, David A Armstrong, K Johan Rosengren, Frank Bosmans, Stephen G Waxman, Sulayman D Dib-Hajj, Pierre Escoubas, Michael S Minett, Macdonald J Christie, Glenn F King, Paul F Alewood, Richard J Lewis, John N Wood, Irina Vetter
Human genetic studies have implicated the voltage-gated sodium channel NaV1.7 as a therapeutic target for the treatment of pain. A novel peptide, μ-theraphotoxin-Pn3a, isolated from venom of the tarantula Pamphobeteus nigricolor, potently inhibits NaV1.7 (IC50 0.9 nM) with at least 40-1000-fold selectivity over all other NaV subtypes. Despite on-target activity in small-diameter dorsal root ganglia, spinal slices, and in a mouse model of pain induced by NaV1.7 activation, Pn3a alone displayed no analgesic activity in formalin-, carrageenan- or FCA-induced pain in rodents when administered systemically...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105331/opioid-system-in-l-dopa-induced-dyskinesia
#10
REVIEW
Jing Pan, Huaibin Cai
L-3, 4-Dihydroxyphenylalanine (L-DOPA)-induced dyskinesia (LID) is a major clinical complication in the treatment of Parkinson's disease (PD). This debilitating side effect likely reflects aberrant compensatory responses for a combination of dopaminergic neuron denervation and repeated L-DOPA administration. Abnormal endogenous opioid signal transduction pathways in basal ganglia have been well documented in LID. Opioid receptors have been targeted to alleviate the dyskinesia. However, the exact role of this altered opioid activity is remains under active investigation...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28105279/nanoconjugated-nap-as-a-potent-and-periphery-selective-mu-opioid-receptor-modulator-to-treat-opioid-induced-constipation
#11
Guoyan G Xu, Olga Yu Zolotarskaya, Dwight A Williams, Yunyun Yuan, Dana E Selley, William L Dewey, Hamid I Akbarali, Hu Yang, Yan Zhang
Opioids are the mainstay for cancer and noncancer pain management. However, their use is often associated with multiple adverse effects. Among them, the most common and persistent one is probably opioid-induced constipation (OIC). Periphery selective opioid antagonists may alleviate the symptoms of OIC without compromising the analgesic effects of opioids. Recently our laboratories have identified one novel lead compound, 17-cyclopropylmethyl-3,14β-dihydroxy-4,5α-epoxy-6β-[(4'-pyridyl)acetamido]morphinan (NAP), as a peripherally selective mu opioid receptor ligand carrying subnanomolar affinity to the mu opioid receptor and over 100-folds of selectivity over both the delta and kappa opioid receptors, with reasonable oral availability and half-life, and potential to treat OIC...
January 12, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28104434/effects-of-human-opiorphin-on-food-intake-and-water-intake-in-mice-following-central-administration
#12
Yong Chen, Xiao-Zhu Tian, Lu Bai, Ze-Qi Liu, Xing-Peng Xiao, Pu Liu, Xiang-Kai Li
Human opiorphin, plays important pharmacological functions in rats or mice. The present study was performed to investigate effects and underlying mechanism of central injected opiorphin on food intake and water intake in mice. Intracerebroventricularly (i.c.v.) administered opiorphin (5-20μg/kg) dose-dependently suppressed food intake in fasted mice, but had no influence on food intake in freely feeding mice. The cumulative food intake was significantly decreased at 60min after injection of 10 and 20μg/kg opiorphin and the food intake was significantly reduced during the 20-60min period after treatment...
January 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28103892/prehospital-intravenous-fentanyl-to-patients-with-hip-fracture-an-observational-cohort-study-of-risk-factors-for-analgesic-non-treatment
#13
Kristian D Friesgaard, Erika F Christensen, Hans Kirkegaard, Mette D Bendtsen, Flemming B Jensen, Lone Nikolajsen
BACKGROUND: Patients with proximal femoral neck fracture have a high short-term mortality, a high risk of postoperative complications, and impaired quality of life. One of the challenges related to the prehospital treatment of these patients is to administer systemic opioids fast and properly. Effective analgesic prehospital treatment ought be initiated rapidly in order to alleviate the stress that follows acute pain, to facilitate transportation, and to improve quality of care. The objectives of this study were to explore the prevalence of prehospital administration of intravenous fentanyl to patients with proximal femoral neck fracture in the ambulances and to assess risk factors for analgesic non-treatment...
January 19, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28103434/analgesic-effect-of-quetiapine-in-a-mouse-model-of-cancer-induced-bone-pain
#14
Mi Hwa Heo, Jin Young Kim, Ilseon Hwang, Eunyoung Ha, Keon Uk Park
Background/Aims: Cancer-induced bone pain (CIBP) is one of the most common pains in patients with advanced neoplasms. Because of treatment-associated side effects, more than half of cancer patients are reported to have inadequate and undermanaged pain control. New mechanism-based therapies must be developed to reduce cancer pain. Quetiapine is a commonly used atypical antipsychotic drug. We report a study of the potential analgesic effects of quetiapine in a mouse model of CIBP and examine the mechanism of bone pain by analyzing the expression of various nociceptors...
January 20, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28101968/defined-daily-doses-ddd-do-not-accurately-reflect-opioid-doses-used-in-contemporary-chronic-pain-treatment
#15
Suzanne Nielsen, Natasa Gisev, Raimondo Bruno, Wayne Hall, Milton Cohen, Briony Larance, Gabrielle Campbell, Marian Shanahan, Fiona Blyth, Nicholas Lintzeris, Sallie Pearson, Richard Mattick, Louisa Degenhardt
OBJECTIVE: To assess how well the defined daily dose (DDD) metric reflects opioid utilisation among chronic non-cancer pain patients. DESIGN: Descriptive, cross-sectional study, utilising a 7-day medication diary. SETTING: Community-based treatment settings, Australia. SUBJECTS: A sample of 1101 people prescribed opioids for chronic non-cancer pain. METHODS: Opioid dose data was collected via a self-completed 7-day medication diary capturing names, strengths and doses of each medication taken in the past week...
January 19, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28099791/mitigating-the-prescription-drug-abuse-epidemic
#16
Mike Midgley
Focused attention on the prescription drug abuse epidemic needs to include evidence-based training for clinicians who manage patients with pain to facilitate accurate screening with consideration of comorbid conditions, diagnosis, selection of the appropriate treatment regimen, and focused monitoring of adherence to the established course of therapy. DEA licensure requirements need to be amended to mandate targeted training focused on pain medication upon initial application and renewal of license. A nationwide mandated real-time dispenser database that requires verification every time a clinician prescribes opioids and other key controlled substances should be a top priority...
January 2017: Journal of Healthcare Risk Management: the Journal of the American Society for Healthcare Risk Management
https://www.readbyqxmd.com/read/28093646/mechanisms-of-inhibitory-action-of-trk-130-naltalimide-a-%C3%AE-opioid-receptor-partial-agonist-on-the-micturition-reflex
#17
Morihiro Fujimura, Naoki Izumimoto, Sayoko Kanie, Ryosuke Kobayashi, Satoru Yoshikawa, Shinobu Momen, Mikito Hirakata, Toshikazu Komagata, Satoshi Okanishi, Masashi Iwata, Tadatoshi Hashimoto, Takayuki Doi, Naoki Yoshimura, Koji Kawai
PURPOSE: To clarify the mechanism of inhibitory action of TRK-130 (Naltalimide), a unique µ-opioid receptor partial agonist, on the micturition reflex. METHODS: The effect of TRK-130 on isovolumetric rhythmic bladder contractions (RBCs) was examined in guinea pigs, the effect of which was clarified by co-treatment with naloxone or in spinal cord transection. The effect of TRK-130 on urodynamic parameters was also observed in guinea pigs. In addition, the effect of TRK-130 on bladder contraction induced by peripheral stimulation of the pelvic nerve was investigated in rats...
January 16, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28092651/long-lasting-antinociceptive-effects-of-green-light-in-acute-and-chronic-pain-in-rats
#18
Mohab M Ibrahim, Amol Patwardhan, Kerry B Gilbraith, Aubin Moutal, Xiaofang Yang, Lindsey A Chew, Tally Largent-Milnes, T Philip Malan, Todd W Vanderah, Frank Porreca, Rajesh Khanna
Treatments for chronic pain are inadequate, and new options are needed. Nonpharmaceutical approaches are especially attractive with many potential advantages including safety. Light therapy has been suggested to be beneficial in certain medical conditions such as depression, but this approach remains to be explored for modulation of pain. We investigated the effects of light-emitting diodes (LEDs), in the visible spectrum, on acute sensory thresholds in naive rats as well as in experimental neuropathic pain...
February 2017: Pain
https://www.readbyqxmd.com/read/28092649/new-onset-depression-following-stable-slow-and-rapid-rate-of-prescription-opioid-dose-escalation
#19
Joanne Salas, Jeffrey F Scherrer, Frank David Schneider, Mark D Sullivan, Kathleen K Bucholz, Thomas Burroughs, Laurel A Copeland, Brian K Ahmedani, Patrick J Lustman
Recent studies suggest that longer durations of opioid use, independent of maximum morphine equivalent dose (MED) achieved, is associated with increased risk of new-onset depression (NOD). Conversely, other studies, not accounting for duration, found that higher MED increased probability of depressive symptoms. To determine whether rate of MED increase is associated with NOD, a retrospective cohort analysis of Veterans Health Administration data (2000-2012) was conducted. Eligible patients were new, chronic (>90 days) opioid users, aged 18 to 80, and without depression diagnoses for 2 years before start of follow-up (n = 7051)...
February 2017: Pain
https://www.readbyqxmd.com/read/28092646/ex-vivo-nonviral-gene-delivery-of-%C3%AE-opioid-receptor-to-attenuate-cancer-induced-pain
#20
Seiichi Yamano, Chi T Viet, Dongmin Dang, Jisen Dai, Shigeru Hanatani, Tadahiro Takayama, Hironori Kasai, Kentaro Imamura, Ron Campbell, Yi Ye, John C Dolan, William Myung Kwon, Stefan D Schneider, Brian L Schmidt
Virus-mediated gene delivery shows promise for the treatment of chronic pain. However, viral vectors have cytotoxicity. To avoid toxicities and limitations of virus-mediated gene delivery, we developed a novel nonviral hybrid vector: HIV-1 Tat peptide sequence modified with histidine and cysteine residues combined with a cationic lipid. The vector has high transfection efficiency with little cytotoxicity in cancer cell lines including HSC-3 (human tongue squamous cell carcinoma) and exhibits differential expression in HSC-3 (∼45-fold) relative to HGF-1 (human gingival fibroblasts) cells...
February 2017: Pain
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