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https://www.readbyqxmd.com/read/28345528/genetic-and-psychosocial-factors-for-benzodiazepine-addiction-an-analysis-based-on-the-results-of-the-authors-own-research-conducted-in-a-group-of-benzodiazepine-addicted-and-non-addicted-individuals
#1
Anna Konopka, Monika Mak, Anna Grzywacz, Sławomir Murawiec, Jerzy Samochowiec
PURPOSE: In spite of the fact that the addictive potential of benzodiazepine (BDZ) drugs has been known for a long time, benzodiazepine addiction remains a common problem for psychiatry to deal with. The etiology of benzodiazepine addiction is very complex. Among the risk factors, the course of the treatment, demographic status and psychological features of a patient seem to play an important role. The aim of this study was to investigate both psychological and genetic factors differentiating benzodiazepine addicts from non-addicted users...
March 13, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28343167/the-unappreciated-roles-of-the-cholecystokinin-receptor-cck-1-in-brain-functioning
#2
Santiago Ballaz
The CCK(1) receptor is a G-protein-coupled receptor activated by the sulfated forms of cholecystokinin (CCK), a gastrin-like peptide released in the gastrointestinal tract and mammal brain. A substantial body of research supports the hypothesis that CCK(1)r stimulates gallbladder contraction and pancreatic secretion in the gut, as well as satiety in brain. However, this receptor may also fulfill relevant roles in behavior, thanks to its widespread distribution in the brain. The strategic location of CCK(1)r in mesolimbic structures and specific hypothalamic and brainstem nuclei lead to complex interactions with neurotransmitters like dopamine, serotonin, and glutamate, as well as hypothalamic hormones and neuropeptides...
March 25, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28340145/human-abuse-potential-of-the-new-opioid-analgesic-molecule-nktr-181-compared-with-oxycodone
#3
Lynn Webster, Jack Henningfield, August R Buchhalter, Suresh Siddhanti, Lin Lu, Aleksandrs Odinecs, Carlo J Di Fonzo, Michael A Eldon
Objective.:  Evaluate the human abuse potential, pharmacokinetics, pharmacodynamics, and safety of NKTR-181, a novel mu-opioid agonist molecule, relative to oxycodone. Design.:  This randomized, single-center, double-blind, active- and placebo-controlled five-period crossover study enrolled healthy, adult, non-physically dependent recreational opioid users. Setting.:  Inpatient clinical research site. Subjects. : Forty-two randomized subjects (73...
March 10, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339890/pennsylvania-state-core-competencies-for-education-on-opioids-and-addiction
#4
Michael A Ashburn, Rachel L Levine
Objective.:  The objective of this project was to develop core competencies for education on opioids and addiction to be used in all Pennsylvania medical schools. Methods.:  The Pennsylvania Physician General created a task force that was responsible for the creation of the core competencies. A literature review was completed, and a survey of graduating medical students was conducted. The task force then developed, reviewed, and approved the core competencies...
March 2, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339662/hiv-1-proteins-influence-novelty-seeking-behavior-and-alter-region-specific-transcriptional-responses-to-chronic-nicotine-treatment-in-hiv-1tg-rats
#5
Zhongli Yang, Tanseli Nesil, Taylor Wingo, Sulie L Chang, Ming D Li
Introduction: Clinical studies suggest that HIV-1-infected patients are more likely to use or abuse addictive drugs than is the general population. We hypothesized that HIV-1 proteins impact novelty-seeking behavior and enhance the transcriptional response to nicotine in genes implicated in both novelty-seeking behavior and drug addiction. Methods: We assessed the effects of HIV-1 proteins on novelty-seeking behavior by comparing baseline activity differences of HIV-1Tg and F344 control rats in the open-field test...
February 17, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28339586/framing-tobacco-dependence-as-a-brain-disease-implications-for-policy-and-practice
#6
Kylie Morphett, Adrian Carter, Wayne Hall, Coral Gartner
Introduction: Like other forms of drug dependence, tobacco dependence is increasingly being described as a "chronic brain disease." The potential consequences of this medical labelling have been examined in relation to other addictions, but the implications for tobacco control have been neglected. Some have posited that biomedical conceptions of addiction will reduce stigma and increase uptake of efficacious treatments. Others have countered that it could increase stigma, reduce treatment seeking, and deter unassisted quitting...
January 21, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28326026/pre-clinical-studies-with-d-penicillamine-as-a-novel-pharmacological-strategy-to-treat-alcoholism-updated-evidences
#7
REVIEW
Alejandro Orrico, Lucía Martí-Prats, María J Cano-Cebrián, Luis Granero, Ana Polache, Teodoro Zornoza
Ethanol, as other drugs of abuse, is able to activate the ventral tegmental area dopamine (VTA-DA) neurons leading to positively motivational alcohol-seeking behavior and use, and, ultimately to ethanol addiction. In the last decades, the involvement of brain-derived acetaldehyde (ACD) in the ethanol actions in the mesolimbic pathway has been widely demonstrated. Consistent published results have provided a mechanistic support to the use of ACD inactivating agents to block the motivational and reinforcing properties of ethanol...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28325710/no-evidence-of-compensatory-drug-use-risk-behavior-among-heroin-users-after-receiving-take-home-naloxone
#8
Jermaine D Jones, Aimee Campbell, Verena E Metz, Sandra D Comer
INTRODUCTION: Some fear that distribution of naloxone to persons at risk of experiencing an opioid overdose may reduce the perceived negative consequences of drug use, leading to riskier patterns of use. This study assessed whether participation in naloxone/overdose training altered drug use frequency, quantity or severity among heroin users in and out of treatment. METHODS: Clinical interviews were performed assessing patterns of heroin and other drug use prior to, and at multiple timepoints after overdose education and naloxone training...
March 9, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28324627/hospitalized-opioid-dependent-patients-exploring-predictors-of-buprenorphine-treatment-entry-and-retention-after-discharge
#9
Christina S Lee, Jane M Liebschutz, Bradley J Anderson, Michael D Stein
OBJECTIVES: Few studies have explored predictors of entry into and retention in buprenorphine treatment following linkage from an acute medical hospitalization. METHODS: This secondary analysis of a completed clinical trial focuses on medically hospitalized, opioid-dependent patients (n = 72) who were randomized to an intervention including buprenorphine induction and dose stabilization during hospitalization followed by post-discharge transition to office-based buprenorphine treatment (OBOT)...
March 21, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28324454/reward-circuitry-in-addiction
#10
REVIEW
Sarah Cooper, A J Robison, Michelle S Mazei-Robison
Understanding the brain circuitry that underlies reward is critical to improve treatment for many common health issues, including obesity, depression, and addiction. Here we focus on insights into the organization and function of reward circuitry and its synaptic and structural adaptations in response to cocaine exposure. While the importance of certain circuits, such as the mesocorticolimbic dopamine pathway, are well established in drug reward, recent studies using genetics-based tools have revealed functional changes throughout the reward circuitry that contribute to different facets of addiction, such as relapse and craving...
March 21, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28323538/relationships-between-a-dissociative-subtype-of-ptsd-and-clinical-characteristics-in-patients-with-substance-use-disorders
#11
Michaela Mergler, Martin Driessen, Ursula Havemann-Reinecke, Dirk Wedekind, Christel Lüdecke, Martin Ohlmeier, Claudia Chodzinski, Sybille Teunißen, Steffen Weirich, Detlef Schläfke, Walter Renner, Ingo Schäfer, Gertrud Koesters, Christian Dette, Olaf Reis, Elisabeth H Sylvester, Martin Hoppe, Markus Stuppe, Thomas Broese, Udo Schneider, Christina Pletke
The increasing support for a dissociative subtype of post-traumatic stress disorder (PTSD-D) has led to its inclusion in DSM-5. We examined relationships between PTSD-D and relevant variables in patients with substance use disorders (SUD). The sample comprised N = 459 patients with SUD. The International Diagnostic Checklist and the Posttraumatic Diagnostic Scale were used to diagnose PTSD. In addition, participants completed the Childhood Trauma Questionnaire and the Dissociative Experiences Scale. The course of SUD was assessed by means of the European Addiction Severity Index...
March 21, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28323108/chronic-methamphetamine-exposure-significantly-decreases-microglia-activation-in-the-arcuate-nucleus
#12
Steven A Lloyd, Beau Corkill, Matthew C Bruster, Rick L Roberts, Ryan A Shanks
Methamphetamine is a powerful psychostimulant drug and its use and abuse necessitates a better understanding of its neurobiobehavioral effects. The acute effects of binge dosing of methamphetamine on the neurons in the CNS are well studied. However, the long-term effects of chronic, low-dose methamphetamine are less well characterized, especially in other cell types and areas outside of the major dopamine pathways. Mice were administered 5mg/kg/day methamphetamine for ten days and brain tissue was analyzed using histochemistry and image analysis...
March 18, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28322982/toward-biomarkers-of-the-addicted-human-brain-using-neuroimaging-to-predict-relapse-and-sustained-abstinence-in-substance-use-disorder
#13
REVIEW
Scott J Moeller, Martin P Paulus
The ability to predict relapse is a major goal of drug addiction research. Clinical and diagnostic measures are useful in this regard, but these measures do not fully and consistently identify who will relapse and who will remain abstinent. Neuroimaging approaches have the potential to complement these standard clinical measures to optimize relapse prediction. The goal of this review was to survey the existing drug addiction literature that either used a baseline functional or structural neuroimaging phenotype to longitudinally predict a clinical outcome, or that examined test-retest of a neuroimaging phenotype during a course of abstinence or treatment...
March 18, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28319052/a-tail-of-opioid-receptor-variants
#14
Stephanie Puig, Howard B Gutstein
Opioids are the gold-standard treatment for severe pain. However, potentially life-threatening side effects decrease the safety and effectiveness of these compounds. The addiction liability of these drugs has led to the current epidemic of opioid abuse in the US. Extensive research efforts have focused on trying to dissociate the analgesic properties of opioids from their undesirable side effects. Splice variants of the mu opioid receptor (MOR), which mediates opioid actions, have unique pharmacological properties and anatomic distributions that make them attractive candidates for therapeutic pain relief...
March 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28315693/central-glp-1-receptor-activation-modulates-cocaine-evoked-phasic-dopamine-signaling-in-the-nucleus-accumbens-core
#15
Samantha M Fortin, Mitchell F Roitman
Drugs of abuse increase the frequency and magnitude of brief (1-3s), high concentration (phasic) dopamine release events in terminal regions. These are thought to be a critical part of drug reinforcement and ultimately the development of addiction. Recently, metabolic regulatory peptides, including the satiety signal glucagon-like peptide-1 (GLP-1), have been shown to modulate cocaine reward-driven behavior and sustained dopamine levels after cocaine administration. Here, we use fast-scan cyclic voltammetry (FSCV) to explore GLP-1 receptor (GLP-1R) modulation of dynamic dopamine release in the nucleus accumbens (NAc) during cocaine administration...
March 15, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28315272/sigma-receptors-and-substance-use-disorders
#16
Valentina Sabino, Callum Hicks, Pietro Cottone
Thanks to advances in neuroscience, addiction is now recognized as a chronic brain disease with genetic, developmental, and cultural components. Drugs of abuse, including alcohol, are able to produce significant neuroplastic changes responsible for the profound disturbances shown by drug addicted individuals. The current lack of efficacious pharmacological treatments for substance use disorders has encouraged the search for novel and more effective pharmacotherapies. Growing evidence strongly suggests that Sigma Receptors are involved in the addictive and neurotoxic properties of abused drugs, including cocaine , methamphetamine , and alcohol...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28303497/n-acetylcysteine-prevents-alcohol-related-neuroinflammation-in-rats
#17
Ricardo Schneider, Solange Bandiera, Débora Guerini Souza, Bruna Bellaver, Greice Caletti, André Quincozes-Santos, Elaine Elisabetsky, Rosane Gomez
Alcoholism has been characterized as a systemic pro-inflammatory condition and alcohol withdrawal has been linked to various changes in the brain homeostasis, including oxidative stress and glutamate hyperactivity. N-acetylcysteine (NAC) is an anti-inflammatory and antioxidant multi-target drug with promising results in psychiatry, including drug addiction. We assessed the effects of NAC on the serum and brain inflammatory cytokines after cessation of chronic alcohol treatment in rats. Male Wistar rats received 2 g/kg alcohol or vehicle twice a day by oral gavage for 30 days...
March 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28302509/binding-mode-analyses-of-nap-derivatives-as-mu-opioid-receptor-selective-ligands-through-docking-studies-and-molecular-dynamics-simulation
#18
Huiqun Wang, Saheem A Zaidi, Yan Zhang
Mu opioid receptor selective antagonists are highly desirable because of their utility as pharmacological probes for receptor characterization and functional studies. Furthermore, the mu opioid receptors act as an important target in drug abuse and addiction treatment. Previously, we reported NAP as a novel lead compound with high selectivity and affinity towards the mu opioid receptor. Based on NAP, we have synthesized its derivatives and further characterized their binding affinities and selectivity towards the receptor...
March 6, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28302035/translational-multimodality-neuroimaging
#19
Sushil K Sharma
Recently high-resolution, noninvasive, multimodality in-vivo molecular imaging with PET, SPECT, CT and MRI, employing fusion algorithms has revolutionized personalized medicine. However, specific radiopharmaceuticals (RPs) for the accurate diagnosis and effective treatment of progressive neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, drug addiction, and other cognitive impairments still remain in developmental phase. Currently, multimodality fusion neuroimaging is utilized for the determination of: pharmacokinetics and pre-clinical development of radiopharmaceuticals (RPs); in-vivo monitoring of stem cell transplantation therapy; nicotinic acetylcholine receptors (nAChRs) investigations; and regional cerebral blood flow and glucose metabolism in cognitively-impaired subjects employing noninvasive microPET and nano-SPECT imaging...
March 15, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28297025/association-of-stimulant-use-with-dopaminergic-alterations-in-users-of-cocaine-amphetamine-or-methamphetamine-a-systematic-review-and-meta-analysis
#20
Abhishekh H Ashok, Yuya Mizuno, Nora D Volkow, Oliver D Howes
Importance: Stimulant use disorder is common, affecting between 0.3% and 1.1% of the population, and costs more than $85 billion per year globally. There are no licensed treatments to date. Several lines of evidence implicate the dopamine system in the pathogenesis of substance use disorder. Therefore, understanding the nature of dopamine dysfunction seen in stimulant users has the potential to aid the development of new therapeutics. Objective: To comprehensively review the in vivo imaging evidence for dopaminergic alterations in stimulant (cocaine, amphetamine, or methamphetamine) abuse or dependence...
March 15, 2017: JAMA Psychiatry
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