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Pharmacological treatment of addiction

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https://www.readbyqxmd.com/read/28062254/the-effects-of-d-govadine-on-conditioned-place-preference-with-d-amphetamine-or-food-reward
#1
Maya O Nesbit, Carine Dias, Anthony G Phillips
Tetrahydroprotoberberines (THPB) have a high affinity for dopamine (DA) D1 and D2 receptors and may provide a novel treatment for drug addiction. We assessed the effects of the THPB d-govadine on the acquisition, expression, extinction and reinstatement of d-amphetamine-(1.5mg/kg, i.p.) induced conditioned place preference (CPP). Furthermore, the effects of d-govadine on conditioned association between contextual stimuli and a natural reward were examined using food-induced CPP. In separate experiments, rats received d-govadine (0, 0...
January 3, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28052701/potential-for-targeting-dopamine-darpp-32-signaling-in-neuropsychiatric-and-neurodegenerative-disorders
#2
Akinori Nishi, Takahide Shuto
Alterations in dopamine neurotransmission has been implicated in pathophysiology of neuropsychiatric and neurodegenerative disorders, and DARPP-32 plays a pivotal role in dopamine neurotransmission. DARPP-32 likely influences dopamine-mediated behaviors in animal models of neuropsychiatric and neurodegenerative disorders and therapeutic effects of pharmacological treatment. Areas covered: We will review animal studies on the biochemical and behavioral roles of DARPP-32 in drug addiction, schizophrenia and Parkinson's disease...
January 13, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28051841/a-review-of-a-national-training-initiative-to-increase-provider-use-of-mat-to-address-the-opioid-epidemic
#3
REVIEW
Frances R Levin, Adam Bisaga, Maria A Sullivan, Arthur Robin Williams, Kathryn Cates-Wessel
BACKGROUND AND OBJECTIVES: The Providers' Clinical Support System for Medication Assisted Treatment (PCSS-MAT) initiative focuses on training and mentoring health professionals in the treatment of opioid use disorders (OUD) using pharmacological strategies. Led by the American Academy of Addiction Psychiatry (AAAP), PCSS-MAT is a consortium representing four of the five national professional organizations authorized by DATA 2,000-AAAP, American Osteopathic Academy of Addiction Medicine, American Psychiatric Association, and American Society of Addiction Medicine...
December 2016: American Journal on Addictions
https://www.readbyqxmd.com/read/28039543/sigma-receptors-and-alcohol-use-disorders
#4
Valentina Sabino, Pietro Cottone
Although extensive research has focused on understanding the neurobiological mechanisms underlying alcohol addiction, pharmacological treatments for alcohol use disorders are very limited and not always effective. This constraint has encouraged the search for novel pharmacological targets for alcoholism therapy. Sigma receptors were shown to mediate some of the properties of cocaine and amphetamine, which was attributed to the direct binding of psychostimulants to these receptors. More recently, the role of sigma receptors in the rewarding and reinforcing effects of alcohol was also proposed, and it was suggested that their hyperactivity may result in excessive alcohol drinking...
December 31, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28038309/diazepam-inhibits-electrically-evoked-and-tonic-dopamine-release-in-the-nucleus-accumbens-and-reverses-the-effect-of-amphetamine
#5
Alexander Gomez-A, Amanda Maino Fiorenza, Suelen Lucio Boschen, Adam H Sugi, Danielle Beckman, Sergio T Ferreira, Kendall H Lee, Charles D Blaha, Claudio Da Cunha
Diazepam is a benzodiazepine receptor agonist with anxiolytic and addictive properties. Although most drugs of abuse increase dopamine release in the nucleus accumbens, here we show that not only it causes the opposite effect but also prevents amphetamine action on increasing dopamine release. We used 20 min sampling in vivo microdialysis and subsecond fast-scan cyclic voltammetry recordings at carbon-fiber microelectrodes to show that diazepam caused a dose-dependent decrease in tonic and electrically-evoked dopamine release in the nucleus accumbens of urethane anesthetized adult male Swiss mice...
December 30, 2016: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28025974/social-status-in-monkeys-effects-of-social-confrontation-on-brain-function-and-cocaine-self-administration
#6
R W Gould, P W Czoty, L J Porrino, M A Nader
Understanding individual differences in response to social stress and environmental enrichment on brain function and drug abuse may help explain the variability in response to behavioral and pharmacological treatments for drug addiction. In monkeys, social status influences the reinforcing effects of cocaine and the effects of some drugs on cocaine self-administration. In this study, we used male cynomolgus macaques (n=15) living in established social groups to examine the effects of social confrontation on the reinforcing effects of cocaine using a food-drug choice procedure...
December 27, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28008717/pharmacokinetics-tissue-distribution-and-excretion-studies-of-l-isocorypalmine-using-ultra-high-performance-liquid-chromatography-with-tandem-mass-spectrometry
#7
Weihui Wang, Jing Liu, Xiaoning Zhao, Yan Peng, Nannan Wang, David Y W Lee, Ronghua Dai
l-Isocorypalmine is a newly identified metabolite of l-tetrahydropalmatine with a unique dual pharmacological profile as a partial dopamine receptor 1 agonist and dopamine receptor 2 antagonist properties for treating cocaine use disorder. The purpose of this study was to explore the pharmacokinetic profiles, tissue distribution and excretion of l-isocorypalmine in Sprague-Dawley rats. A sensitive and reliable ultra high performance liquid chromatography with tandem mass spectrometry method was developed and validated for determination of l-isocorypalmine in biological samples...
December 23, 2016: Journal of Separation Science
https://www.readbyqxmd.com/read/27983768/association-of-maternal-and-infant-variants-in-pnoc-and-comt-genes-with-neonatal-abstinence-syndrome-severity
#8
Elisha M Wachman, Marie J Hayes, Richard Sherva, Mark S Brown, Hira Shrestha, Beth A Logan, Nicole A Heller, David A Nielsen, Lindsay A Farrer
BACKGROUND AND OBJECTIVES: There is significant variability in severity of neonatal abstinence syndrome (NAS) due to in utero opioid exposure. Our previous study identified single nucleotide polymorphisms (SNPs) in the prepronociceptin (PNOC) and catechol-O-methyltransferase (COMT) genes that were associated with differences in NAS outcomes. This study looks at the same SNPs in PNOC and COMT in an independent cohort in an attempt to replicate previous findings. METHODS: For the replication cohort, full-term opioid-exposed newborns and their mothers (n = 113 pairs) were studied...
January 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/27980118/role-of-taar1-within-the-subregions-of-the-mesocorticolimbic-dopaminergic-system-in-cocaine-seeking-behavior
#9
Jian-Feng Liu, Justin N Siemian, Robert Seaman, Yanan Zhang, Jun-Xu Li
: A novel G-protein coupled receptor, trace amine-associated receptor 1 (TAAR1), has been shown to be a promising target to prevent stimulant relapse. Our recent studies showed that systemic administration of TAAR1 agonists decreased abuse-related behaviors of cocaine. However, the role of TAAR1 in specific subregions of the reward system in drug addiction is unknown. Here, using a local pharmacological activation method, we assessed the role of TAAR1 within the subregions of the mesocorticolimbic system, i...
December 15, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27941799/inhibition-of-notch-pathway-arrests-pten-deficient-advanced-prostate-cancer-by-triggering-p27-driven-cellular-senescence
#10
Ajinkya Revandkar, Maria Luna Perciato, Alberto Toso, Abdullah Alajati, Jingjing Chen, Hermeto Gerber, Mitko Dimitrov, Andrea Rinaldi, Nicolas Delaleu, Emiliano Pasquini, Rocco D'Antuono, Sandra Pinton, Marco Losa, Letizia Gnetti, Alberto Arribas, Patrick Fraering, Francesco Bertoni, Alain Nepveu, Andrea Alimonti
Activation of NOTCH signalling is associated with advanced prostate cancer and treatment resistance in prostate cancer patients. However, the mechanism that drives NOTCH activation in prostate cancer remains still elusive. Moreover, preclinical evidence of the therapeutic efficacy of NOTCH inhibitors in prostate cancer is lacking. Here, we provide evidence that PTEN loss in prostate tumours upregulates the expression of ADAM17, thereby activating NOTCH signalling. Using prostate conditional inactivation of both Pten and Notch1 along with preclinical trials carried out in Pten-null prostate conditional mouse models, we demonstrate that Pten-deficient prostate tumours are addicted to the NOTCH signalling...
December 12, 2016: Nature Communications
https://www.readbyqxmd.com/read/27933094/the-newer-opioid-agonist-treatment-with-lower-substitutive-opiate-doses-is-associated-with-better-toxicology-outcome-than-the-older-harm-reduction-treatment
#11
Jacopo V Bizzarri, Valentina Casetti, Livia Sanna, Angelo Giovanni Icro Maremmani, Luca Rovai, Silvia Bacciardi, Daria Piacentino, Andreas Conca, Icro Maremmani
BACKGROUND: Charge-free heroin use disorder treatment in Italy follows two main approaches, i.e., harm reduction treatment (HRT) strategy in community low-threshold facilities for drug addiction and opioid agonist treatment (OAT) in high-threshold facilities for opioid addiction, focusing on pharmacological maintenance according to the Dole and Nyswander strategy. We aimed to compare the impact of HRT and OAT on patient outcome, as assessed through negativity for drugs on about 1-year urinalyses...
2016: Annals of General Psychiatry
https://www.readbyqxmd.com/read/27927042/pharmacological-treatments-for-methamphetamine-addiction-current-status-and-future-directions
#12
Javier Ballester, Gerald Valentine, Mehmet Sofuoglu
Methamphetamine (MA) abuse remains a global health challenge despite intense research interest in the development of pharmacological treatments. This review provides a summary of clinical trials and human studies on the pharmacotherapy of methamphetamine use disorder (MUD). Areas covered: We summarize published clinical trials that tested candidate medications for MUD and also conducted PubMed and Google Scholar searches to identify recently completed clinical trials using the keywords 'methamphetamine' 'addiction' 'pharmacotherapy' and 'clinical trial...
December 20, 2016: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/27903793/the-serotonin-5-ht2c-receptor-and-the-non-addictive-nature-of-classic-hallucinogens
#13
REVIEW
Clinton E Canal, Kevin S Murnane
Classic hallucinogens share pharmacology as serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptor agonists. Unique among most other Schedule 1 drugs, they are generally non-addictive and can be effective tools in the treatment of addiction. Mechanisms underlying these attributes are largely unknown. However, many preclinical studies show that 5-HT2C agonists counteract the addictive effects of drugs from several classes, suggesting this pharmacological property of classic hallucinogens may be significant. Drawing from a comprehensive analysis of preclinical behavior, neuroanatomy, and neurochemistry studies, this review builds rationale for this hypothesis, and also proposes a testable, neurobiological framework...
November 15, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27898427/cocaine-withdrawal-reduces-gamma-aminobutyric-acid-ergic-transmission-and-gephyrin-expression-at-medial-prefrontal-cortex-in-cocaine-conditioned-place-preference-rats-which-shows-increased-cocaine-seeking
#14
Wenqiong Yang, Hongsheng He, Yan Pan, Falan Duan, Dan Zhao, Bo Hu, Qingzhen Zhou, Wanhong Liu
AIMS: Chronic cocaine abuse decreases the inhibitory synaptic transmission via unknown mechanisms, while pharmacologically augmenting gamma-aminobutyric acid-ergic (GABAergic) transmission attenuates cocaine craving. Here, we propose that prolonged cocaine withdrawal downregulates GABAergic transmission and its important regulator gephyrin in medial prefrontal cortex (mPFC), in cocaine-conditioned place-preference (CPP) rats. METHODS: CPP test, patch clamp, and Western blot analysis are engaged to test this proposal...
November 30, 2016: European Addiction Research
https://www.readbyqxmd.com/read/27875549/the-synthetic-%C3%AE-nitrostyrene-derivative-cyt-rx20-inhibits-esophageal-tumor-growth-and-metastasis-via-pi3k-akt-and-stat3-pathways
#15
Wen-Chin Chiu, Yi-Chen Lee, Yu-Han Su, Yen-Yun Wang, Chun-Hao Tsai, Yi-An Hou, Chie-Hong Wang, Ying-Fong Huang, Chih-Jen Huang, Shah-Hwa Chou, Pei-Wen Hsieh, Shyng-Shiou F Yuan
The β-nitrostyrene family have been implicated for anti-cancer property. However, the pharmacological role of β-nitrostyrene in esophageal cancer remain unclear. Here, a β-nitrostyrene derivative, CYT-Rx20, was synthesized and assessed for its anti-cancer activities and underlying mechanism in esophageal cancer. CYT-Rx20 induced cytotoxicity in esophageal cancer cells by promoting apoptosis through activation of caspase cascade and poly(ADP-ribose) polymerase (PARP) cleavage. Besides, CYT-Rx20 inhibited esophageal cancer cell migration and invasion by regulating the expression of epithelial to mesenchymal transition (EMT) markers...
2016: PloS One
https://www.readbyqxmd.com/read/27852970/-food-addiction-as-a-new-behavioral-addiction
#16
Erika Eördögh, Mária Hoyer, Gábor Szeleczky
: Aim of review: To overview the new studies on food addiction and highlighting the analogies and differences between food and drug addiction. RESULTS: Recent studies on food addiction have demonstrated that the neurobiological circuits involved in the development of drug addiction also play a role in food consumption, and that the uptake of nutrients by the organism is under the control of numerous complicated peripheral and central signal-transducing networks...
2016: Psychiatria Hungarica: A Magyar Pszichiátriai Társaság Tudományos Folyóirata
https://www.readbyqxmd.com/read/27847973/metabotropic-glutamate-receptor-5-as-a-potential-target-for-smoking-cessation
#17
REVIEW
Cristiano Chiamulera, Claudio Marcello Marzo, David J K Balfour
RATIONALE: Most habitual smokers find it difficult to quit smoking because they are dependent upon the nicotine present in tobacco smoke. Tobacco dependence is commonly treated pharmacologically using nicotine replacement therapy or drugs, such as varenicline, that target the nicotinic receptor. Relapse rates, however, remain high, and there remains a need to develop novel non-nicotinic pharmacotherapies for the dependence that are more effective than existing treatments. OBJECTIVE: The purpose of this paper is to review the evidence from preclinical and clinical studies that drugs that antagonise the metabotropic glutamate receptor 5 (mGluR5) in the brain are likely to be efficacious as treatments for tobacco dependence...
November 16, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27846654/-synthetic-drugs-an-overview-of-important-and-newly-emerging-substances
#18
F Betzler, A Heinz, S Köhler
Background: Synthetic drug use and abuse are on the rise. Governmental institutions report a shift in consumption from natural drugs to synthetic drugs, and show an increase in confiscation, particularly of methamphetamine and newly identified psychoactive substances. In addition, the media report an alarming increase in the rate of consumption and casualties resulting from the use of drugs such as "crystal meth" and warn against a flood of this and other designer drugs from eastern European countries. Objectives: The present article gives an overview of current popular and widely used synthetic drugs, both classical substances (amphetamine, methamphetamine, MDMA) and new psychoactive substances ("designer drugs", "legal highs")...
November 2016: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/27836553/how-much-alcohol-is-in-ketamine-s-antidepressant-action
#19
REVIEW
Udo Bonnet
Ketamine is approved to start and maintain anaesthesia or analgesia. Ketamine is also known to be neurotoxic and an old drug of abuse. Numerous studies have proven a rapid and strong antidepressant response (AR) following parenteral sub-anaesthetic ketamine doses when applied the first time to patients with treatment resistant unipolar or bipolar major depression. This rapid and robust AR is encouraging, though short-lived (usually up to seven days). There is growing evidence that repeated und escalating ketamine administrations exert longer-lasting AR than single infusions...
January 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/27832755/experience-of-the-use-of-ketamine-to-manage-opioid-withdrawal-in-an-addicted-woman-a-case-report
#20
Laurence Lalanne, Chloe Nicot, Jean-Philippe Lang, Gilles Bertschy, Eric Salvat
BACKGROUND: Opioids are good painkillers, but many patients treated with opioids as painkillers developed a secondary addiction. These patients need to stop misusing opioids, but the mild-to-severe clinical symptoms associated with opioid withdrawal risk increasing their existing pain. In such cases, ketamine, which is used by anaesthetists and pain physicians to reduce opioid medication, may be an effective agent for managing opioid withdrawal. CASE PRESENTATION: We describe the case of a woman who developed a severe secondary addiction to opioids in the context of lombo-sciatic pain...
November 10, 2016: BMC Psychiatry
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