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https://www.readbyqxmd.com/read/28221362/disrupted-iron-regulation-in-the-brain-and-periphery-in-cocaine-addiction
#1
K D Ersche, J Acosta-Cabronero, P S Jones, H Ziauddeen, R P L van Swelm, C M M Laarakkers, R Raha-Chowdhury, G B Williams
Stimulant drugs acutely increase dopamine neurotransmission in the brain, and chronic use leads to neuroadaptive changes in the mesolimbic dopamine system and morphological changes in basal ganglia structures. Little is known about the mechanisms underlying these changes but preclinical evidence suggests that iron, a coenzyme in dopamine synthesis and storage, may be a candidate mediator. Iron is present in high concentrations in the basal ganglia and stimulant drugs may interfere with iron homeostasis. We hypothesised that morphological brain changes in cocaine addiction relate to abnormal iron regulation in the brain and periphery...
February 21, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28220045/paternal-cocaine-taking-elicits-epigenetic-remodeling-and-memory-deficits-in-male-progeny
#2
M E Wimmer, L A Briand, B Fant, L A Guercio, A C Arreola, H D Schmidt, S Sidoli, Y Han, B A Garcia, R C Pierce
Paternal environmental perturbations including exposure to drugs of abuse can produce profound effects on the physiology and behavior of offspring via epigenetic modifications. Here we show that adult drug-naive male offspring of cocaine-exposed sires have memory formation deficits and associated reductions in NMDA receptor-mediated hippocampal synaptic plasticity. Reduced levels of the endogenous NMDA receptor co-agonist d-serine were accompanied by increased expression of the d-serine degrading enzyme d-amino acid oxidase (Dao1) in the hippocampus of cocaine-sired male progeny...
February 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28219696/irisin-in-goldfish-carassius-auratus-effects-of-irisin-injections-on-feeding-behavior-and-expression-of-appetite-regulators-uncoupling-proteins-and-lipoprotein-lipase-and-fasting-induced-changes-in-fndc5-expression
#3
Zahndra Diann Butt, Jessica Dalton Hackett, Hélène Volkoff
Irisin is a peptide cleaved from the fibronectin type III domain containing protein 5 (FNDC5) gene that is secreted predominantly by muscle cells but also by other tissues including brain and intestine. In mammals, irisin has been shown to have thermogenic actions via the modulation of uncoupling proteins (UCPs) and to affect feeding and energy homeostasis via actions in brain, adipose tissue, liver, muscle and gastrointestinal tract. To examine the role of irisin on feeding and metabolism in fish, the effects of peripheral (intraperitoneal) injections of irisin on feeding behavior, glucose levels and the mRNA expressions of appetite regulators (cocaine and amphetamine regulated transcript CART, agouti related protein AgRP, orexin), UCPs and lipoprotein lipase LPL and brain factors (brain-derived neurotrophic factor , BDNF and tyrosine hydroxylase TH) were assessed in brain, white muscle and intestine...
February 17, 2017: Peptides
https://www.readbyqxmd.com/read/28217616/cocaine-induced-vasculitis-with-cutaneous-manifestation-a-recurrent-episode-after-2-years
#4
Thein Swe, Mona Pervil-Ulysse, Aam A Baqui
Cocaine is a popular recreational drug in the United States, and up to 70% of the seized cocaine contains levamisole which is an antihelminthic that can cause cutaneous vasculitis with necrosis and positive antineutrophil cytoplasmic antibodies (ANCAs). Here, we report a unique case of recurrent cocaine-induced vasculitis in a patient who smokes cocaine for more than 20 years. A 38-year-old woman complained of painful erythematous rash in her right arm and right thigh which appeared some hours after smoking cocaine...
July 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28214742/what-s-the-agreement-between-self-reported-and-biochemical-verification-of-drug-use-a-look-at-permanent-supportive-housing-residents
#5
Alexis Rendon, Melvin Livingston, Sumihiro Suzuki, Whitney Hill, Scott Walters
Self-reported substance use is commonly used as an outcome measure in treatment research. We evaluated the validity of self-reported drug use in a sample of 334 adults with mental health problems who were residing in supportive housing programs. The primary analysis was the calculation of the positive predictive values (PPVs) of self-report compared to an oral fluid test taken at the same time. A sensitivity analysis compared the positive predictive values of two self-reported drug use histories: biological testing window (ranging between the past 96h to 30days depending on drug type) or the full past 90-day comparison window (maximum length recorded during interview)...
February 10, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28214075/asymmetric-total-synthesis-of-tetrahydroprotoberberine-derivatives-and-evaluation-of-their-binding-affinities-at-dopamine-receptors
#6
David Y W Lee, Jing Liu, Shuzhen Zhang, Peng Huang, Lee-Yuan Liu-Chen
Cocaine addiction remains a serious challenge for clinical and medical research because there is no effective pharmacological treatment. l-THP, a natural product isolated from Corydalis yanhusuo W.T. Wang, is one of the most frequently used traditional herbs to treat drug addiction in China. Our laboratory first reported that its demethylated metabolites l-ICP, l-CD, and l-CP had high affinity at dopamine D1, D2, and D5 receptors. Here we report the chemical synthesis of these metabolites and other derivatives and their binding affinities at dopamine receptors...
January 31, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28213242/cocaine-profiling-implementation-of-a-predictive-model-by-atr-ftir-coupled-with-chemometrics-in-forensic-chemistry
#7
Stefano Materazzi, Adolfo Gregori, Luigi Ripani, Azzurra Apriceno, Roberta Risoluti
In this study, a strategy based on Infrared Spectroscopy with Fourier Transformed and Attenuated Total Reflectance associated with chemometrics (ATR-FTIR) is proposed to identify the chemical "fingerprint" of cocaine samples. To this end, standard mixtures of cocaine and cuttings at differents ratio were investigated in order to develop a multivariate classification model to simultaneously predict the composition of the samples and to obtain a profile of adulteration of cocaine seizures. In addition, the application of a Partial Least Squares (PLS) and Principal Component Regression (PCR) calibration approaches were found to be a useful tool to predict the content of cocaine, caffeine, procaine, lidocaine and phenacetin in drug seizures...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213190/n-acetylcysteine-for-treating-cocaine-addiction-a-systematic-review
#8
REVIEW
Marco Antonio Nocito Echevarria, Tassio Andrade Reis, Giulianno Ruffo Capatti, Victor Siciliano Soares, Dartiu Xavier da Silveira, Thiago Marques Fidalgo
The aim of this paper is to extensively review the current literature available on N-acetylcysteine (NAC) treatment for cocaine dependence (clinical and experimental studies). We screened all articles published before February 2016 reporting on the use of NAC as a pharmacological intervention for cocaine dependence or discussed its potential as a therapeutic approach for cocaine dependence. We described our results qualitatively. 21 studies matched our search criteria: 6 clinical trials and 15 animal studies...
February 11, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28212507/higher-severity-of-cocaine-addiction-is-associated-with-tactile-and-somatic-hallucinations
#9
C Roncero, L Grau-López, R F Palma-Álvarez, L Rodriguez-Cintas, E Ros-Cucurull, A Esojo, C Daigre
BACKGROUND: The aim of this study is to describe the features of cocaine-dependent patients who have had cocaine-induced tactile/somatic hallucinations (CITSH), and to analyze the association with addiction-related variables and psychiatric comorbidity, comparing patients with CITSH, patients with cocaine psychotic symptoms (CIP) and no CITSH, and patients without any psychotic symptom. METHOD: A cross-sectional study was conducted in 767 cocaine-dependent patients in an outpatient treatment center for addictions...
December 1, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28210781/adolescent-cocaine-exposure-enhances-goal-tracking-behavior-and-impairs-hippocampal-cell-genesis-selectively-in-adult-bred-low-responder-rats
#10
M Julia García-Fuster, Aram Parsegian, Stanley J Watson, Huda Akil, Shelly B Flagel
RATIONALE: Environmental challenges during adolescence, such as drug exposure, can cause enduring behavioral and molecular changes that contribute to life-long maladaptive behaviors, including addiction. Selectively bred high-responder (bHR) and low-responder (bLR) rats represent a unique model for assessing the long-term impact of adolescent environmental manipulations, as they inherently differ on a number of addiction-related traits. bHR rats are considered "addiction-prone," whereas bLR rats are "addiction-resilient," at least under baseline conditions...
February 16, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28210779/locomotor-activity-and-discriminative-stimulus-effects-of-a-novel-series-of-synthetic-cathinone-analogs-in-mice-and-rats
#11
Michael B Gatch, Sean B Dolan, Michael J Forster
RATIONALE: Recent years have seen an increase in the recreational use of novel, synthetic psychoactive substances. There are little or no data on the abuse liability of many of the newer compounds. OBJECTIVES: The current study investigated the discriminative stimulus and locomotor effects of a series of synthetic analogs of cathinone: α-pyrrolidinopropiophenone (α-PPP), α-pyrrolidinohexiophenone (α-PHP), α-pyrrolidinopentiothiophenone (α-PVT), 3,4-methylenedioxybutiophenone (MDPBP), and ethylone...
February 16, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28209735/the-epac-phospholipase-c%C3%AE%C2%B5-pathway-regulates-endocannabinoid-signaling-and-cocaine-induced-disinhibition-of-vta-dopamine-neurons
#12
Jiaqing Tong, Xiaojie Liu, Casey Vickstrom, Yan Li, Laikang Yu, Youming Lu, Alan V Smrcka, Qing-Song Liu
Exchange protein directly activated by cAMP (Epac) is a direct effector for the ubiquitous second messenger cAMP. Epac activates the phospholipase Cε (PLCε) pathway. PLCβ has been linked to the synthesis of the endocannabinoid 2-arachidonoylglycerol (2-AG). Here, we report that Epac facilitates endocannabinoid-mediated retrograde synaptic depression through activation of PLCε. Intracellular loading of a selective Epac agonist 8-CPT-2Me-cAMP into ventral tegmental area (VTA) dopamine neurons enabled previously ineffective stimuli to induce depolarization-induced suppression of inhibition (DSI) and long-term depression of IPSCs (I-LTD) in the VTA...
February 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28208913/eosinophilic-granulomatosis-with-polyangiitis-egpa-and-hepatitis-b-infection-a-rare-association
#13
Nidhi Kaeley, Narula Kamakshi
Eosinophilic Granulomatosis with Polyangiitis (EGPA) or Churg-Strauss syndrome is a rare systemic illness which is characterized by necrotizing inflammation of small and medium sized vessels. The prominent features include asthma, eosinophilia, transient pulmonary infiltration and systemic vasculitis. Various triggering factors have been reported as putative aetiological agents of Churg-Strauss syndrome. They include infections, allergic desensitization, vaccinations like hepatitis B and influenza vaccination, cocaine abuse, drugs like leukotriene receptor antagonists and exposure to pigeons...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207249/convection-driven-pull-down-assays-in-nanoliter-droplets-using-scaffolded-aptamers
#14
Xiangmeng Qu, Hongbo Zhang, Hong Chen, Ali Aldalbahi, Li Li, Yang Tian, David A Weitz, Hao Pei
One of the great challenges in cellular studies is to develop a rapid and biocompatible analytical tool for single-cell analysis. We report a rapid, DNA nanostructure-supported aptamer pull-down (DNaPull) assay under convective flux in a glass capillary for analyzing contents of droplets with nano or picoliter volumes. We have demonstrated that the scaffolded aptamer can greatly improve the efficiency of target molecules' pull-down. The convective flux enables complete reaction in less than 5 min, which is an 18-fold improvement compared to purely diffusive flux (traditional model of stationary case)...
February 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28204841/a-single-cocaine-exposure-disrupts-actin-dynamics-in-the-cortico-accumbal-pathway-of-adolescent-rats-modulation-by-a-second-cocaine-injection
#15
Lucia Caffino, Giuseppe Giannotti, Giorgio Racagni, Fabio Fumagalli
RATIONALE AND OBJECTIVES: Among the changes caused by repeated exposure to drugs of abuse, structural rearrangements play a critical role, setting the stage for maladaptive responses to environmental challenges and sustaining drug-taking and drug-seeking behaviors. Given that adolescents are more vulnerable to drug abuse than adults and based on our recent data showing that a single exposure to cocaine during adolescence is sufficient to change the adolescent brain, we decided to investigate whether acute cocaine exposure may alter actin remodeling in reward-related brain regions...
February 15, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28202303/association-between-substance-use-diagnoses-and-psychiatric-disorders-in%C3%A2-an-adolescent-and-young-adult-clinic-based-population
#16
Justine Wittenauer Welsh, John R Knight, Sherry Shu-Yeu Hou, Monica Malowney, Patricia Schram, Lon Sherritt, J Wesley Boyd
PURPOSE: Adolescents with substance use disorders are more likely to have a current psychiatric disorder. However, when compared with the adult literature, there is relatively limited information regarding the specific co-occurrence of certain mental health diagnoses and substance use disorders in adolescents. The objectives of this study were to build on the previous literature regarding mental health diagnoses and different types of substance use disorders in adolescents, as well as explore the differences, if any, between groupings of mental health diagnosis and type of substance used...
February 12, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28199956/bingeing-on-fat-increases-cocaine-reward
#17
EDITORIAL
M Carmen Blanco-Gandía, Marta Rodríguez-Arias
No abstract text is available yet for this article.
February 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28196335/paternal-nicotine-exposure-alters-hepatic-xenobiotic-metabolism-in-offspring
#18
Markus P Vallaster, Shweta Kukreja, Xinyang Y Bing, Jennifer Ngolab, Rubing Zhao-Shea, Paul D Gardner, Andrew R Tapper, Oliver J Rando
Paternal environmental conditions can influence phenotypes in future generations, but it is unclear whether offspring phenotypes represent specific responses to particular aspects of the paternal exposure history, or a generic response to paternal 'quality of life'. Here, we establish a paternal effect model based on nicotine exposure in mice, enabling pharmacological interrogation of the specificity of the offspring response. Paternal exposure to nicotine prior to reproduction induced a broad protective response to multiple xenobiotics in male offspring...
February 14, 2017: ELife
https://www.readbyqxmd.com/read/28194562/the-iboga-alkaloids
#19
Catherine Lavaud, Georges Massiot
Iboga alkaloids are a particular class of indolomonoterpenes most often characterized by an isoquinuclidine nucleus. Their first occurrence was detected in the roots of Tabernanthe iboga, a sacred plant to the people of Gabon, which made it cult object. Ibogaine is the main representative of this class of alkaloids and its psychoactive properties are well documented. It has been proposed as a drug cessation treatment and has a wide range of activities in targeting opioids, cocaine, and alcohol. The purpose of this chapter is to provide a background on this molecule and related compounds and to update knowledge on the most recent advances made...
2017: Progress in the Chemistry of Organic Natural Products
https://www.readbyqxmd.com/read/28194438/a-role-for-muscarinic-receptors-in-neutrophil-extracellular-trap-formation-and-levamisole-induced-autoimmunity
#20
Carmelo Carmona-Rivera, Monica M Purmalek, Erica Moore, Meryl Waldman, Peter J Walter, H Martin Garraffo, Karran A Phillips, Kenzie L Preston, Jonathan Graf, Mariana J Kaplan, Peter C Grayson
Levamisole, an anthelmintic drug with cholinergic properties, has been implicated in cases of drug-induced vasculitis when added to cocaine for profit purposes. Neutrophil extracellular trap (NET) formation is a cell death mechanism characterized by extrusion of chromatin decorated with granule proteins. Aberrant NET formation and degradation have been implicated in idiopathic autoimmune diseases that share features with levamisole-induced autoimmunity as well as in drug-induced autoimmunity. This study's objective was to determine how levamisole modulates neutrophil biology and its putative effects on the vasculature...
February 9, 2017: JCI Insight
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