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Meth addiction

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https://www.readbyqxmd.com/read/28130052/pharmacological-activation-of-the-neurotensin-receptor-1-abrogates-the-methamphetamine-induced-striatal-apoptosis-in-the-mouse-brain
#1
Qingkun Liu, Ariela Hazan, Eddie Grinman, Jesus A Angulo
Methamphetamine (METH) is a widely abused psychostimulant displaying potent addictive and neurotoxic properties. METH induces neurotoxicity of dopaminergic terminals and striatal neurons in the striatum. Despite much information on neurotransmitters, the role of neuropeptides is poorly understood. In this study, we investigated the role of the neuropeptide neurotensin on the METH-induced apoptosis of some striatal neurons in mice. We observed that a single injection of METH (30 mg/kg, ip) induced the loss of approximately 15% of striatal neurons...
January 24, 2017: Brain Research
https://www.readbyqxmd.com/read/28110822/oxytocin-acts-in-nucleus-accumbens-to-attenuate-methamphetamine-seeking-and-demand
#2
Brittney M Cox, Brandon S Bentzley, Helaina Regen-Tuero, Ronald E See, Carmela M Reichel, Gary Aston-Jones
BACKGROUND: Evidence indicates that oxytocin, an endogenous peptide well known for its role in social behaviors, childbirth, and lactation, is a promising addiction pharmacotherapy. We employed a within-session behavioral-economic (BE) procedure in rats to examine oxytocin as a pharmacotherapy for methamphetamine (meth) addiction. The BE paradigm was modeled after BE procedures used to assess motivation for drugs in humans with addiction. The same BE variables assessed across species have been shown to predict later relapse behavior...
December 1, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/27939341/the-effects-of-varenicline-on-methamphetamine-self-administration-and-drug-primed-reinstatement-in-male-rats
#3
Steven T Pittenger, Scott T Barrett, Shinnyi Chou, Rick A Bevins
Methamphetamine (meth) addiction is a costly burden to both the individual user and society as a whole. Establishing effective pharmacotherapies to treat meth dependence is needed to help solve this health problem. The study reported herein examined the effects of varenicline, a partial α4β2 and full α7 nicotinic acetylcholine receptor agonist, on meth self-administration and reinstatement in male Sprague-Dawley rats. Following indwelling jugular catheter surgery, rats were either trained to self-administer meth or saline on a variable ratio (VR) 3 schedule of reinforcement...
March 1, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/27882750/-heart-attack-in-pregnancy
#4
T Výtisková, D Suchá, Z Fučíková
OBJECTIVE: To describe hear-attack on crystal meth addicted pregnant woman. DESIGN: Case report. CONCLUSION: Acute heart-attack during pregnancy means unexpected obstetric complication. The consequences could be fatal for the mother and the fetus. Although good delivery management and treatment could reduce morbidity and mortality to a minimum.
2016: Ceská Gynekologie
https://www.readbyqxmd.com/read/27869204/mrna-changes-in-nucleus-accumbens-related-to-methamphetamine-addiction-in-mice
#5
Li Zhu, Jiaqi Li, Nan Dong, Fanglin Guan, Yufeng Liu, Dongliang Ma, Eyleen L K Goh, Teng Chen
Methamphetamine (METH) is a highly addictive psychostimulant that elicits aberrant changes in the expression of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) in the nucleus accumbens of mice, indicating a potential role of METH in post-transcriptional regulations. To decipher the potential consequences of these post-transcriptional regulations in response to METH, we performed strand-specific RNA sequencing (ssRNA-Seq) to identify alterations in mRNA expression and their alternative splicing in the nucleus accumbens of mice following exposure to METH...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27846654/-synthetic-drugs-an-overview-of-important-and-newly-emerging-substances
#6
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/27822269/the-effect-of-group-therapy-with-transactional-analysis-approach-on-emotional-intelligence-executive-functions-and-drug-dependency
#7
Masoomeh Forghani, Bahram Ali Ghanbari Hashem Abadi
OBJECTIVES: The aim of the present study was to evaluate the effect of group psychotherapy with transactional analysis (TA) approach on emotional intelligence (EI), executive functions and substance dependency among drug-addicts at rehabilitation centers in Mashhad city, Iran, in 2013. PATIENTS AND METHODS: In this quasi-experimental study with pretest, posttest, case- control stages, 30 patients were selected from a rehabilitation center and randomly divided into two groups...
June 2016: Iranian Journal of Psychiatry and Behavioral Sciences
https://www.readbyqxmd.com/read/27799294/structure-activity-relationships-of-substituted-cathinones-with-transporter-binding-uptake-and-release
#8
Amy J Eshleman, Katherine M Wolfrum, John F Reed, Sunyoung O Kim, Tracy Swanson, Robert A Johnson, Aaron Janowsky
Synthetic cathinones are components of "bath salts" and have physical and psychologic side effects, including hypertension, paranoia, and hallucinations. Here, we report interactions of 20 "bath salt" components with human dopamine, serotonin, and norepinephrine transporters [human dopamine transporter (hDAT), human serotonin transporter (hSERT), and human norepinephrine transporter (hNET), respectively] heterologously expressed in human embryonic kidney 293 cells. Transporter inhibitors had nanomolar to micromolar affinities (Ki values) at radioligand binding sites, with relative affinities of hDAT>hNET>hSERT for α-pyrrolidinopropiophenone (α-PPP), α-pyrrolidinobutiophenone, α-pyrrolidinohexiophenone, 1-phenyl-2-(1-pyrrolidinyl)-1-heptanone, 3,4-methylenedioxy-α-pyrrolidinopropiophenone, 3,4-methylenedioxy-α-pyrrolidinobutiophenone, 4-methyl-α-pyrrolidinopropiophenone, α-pyrrolidinovalerophenone, 4-methoxy-α-pyrrolidinovalerophenone, α-pyrrolidinopentiothiophenone (alpha-PVT), and α-methylaminovalerophenone, and hDAT>hSERT>hNET for methylenedioxypentedrone...
January 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27746146/methamphetamine-induced-toxicity-the-role-of-autophagy
#9
REVIEW
Ali Roohbakhsh, Kobra Shirani, Gholamreza Karimi
Methamphetamine (METH) is a highly potent and addictive drug with major medical, psychiatric, cognitive, socioeconomic, and legal consequences. It is well absorbed following different routes of administration and distributed throughout the body. METH is known as psychomotor stimulant with potent physiological outcomes on peripheral and central nervous systems, resulting in physical and psychological disorders. Autophagy is a highly conserved and regulated catabolic pathway which is critical for maintaining cellular energy homeostasis and regulating cell growth...
December 25, 2016: Chemico-biological Interactions
https://www.readbyqxmd.com/read/27658516/breakdown-of-blood-brain-and-blood-spinal-cord-barriers-during-acute-methamphetamine-intoxication-role-of-brain-temperature
#10
Eugene A Kiyatkin, Hari Sharma
Methamphetamine (METH) is a powerful and often abused stimulant with potent addictive and neurotoxic properties. While it is generally believed that structural brain damage induced by METH results from oxidative stress, in this work we present data suggesting robust disruption of blood-brain and blood-spinal cord barriers (BBB and BSCB) during acute METH intoxication in rats. We demonstrate the relationships between METH-induced brain hyperthermia and widespread but structure-specific barrier leakage, acute glial activation, changes in brain water and ionic homeostasis, and structural damage of different types of cells in the brain and spinal cord...
September 20, 2016: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/27581301/the-clock-gene-rev-erb%C3%AE-regulates-methamphetamine-actions-on-circadian-timekeeping-in-the-mouse-brain
#11
Nora L Salaberry, Maria Mateo, Jorge Mendoza
Circadian rhythms are strongly affected by drugs. In rodents, chronic methamphetamine (METH) intake changes circadian activity rhythms, mainly by altering light synchronization that generates the expression of a free-running rhythm with a period longer than 24 h and a second behavioral component that is independent of the main suprachiasmatic (SCN) clock. Although a number of clock genes do not appear to be involved in the effects of METH on circadian behavior, the molecular clockwork controlling these changes is still unclear...
September 1, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27565679/cholecystokinin-8-inhibits-methamphetamine-induced-neurotoxicity-via-an-anti-oxidative-stress-pathway
#12
Di Wen, Meiling An, Hongyan Gou, Xia Liu, Li Liu, Chunling Ma, Bin Cong
As a powerful addictive psychostimulant drug, coupled with its neurotoxicity, methamphetamine (METH) abuse may lead to long-lasting abnormalities in brain structure and function. We found that pretreatment of cholecystokinin-8 (CCK-8) inhibited METH-induced brain cellular dopaminergic (DA) damage in the striatum and substantia nigra, and related behavioural deficits and hyperthermia. However, the mechanism of CCK-8 action on METH-induced toxicity is not clear. The aim of this study was to explore whether the possible protective effect of CCK-8 on METH-induced neurotoxicity involved anti-oxidative stress mechanisms...
August 23, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27544406/ifenprodil-attenuates-the-acquisition-and-expression-of-methamphetamine-induced-behavioral-sensitization-and-activation-of-ras-erk1-2-cascade-in-the-caudate-putamen
#13
Lu Li, Chuchu Qiao, Gang Chen, Hongyan Qian, Ying Hou, Tao Li, Xinshe Liu
Chronic discontinuous use of many psychomotor stimulants leads to behavioral sensitization and, owing to it shares common mechanisms with relapse, most researchers use its animal model to explore the neurobiological mechanisms of addiction. Recent studies have proved that N-methyl-d-aspartate receptors (NMDARs) are implicated in psychomotor stimulant-induced behavioral sensitization. However, the function of GluN2B-containing NMDARs and their potential downstream cascade(s) in the acquisition and expression of behavioral sensitization to methamphetamine (METH) have not been explored...
October 29, 2016: Neuroscience
https://www.readbyqxmd.com/read/27426635/sodium-butyrate-modulates-a-methamphetamine-induced-conditioned-place-preference
#14
Jie Zhu, Na Zhao, Yanjiong Chen, Li Zhu, Qing Zhong, Jian Liu, Teng Chen
Previous studies demonstrated that histone acetylation modulated the transcription of associated gene expression and thus contributed to the persistence of addictive behaviors and neuroplasticity. Nonetheless, the roles of histone acetylation in distinct phases of methamphetamine (METH)-induced conditioned place preference (CPP) remain unclear. The current study examines the effects of the histone deacetylases (HDACs) inhibitor sodium butyrate (NaB) on the acquisition, extinction, and reinstatement of METH-induced CPP in mice...
July 18, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27388625/sympathomimetic-effects-of-chronic-methamphetamine-abuse-on-oral-health-a-cross-sectional-study
#15
Niklas Rommel, Nils H Rohleder, Steffen Koerdt, Stefan Wagenpfeil, Roland Härtel-Petri, Klaus-Dietrich Wolff, Marco R Kesting
BACKGROUND: Methamphetamine, a highly addictive sympathomimetic stimulant, is currently widely abused worldwide and has been associated with devastating effects on oral health, resulting in the term "meth mouth". However, "meth mouth" pathology is primarily based on case reports with a lack of systematic clinical evaluation. Therefore, we have conducted a systematic study to investigate (1) the pharmacological impact of methamphetamine on oral health with regard to saliva function, including the parameters saliva flow rate and total saliva production (ml/5 min) and the buffering capacity of saliva; (2) the contribution of the symptoms of bruxism and muscle trismus to potential oral health damage...
2016: BMC Oral Health
https://www.readbyqxmd.com/read/27346277/administration-of-activated-glial-condition-medium-in-the-nucleus-accumbens-extended-extinction-and-intensified-reinstatement-of-methamphetamine-induced-conditioned-place-preference
#16
Reza Arezoomandan, Marzieh Moradi, Ghassem Attarzadeh-Yazdi, Carlos Tomaz, Abbas Haghparast
Methamphetamine (METH) is a psychostimulant drug with significant abuse potential and neurotoxic effects. A high percentage of users relapse to use after detoxification and no effective medication has been developed for treatment of METH addiction. Developing evidences indicated the role of glial cells in drugs abused related phenomena. However, little is known about the role of these cells in the maintenance and reinstatement of METH-seeking behaviors. Therefore, the current study was conducted to clarify the role of glial cells in the maintenance and reinstatement of METH-induced conditioned place preference (CPP) in rats...
July 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27339870/ifenprodil-attenuates-methamphetamine-induced-behavioral-sensitization-and-activation-of-ras-erk-%C3%A2-fosb-pathway-in-the-caudate-putamen
#17
Lu Li, Xinshe Liu, Chuchu Qiao, Gang Chen, Tao Li
Addiction is a debilitating, chronic psychiatric disorder that is difficult to cure completely owing to the high rate of relapse. Behavioral sensitization is considered to may underlie behavioral changes, such as relapse, caused by chronic abuse of psychomotor stimulants. Thus, its animal models have been widely used to explore the etiology of addiction. Recently, increasing evidence has demonstrated that N-methyl-D-aspartate receptors (NMDARs) play an important role in addiction to psychomotor stimulants. However, the role of GluN2B-containing receptors and their downstream signaling pathway(s) in behavioral sensitization induced by methamphetamine (METH) have not been investigated yet...
October 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27314105/regional-brain-activity-in-abstinent-methamphetamine-dependent-males-following-cue-exposure
#18
Robert Malcolm, Hugh Myrick, Xingbao Li, Scott Henderson, Kathleen T Brady, Mark S George, Ronald E See
BACKGROUND: Neuroimaging of drug-associated cue presentations has aided in understanding the neurobiological substrates of craving and relapse for cocaine, alcohol, and nicotine. However, imaging of cue-reactivity in methamphetamine addiction has been much less studied. METHOD: Nine caucasian male methamphetamine-dependent subjects and nine healthy controls were scanned in a Phillips 3.0T MRI scan when they viewed a randomized presentation of visual cues of methamphetamine, neutral objects, and rest conditions...
2016: Journal of Drug Abuse
https://www.readbyqxmd.com/read/27256092/methamphetamine-use-in-central-germany-protocol-for-a-qualitative-study-exploring-requirements-and-challenges-in-healthcare-from-the-professionals-perspective
#19
Laura Hoffmann, Nadine Schumann, Thomas Fankhaenel, Carolin Thiel, Andreas Klement, Matthias Richter
INTRODUCTION: The synthetic drug methamphetamine with its high addiction potential is associated with substantial adverse health effects. In Germany, especially Central Germany, the increase in the consumption of methamphetamine has exceeded that of other illegal drugs. The treatment system and service providers are facing new challenges due to this rise in consumption. This qualitative study will explore the demand created by the increasing healthcare needs of methamphetamine-addicted persons in Central Germany, and the difficulty of rehabilitating addicted people...
2016: BMJ Open
https://www.readbyqxmd.com/read/27223864/reactivity-to-addictive-drugs-in-the-methylazoxymethanol-mam-model-of-schizophrenia-in-male-and-female-rats
#20
Jana Ruda-Kucerova, Zuzana Babinska, Petra Amchova, Tibor Stark, Filippo Drago, Alexandra Sulcova, Vincenzo Micale
OBJECTIVES: Patients with schizophrenia often suffer comorbid substance abuse regardless of gender. However, the vast majority of studies are only conducted in male subjects. Therefore, the aim of these experiments is to assess addictive behaviors of both sexes in a neurodevelopmental model of schizophrenia induced by prenatal methylazoxymethanol (MAM) acetate exposure. METHODS: MAM (22 mg/kg) was administered intraperitoneally on gestational day 17. Two studies were performed in the offspring: (1) an alcohol-drinking procedure to assess daily intake of 20% alcohol and relapse-like behavior after a period of forced abstinence; (2) Methamphetamine (METH) intravenous self administration (IVSA) followed by forced abstinence and reinstatement phases...
June 21, 2016: World Journal of Biological Psychiatry
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