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Methamphetamine addiction

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https://www.readbyqxmd.com/read/29719347/chn2-promoter-methylation-change-may-be-associated-with-methamphetamine-dependence
#1
Liu Hao, Tao Luo, Huixi Dong, Aiguo Tang, Wei Hao
Background: Methamphetamine (MA) abuse is becoming increasingly serious in China. The mechanism of MA dependence remains unclear. CHN2 gene encodes chimeric protein-2 that regulate axonal pruning via the Rac-GTPase system and play a pivotal role in the formation of nervous circuits. Genetic studies suggest that the polymorphism of the CHN2 gene was related to substance dependence. Aims: The aim of this study was to investigate the association between the methylation of CHN2 gene promoter with MA dependence...
December 25, 2017: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/29709789/high-frequency-repetitive-transcranial-magnetic-stimulation-of-the-left-dorsolateral-prefrontal-cortex-restores-attention-bias-to-negative-information-in-methamphetamine-addicts
#2
Ling Zhang, Xinyu Cao, Qiongdan Liang, Xiang Li, Jiemin Yang, Jiajin Yuan
Methamphetamine (hereafter, meth) addiction results in various emotional problems linked to structural impairments in the prefrontal cortex (PFC). In this paper, we investigated whether high-frequency (10 Hz) repetitive transcranial magnetic stimulation (rTMS) of the left dorsolateral PFC (DLPFC) can improve emotional attention. Thirty-one meth addicts were randomly assigned to a 10 Hz or sham rTMS group; additionally, 31 healthy participants were enrolled, who were required to respond as correctly and quickly as possible to a yellow arrow embedded in an image depicting emotional content (neutral, fear, sadness, or disgust)...
April 21, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29702335/drd2-ankk1-gene-polymorphisms-in-forensic-autopsies-of-methamphetamine-intoxication-fatalities
#3
Aya Matsusue, Takaki Ishikawa, Tomoya Ikeda, Naoto Tani, Hisatomi Arima, Brian Waters, Kenji Hara, Masayuki Kashiwagi, Mio Takayama, Natsuki Ikematsu, Shin-Ichi Kubo
Dopamine D2 receptor/ankyrin repeat and kinase domain containing 1 (DRD2/ANKK1) gene polymorphisms have been associated with responses to psychotropic drugs and addiction. We analyzed two DRD2/ANKK1 polymorphisms, Taq1A and -141C Ins/Del, in 37 fatal methamphetamine (MA) intoxication cases and 235 control cases in which MA and psychotropic drugs were not detected. The association among polymorphism, cause of death, and cerebrospinal fluid (CSF) dopamine concentration was evaluated. The Taq1A polymorphism distribution in the fatal MA intoxication cases differed from in the controls (P = 0...
April 22, 2018: Legal Medicine
https://www.readbyqxmd.com/read/29689344/the-relationship-between-interleukin-6-and-functional-connectivity-in-methamphetamine-users
#4
Milky Kohno, Jennifer M Loftis, Marilyn Huckans, Laura E Dennis, Holly McCready, William F Hoffman
Methamphetamine (MA) causes an increase in pro-inflammatory cytokines in animal models and in humans. Resulting activation of microglia and neuro-inflammation could, via effects on reward networks, mediate behavioral characteristics of addiction. We examined the relationship between interleukin-6 (IL-6) and corticolimbic and striatolimbic resting-state functional connectivity (RSFC). Thirty adults diagnosed with MA dependence and 20 control subjects underwent a resting-state functional magnetic resonance imaging (fMRI) scan and gave a blood sample for determination of plasma IL-6 levels...
April 21, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29684471/glucocorticoid-receptors-in-the-basolateral-amygdala-mediated-the-restraint-stress-induced-reinstatement-of-methamphetamine-seeking-behaviors-in-rats
#5
Zahra Taslimi, Abdolrahman Sarihi, Abbas Haghparast
Methamphetamine (METH) addiction is a growing epidemic worldwide. It is a common psychiatric disease and stress has an important role in the drug seeking and relapse behaviors. The involvement of the basolateral amygdala (BLA) in effects of stress on the reward pathway has been discussed in several studies. In this study, we tried to find out the involvement of glucocorticoid receptors (GRs) in the BLA in stress-induced reinstatement of the extinguished METH-induced conditioned place preference (CPP) in rats...
April 20, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29679670/mindfulness-based-relapse-prevention-combined-with-virtual-reality-cue-exposure-for-methamphetamine-addiction-study-protocol-for-a-randomized-controlled-trial
#6
XiJing Chen, Dongmei Wang, Lidan Zhou, Markus Winkler, Paul Pauli, Nan Sui, Yonghui Li
BACKGROUND: Mindfulness-based relapse prevention (MBRP) is a method that combines cognitive behavioral relapse prevention with mindfulness practice. Research shows that MBRP can effectively reduce negative emotions and craving in people with substance use disorders (SUDs). An important part of MBRP is to practice mindfulness meditation to cope with high-risk situations for relapse, such as stimuli and situations associated with drug taking. Virtual reality cue exposure (VRCE) may be a complementary approach to MBRP as it allows for controlled and graded presentations of various high-risk situations with distal and proximal drug cues...
April 18, 2018: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29679646/chronic-methamphetamine-exposure-attenuates-neural-activation-in-hypothalamic-pituitary-adrenal-axis-associated-brain-regions-in-a-sex-specific-manner
#7
Jason S Jacobskind, Zachary J Rosinger, Tiffany Gonzalez, Kristen L Zuloaga, Damian G Zuloaga
Sex differences in methamphetamine (MA) abuse and consequences of MA have been reported with females showing an increased addiction phenotype and withdrawal symptoms. One mechanism through which these effects might occur is via sex-specific alterations in the hypothalamic-pituitary-adrenal (HPA) axis and its associated brain regions. In this study, mice were administered MA (5 mg/kg) or saline for 10 consecutive days. During early withdrawal, anxiety-like behaviors were assessed in the open field, light/dark box, and elevated plus maze...
April 18, 2018: Neuroscience
https://www.readbyqxmd.com/read/29671582/dark-side-of-amphetamine-and-analogues-pharmacology-syndromic-manifestation-and-management-of-amphetamine-addiction
#8
Abdul Mannan Baig
The threat imposed by the use of psychoactive, illicit drugs on human health and the cost of rehabilitation of the affected individuals is nothing less than billions of dollars per year. Of the psychoactive substance abuse drugs are amphetamine and its analogues like methamphetamine. This Viewpoint intends to draw the attention of readers toward the neurological basis of "falling a prey" to methamphetamine. Attention has been paid toward a rapid desensitizing attribute that develops shortly after the repetitive use of drugs belonging to sympathomimetic agents of this group...
April 19, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29580953/effects-of-drugs-of-abuse-on-channelrhodopsin-2-kinetics
#9
Dominic Gioia, Minfu Xu, Wesley Wayman, John Woodward
Channelrhodopsins are light activated ion channels used extensively over the past decade to probe the function of genetically defined neuronal populations and distinct neural circuits with high temporal and spatial precision. The widely used Channelrhodopsin-2 variant (ChR2) is an excitatory opsin that undergoes conformational changes in response to blue light, allowing non-selective passage of protons and cations across the plasma membrane thus leading to depolarization. In the addiction neuroscience field, opsins such as ChR2 provide a means to disambiguate the overlapping circuitry involved in mediating the reinforcing and aversive effects of drugs of abuse as well as to determine the plasticity that can occur in these circuits during the development of dependence...
March 23, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29576706/rhynchophylline-downregulates-phosphorylated-camp-response-element-binding-protein-nuclear-receptor-related-1-and-brain-derived-neurotrophic-factor-expression-in-the-hippocampus-of-ketamine-induced-conditioned-place-preference-rats
#10
Youli Guo, Chaohua Luo, Genghong Tu, Chan Li, Yi Liu, Wei Liu, Ken Kin Lam Yung, Zhixian Mo
Background: Addiction to ketamine is becoming a serious public health issues, for which there exists no effective treatment. Rhynchophylline (Rhy) is an alkaloid extracted from certain Uncaria species that is well known for both its potent anti-addictive and neuroprotective properties. Increasing evidence supports the contributions of cAMP response element binding protein (CREB), nuclear receptor-related-1 (Nurr1), and brain-derived neurotrophic factor (BDNF) in modulating neural and behavioral plasticity which was induced by addictive drugs...
January 2018: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29571720/prenatal-exposure-to-modafinil-alters-behavioural-response-to-methamphetamine-in-adult-male-mice
#11
Jana Ruda-Kucerova, Jana Pistovcakova, Petra Amchova, Alexandra Sulcova, Alena Machalova
Modafinil is a psychostimulant drug prescribed for treatment of narcolepsy. However, it is used as a "smart drug" especially by young adults to increase wakefulness, concentration and mental performance. Therefore, it can also be used by women with childbearing potential and its developmental effects can become a concern. The aim of this study was to assess behavioural and immune effects of prenatal modafinil exposure in mice and to evaluate the reaction to methamphetamine exposure on these animals in adult age...
June 2018: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/29567545/a-commentary-on-the-effects-of-methamphetamine-and-the-status-of-methamphetamine-abuse-among-youths-in-south-korea-japan-and-china
#12
REVIEW
Nam Ji Kwon, Eunyoung Han
Methamphetamine (MA) abuse continues in East Asia and shows an increasing trend among youths in South Korea, Japan, and China. Although the negative effects of MA abuse on youth are considered as significant problems, few studies have been conducted on the topic in these countries. This paper focuses on the effects of MA on the human body and current MA abuse among youths in South Korea, Japan, and China. To investigate the negative effects of MA on the human body, we searched the keywords "MA," "human," and "effect" for studies published from 2013 to 2017...
February 26, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29560440/chronic-voluntary-oral-methamphetamine-induces-deficits-in-spatial-learning-and-hippocampal-protein-kinase-mzeta-with-enhanced-astrogliosis-and-cyclooxygenase-2-levels
#13
Jorge A Avila, Roseanna M Zanca, Denis Shor, Nicholas Paleologos, Amber A Alliger, Maria E Figueiredo-Pereira, Peter A Serrano
Methamphetamine (MA) is an addictive drug with neurotoxic effects on the brain producing cognitive impairment and increasing the risk for neurodegenerative disease. Research has focused largely on examining the neurochemical and behavioral deficits induced by injecting relatively high doses of MA [30 mg/kg of body weight (bw)] identifying the upper limits of MA-induced neurotoxicity. Accordingly, we have developed an appetitive mouse model of voluntary oral MA administration (VOMA) based on the consumption of a palatable sweetened oatmeal mash containing a known amount of MA...
February 2018: Heliyon
https://www.readbyqxmd.com/read/29559427/a-web-based-toolkit-to-provide-evidence-based-resources-about-crystal-methamphetamine-for-the-australian-community-collaborative-development-of-cracks-in-the-ice
#14
Katrina Elizabeth Champion, Cath Chapman, Nicola Clare Newton, Mary-Ellen Brierley, Lexine Stapinski, Frances Kay-Lambkin, Jack Nagle, Maree Teesson
BACKGROUND: The use of crystal methamphetamine (ice) and the associated harms for individuals, families, and communities across Australia has been the subject of growing concern in recent years. The provision of easily accessible, evidence-based, and up-to-date information and resources about crystal methamphetamine for the community is a critical component of an effective public health response. OBJECTIVE: This paper aims to describe the codevelopment process of the Web-based Cracks in the Ice Community Toolkit, which was developed to improve access to evidence-based information and resources about crystal methamphetamine for the Australian community...
March 20, 2018: JMIR Mental Health
https://www.readbyqxmd.com/read/29545857/expression-of-micrornas-in-the-serum-exosomes-of-methamphetamine-dependent-rats-vs-ketamine-dependent-rats
#15
Hancheng Li, Chan Li, Yuting Zhou, Chaohua Luo, Jingying Ou, Jing Li, Zhixian Mo
Drug abuse is a public health and social problem. A number of studies have reported that drug addiction is associated with microRNAs (miRNAs). By comparing the expression of miRNAs in the serum exosomes of methamphetamine-dependent and ketamine-dependent rats, the aim of the present study was to provide insights into the miRNA-mediated associations between the two groups. Published results on conditioned place preference (CPP) in rats conditioned by methamphetamine and ketamine were replicated. The expression of miRNAs in serum exosomes were determined by gene-chip sequencing...
April 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29541538/transcranial-dc-stimulation-modifies-functional-connectivity-of-large-scale-brain-networks-in-abstinent-methamphetamine-users
#16
Alireza Shahbabaie, Mitra Ebrahimpoor, Ali Hariri, Michael A Nitsche, Javad Hatami, Emad Fatemizadeh, Mohammad Ali Oghabian, Hamed Ekhtiari
Background: Transcranial direct current stimulation (tDCS) is a noninvasive brain stimulation tool suited to alter cortical excitability and activity via the application of weak direct electrical currents. An increasing number of studies in the addiction literature suggests that tDCS modulates subjective self-reported craving through stimulation of dorsolateral prefrontal cortex (DLPFC). The major goal of this study was to explore effects of bilateral DLPFC stimulation on resting state networks (RSNs) in association with drug craving modulation...
March 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29516602/ago2-and-dicer1-are-involved-in-meth-induced-locomotor-sensitization-in-mice-via-biogenesis-of-mirna
#17
Dan Liu, Li Zhu, Tong Ni, Fang-Lin Guan, Yan-Jiong Chen, Dong-Liang Ma, Eyleen L K Goh, Teng Chen
microRNA (miRNA) play important roles in drug addiction and act as a post-transcriptional regulator of gene expression. We previously reported extensive downregulation of miRNAs in the nucleus accumbens (NAc) of methamphetamine (METH)-sensitized mice. However, the regulatory mechanism of this METH-induced downregulation of miRNAs has yet to be elucidated. Thus, we examined METH-induced changes in the expression of miRNAs and their precursors, as well as the expression levels of mRNA and the proteins involved in miRNA biogenesis such as Dicer1 and Ago2, in the nucleus accumbens of METH-induced locomotor sensitized mice...
March 8, 2018: Addiction Biology
https://www.readbyqxmd.com/read/29516360/no-evidence-of-subgroups-found-in-amphetamine-consumers-in-iran
#18
Atireza Bananej, Sabine Völkl-Kernstock, Otto Lesch, Henriette Walter, Katrin Skala
Amphetamine type substances are the second most commonly consumed illicit drug type and their use is an important contributor to the global burden of disease. This investigation set out to determine whether, similar to alcohol or nicotine addiction, subgroups of consumers can also be found in amphetamine addicts. 204 consumers of methamphetamine only (n = 50) or both methamphetamine and heroin (n = 154) have been investigated in Mashhad, Iran by means of "Lesch Alcoholism Typology". No significant differences in consumption pattern or age of onset have been found between the different types...
March 7, 2018: Neuropsychiatrie: Klinik, Diagnostik, Therapie und Rehabilitation
https://www.readbyqxmd.com/read/29501686/involvement-of-dopamine-d2-receptor-in-a-single-methamphetamine-induced-behavioral-sensitization-in-c57bl-6j-mice
#19
Li Jing, Ben Liu, Min Zhang, Jian-Hui Liang
A single exposure to drugs of abuse is sufficient to induce behavioral sensitization, which is a form of long-lasting neuroplasticity. Dopamine D2 receptors are the main receptor for antipsychotic drugs, but little is known about their role in a single methamphetamine-induced behavioral sensitization. In the present study, we examined whether typical antipsychotic haloperidol and atypical antipsychotic risperidone, both targeting dopamine D2 receptor, could prevent the methamphetamine sensitization when they were given at the different phase of behavioral sensitization...
March 1, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29492824/inflammasome-activation-by-methamphetamine-potentiates-lipopolysaccharide-stimulation-of-il-1%C3%AE-production-in-microglia
#20
Enquan Xu, Jianuo Liu, Han Liu, Xiaobei Wang, Huangui Xiong
Methamphetamine (Meth) is an addictive psychostimulant abused worldwide. Ample evidence indicate that chronic abuse of Meth induces neurotoxicity via microglia-associated neuroinflammation and the activated microglia present in both Meth-administered animals and human abusers. The development of anti-neuroinflammation as a therapeutic strategy against Meth dependence promotes research to identify inflammatory pathways that are specifically tied to Meth-induced neurotoxicity. Currently, the exact mechanisms for Meth-induced microglia activation are largely unknown...
June 2018: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
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