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Addiction Science to Practice

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6 papers 0 to 25 followers The accurate definition and description of addiction, as a biopsychsocial BRAIN disease,is the base of this collection of research & reviews with an immediate implication for clinical practice or all disciplines.
https://www.readbyqxmd.com/read/27890469/methamphetamine-addiction-vulnerability-the-glutamate-the-bad-and-the-ugly
#1
Karen K Szumlinski, Kevin D Lominac, Rianne R Campbell, Matan Cohen, Elissa K Fultz, Chelsea N Brown, Bailey W Miller, Sema G Quadir, Douglas Martin, Andrew B Thompson, Georg von Jonquieres, Matthias Klugmann, Tamara J Phillips, Tod E Kippin
BACKGROUND: The high prevalence and severity of methamphetamine (MA) abuse demands greater neurobiological understanding of its etiology. METHODS: We conducted immunoblotting and in vivo microdialysis procedures in MA high/low drinking mice, as well as in isogenic C57BL/6J mice that varied in their MA preference/taking, to examine the glutamate underpinnings of MA abuse vulnerability. Neuropharmacological and Homer2 knockdown approaches were also used in C57BL/6J mice to confirm the role for nucleus accumbens (NAC) glutamate/Homer2 expression in MA preference/aversion...
October 13, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28159647/alcohol-stress-and-glucocorticoids-from-risk-to-dependence-and-relapse-in-alcohol-use-disorders
#2
REVIEW
Sara K Blaine, Rajita Sinha
In this review, we detail the clinical evidence supporting the role of psychological and physiological stress in instrumental motivation for alcohol consumption during the development of mild to moderate alcohol use disorders (AUDs) and in the compulsive, habitual alcohol consumption seen in severe, chronic, relapsing AUDs. Traditionally, the study of AUDs has focused on the direct and indirect effects of alcohol on striatal dopaminergic pathways and their role in the reinforcing effects of alcohol. However, growing evidence also suggests that alcohol directly stimulates the hypothalamic pituitary adrenal (HPA) axis and has effects on glucocorticoid receptors in extrahypothalamic, limbic forebrain, and medial Prefrontal Cortex (PFC) circuits, which contribute to the development of AUDs and their progression in severity, chronicity, and relapse risk...
February 1, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/27851727/high-resolution-crystal-structure-of-the-human-cb1-cannabinoid-receptor
#3
Zhenhua Shao, Jie Yin, Karen Chapman, Magdalena Grzemska, Lindsay Clark, Junmei Wang, Daniel M Rosenbaum
The human cannabinoid G-protein-coupled receptors (GPCRs) CB1 and CB2 mediate the functional responses to the endocannabinoids anandamide and 2-arachidonyl glycerol (2-AG), as well as the widely consumed plant (phyto)cannabinoid Δ(9)-tetrahydrocannabinol (THC)(1). The cannabinoid receptors have been the targets of intensive drug discovery efforts owing to the therapeutic potential of modulators for controlling pain(2), epilepsy(3), obesity(4), and other maladies. Although much progress has recently been made in understanding the biophysical properties of GPCRs, investigations of the molecular mechanisms of the cannabinoids and their receptors have lacked high-resolution structural data...
November 16, 2016: Nature
https://www.readbyqxmd.com/read/27323623/-effect-of-small-knife-needle-on-%C3%AE-enorpin-and-enkehalin-contents-of-tansverse-process-syndrome-of-the-third-vertebra
#4
Nai-gang Liu, Chang-qing Guo, Hong-mei Sun, Xiao-hong Li, Hai-xia Wu, Hong Xu
OBJECTIVE: To explore the analgesic mechanism of small knife needle for treating transverse process syndrome of the third vertebra (TPSTV) by observing peripheral and central changesof β-endorphin (β-EP) and enkephalin (ENK) contents. METHODS: Totally 30 Japanese white big-ear rabbits of clean grade were divided into 5 groups according to random digit table, i.e., the normal control group, the model group, the small knife needle group, the electroacupunture (EA) group, and the small knife needle plus EA group, 6 in each group...
April 2016: Chinese Journal of Integrated Traditional and Western Medicine
https://www.readbyqxmd.com/read/26586182/sufficiency-of-mesolimbic-dopamine-neuron-stimulation-for-the-progression-to-addiction
#5
Vincent Pascoli, Jean Terrier, Agnès Hiver, Christian Lüscher
The factors causing the transition from recreational drug consumption to addiction remain largely unknown. It has not been tested whether dopamine (DA) is sufficient to trigger this process. Here we use optogenetic self-stimulation of DA neurons of the ventral tegmental area (VTA) to selectively mimic the defining commonality of addictive drugs. All mice readily acquired self-stimulation. After weeks of abstinence, cue-induced relapse was observed in parallel with a potentiation of excitatory afferents onto D1 receptor-expressing neurons of the nucleus accumbens (NAc)...
December 2, 2015: Neuron
https://www.readbyqxmd.com/read/27277868/time-to-connect-bringing-social-context-into-addiction-neuroscience
#6
REVIEW
Markus Heilig, David H Epstein, Michael A Nader, Yavin Shaham
Research on the neural substrates of drug reward, withdrawal and relapse has yet to be translated into significant advances in the treatment of addiction. One potential reason is that this research has not captured a common feature of human addiction: progressive social exclusion and marginalization. We propose that research aimed at understanding the neural mechanisms that link these processes to drug seeking and drug taking would help to make addiction neuroscience research more clinically relevant.
2016: Nature Reviews. Neuroscience
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