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https://www.readbyqxmd.com/read/29667304/inhibition-of-alpha7-nicotinic-receptors-in-the-ventral-hippocampus-selectively-attenuates-reinstatement-of-morphine-conditioned-place-preference-and-associated-changes-in-ampa-receptor-binding
#1
Victoria L Wright, Polymnia Georgiou, Alexis Bailey, David J Heal, Christopher P Bailey, Susan Wonnacott
Recurrent relapse is a major problem in treating opiate addiction. Pavlovian conditioning plays a role in recurrent relapse whereby exposure to cues learned during drug intake can precipitate relapse to drug taking. α7 nicotinic acetylcholine receptors (nAChRs) have been implicated in attentional aspects of cognition and mechanisms of learning and memory. In this study we have investigated the role of α7 nAChRs in morphine-conditioned place preference (morphine-CPP). CPP provides a model of associative learning that is pertinent to associative aspects of drug dependence...
April 17, 2018: Addiction Biology
https://www.readbyqxmd.com/read/29667248/establishment-of-a-radiotelemetric-recording-technique-in-mice-to-investigate-gastric-slow-waves-modulatory-role-of-putative-neurotransmitter-systems
#2
Huichuan Wang, Zengbing Lu, Yuen Hang Liu, Yayi Sun, Longlong Tu, Man P Ngan, Chi-Kong Yeung, John A Rudd
NEW FINDINGS: What is the central question of this study? Gastric slow waves originating from interstitial cells of Cajal-smooth muscle syncytium are usually studied in culture or in tissue segments, but no studies have made recording of slow waves from conscious freely moving mice. Can radiotelemetry be used to record slow waves, and do they respond predictably to drug treatment? What is the main finding and its importance? Radiotelemetry may be used to record slow waves from conscious freely moving mice permitting an examination of drug action in vivo, which is critical to drug discovery projects characterizing drugs and metabolites on gastrointestinal function...
April 18, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29666375/association-and-cis-mqtl-analysis-of-variants-in-chrna3-a5-chrna7-chrnb2-and-chrnb4-in-relation-to-nicotine-dependence-in-a-chinese-han-population
#3
Qiang Liu, Haijun Han, Maiqiu Wang, Yinghao Yao, Li Wen, Keran Jiang, Yunlong Ma, Rongli Fan, Jiali Chen, Kunkai Su, Zhongli Yang, Wenyan Cui, Wenji Yuan, Xianzhong Jiang, Jingjing Li, Thomas J Payne, Jundong Wang, Ming D Li
Nicotine dependence (ND) is a worldwide health problem. Numerous genetic studies have demonstrated a significant association of variants in nicotinic acetylcholine receptors (nAChRs) with smoking behaviors. However, most of these studies enrolled only subjects of European or African ancestry. In addition, although an increasing body of evidence implies a causal connection of single-nucleotide polymorphisms (SNPs) and epigenetic regulation of gene expression, few studies of this issue have been reported. In this study, we performed both association and interaction analysis for 67 SNPs in CHRNA3-A5, CHRNA7, CHRNB2, and CHRNB4 with ND in a Chinese Han population (N = 5055)...
April 18, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29665609/-smoking-behaviour-among-patients-and-staff-of-a-psychiatric-hospital-two-independent-surveys-in-2007-and-2015
#4
Julia Grempler, Tilman Steinert, Petra Schmid
OBJECTIVE: In order to evaluate the prevalence and smoking behaviour in a psychiatric hospital two independent surveys in 2007 (t1) and 2015 (t2) were carried out before and after implementing strategies to protect non-smokers and to offer assistance to stop smoking. METHODS: In two cross-sectional surveys all in-patients and staff of the Centre for Psychiatry Ravensburg-Bodensee were interviewed by questionnaire. RESULTS: The prevalence of smoking among patients was very high at both time points with 59 % (t1) and 57 % (t2), respectively...
April 17, 2018: Psychiatrische Praxis
https://www.readbyqxmd.com/read/29665494/isolation-and-characterization-of-the-cotinine-degrading-bacterium-nocardioides-sp-strain-jq2195
#5
Jiguo Qiu, Yanting Zhang, Lingling Zhao, Qin He, Jiandong Jiang, Qing Hong, Jian He
Cotinine, the primary nicotine metabolite, not only more stable and more difficult to degrade in the environment but is a potential health risk to human. To date, little is known about the biodegradation process of cotinine. In this study, a bacterial strain JQ2195 was isolated from municipal wastewater and was identified as Nocardioides sp. based on morphological, physiological characteristics, and 16 S rRNA gene phylogenetic analysis. This strain utilized cotinine as a sole carbon source and degraded 0...
April 10, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29665360/alpha7-nicotinic-acetylcholine-receptor-activation-protects-against-myocardial-reperfusion-injury-through-modulation-of-autophagy
#6
Zuoxu Hou, Yaguang Zhou, Hongyan Yang, Yan Liu, Xuechao Mao, Xinghua Qin, Xiaoliang Li, Xing Zhang, Yuanyuan Hu
Alpha7 nicotinic acetylcholine receptor (α7nAChR) activation alleviates myocardial ischemia/reperfusion (MI/R) injury. However, the underlying mechanisms remain unclear. Here, we investigated the role of autophagy in α7nAChR-mediated cardioprotection and the molecular mechanisms involved. Activating α7nAChR with PNU-282987 at the initiation of reperfusion reduced myocardial infarct size in MI/R rats. PNU-282987 treatment also significantly inhibited MI/R-induced myocardial autophagy dysfunction as evidenced by the reduction of LC3-II/LC3-I ratio, Beclin-1 and p62 abundance...
April 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29664530/-clinical-practice-guidelines-for-smoking-cessation
#7
María Paz Corvalán B, Leonardo Véjar M, Claudia Bambs S, Juana Pavié G, Mónica Zagolin B, Jaime Cerda L
Considering that a high proportion of the Chilean general population smokes, the Chilean Society of Respiratory Diseases in collaboration with the Chilean Societies of Cardiology and, Endocrinology and Diabetes, formed an interdisciplinary group, who issued a set of recommendations for the treatment of the smoker, methodologically advised by experts. These interventions should be prioritized in high-risk groups. Methods The panel elaborated and graded the recommendations following the GRADE methodology. To assess the effect of each intervention, systematic reviews and randomized clinical trials were identified...
November 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/29664277/nerve-agents-what-they-are-how-they-work-how-to-counter-them
#8
Stefano Costanzi, John-Hanson Machado, Moriah Mitchell
Nerve agents are organophosphorus chemical warfare agents that exert their action through the irreversible inhibition of acetylcholinesterase, with a consequent overstimulation of cholinergic transmission followed by its shutdown. Beyond warfare, they have notoriously been employed in acts of terrorism as well as high profile assassinations. After a brief historical introduction on the development and deployment of nerve agents, this review provides a survey of their chemistry, the way they affect cholinergic transmission, the available treatment options, and the current directions for their improvement...
April 17, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29664119/e-cigarettes-vaping-and-performativity-in-the-context-of-tobacco-denormalisation
#9
Mark Lucherini, Catriona Rooke, Amanda Amos
E-cigarettes are devices through which a nicotine solution is 'vapourised' and inhaled by the user. Unlike cigarettes, the process involves no tobacco combustion. However, the inhalation and exhalation of vapour is reminiscent of smoking and there is debate about the possible harms and benefits of e-cigarette use, including the 'renormalisation' of smoking. Despite these debates, there has been little exploration into the embodied and semiotic similarities between smoking and vaping. This paper views the practices of vaping and smoking through the lens of performativity that is, the accumulation of meaning associated with the habits over time and space...
April 17, 2018: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29663982/nicotine-lozenges-in-the-relief-of-behaviorally-provoked-craving
#10
Mitchell Nides, Gilbert Marava Shanga, Amanda Bishop, William D Becker
OBJECTIVES: Environmental cues may precipitate nicotine cravings in smokers. We present 2 studies exploring the efficacy of nicotine mini lozenges to reduce nicotine craving in smokers following behavioral provocation. METHODS: Healthy smokers aged ≥18 years enrolled. In Study 1, participants were stratified by number of cigarettes smoked daily; Study 2 enrolled only heavy smokers. After an abstinence period, participants engaged in behavioral provocation to induce nicotine craving before receiving a nicotine mini lozenge (Study 1: 1...
May 1, 2018: American Journal of Health Behavior
https://www.readbyqxmd.com/read/29663646/isobaric-tag-based-protein-profiling-of-a-nicotine-treated-alpha7-nicotinic-receptor-null-human-haploid-cell-line
#11
Joao A Paulo, Steven P Gygi
Nicotinic acetylcholine receptors (nAChR), the primary cell surface targets of nicotine, have implications in various neurological disorders. Here we investigate the proteome-wide effects of nicotine on human haploid cell lines (wildtype HAP1 and α7KO-HAP1) to address differences in nicotine-induced protein abundance profiles between these cell lines. We performed an SPS-MS3-based TMT10-plex experiment arranged in a 2-3-2-3 design with two replicates for the untreated samples and three for the treated samples for each cell line...
April 16, 2018: Proteomics
https://www.readbyqxmd.com/read/29663387/muscarinic-and-nicotinic-acetylcholine-receptor-agonists-current-scenario-in-alzheimer-s-disease-therapy
#12
REVIEW
Stuti Verma, Ashwini Kumar, Timir Tripathi, Awanish Kumar
OBJECTIVES: Alzheimer's disease (AD) has become the primary cause of dementia. It shows a progressive cognitive dysfunction with degenerating neurons. Acetylcholine receptors (AChRs) propagate the cognitive ability and it consists of two primary members namely muscarinic (mAChRs) and nicotinic receptors (nAChRs). Where mAChRs is G-protein coupled receptor, (nAChRs) are ligand-gated ion channels. The conventional therapeutic regimen for AD consists of three acetylcholinestearse inhibitors while a single NMDA receptor antagonist...
April 16, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29661886/distinct-in-vivo-roles-of-secreted-app-ectodomain-variants-apps%C3%AE-and-apps%C3%AE-in-regulation-of-spine-density-synaptic-plasticity-and-cognition
#13
Max C Richter, Susann Ludewig, Alex Winschel, Tobias Abel, Charlotte Bold, Leonie R Salzburger, Susanne Klein, Kang Han, Sascha W Weyer, Ann-Kristina Fritz, Bodo Laube, David P Wolfer, Christian J Buchholz, Martin Korte, Ulrike C Müller
Increasing evidence suggests that synaptic functions of the amyloid precursor protein (APP), which is key to Alzheimer pathogenesis, may be carried out by its secreted ectodomain (APPs). The specific roles of APPsα and APPsβ fragments, generated by non-amyloidogenic or amyloidogenic APP processing, respectively, remain however unclear. Here, we expressed APPsα or APPsβ in the adult brain of conditional double knockout mice (cDKO) lacking APP and the related APLP2. APPsα efficiently rescued deficits in spine density, synaptic plasticity (LTP and PPF), and spatial reference memory of cDKO mice...
April 16, 2018: EMBO Journal
https://www.readbyqxmd.com/read/29661748/virtual-reality-cue-refusal-video-game-for-alcohol-and-cigarette-recovery-support-summative-study
#14
Mary Metcalf, Karen Rossie, Katie Stokes, Christina Tallman, Bradley Tanner
BACKGROUND: New technologies such as virtual reality, augmented reality, and video games hold promise to support and enhance individuals in addiction treatment and recovery. Quitting or decreasing cigarette or alcohol use can lead to significant health improvements for individuals, decreasing heart disease risk and cancer risks (for both nicotine and alcohol use), among others. However, remaining in recovery from use is a significant challenge for most individuals. OBJECTIVE: We developed and assessed the Take Control game, a partially immersive Kinect for Windows platform game that allows users to counter substance cues through active movements (hitting, kicking, etc)...
April 16, 2018: JMIR Serious Games
https://www.readbyqxmd.com/read/29661542/helping-patients-with-esrd-and-earlier-stages-of-ckd-to-quit-smoking
#15
REVIEW
Perry Formanek, Elizabeth Salisbury-Afshar, Majid Afshar
Among the many adverse effects of tobacco exposure is the increased risk for progression of kidney disease. Individuals with chronic kidney disease (CKD), who already face increased cardiovascular event rates compared to the general population, are at even greater risk if they smoke. Despite these risks and the increased focus on smoking cessation in the general population in recent years, national guidelines have not specifically targeted individuals with CKD. There are similarly sparse data specific to individuals with CKD regarding the safety and efficacy of evidence-based smoking cessation modalities...
April 13, 2018: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29661189/origins-in-the-usa-in-the-1980s-of-the-warning-that-smokeless-tobacco-is-not-a-safe-alternative-to-cigarettes-a-historical-documents-based-assessment-with-implications-for-comparative-warnings-on-less-harmful-tobacco-nicotine-products
#16
Lynn T Kozlowski
BACKGROUND: Before the 1980s in the USA, smokeless tobacco carried no health warnings, was not judged to cause disease, and was a declining practice. In 1986, the federal government passed legislation requiring rotating warnings on "mouth cancer," "gum disease and tooth loss," and "This product is not a safe alternative to cigarettes." This paper explores the history of the establishment of these warnings with emphasis on the 'not a safe alternative' warning and the bases for claiming that smokeless was 'not safe' (absolute harm) versus 'not safer than cigarettes' (relative harm)...
April 16, 2018: Harm Reduction Journal
https://www.readbyqxmd.com/read/29661129/spidr-small-molecule-peptide-influenced-drug-repurposing
#17
Matthew D King, Thomas Long, Daniel L Pfalmer, Timothy L Andersen, Owen M McDougal
BACKGROUND: Conventional de novo drug design is costly and time consuming, making it accessible to only the best resourced research organizations. An emergent approach to new drug development is drug repurposing, in which compounds that have already gone through some level of clinical testing are examined for efficacy against diseases divergent than their original application. Repurposing of existing drugs circumvents the time and considerable cost of early stages of drug development, and can be accelerated by using software to screen existing chemical databases to identify suitable drug candidates...
April 16, 2018: BMC Bioinformatics
https://www.readbyqxmd.com/read/29660616/intestinal-damage-neurotoxicity-and-biochemical-responses-caused-by-tris-2-chloroethyl-phosphate-and-tricresyl-phosphate-on-earthworm
#18
Yang Yang, Yao Xiao, Yeqian Chang, Yibin Cui, Göran Klobučar, Mei Li
Organophosphate esters (OPEs) draw growing concern about characterizing the potential risk on environmental health due to its wide usage and distribution. Two typical types of organophosphate esters (OPEs): tris (2-chloroethyl) phosphate (TCEP) and tricresyl phosphate (TCP) were selected to evaluate toxicity of OPEs to the soil organism like earthworm (Eisenia fetida). Histopathological examination (H&E), oxidative stress, DNA damage and RT-qPCR was used to identify the effects and potential mechanism of their toxicity...
April 13, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29660438/prenatal-nicotine-exposure-intergenerationally-programs-imperfect-articular-cartilage-via-histone-deacetylation-through-maternal-lineage
#19
Zhe Xie, Zhe Zhao, Xu Yang, Linguo Pei, Hanwen Luo, Qubo Ni, Bin Li, Yongjian Qi, Kai Tie, Jacques Magdalou, Liaobin Chen, Hui Wang
Accumulating evidence has shown that the impact of prenatal environmental factors on the organs of the offspring could last until the adulthood. Here, we aimed to investigate these effects and the potential mechanism of prenatal nicotine exposure (PNE) on the female adult cartilage of the first generation (PNE-F1) and the second generation (PNE-F2). Pregnant Wistar rats were injected with 2.0 mg/kg.d nicotine from gestational day (GD) 9 to 20. Then their F1 generation at GD20 and postnatal week (PW) 12, and F2 generation at PW12 were harvested...
April 13, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29660237/multiplexed-isobaric-tag-based-profiling-of-seven-murine-tissues-following-in-vivo-nicotine-treatment-using-a-minimalistic-proteomics-strategy
#20
Joao A Paulo, Mark P Jedrychowski, Edward T Chouchani, Lawrence Kazak, Steven P Gygi
Nicotine is a major addictive compound in tobacco and a component of smoking-related products, such as e-cigarettes. Once internalized, nicotine can perturb many cellular pathways and can induce alterations in proteins across different cell types, however the mechanisms thereof remain undetermined. We hypothesize that both tissue-specific and global protein abundance alterations result from nicotine exposure. As such, we present the first proteome analysis of multiple tissues from nicotine-exposed mice. We treat mice via oral administration of nicotine at 200μg/mL in drinking water for 21 days...
April 16, 2018: Proteomics
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