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https://www.readbyqxmd.com/read/28340148/characteristics-of-hookah-tobacco-smoking-sessions-and-correlates-of-use-frequency-among-us-adults-findings-from-wave-1-of-the-population-assessment-of-tobacco-and-health-path-study
#1
Joelle Robinson, Baoguang Wang, Kia Jackson, Elisabeth Donaldson, Chase Ryant
Introduction: Hookah tobacco smoking has increased in the US. However, information on hookah use frequency and other characteristics of hookah use is limited. Methods: Investigators analyzed data from Wave 1 of the Population Assessment of Tobacco and Health (PATH) Study, a nationally representative, longitudinal cohort study of US youth and adults. Our analysis draws on baseline data from adult (ages ≥18 years) ever (N=10,624) and past year (n=3,947) hookah users...
March 9, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28340053/does-the-regulatory-environment-for-e-cigarettes-influence-the-effectiveness-of-e-cigarettes-for-smoking-cessation-longitudinal-findings-from-the-itc-four-country-survey
#2
Hua-Hie Yong, Sara C Hitchman, K Michael Cummings, Ron Borland, Shannon M L Gravely, Ann McNeill, Geoffrey T Fong
Introduction: To date, no studies have explored how different regulatory environments may influence the effectiveness of ECs as a smoking cessation aid. Objective: This study compares the real-world effectiveness of adult smokers using ECs for quitting compared with quitting unassisted or quitting with NRT and/or prescription medications in two countries with restrictive policies towards ECs (i.e., Canada and Australia) versus two countries with less restrictive policies (i...
March 4, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28340034/estimating-demand-and-cross-price-elasticity-for-very-low-nicotine-content-vlnc-cigarettes-using-a-simulated-demand-task
#3
Megan R Tucker, Murray Laugesen, Randolph C Grace
Introduction: Very Low Nicotine Content (VLNC) cigarettes might be useful as part of a tobacco control strategy, but relatively little is known about their acceptability as substitutes for regular cigarettes. We compared subjective effects and demand for regular cigarettes and Very Low Nicotine Content (VLNC) cigarettes, and estimated cross-price elasticity for VLNC cigarettes, using simulated demand tasks. Methods: 40 New Zealand smokers sampled a VLNC cigarette and completed Cigarette Purchase Tasks to indicate their demand for regular cigarettes and VLNC cigarettes at a range of prices, and a cross-price task indicating how many regular cigarettes and VLNC cigarettes they would purchase at 0...
March 3, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28339924/the-trans-golgi-network-and-the-golgi-stacks-behave-independently-during-regeneration-after-brefeldin-a-treatment-in-tobacco-by-2-cells
#4
Yoko Ito, Kiminori Toyooka, Masaru Fujimoto, Takashi Ueda, Tomohiro Uemura, Akihiko Nakano
The trans-Golgi network (TGN) plays an essential role in intracellular membrane trafficking. In plant cells, recent live-cell imaging studies have revealed the dynamic behavior of the TGN independent from the Golgi apparatus. In order to better understand the relationships between the two organelles, we examined their dynamic responses to the reagent brefeldin A (BFA) and their recovery after BFA removal. Golgi markers responded to BFA similarly over a range of concentrations, whereas the behavior of the TGN was BFA concentration dependent...
February 21, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28339586/framing-tobacco-dependence-as-a-brain-disease-implications-for-policy-and-practice
#5
Kylie Morphett, Adrian Carter, Wayne Hall, Coral Gartner
Introduction: Like other forms of drug dependence, tobacco dependence is increasingly being described as a "chronic brain disease." The potential consequences of this medical labelling have been examined in relation to other addictions, but the implications for tobacco control have been neglected. Some have posited that biomedical conceptions of addiction will reduce stigma and increase uptake of efficacious treatments. Others have countered that it could increase stigma, reduce treatment seeking, and deter unassisted quitting...
January 21, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28339576/a-descriptive-report-of-electronic-cigarette-use-after-participation-in-a-community-based-tobacco-cessation-trial
#6
Elana Curry, Julianna M Nemeth, Amy Wermert, Sara Conroy, Abigail Shoben, Amy K Ferketich, Mary Ellen Wewers
Introduction: Smokers are using electronic cigarettes, also known as e-cigarettes, as a cessation aid, despite uncertainty about their efficacy. This report describes the association between use of e-cigarettes before and after cessation treatment and tobacco abstinence at 12 months. It also presents characteristics of e-cigarette users and reasons for use. Methods: A longitudinal observational secondary analysis of self-reported e-cigarette use was conducted among adult Appalachian smokers enrolled in a community-based tobacco dependence treatment trial (n = 217)...
January 21, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28338213/biochemical-model-of-c3-photosynthesis-applied-to-wheat-at-different-temperatures
#7
Viridiana Silva-Pérez, Robert T Furbank, Anthony G Condon, John R Evans
We examined the effects of leaf temperature on the estimation of maximal Rubisco capacity (Vcmax ) from gas exchange measurements of wheat leaves using a C3 photosynthesis model. Cultivars of spring wheat (Triticum aestivum (L)) and triticale (x Triticosecale Wittmack) were grown in a greenhouse or in the field and measured at a range of temperatures under controlled conditions in a growth cabinet (2 and 21 % O2 ) or in the field using natural diurnal variation in temperature, respectively. Published Rubisco kinetic constants for tobacco did not describe the observed CO2 response curves well as temperature varied...
March 24, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28336353/effectiveness-of-switching-smoking-cessation-medications-following-relapse
#8
Bryan W Heckman, K Michael Cummings, Karin A Kasza, Ron Borland, Jessica L Burris, Geoffrey T Fong, Ann McNeill, Matthew J Carpenter
INTRODUCTION: Nicotine dependence is a chronic disorder often characterized by multiple failed quit attempts (QAs). Yet, little is known about the sequence of methods used across multiple QAs or how this may impact future ability to abstain from smoking. This prospective cohort study examines the effectiveness of switching smoking-cessation medications (SCMs) across multiple QAs. METHODS: Adult smokers (aged ≥18 years) participating in International Tobacco Control surveys in the United Kingdom, U...
March 20, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28323506/emotional-and-psychosocial-factors-associated-with-drunkenness-and-the-use-of-tobacco-and-cannabis-in-adolescence-independent-or-interactive-effects
#9
Irene García-Moya, María José Ortiz Barón, Carmen Moreno
BACKGROUND: Although previous research has examined emotional and psychosocial factors associated with substance use, there is a paucity of studies examining both at the same time, and insufficient attention has been paid to how these factors may interact. OBJECTIVES: The aim of this study was to simultaneously examine the contributions from emotional (emotional control and depression) and psychosocial (peers' conventional behavior, peers' substance use and parent-child relationships) factors to drunkenness and the use of tobacco and cannabis in adolescence...
March 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28322450/patient-compliance-following-isolated-mandibular-fracture-repair
#10
J Paul Radabaugh, Adam Van Horn, Stephen A Chan, Jared M Shelton, Thomas J Gal
OBJECTIVE: Compliance with postoperative care in the maxillofacial trauma population often is considered poor. This lack of follow-up does not seem to be a function of decreased access to care but rather its anticipated lack of utilization. The goal of this study is to identify what factors are associated with increased compliance in postoperative management of mandible fractures. STUDY DESIGN: Retrospective cohort study. METHODS: Using Current Procedural Terminology codes to identify maxillofacial injuries requiring operative repair, a subset of isolated mandibular fractures was identified...
March 21, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28321046/tobacco-nitrosamine-nnk-increases-aldh-positive-cells-via-ros-wnt-signaling-pathway-in-a549-human-lung-cancer-cells
#11
Naoya Hirata, Shigeru Yamada, Yuko Sekino, Yasunari Kanda
Epidemiological studies suggest that lung cancer, which is a major cause of cancer death, has a critical association with cigarette smoking. Tobacco-specific nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) in cigarette smoke is a major risk factor for carcinogenesis. However, the mechanisms by which NNK promotes cancer development have not been fully elucidated. Growing evidence suggests that lung cancer originates from cancer stem cells (CSCs), which are a minor population of lung cancer cells...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28317259/a-prospective-study-of-the-substance-use-and-mental-health-outcomes-of-young-adult-former-and-current-cannabis-users
#12
Edmund Silins, Wendy Swift, Tim Slade, Barbara Toson, Bryan Rodgers, Delyse M Hutchinson
INTRODUCTION AND AIMS: The extent to which young adult former cannabis users fare better than infrequent users is unclear. We investigated the association between cannabis use status at age 23 and substance use and mental health outcomes at age 27. DESIGN AND METHODS: Data were from the 20+ year cohort of the PATH Through Life Study. Lifetime cannabis users (n = 1410) at age 23 were classified as former/occasional/regular users. Multivariable logistic regression was used to estimate the association between cannabis use status at age 23 and six outcomes assessed at age 27...
March 20, 2017: Drug and Alcohol Review
https://www.readbyqxmd.com/read/28315314/nicotine-promotes-cholangiocarcinoma-growth-in-xenograft-mice
#13
Allyson K Martínez, Kendal Jensen, Chad Hall, April O'Brien, Laurent Ehrlich, Tori White, Fanyin Meng, Tianhao Zhou, John Greene, Francesca Bernuzzi, Pietro Invernizzi, David E Dostal, Terry Lairmore, Gianfranco Alpini, Shannon Glaser
Nicotine, the main addictive substance in tobacco, is known to play a role in the development and/or progression of a number of malignant tumors. However, nicotine's involvement in the pathogenesis of cholangiocarcinoma is controversial. Therefore, we studied the effects of nicotine on the growth of cholangiocarcinoma cells in vitro and the progression of cholangiocarcinoma in a mouse xenograft model. The predominant subunit responsible for nicotine-mediated proliferation in normal and cancer cells, the α7 nicotinic acetylcholine receptor (α7-nAChR), was more highly expressed in human cholangiocarcinoma cell lines compared with normal human cholangiocytes...
March 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28300972/a-review-of-smartphone-apps-for-smoking-cessation-available-in-portuguese
#14
Taynara Dutra Batista Formagini, Rafaela Russi Ervilha, Nathália Munck Machado, Bárbara Any Bianchi Bottaro de Andrade, Henrique Pinto Gomide, Telmo Mota Ronzani
Smartphone apps are being developed as a complement to smoking cessation treatment. The current study aimed to analyze the content of available apps in Portuguese in two operational systems, Android and iOS. Fifty-one apps were found in iTunes and 600 in Google Play. Content evaluation included apps that focused on smoking cessation, with a total of 12 apps in iOS and 3 in Android. Each app was categorized according to its approach to smoking cessation and scored according to level of adherence to the Treating Tobacco Use and Dependence smoking cessation treatment guideline...
March 9, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28298165/high-throughput-patch-clamp-screening-in-human-%C3%AE-6-containing-nicotinic-acetylcholine-receptors
#15
Lucas C Armstrong, Glenn E Kirsch, Nikolai B Fedorov, Caiyun Wu, Yuri A Kuryshev, Abby L Sewell, Zhiqi Liu, Arianne L Motter, Carmine S Leggett, Michael S Orr
Nicotine, the addictive component of tobacco products, is an agonist at nicotinic acetylcholine receptors (nAChRs) in the brain. The subtypes of nAChR are defined by their α- and β-subunit composition. The α6β2β3 nAChR subtype is expressed in terminals of dopaminergic neurons that project to the nucleus accumbens and striatum and modulate dopamine release in brain regions involved in nicotine addiction. Although subtype-dependent selectivity of nicotine is well documented, subtype-selective profiles of other tobacco product constituents are largely unknown and could be essential for understanding the addiction-related neurological effects of tobacco products...
March 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28290528/nicotine-dependence-is-associated-with-functional-variation-in-fmo3-an-enzyme-that-metabolizes-nicotine-in-the-brain
#16
A M Teitelbaum, S E Murphy, G Akk, T B Baker, A Germann, L B von Weymarn, L J Bierut, A Goate, E D Kharasch, A J Bloom
A common haplotype of the flavin-containing monooxygenase gene FMO3 is associated with aberrant mRNA splicing, a twofold reduction in in vivo nicotine N-oxidation and reduced nicotine dependence. Tobacco remains the largest cause of preventable mortality worldwide. CYP2A6, the primary hepatic nicotine metabolism gene, is robustly associated with cigarette consumption but other enzymes contribute to nicotine metabolism. We determined the effects of common variants in FMO3 on plasma levels of nicotine-N-oxide in 170 European Americans administered deuterated nicotine...
March 14, 2017: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/28285208/predictors-of-tobacco-abstinence-in-outpatient-smokers-with-schizophrenia-or-bipolar-disorder-treated-with-varenicline-and-cognitive-behavioral-smoking-cessation-therapy
#17
Randi M Schuster, Corinne Cather, Gladys N Pachas, Haiyue Zhang, Kristina M Cieslak, Susanne S Hoeppner, David Schoenfeld, A Eden Evins
BACKGROUND: The estimated mortality gap between those with and without serious mental illness (SMI) is increasing, now estimated at 28years, which is largely due to smoking-related diseases. AIMS: We sought to identify predictors of 14-day continuous abstinence in stable outpatient smokers with SMI. METHOD: Adult smokers with schizophrenia spectrum (n=130) or bipolar disorder (n=23) were enrolled in a 12-week course of varenicline and cognitive-behavioral therapy for smoking cessation...
February 24, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28284355/tlr4-gene-polymorphism-associated-with-lifetime-cigarette-smoking-in-bipolar-disorder
#18
El-Hadi Zerdazi, José Oliveira, Florence Vorspan, Meriem Bennabi, Stéphane Jamain, Bruno Etain, Marion Leboyer, Ryad Tamouza, Frank Bellivier
Bipolar disorder (BD) is associated with an increased risk of tobacco dependence, the leading addictive substance worldwide. Toll-like receptor 4, a sensor of pathogens and of products of cellular stress and damage, is a major innate immune molecule and logical candidate gene for tobacco dependence in BD because (i) the involvement of TLR4 molecules in several substance use disorders has been suggested, (ii) and the association between the TLR4 gene and BD. We analysed herein the potential association between six TLR4 polymorphisms and lifetime tobacco smoking in 514 BD patients...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28280306/motivation-to-quit-smoking-and-acceptability-of-shocking-warnings-on-cigarette-packages-in-lebanon
#19
Nelly Layoun, Pascal Salameh, Mirna Waked, Z Aoun Bacha, Rony M Zeenny, Eric El Hitti, Isabelle Godin, Michèle Dramaix
INTRODUCTION: Health warnings on tobacco packages have been considered an essential pillar in filling the gap of knowledge and communicating the health risks of tobacco use to consumers. Our primary objective was to report the perception of smokers on the textual health warnings already appearing on tobacco packages in Lebanon versus shocking pictures about the health-related smoking consequences and to evaluate their impact on smoking behaviors and motivation. METHODS: A pilot cross-sectional study was undertaken between 2013 and 2015 in five hospitals in Lebanon...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28279662/in%C3%A2-vivo-interactions-between-%C3%AE-7-nicotinic-acetylcholine-receptor-and-nuclear-peroxisome-proliferator-activated-receptor-%C3%AE-implication-for-nicotine-dependence
#20
Asti Jackson, Deniz Bagdas, Pretal P Muldoon, Aron H Lichtman, F Ivy Carroll, Mark Greenwald, Michael F Miles, M Imad Damaj
Chronic tobacco use dramatically increases health burdens and financial costs. Limitations of current smoking cessation therapies indicate the need for improved molecular targets. The main addictive component of tobacco, nicotine, exerts its dependency effects via nicotinic acetylcholine receptors (nAChRs). Activation of the homomeric α7 nAChR reduces nicotine's rewarding properties in conditioned place preference (CPP) test and i.v. self-administration models, but the mechanism underlying these effects is unknown...
March 7, 2017: Neuropharmacology
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