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https://www.readbyqxmd.com/read/28542301/electronic-cigarette-aerosols-suppress-cellular-antioxidant-defenses-and-induce-significant-oxidative-dna-damage
#1
Vengatesh Ganapathy, Jimmy Manyanga, Lacy Brame, Dehra McGuire, Balaji Sadhasivam, Evan Floyd, David A Rubenstein, Ilangovan Ramachandran, Theodore Wagener, Lurdes Queimado
BACKGROUND: Electronic cigarette (EC) aerosols contain unique compounds in addition to toxicants and carcinogens traditionally found in tobacco smoke. Studies are warranted to understand the public health risks of ECs. OBJECTIVE: The aim of this study was to determine the genotoxicity and the mechanisms induced by EC aerosol extracts on human oral and lung epithelial cells. METHODS: Cells were exposed to EC aerosol or mainstream smoke extracts and DNA damage was measured using the primer anchored DNA damage detection assay (q-PADDA) and 8-oxo-dG ELISA assay...
2017: PloS One
https://www.readbyqxmd.com/read/28537463/plant-bax-inhibitor-1-interacts-with-atg6-to-regulate-autophagy-and-programmed-cell-death
#2
Guoyong Xu, Shanshan Wang, Shaojie Han, Ke Xie, Yan Wang, Jinlin Li, Yule Liu
Autophagy is an evolutionarily conserved catabolic process and is involved in the regulation of programmed cell death during the plant immune response. However, mechanisms regulating autophagy and cell death are incompletely understood. Here, we demonstrate that plant Bax inhibitor-1 (BI-1), a highly conserved cell death regulator, interacts with ATG6, a core autophagy-related protein. Silencing of BI-1 reduced the autophagic activity induced by both N gene-mediated resistance to Tobacco mosaic virus (TMV) and methyl viologen (MV), and enhanced N gene-mediated cell death...
May 24, 2017: Autophagy
https://www.readbyqxmd.com/read/28535764/in-smokers-sonic-hedgehog-modulates-pulmonary-endothelial-function-through-vascular-endothelial-growth-factor
#3
Priscilla Henno, Stanislas Grassin-Delyle, Emeline Belle, Marion Brollo, Emmanuel Naline, Edouard Sage, Philippe Devillier, Dominique Israël-Biet
BACKGROUND: Tobacco-induced pulmonary vascular disease is partly driven by endothelial dysfunction. The Sonic hedgehog (SHH) pathway is involved in vascular physiology. We sought to establish whether the SHH pathway has a role in pulmonary endothelial dysfunction in smokers. METHODS: The ex vivo endothelium-dependent relaxation of pulmonary artery rings in response to acetylcholine (Ach) was compared in 34 current or ex-smokers and 8 never-smokers. The results were expressed as a percentage of the contraction with phenylephrine...
May 23, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28531251/ca2-dependent-phosphoregulation-of-the-plasma-membrane-ca2-atpase-aca8-modulates-stimulus-induced-calcium-signatures
#4
Alex Costa, Laura Luoni, Claudia Adriana Marrano, Kenji Hashimoto, Philipp Köster, Sonia Giacometti, Maria Ida De Michelis, Jörg Kudla, Maria Cristina Bonza
Ca2+ signals are transient, hence, upon a stimulus-induced increase in cytosolic Ca2+ concentration, cells have to re-establish resting Ca2+ levels. Ca2+ extrusion is operated by a wealth of transporters, such as Ca2+ pumps and Ca2+/H+ antiporters, which often require a rise in Ca2+ concentration to be activated. Here, we report a regulatory fine-tuning mechanism of the Arabidopsis thaliana plasma membrane-localized Ca2+-ATPase isoform ACA8 that is mediated by calcineurin B-like protein (CBL) and CBL-interacting protein kinase (CIPK) complexes...
May 20, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28528227/treatment-non-response-associations-with-smoking-expectancies-among-treatment-seeking-smokers
#5
Lorra Garey, Samar A Taha, Brooke Y Kauffman, Kara F Manning, Clayton Neighbors, Norman B Schmidt, Michael J Zvolensky
Despite the high rate of smoking cessation treatment non-response, relatively little empirical work has examined predictors of treatment non-response. The present study sought to explore the effect of smoking outcome expectancies on treatment response in a sample of treatment-seeking adult daily smokers (N=182; 53.3% female; Mage=40.67; SD=13.63). Results indicated that expectancies for smoking to reduce negative affect were related to an increased likelihood of treatment non-response (OR=0.73, CI: 0.54, 0...
May 9, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28527122/effects-of-cigarette-smoke-exposure-during-suckling-on-food-intake-fat-mass-hormones-and-biochemical-profile-of-young-and-adult-female-rats
#6
Patricia Cristina Lisboa, Patricia Novaes Soares, Thamara Cherem Peixoto, Janaine Cavalcanti Carvalho, Camila Calvino, Vanessa Silva Tavares Rodrigues, Dayse Nascimento Bernardino, Viviane Younes-Rapozo, Alex Christian Manhães, Elaine de Oliveira, Egberto Gaspar de Moura
PURPOSE: Children from smoking mothers have a higher risk of developing obesity and associated comorbidities later in life. Different experimental models have been used to assess the mechanisms involved with this increased risk. Using a rat model of neonatal nicotine exposure via implantation of osmotic minipumps in lactating dams, we have previously shown marked sexual dimorphisms regarding metabolic and endocrine outcomes in the adult progeny. Considering that more than four thousand substances are found in tobacco smoke besides nicotine, we then studied a rat model of neonatal tobacco smoke exposure: adult male offspring had hyperphagia, obesity, hyperglycemia, hypertriglyceridemia, secondary hyperthyroidism and lower adrenal hormones...
May 19, 2017: Endocrine
https://www.readbyqxmd.com/read/28525612/an-effectiveness-hierarchy-of-preventive-interventions-neglected-paradigm-or-self-evident-truth
#7
Simon Capewell, Ann Capewell
Non-communicable disease prevention strategies usually target the four major risk factors of poor diet, tobacco, alcohol and physical inactivity. Yet, the most effective approaches remain disputed. However, increasing evidence supports the concept of an effectiveness hierarchy. Thus, 'downstream' preventive activities targeting individuals (such as 1:1 personal advice, health education, 'nudge' or primary prevention medications) consistently achieve a smaller population health impact than interventions aimed further 'upstream' (for instance, smoke-free legislation, alcohol minimum pricing or regulations eliminating dietary transfats)...
May 19, 2017: Journal of Public Health
https://www.readbyqxmd.com/read/28525537/the-influence-of-smoking-and-smokeless-tobacco-on-the-progression-severity-and-treatment-outcome-in-alcohol-dependent-individuals
#8
Kerstin K Rauwolf, Kristina J Berglund, Ulf Berggren, Jan Balldin, Claudia Fahlke
Aims: The influence of tobacco use in alcohol-dependent individuals is not well understood, especially the role of snuffing, which is common in Northern Europe. The aim was therefore to investigate the influence of smoking and snuffing on the progression, severity and treatment outcome in alcohol-dependent individuals. The hypotheses were that concomitant tobacco use (i.e. smoking or snuffing) would enhance the progression and severity of alcohol dependence and be less beneficial for treatment outcome, relative to tobacco non-users...
May 19, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28523930/inactivation-of-tobacco-mosaic-virus-using-gamma-irradiation-and-its-potential-modes-of-action
#9
R-D Jeong, H-S Choi
Gamma irradiation is a non-thermal processing technique used to disinfect harmful microorganisms in agriculture. This technology has been shown to be an effective method to control bacterial and fungal plant pathogens. However, its effect on viral plant pathogen is less understood. Gamma irradiation was evaluated for the inactivation of tobacco mosaic virus (TMV). TMV infectivity has gradually decreased following irradiation in a dose-dependent manner and virus was completely inactivated at a dose over 40 kGy...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28521241/cognitive-avoidance-and-aversive-cues-related-to-tobacco-in-male-smokers
#10
Ji Sun Hong, Sun Mi Kim, Hye Yeon Jung, Kyoung Doo Kang, Kyung Joon Min, Doug Hyun Han
BACKGROUND: Treatment using aversive conditioning has been suggested for smoking cessation. The efficacy of this method is thought to be associated with cognitive avoidance. We compare differences in avoidance traits and patterns of associated brain activation in response to cues that induce cravings versus aversion between smokers and non-smokers. METHODS: Fifteen smokers and fifteen non-smokers completed cue reactivity tasks while undergoing functional magnetic resonance imaging (fMRI) to examine brain responses to craving-inducing cues (Cr) and aversion-inducing cues (Av)...
May 11, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28520481/on-the-origins-of-the-electronic-cigarette-british-american-tobacco-s-project-ariel-1962-1967
#11
Stephan Risi
Electronic cigarettes are advertised as the latest technological gadget-the smoking equivalent of smart phones. I challenge this sense of novelty by tracing their history to the 1960s, when researchers at British American Tobacco first recognized that smokers' brains were dependent on nicotine. This discovery enabled British American Tobacco to develop a novel kind of smoking device under the codename "Ariel" between 1962 and 1967. Whereas filters were meant to eliminate specific harmful constituents of tobacco smoke, Project Ariel tried to reduce smoking to its alkaloid essence: nicotine...
May 18, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28515547/a-randomized-pilot-study-of-brief-intervention-versus-simple-advice-for-women-tobacco-users-in-an-urban-community-in-india
#12
Sonali Jhanjee, Rakesh Lal, Ashwami Mishra, Deepak Yadav
AIM: The study aimed to assess the efficacy of providing brief intervention (BI) for women tobacco users in a community-based setting. METHODS: In this open-labeled randomized study, a representative sample of women (n = 100) from a community in East Delhi were screened using Alcohol, Smoking and Substance Involvement Screening Test. Eligible women were randomized to BI or simple advice (SA) arms. At baseline, they were assessed for tobacco use characteristics and severity of nicotine dependence using Fagerstrom's test for nicotine dependence...
March 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28514963/patient-centered-primary-care-for-adults-at-high-risk-for-auds-the-choosing-healthier-drinking-options-in-primary-care-choice-trial
#13
Katharine A Bradley, Evette Joy Ludman, Laura J Chavez, Jennifer F Bobb, Susan J Ruedebusch, Carol E Achtmeyer, Joseph O Merrill, Andrew J Saxon, Ryan M Caldeiro, Diane M Greenberg, Amy K Lee, Julie E Richards, Rachel M Thomas, Theresa E Matson, Emily C Williams, Eric Hawkins, Gwen Lapham, Daniel R Kivlahan
BACKGROUND: Most patients with alcohol use disorders (AUDs) never receive alcohol treatment, and experts have recommended management of AUDs in primary care. The Choosing Healthier Drinking Options In primary CarE (CHOICE) trial was a randomized controlled effectiveness trial of a novel intervention for primary care patients at high risk for AUDs. This report describes the conceptual and scientific foundation of the CHOICE model of care, critical elements of the CHOICE trial design consistent with the Template for Intervention Description and Replication (TIDieR), results of recruitment, and baseline characteristics of the enrolled sample...
May 17, 2017: Addiction Science & Clinical Practice
https://www.readbyqxmd.com/read/28514694/the-association-of-prenatal-cocaine-exposure-externalizing-behavior-and-adolescent-substance-use
#14
Sonia Minnes, Meeyoung O Min, June-Yung Kim, Meredith W Francis, Adelaide Lang, Miaoping Wu, Lynn T Singer
Prenatal cocaine exposure (PCE) may increase adolescent substance use through alterations of neurotransmitter systems affecting fetal brain development. The relationship between PCE and substance use at 15 and 17 years was examined. Subjects (365: 186 PCE; 179 non-cocaine exposed (NCE)) supplied biologic and self-report data using the Youth Risk Behavior Surveillance System (YRBSS) and Computerized Diagnostic Interview Schedule for Children (C-DISC 4) at ages 15 and 17. The relationship between PCE and substance use was assessed using General Estimating Equation (GEE) analyses controlling for confounding factors including violence exposure and preschool lead level...
March 24, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28511099/the-social-exigencies-of-the-gateway-progression-to-the-use-of-illicit-drugs-from-adolescence-into-adulthood
#15
Roy Otten, Chung Jung Mun, Thomas J Dishion
BACKGROUND: There is limited empirical integration between peer clustering theory and the Gateway framework. The goal of the present study was to test the hypothesis that friendship associations partly predict gateway escalations in the use of drugs from adolescence to adulthood. METHOD: This longitudinal study analyzed 3 waves of data from a community sample of 711 male and female participants without a history of illicit drug use reporting drug use at age 17, 22, and 27...
May 11, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28508372/effect-of-second-hand-tobacco-smoke-on-the-nitration-of-brain-proteins-a-systems-biology-and-bioinformatics-approach
#16
Firas H Kobeissy, Joy Guingab-Cagmat, Adriaan W Bruijnzeel, Mark S Gold, Kevin Wang
Second-hand smoke (SHS) exposure leads to the death of approximately 48,000 nonsmokers per year in the United States alone. SHS exposure has been associated with cardiovascular, respiratory, and neurodegenerative diseases. While cardiac function abnormalities and lung cancer due to SHS have been well characterized, brain injury due to SHS has not undergone a full systematic evaluation. Oxidative stress and nitration have been associated with smoking and SHS exposure. Animal studies suggest that exposure to tobacco smoke increases oxidative stress...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28508171/over-expression-of-tobacco-ubc1-encoding-a-ubiquitin-conjugating-enzyme-increases-cadmium-tolerance-by-activating-the-20s-26s-proteasome-and-by-decreasing-cd-accumulation-and-oxidative-stress-in-tobacco-nicotiana-tabacum
#17
Ramin Bahmani, DongGwan Kim, Byoung Doo Lee, Seongbin Hwang
Ubiquitin (Ub)-conjugating enzyme (UBC, E2) receives Ub from Ub-activating enzyme (E1) and transfers it to target proteins, thereby playing a key role in Ub/26S proteasome-dependent proteolysis. UBC has been reported to be involved in tolerating abiotic stress in plants, including drought, salt, osmotic and water stresses. To isolate the genes involved in Cd tolerance, we transformed WT (wild-type) yeast Y800 with a tobacco cDNA expression library and isolated a tobacco cDNA, NtUBC1 (Ub-conjugating enzyme), that enhances cadmium tolerance...
May 15, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28508106/differential-effects-of-pair-housing-on-voluntary-nicotine-consumption-a-comparison-between-male-and-female-adolescent-rats
#18
Hyunchan Lee, Minji Jang, Woonhee Kim, Jihyun Noh
RATIONALE: Tobacco smoking occurs in a wide array of social circumstances. Social support for quitting is generally used to stop smoking, while peer interactions may be a crucial factor in triggering tobacco use among adolescents. OBJECTIVES: To determine the role of social factors on nicotine dependence, we compared single- and pair-housed rats subjected to voluntary oral nicotine consumption tests. METHODS: Six-week-old adolescent rats were subjected to experimental procedures and assigned to one of the following groups: a male single group, a male pair group with a sibling, a female single group, and a female pair group with a sibling...
May 15, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28507522/nicotine-acutely-enhances-reinforcement-from-non-drug-rewards-in-humans
#19
REVIEW
Kenneth A Perkins, Joshua L Karelitz, Margaret C Boldry
Preclinical research documents that, aside from the primary and secondary reinforcing effects of nicotine intake itself, nicotine also acutely enhances the reinforcing efficacy of non-drug reinforcers ("rewards"). Study of these effects in humans has largely been overlooked, but very recent findings suggest they may have clinical implications for more fully understanding the persistence of tobacco dependence. This overview first outlines the topic and notes some recent human studies indirectly addressing nicotine effects on related responses (e...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28506855/rates-and-risk-factors-for-opioid-dependence-and-overdose-after-urologic-surgery
#20
Arpeet S Shah, Robert H Blackwell, Paul C Kuo, Gopal N Gupta
INTRODUCTION: Effective pain management is a critical component of the perioperative process, with opioids representing a mainstay of therapy. The opioid epidemic is a growing concern in the United States. The goal of this study was to quantify the risk of opioid dependence or overdose (ODO) among patients undergoing urologic surgery and to identify risk factors of ODO. METHODS: A retrospective review of urologic surgery from 2007-2011. Data sources included the Healthcare Cost and Utilization Project Inpatient, Ambulatory Surgery, and Emergency Department datasets...
May 12, 2017: Journal of Urology
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