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Smoke toxicity

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https://www.readbyqxmd.com/read/28525914/cigarette-filter-ventilation-and-its-relationship-to-increasing-rates-of-lung-adenocarcinoma
#1
Min-Ae Song, Neal L Benowitz, Micah Berman, Theodore M Brasky, K Michael Cummings, Dorothy K Hatsukami, Catalin Marian, Richard O'Connor, Vaughan W Rees, Casper Woroszylo, Peter G Shields
The 2014 Surgeon General's Report on smoking and health concluded that changing cigarette designs have caused an increase in lung adenocarcinomas, implicating cigarette filter ventilation that lowers smoking machine tar yields. The Food and Drug Administration (FDA) now has the authority to regulate cigarette design if doing so would improve public health. To support a potential regulatory action, two weight-of-evidence reviews were applied for causally relating filter ventilation to lung adenocarcinoma. Published scientific literature (3284 citations) and internal tobacco company documents contributed to causation analysis evidence blocks and the identification of research gaps...
December 1, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28524757/wood-smoke-exposure-of-portuguese-wildland-firefighters-dna-and-oxidative-damage-evaluation
#2
Ana Abreu, Carla Costa, Susana Pinho E Silva, Simone Morais, Maria do Carmo Pereira, Adília Fernandes, Vanessa Moraes de Andrade, João Paulo Teixeira, Solange Costa
Portugal is among the European Union countries most devastated by forest fires each year. In the last three decades, more than 3.8 million hectares of forest were burned. Wildland firefighters are exposed to a variety of hazards, including many toxic combustion products that may lead to deleterious health effects. Epidemiological studies showed a positive association between firefighting and several chronic diseases, including cancer. Results from biomonitoring studies in firefighters, particularly concerning genotoxicity evaluation, constitute a valuable tool for investigating important occupational hazards...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28522559/pulmonary-toxicity-of-e-cigarettes
#3
Lauren F Chun, Farzad Moazed, Carolyn S Calfee, Michael A Matthay, Jeffrey Earl Gotts
Electronic cigarettes (e-cigarettes or e-cigs) are designed to heat and aerosolize mixtures of vegetable glycerin, propylene glycol, nicotine and flavoring additives, thus delivering nicotine by inhalation in the absence of combustion. These devices were originally developed to facilitate smoking cessation and have been available in the United States for over a decade. Since 2010, e-cig use has expanded rapidly, especially among adolescents, despite a paucity of short and long-term safety data. Patterns of use have shifted to include never-smokers and many dual users of e-cigs and combustible tobacco products...
May 18, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28521063/effective-message-elements-for-disclosures-about-chemicals-in-cigarette-smoke
#4
Dannielle E Kelley, Marcella H Boynton, Seth M Noar, Jennifer C Morgan, Jennifer R Mendel, Kurt M Ribisl, Irina Stepanov, Leena A Nylander-French, Noel T Brewer
Introduction: Cigarette smoke contains at least 93 chemicals or "constituents" that the Food and Drug Administration (FDA) has identified as harmful or potentially harmful to human health. Our study sought to identify which constituent disclosure message elements are most effective in discouraging people from smoking. Methods: Three hundred eighty-eight current smokers ages 18 and older completed an online survey in February 2015. We randomized participants to respond to one of two sets of 13 toxic products that contain cigarette constituents and 25 health effects associated with cigarette constituents...
May 17, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28512706/cyanides-in-the-environment-analysis-problems-and-challenges
#5
Ewa Jaszczak, Żaneta Polkowska, Sylwia Narkowicz, Jacek Namieśnik
Cyanide toxicity and their environmental impact are well known. Nevertheless, they are still used in the mining, galvanic and chemical industries. As a result of industrial activities, cyanides are released in various forms to all elements of the environment. In a natural environment, cyanide exists as cyanogenic glycosides in plants seeds. Too much consumption can cause unpleasant side effects. However, environmental tobacco smoke (ETS) is the most common source of cyanide. Live organisms have the ability to convert cyanide into less toxic compounds excreted with physiological fluids...
May 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28506761/the-decline-in-kidney-function-with-chromium-exposure-is-exacerbated-with-co-exposure-to-lead-and-cadmium
#6
Tsung-Lin Tsai, Chin-Chi Kuo, Wen-Harn Pan, Yu-Teh Chung, Chiu-Ying Chen, Trong-Neng Wu, Shu-Li Wang
Environmental factors contribute significantly to the pathogenesis of chronic kidney disease. However, these factors, and particularly the toxic effects of heavy metals, have not been completely evaluated. Chromium is a widespread industrial contaminant that has been linked to nephrotoxicity in animal and occupational population studies. Nevertheless, its role in population renal health and its potential interactions with other nephrotoxic metals, such as lead and cadmium, remain unknown. We assessed the association between exposure to chromium, lead, and cadmium with renal function using estimated glomerular filtration rate (eGFR) in an analysis of 360 Taiwanese adults aged 19-84 years from the National Nutrition and Health Survey in Taiwan (2005-2008)...
May 12, 2017: Kidney International
https://www.readbyqxmd.com/read/28506727/-differences-and-similarities-between-occupational-and-tobacco-induced-copd
#7
REVIEW
T Soumagne, D Caillaud, B Degano, J-C Dalphin
Chronic obstructive pulmonary disease (COPD) most often results from the inhalation of toxic agents. Cigarette smoking still remains the principal cause but the pertinence of occupational COPD is now clearly established. After a brief overview of the epidemiology of this "other COPD", the clinical and functional characteristics are summarized, taking into account recent advances in this field. The combined effects of occupational exposure and tobacco are also considered, providing evidence of the need to continuously reinforce campaigns of education and prevention in occupational COPD...
May 12, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28502841/use-of-airway-epithelial-cell-culture-to-unravel-the-pathogenesis-and-study-treatment-in-obstructive-airway-diseases
#8
REVIEW
Tinne C J Mertens, Harry Karmouty-Quintana, Christian Taube, Pieter S Hiemstra
Asthma and chronic obstructive pulmonary disease (COPD) are considered as two distinct obstructive diseases. Both chronic diseases share a component of airway epithelial dysfunction. The airway epithelium is localized to deal with inhaled substances, and functions as a barrier preventing penetration of such substances into the body. In addition, the epithelium is involved in the regulation of both innate and adaptive immune responses following inhalation of particles, allergens and pathogens. Through triggering and inducing immune responses, airway epithelial cells contribute to the pathogenesis of both asthma and COPD...
May 11, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28500491/hyperfractionated-accelerated-radiation-therapy-plus-cetuximab-plus-cisplatin-chemotherapy-in-locally-advanced-inoperable-squamous-cell-carcinoma-of-the-head-and-neck-final-5%C3%A2-year-results-of-a-phase%C3%A2-ii-study
#9
Thomas Kuhnt, Andreas Schreiber, Anett Pirnasch, Matthias G Hautmann, Peter Hass, Frank P Sieker, Rita Engenhart-Cabillic, Michael Richter, Kathrin Dellas, Jürgen Dunst
BACKGROUND: Cetuximab (CET) is a potent inhibitor of the epidermal growth factor receptor and has been shown to have activity in squamous cell carcinoma of the head and neck (SCCHN). We conducted a single-arm phase II trial of a combination therapy comprising cisplatin (CIS), CET and hyperfractionated accelerated radiotherapy (HART). PATIENTS AND METHODS: Patients with UICC stage III or IVA/B, M0 SCCHN were enrolled and treated with an initial dose of CET (400 mg/m(2)) and then with a weekly dosage of 250 mg/m(2) during HART...
May 12, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28499662/-acute-toxicity-of-breast-cancer-irradiation-with-modulated-intensity-by-tomotherapy-%C3%A2
#10
N Aoulad, C Massabeau, B de Lafontan, L Vieillevigne, G Hangard, C Ciprian, L Chaltiel, É Moyal, F Izar
PURPOSE: Helical radiation intensity modulated by tomotherapy improves dose distribution to complex and large volumes. The aim of the study was to assess acute toxicity of this technique during breast cancer irradiation after conserving surgery or mastectomy. PATIENTS AND METHODS: Cutaneous toxicities, lung and oesophageal side effects, and breast lymphedema were retrospectively collected according to the Common Terminology Criteria for Adverse Events Version 4...
May 9, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28496992/flavored-little-cigar-smoke-induces-cytotoxicity-and-apoptosis-in-airway-epithelia
#11
Arunava Ghosh, Rachel C Nethery, Amy H Herring, Robert Tarran
Addition of flavors reduces the harsh taste of tobacco, facilitating the initiation and maintenance of addiction among youths. Flavored cigarettes (except menthol) are now banned. However, the legislation on little cigars remains unclear and flavored little cigars are currently available for purchase. Since inhaled tobacco smoke directly exerts toxic effects on the lungs, we tested whether non-flavored and flavored little cigar smoke exposure had the potential for harm in cultured pulmonary epithelia. We cultured Calu-3 lung epithelia on both 96-well plates and at the air-liquid interface and exposed them to smoke from non-flavored Swisher Sweets and flavored (sweet cherry, grape, menthol, peach and strawberry) Swisher Sweets little cigars...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28494310/a-novel-and-facile-strategy-for-highly-flame-retardant-polymer-foam-composite-materials-transforming-silicone-resin-coating-into-silica-self-extinguishing-layer
#12
Qian Wu, Qian Zhang, Li Zhao, Shi-Neng Li, Lian-Bin Wu, Jian-Xiong Jiang, Long-Cheng Tang
In this study, a novel strategy was developed to fabricate highly flame retardant polymer foam composite materials coated by synthesized silicone resin (SiR) polymer via a facile dip-coating processing. Applying the SiR polymer coating, the mechanical property and thermal stability of SiR-coated polymer foam (PSiR) composites are greatly enhanced without significantly altering their structure and morphology. The minimum oxygen concentration to support the combustion of foam materials is greatly increased, i...
April 27, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28488765/antitumoral-potential-antioxidant-activity-and-carotenoid-content-of-two-southern-italy-tomato-cultivars-extracts-san-marzano-and-corbarino
#13
Daniela Barone, Letizia Cito, Giuseppina Tommonaro, Agnese Anna Abate, Danila Penon, Rocco De Prisco, Antonella Penon, Iris Maria Forte, Elisabetta Benedetti, Annamaria Cimini, Paola Indovina, Barbara Nicolaus, Francesca Pentimalli, Antonio Giordano
Gastric cancer represents a diffuse and aggressive neoplasm, whose mortality index is among the highest in the world. Predisposing factors are E-cadherin mutations, Helicobacter pylori infection and a diet rich in salted and smoked food, with a low intake of fresh fruits and vegetables. Here we analyzed the effect of total lipophilic extracts of two Southern Italy tomato varieties, San Marzano and Corbarino, on an in vitro model of gastric cancer, YCC-1, YCC-2 and YCC-3 cell lines, characterized by different aggressiveness...
May 10, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28484399/biochemical-benefits-diagnosis-and-clinical-risks-evaluation-of-kratom
#14
REVIEW
Dimy Fluyau, Neelambika Revadigar
BACKGROUND: Kratom (Mitragyna speciosa) is a tropical tree with a long history of traditional use in parts of Africa and Southeast Asia. Kratom is also known as Thom, Thang, and Biak. Its leaves and the teas brewed from them have long been used by people in that region to manage pain and opioid withdrawal and to stave off fatigue. Kratom is actually consumed throughout the world for its stimulant effects and as an opioid substitute (in form of tea, chewed, smoked, or ingested in capsules)...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28482051/biomarkers-of-chronic-acrolein-inhalation-exposure-in-mice-implications-for-tobacco-product-induced-toxicity
#15
Daniel J Conklin, Marina V Malovichko, Iris Zeller, Trinath P Das, Tatiana V Krivokhizhina, Blake H Lynch, Pawel Lorkiewicz, Abhinav Agarwal, Nalinie Wickramasinghe, Petra Haberzettl, Srinivas D Sithu, Jasmit Shah, Timothy E O'Toole, Shesh N Rai, Aruni Bhatnagar, Sanjay Srivastava
Exposure to tobacco smoke, which contains several harmful and potentially harmful constituents such as acrolein increases cardiovascular disease (CVD) risk. Although high acrolein levels induce pervasive cardiovascular injury, the effects of low-level exposure remain unknown and sensitive biomarkers of acrolein toxicity have not been identified. Identification of such biomarkers is essential to assess the toxicity of acrolein present at low levels in the ambient air or in new tobacco products such as e-cigarettes...
May 8, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28476168/dioxins-and-related-environmental-contaminants-increase-tdp-43-levels
#16
Peter E A Ash, Elizabeth A Stanford, Ali Al Abdulatif, Alejandra Ramirez-Cardenas, Heather I Ballance, Samantha Boudeau, Amanda Jeh, James M Murithi, Yorghos Tripodis, George J Murphy, David H Sherr, Benjamin Wolozin
BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a debilitating neurodegenerative condition that is characterized by progressive loss of motor neurons and the accumulation of aggregated TAR DNA Binding Protein-43 (TDP-43, gene: TARDBP). Increasing evidence indicates that environmental factors contribute to the risk of ALS. Dioxins, related planar polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs) are environmental contaminants that activate the aryl hydrocarbon receptor (AHR), a ligand-activated, PAS family transcription factor...
May 5, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28470141/a-comparative-study-of-electronic-cigarette-vapor-extracts-on-airway-related-cell-lines-in-vitro
#17
Laura J Leslie, Pranav Vasanthi Bathrinarayanan, Pamela Jackson, Justin A Mabiala Ma Muanda, Ross Pallett, Christopher J P Stillman, Lindsay J Marshall
The use of electronic cigarettes (ECs) is rapidly increasing worldwide; however, scientific evidence regarding EC cytotoxicity is limited. The aim of this study was to evaluate the acute cytotoxicity of EC vapor extract (ECE) on airway-related cells in vitro. Cigarette smoke extract (CSE), vapor extract of fifteen brands/flavors of ECs and the extract from the E-vehicle (propylene glycol and glycerin) was collected. Extracts, in concentrations of 100-12.5%, were added to human bronchial epithelial (BEAS-2B, IB3-1 and C38), fibroblast (Wi-38) and macrophage (J774 and THP-1) cell lines...
February 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28470140/temporal-structure-function-variation-in-cultured-differentiated-human-nasal-epithelium-associated-with-acute-single-exposure-to-tobacco-smoke-or-e-cigarette-vapor
#18
Johnny L Carson, Laura Zhou, Luisa Brighton, Katherine H Mills, Haibo Zhou, Ilona Jaspers, Milan Hazucha
OBJECTIVE: Mucociliary clearance sustains a baseline functionality and an "on demand" capability to upregulate clearance upon irritant exposure involving mucus hypersecretion and accelerated ciliary beat frequency (CBF) modulated by nitric oxide (NO). This study characterized these elements as well as cellular and exogenous NO concentrations subsequent to a single exposure to tobacco smoke (TS) or e-cigarette vapor (EV) on cultured human airway epithelium. MATERIALS AND METHODS: Air-liquid interface (ALI) airway epithelial cultures per nonsmoking human subjects were subjected to single TS or EV exposures...
February 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28468684/a-chronology-of-ratios-between-black-smoke-and-pm10-and-pm2-5-in-the-context-of-comparison-of-air-pollution-epidemiology-concentration-response-functions
#19
Mathew R Heal, Iain J Beverland
BACKGROUND: For many air pollution epidemiological studies in Europe, 'black smoke' (BS) was the only measurement available to quantify ambient particulate matter (PM), particularly for exposures prior to the mid-1990s when quantification via the PM10 and/or PM2.5 metrics was introduced. The aim of this work was to review historic BS and PM measurements to allow comparison of health concentration-response functions (CRF) derived using BS as the measure of exposure with CRFs derived using PM10 or PM2...
May 3, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28461256/smoking-history-predicts-sensitivity-to-parp-inhibitor-veliparib-in-patients-with-advanced-non-small-cell-lung-cancer
#20
Martin Reck, Normand Blais, Erzsebet Juhasz, Vera Gorbunova, C Michael Jones, Laszlo Urban, Sergey Orlov, Fabrice Barlesi, Ebenezer Kio, Ulrich Keilholz, Qin Qin, Jiang Qian, Caroline Nickner, Juliann Dziubinski, Hao Xiong, Rajendar K Mittapalli, Martin Dunbar, Peter Ansell, Lei He, Mark McKee, Vincent Giranda, Suresh S Ramalingam
INTRODUCTION: Tobacco-related non-small cell lung cancer (NSCLC) is associated with reduced survival and greater genomic instability. Veliparib, a potent PARP inhibitor, augments platinum-induced DNA damage. A phase 2 trial of untreated advanced NSCLC showed a trend for improved outcomes (overall survival [OS], HR 0.80, 95% CI: 0.54-1.18; p=0.27; and progression-free survival [PFS], HR 0.72, 95% CI: 0.45-1.15; p=0.17) when veliparib was added to carboplatin/paclitaxel. Here we report an exploratory analysis by smoking history...
April 28, 2017: Journal of Thoracic Oncology
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