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https://www.readbyqxmd.com/read/28637216/qualitative-analysis-and-detection-of-the-pyrolytic-products-of-jwh-018-and-11-additional-synthetic-cannabinoids-in-the-presence-of-common-herbal-smoking-substrates
#1
Stephen Raso, Suzanne Bell
Synthetic cannabinoids have become a ubiquitous challenge in forensic toxicology and seized drug analysis. Thermal degradation products have yet to be identified and evaluated for toxicity in comparison to parent and metabolic compounds. An investigation into these pyrolytic products, as the major route of ingestion is inhalation, may produce additional insight to understand the toxicity of synthetic cannabinoids. The pyrolysis of JWH-018 and 11 additional synthetic cannabinoids and six herbal plant substrates were conducted using an in-house constructed smoking simulator...
June 20, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28631397/the-effects-and-toxicity-of-cathinones-from-the-users-perspectives-a-qualitative-study
#2
Sulaf Assi, Nargilya Gulyamova, Paul Kneller, David Osselton
OBJECTIVE: The objective of this study is to explore the users' perspectives regarding the effects and toxicity of cathinones. METHODS: A systematic search of Internet discussion forums yielded 303 threads relevant to the research objectives. The threads were analysed by conventional content analysis where concepts were developed from codes and themes. RESULTS: The study identified 3 main themes in relation to cathinone use, effects, and toxicity...
June 20, 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28628818/in-vitro-assessment-of-the-toxicity-of-bushfire-emissions-a-review
#3
REVIEW
Trang T T Dong, Andrea L Hinwood, Anna C Callan, Graeme Zosky, William D Stock
Bushfires produce many toxic pollutants and the smoke has been shown to have negative effects on human health, especially to the respiratory system. Bushfires are predicted to increase in size and frequency, leading to a greater incidence of smoke and impacts. While there are many epidemiological studies of the potential impact on populations, there are few studies using in vitro methods to investigate the biological effects of bushfire emissions to better understand its toxicity and significance. This review focused on the literature pertaining to in vitro toxicity testing to determine the state of knowledge on current methods and findings on the impacts of bushfire smoke...
June 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28624672/analysis-of-fire-deaths-in-poland-and-influence-of-smoke-toxicity
#4
Joanna Giebułtowicz, Monika Rużycka, Piotr Wroczyński, David A Purser, Anna A Stec
Dwelling fires have changed over the years because building contents and the materials used in then have changed. They all contribute to an ever-growing diversity of chemical species found in fires, many of them highly toxic. These arise largely from the changing nature of materials in interior finishes and furniture, with an increasing content of synthetic materials containing higher levels of nitrogen, halogen and phosphorus additives. While there is still a belief that carbon monoxide is the major lethal toxic agent in fires, the hydrogen cyanide and acid gases released from these additives are now well-recognised as major contributory causes of incapacitation, morbidity and mortality in domestic fires...
June 9, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28620626/tobacco-smoke-constituents-trigger-cytoplasmic-calcium-release
#5
M Flori Sassano, Arunava Ghosh, Robert Tarran
Cytosolic Ca(2+) is a universal second messenger that is involved in many processes throughout the body, including the regulation of cell growth/cell division, apoptosis, and the secretion of both ions, and macromolecules. Tobacco smoke exerts multiple effects on airway epithelia and we have previously shown that Kentucky reference cigarette smoke exposure elevated the second messenger Ca(2+), leading to dysfunctional ion secretion. In this study, we tested whether little cigar and commercial cigarette smoke exposure exerts similar effects on intracellular Ca(2+) levels...
June 1, 2017: Applied in Vitro Toxicology
https://www.readbyqxmd.com/read/28620266/mechanistic-evaluation-of-the-impact-of-smoking-and-chronic-obstructive-pulmonary-disease-on-the-nasal-epithelium
#6
Marja Talikka, Florian Martin, Alain Sewer, Grégory Vuillaume, Patrice Leroy, Karsta Luettich, Nveed Chaudhary, Michael J Peck, Manuel C Peitsch, Julia Hoeng
Chronic obstructive pulmonary disease (COPD) is one of the major causes of chronic morbidity and mortality worldwide. The development of markers of COPD onset is hampered by the lack of accessibility to the primary target tissue, and there is a need to consider other sample sources as surrogates for biomarker research. Airborne toxicants pass through the nasal epithelium before reaching the lower airways, and the similarity with bronchial histology makes it an attractive surrogate for lower airways. In this work, we describe the transcriptomics findings from the nasal epithelia of subjects enrolled in a clinical study focusing on the identification of COPD biomarkers...
2017: Clinical Medicine Insights. Circulatory, Respiratory and Pulmonary Medicine
https://www.readbyqxmd.com/read/28608925/osteoradionecrosis-of-the-mandible-in-patients-with-oropharyngeal-carcinoma-treated-with-intensity-modulated-radiotherapy
#7
Francesca Caparrotti, Shao Hui Huang, Lin Lu, Scott V Bratman, Jolie Ringash, Andrew Bayley, John Cho, Meredith Giuliani, John Kim, John Waldron, Aaron Hansen, Li Tong, Wei Xu, Brian O'Sullivan, Robert Wood, David Goldstein, Andrew Hope
BACKGROUND: Osteoradionecrosis (ORN) of the mandible is a late toxicity affecting patients treated with radiotherapy for head and neck malignancies. To the authors' knowledge, ORN has no standardized grading system and its reporting is based on retrospective findings in heterogeneous patient populations. The rate of ORN in the era of intensity-modulated radiotherapy (IMRT) still is unknown. METHODS: The authors report the incidence of ORN from prospectively collected data regarding 1196 patients who were diagnosed with squamous cell carcinoma of the oropharynx and treated with curative-intent IMRT, with or without concomitant systemic treatment, from January 2005 to December 2014...
June 13, 2017: Cancer
https://www.readbyqxmd.com/read/28605482/substantial-toxic-effect-of-water-pipe-smoking-on-the-early-stage-of-embryonic-development
#8
Anas A Ashour, Mahmoud Y Haik, Khaled W Sadek, Huseyin C Yalcin, Joanna Bitharas, Tahar Aboulkassim, Gerald Batist, Amber Yasmeen, Ala-Eddin Al Moustafa
Background: Water-pipe smoking (WPS) is the most widespread tobacco use in the Middle-East, and is rapidly spreading globally. Smoke from WP contains most of the compounds present in cigarette smoke, although in different proportions. WPS is associated with the risk of several human diseases; however, its impact on the early stage of normal development has not been investigated yet. Thus, in this investigation, we assess the effect of WPS on the embryo at the early stage of development...
June 12, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28596295/genetic-variance-is-associated-with-susceptibility-for-cigarette-smoke-induced-damp-release-in-mice
#9
Simon D Pouwels, Alen Faiz, Lisette E den Boef, Reneé Gras, Maarten van den Berge, H Marike Boezen, Ron Korstanje, Nick H T Ten Hacken, Antoon J M van Oosterhout, Irene H Heijink, Martijn C Nawijn
Chronic obstructive pulmonary disease (COPD) is characterized by unresolved neutrophilic airway inflammation, and is caused by chronic exposure to toxic gases, such as cigarette smoke (CS), in genetically susceptible individuals. Recent data indicate a role for Damage Associated Molecular Patterns (DAMPs) in COPD. Here, we investigated the genetics of CS-induced DAMP release in 28 inbred mouse strains. Subsequently, in lung tissue from a subset of strains the expression of the identified candidate genes was analyzed...
June 8, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28595795/relationship-between-arsenic-and-selenium-in-workers-occupationally-exposed-to-inorganic-arsenic
#10
Beata Janasik, Anna Zawisza, Beata Malachowska, Wojciech Fendler, Magdalena Stanislawska, Renata Kuras, Wojciech Wasowicz
The interaction between arsenic (As) and selenium (Se) has been one of the most extensively studied. The antagonism between As and Se suggests that low Se status plays an important role in aggravating arsenic toxicity in diseases development. The objective of this study was to assess the Se contents in biological samples of inorganic As exposed workers (n=61) and in non-exposed subjects (n=52). Median (Me) total arsenic concentration in urine of exposed workers was 21.83μg/g creat. (interquartile range (IQR) 15...
July 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28592930/the-airway-in-inhalational-injury-diagnosis-and-management
#11
A Sabri, H Dabbous, A Dowli, R Barazi
It is estimated that 13.000 to 22.000 individuals suffer from inhalational burns each year in the United States alone. Despite these high numbers, inhalational burns remain a major challenge to otolaryngologists. In this paper, a review of literature is presented in order to provide otolaryngologists with a systematic approach to patients with inhalational burns to optimize treatment, cost, morbidity and, most importantly, mortality. For this purpose, a broad PubMed search was conducted. The available literature was found to highlight the importance of airway management in terms of the timing of intubation, method of intubation, trachea-esophageal (TE) fistula formation and TE rupture...
March 31, 2017: Annals of Burns and Fire Disasters
https://www.readbyqxmd.com/read/28592162/natural-and-synthetic-products-used-for-the-treatment-of-smoke-inhalation-a-patent-review
#12
Fernanda Oliveira de Carvalho, Érika Ramos Silva, Fernanda Araújo Felipe, Luciana Garcez Barretto Teixeira, Luciana Beatriz Silva Zago, Paula Santos Nunes, Saravanan Shanmugam, Mairim Russo Serafini, Adriano Antunes de Souza Araújo
Inhalation injury is the leading cause of death in burn patients and is usually caused by the uninhibited absorption of smoke, which has an extremely toxic effect on the respiratory system. The physiopathology of inhalation injury covers multiple factors and the injured respiratory system may present deterioration in a few hours. Areas covered: In this present review, we analyzed patents based on both natural and synthetic products developed for the treatment of smoke inhalation. We found 14 patents in Espacenet, 25 in WIPO and none in the USPTO data search...
June 8, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28591850/acrolein-exposure-in-hookah-smokers-and-non-smokers-exposed-to-hookah-tobacco-secondhand-smoke-implications-for-regulating-hookah-tobacco-products
#13
Nada O F Kassem, Noura O Kassem, Sandy Liles, Adam T Zarth, Sheila R Jackson, Reem M Daffa, Dale A Chatfield, Steven G Carmella, Stephen S Hecht, Melbourne F Hovell
Introduction: Acrolein is a highly ciliatoxic agent, a toxic respiratory irritant, a cardiotoxicant, and a possible carcinogen present in tobacco smoke including hookah tobacco. Methods: 105 hookah smokers and 103 non-smokers attended exclusively hookah smoking social events at either a hookah lounge or private home, and provided urine samples the morning of and the morning after the event. Samples were analyzed for 3-hydroxypropylmercapturic acid (3-HPMA), a metabolite of acrolein...
June 7, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28583391/rapid-determination-of-9-aromatic-amines-in-mainstream-cigarette-smoke-by-modified-dispersive-liquid-liquid-microextraction-and-ultraperformance-convergence-chromatography-tandem-mass-spectrometry
#14
Huimin Deng, Fei Yang, Zhonghao Li, Zhaoyang Bian, Ziyan Fan, Ying Wang, Shanshan Liu, Gangling Tang
Aromatic amines in mainstream cigarette smoke have long been monitored due to their carcinogenic toxicity. In this work, a reliable and rapid method was developed for the simultaneous determination of 9 aromatic amines in mainstream cigarette smoke by modified dispersive liquid liquid microextraction (DLLME) and ultraperformance convergence chromatography tandem mass spectrometry (UPC(2)-MS/MS). Briefly, the particulate phase of the cigarette smoke was captured by a Cambridge filter pad, and diluted hydrogen chloride aqueous solution is employed to extract the aromatic amines under mechanical shaking...
May 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28579844/health-effects-of-waterpipe-tobacco-use-getting-the-public-health-message-just-right
#15
Mohammed Ali, Mohammed Jawad
Many public health messages benchmark the harms of waterpipe tobacco against those of cigarettes, usually using numerical magnitudes of risk. This approach, although well intentioned, could be perceived as alarmist, damaging scientific credibility, and giving an unintended impression that one tobacco product is less harmful than the other. This commentary makes clear the harm waterpipe tobacco smoking poses to public health by describing its mechanism of use, consumption uptake, toxicologic profile, and documented health outcomes, as well as challenge existing thinking that toxicologic assessments are the most appropriate way to frame waterpipe tobacco health promotion messages...
2017: Tobacco Use Insights
https://www.readbyqxmd.com/read/28578920/clinical-factors-and-dosimetry-associated-with-the-development-of-prostate-brachytherapy-related-urethral-strictures-a-matched-case-control-study
#16
Sandeep Singhal, Muhammad F Jamaluddin, Emma Lee, Ronald S Sloboda, Matthew Parliament, Nawaid Usmani
PURPOSE: Urethral strictures are a rare complication of prostate brachytherapy (BXT), with prior studies showing radiation dose to the bulbomembranous urethra as being associated with stricture formation. This retrospective case-control study explored clinical and dosimetric parameters associated with the development of BXT-related urethral strictures. METHODS AND MATERIALS: A cohort of 34 patients developed urethral strictures after BXT at our institution for the period of 2008-2014...
May 31, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28576286/a-novel-hybrid-tobacco-product-that-delivers-a-tobacco-flavour-note-with-vapour-aerosol-part-1-product-operation-and-preliminary-aerosol-chemistry-assessment
#17
Simon Poynton, Joseph Sutton, Sharon Goodall, Jennifer Margham, Mark Forster, Ken Scott, Chuan Liu, Kevin McAdam, James Murphy, Christopher Proctor
Vapour products have demonstrated potential to be a lower-risk alternative to cigarettes. The present study describes a novel hybrid tobacco product that combines a warm aerosol stream generated by an electronic vaporisation mechanism with tobacco top flavour from cut tobacco. During operation, the aerosol stream released from the vapour cartomiser is passed through a bed of blended cut tobacco by the puffing flow, elevating the tobacco temperature and eluting volatile tobacco flavour components. A preliminary but comprehensive analysis of the aerosol composition of the hybrid tobacco product found that emissions were dominated by the control vapour formulation...
May 30, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28573078/petroleum-carcinogenicity-and-aerodigestive-tract-in-context-of-developing-nations
#18
REVIEW
Sunali Khanna, Amit S Gharpure
Head and neck cancers from a diverse group of neoplasms, the occurrence of which can be attributed to habitual tobacco use, race, alcohol consumption, ultraviolet (UV) exposure, occupational exposure, viruses, and diet. The surging incidence rates reflect the prevalence of risk factors such as tobacco use (smoked and smokeless), betel nut chewing, urbanization and issues relating to urban air quality. Urbanization and development have catalyzed a multifold rise in levels of pollution in metropolitan cities...
April 30, 2017: Curēus
https://www.readbyqxmd.com/read/28572013/comparison-of-in-vitro-toxicological-effects-of-biomass-smoke-from-different-sources-of-animal-dung
#19
Claire E McCarthy, Parker F Duffney, Jeffrey D Wyatt, Thomas H Thatcher, Richard P Phipps, Patricia J Sime
Worldwide, over 4 million premature deaths each year are attributed to the burning of biomass fuels for cooking and heating. Epidemiological studies associate household air pollution with lung diseases, including chronic obstructive pulmonary disease, lung cancer, and respiratory infections. Animal dung, a biomass fuel used by economically vulnerable populations, generates more toxic compounds per mass burned than other biomass fuels. The type of animal dung used varies widely depending on local agro-geography...
May 30, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28567673/diesel-reformulation-using-bio-derived-propanol-to-control-toxic-emissions-from-a-light-duty-agricultural-diesel-engine
#20
Muthukkumar Thillainayagam, Krishnamoorthy Venkatesan, Rana Dipak, Saravanan Subramani, Balaji Sethuramasamyraja, Rajesh Kumar Babu
In the Indian agricultural sector, millions of diesel-driven pump-sets were used for irrigation purposes. These engines produce carcinogenic diesel particulates, toxic nitrogen oxides (NOx), and carbon monoxide (CO) emissions which threaten the livelihood of large population of farmers in India. The present study investigates the use of n-propanol, a less-explored high carbon bio-alcohol that can be produced by sustainable pathways from industrial and crop wastes that has an attractive opportunity for powering stationary diesel engines meant for irrigation and rural electrification...
May 31, 2017: Environmental Science and Pollution Research International
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