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Smoking and oxidative stress

Thomas Gaisl, Lukas Bregy, Nina Stebler, Martin Thomas Gaugg, Tobias Bruderer, Diego García-Gómez, Alexander Moeller, Florian Singer, Esther Irene Schwarz, Christian Benden, Pablo M-L Sinues, Renato Zenobi, Malcolm Kohler
We aimed at defining profiles of volatile organic compounds in exhaled breath from patients with cystic fibrosis (CF) using a novel real-time mass spectrometry technique.
 In this prospective matched case-control study, 30 patients with CF, and 30 healthy control subjects were matched one-to-one according to age, gender, and smoking state. We performed exhaled breath analysis by untargeted secondary electrospray ionization-high resolution mass spectrometry (SESI-HRMS). 
 Patients with CF (mean age 26...
March 20, 2018: Journal of Breath Research
Omar Khabour, Karem H Alzoubi, Nour Al-Sawalha, Mohammad Bani Ahmad, Alan Shihadeh, Thomas Eissenberg
PURPOSE: Acute exposure of experimental animals to waterpipe tobacco smoke has been shown to induce lung inflammation and injury. The aim of this study was to investigate the effect of chronic exposure to waterpipe smoke on inflammatory markers and oxidative stress in the mouse lung. METHOD: Using a whole-body exposure system, animals were exposed to waterpipe smoke for 6 weeks with a one-hour daily exposure for 5 days a week. RESULTS: Exposure to waterpipe tobacco smoke induced the recruitment of inflammatory cells to the airway...
March 16, 2018: Life Sciences
Robert John Aitken
This article is a personal perspective on male infertility, a condition that is not only extremely prevalent but also a major reason for couples to resort to assisted reproductive technology. The introduction of intra-cytoplasmic sperm injection (ICSI) as a form of facilitated fertilization had a revolutionary impact on our capacity to treat cases of male infertility associated with severely-compromised semen quality. However, the widespread use of this technique is also thought to pose risks in terms of the incidence of miscarriage, the health and wellbeing of the offspring and perpetuation of the infertile phenotype into future generations...
March 13, 2018: Molecular Human Reproduction
M Firoze Khan, Gangduo Wang
Oxidative stress (OS) plays an important role in the pathogenesis of a variety of autoimmune diseases (ADs) and many environmental agents participate in this process. Environmental agents, including trichloroethylene (TCE), silica, pristane, mercury, and smoke, are known to induce an autoimmune response, potentially through OS-mediated mechanisms. Here, we focus on unraveling the targets and signaling pathways that have been mechanistically linked with OS, as a result of exposure to these and numerous other environmental agents, and their impact on the immune system in triggering ADs...
February 2018: Current Opinion in Toxicology
Masaru Nakagawa, Sigeyuki Uno, Noriyoshi Iriyama, Manabu Matsunawa, Makoto Makishima, Jin Takeuchi, Isao Tsuboi, Yoshihiro Hatta, Masami Takei
Benzo[a]pyrene (BaP) is an environmental pollutant found in cigarette smoke and is implicated as a causative agent of tobacco-related diseases, such as arteriosclerosis. In contrast, vitamin D signaling, which is principally mediated by conversion of vitamin D to the active form, 1α,25-dihydroxyvitamin D3 [1,25(OH)2 D3 ], decreases cardiovascular disease risk. However, combined treatment with BaP and 1,25(OH)2 D3 enhances BaP toxicity, including BaP-DNA adduct formation. We further investigated the cross-talk between BaP and 1,25(OH)2 D3 signaling pathways, and found that combined treatment with these compounds induces mRNA and protein expression of plasminogen activator inhibitor 1 (PAI-1) in monocyte/macrophage-derived THP-1 and U937 cells...
March 7, 2018: Toxicology and Applied Pharmacology
Marco van der Toorn, Alain Sewer, Diego Marescotti, Stephanie Johne, Karin Baumer, David Bornand, Remi Dulize, Celine Merg, Maica Corciulo, Elena Scotti, Claudius Pak, Patrice Leroy, Emmanuel Guedj, Nikolai Ivanov, Florian Martin, Manuel Peitsch, Julia Hoeng, Karsta Luettich
Cigarette smoking is the leading cause of preventable lung cancer (LC). Reduction of harmful constituents by heating rather than combusting tobacco may have the potential to reduce the risk of LC. We evaluated functional and molecular changes in human bronchial epithelial BEAS-2B cells following a 12-week exposure to total particulate matter (TPM) from the aerosol of a candidate modified-risk tobacco product (cMRTP) in comparison with those following exposure to TPM from the 3R4F reference cigarette. Endpoints linked to lung carcinogenesis were assessed...
March 7, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
Ang Li, Yan Liu, Xiaosong Zhu, Xiao Sun, Xiuli Feng, Dawei Li, Jiangqiang Zhang, Meihua Zhu, Zhongxi Zhao
Although the organosulfur compounds from garlic have shown diverse pharmacological activities, the prototype drug was almost undetectable in vivo. As known, methylallyl sulfone (AMSO2) is the main metabolite of some active organosulfur compounds derived from garlic. The purpose of this article was to study the protective effect of AMSO2 on cigarette smoke extract (CSE) induced cell apoptosis in lungs in vivo and in vitro. The male rats were injected intraperitoneally with 900 μL of 100% CSE 3 times for three successive weeks...
March 7, 2018: Biochemical and Biophysical Research Communications
Shumin Ding, Xuefeng Hou, Gang Wang, Huihui Qiu, Ying Liu, Yuanli Zhou, Mei Du, Xiaobin Tan, Jie Song, Yingjie Wei, Luan Shu, Zhiyong Li, Liang Feng, Xiaobin Jia
Excessive autophagy plays a crucial role in cigarette smoking extract (CSE)-induced inflammation response and oxidative damage of respiratory epithelial cells. The components from Eclipta prostrata L. (CCE) have been shown to be beneficial for CSE-induced epithelial cells injury. However, whether its protection on CSE-stress injury is related to its regulation on autophagy remains still unclear. In this study, CCE, containing mainly wedelolactone of 45.88% and demethylwedelolactone of 23.74%, could improve significantly 10%CSE-induced cell viability of normal human bronchial epithelial (NHBE) cells using CCK-8 kit...
2018: Frontiers in Pharmacology
Mingxing Yang, Maxie Kohler, Tina Heyder, Helena Forsslund, Hilde K Garberg, Reza Karimi, Johan Grunewald, Frode S Berven, Sven Nyrén, C Magnus Sköld, Åsa M Wheelock
BACKGROUND: Smoking is the main risk factor for chronic obstructive pulmonary disease (COPD). Women with COPD who smoke experienced a higher risk of hospitalization and worse decline of lung function. Yet the mechanisms of these gender-related differences in clinical presentations in COPD remain unknown. The aim of our study is to identify proteins and molecular pathways associated with COPD pathogenesis, with emphasis on elucidating molecular gender difference. METHOD: We employed shotgun isobaric tags for relative and absolute quantitation (iTRAQ) proteome analyses of bronchoalveolar lavage (BAL) cells from smokers with normal lung function (n = 25) and early stage COPD patients (n = 18)...
March 8, 2018: Respiratory Research
Felipe Vilaça Cavallari Machado, Fabio Pitta, Nidia Aparecida Hernandes, Gisele Lopes Bertolini
PURPOSE: Chronic obstructive pulmonary disease (COPD) is characterized by persistent and progressive airflow obstruction that is associated with an abnormal chronic inflammatory response in the airways and lungs to noxious particles. COPD often leads to physical inactivity and deconditioning that added to inappropriate/excessive inflammatory responses leads to systemic consequences. Studies have shown that metabolic syndrome and manifested diabetes are more frequent in COPD than in healthy subjects; a possible explanation is that different pathophysiological aspects of COPD can lead to insulin resistance...
March 6, 2018: Endocrine
Satoru Yanagisawa, Jonathan R Baker, Chaitanya Vuppusetty, Takeshi Koga, Thomas Colley, Peter Fenwick, Louise E Donnelly, Peter J Barnes, Kazuhiro Ito
SIRT1 (silent information regulator 2 homolog 1) is a crucial cellular survival protein especially in oxidative stress environments, and has been thought to locate within the nuclei, but also known to shuttle between cytoplasm and nuclei in some cell types. Here, we show for the first time the dynamics of SIRT1 in the presence of single or concurrent cigarette smoke extract (CSE) exposure in human bronchial epithelial cells (HBEC). In BEAS-2B HBEC or primary HBEC, SIRT1 was localized predominantly in cytoplasm, and the CSE (3%) induced nuclear translocation of SIRT1 from cytoplasm in the presence of L-buthionine sulfoximine (an irreversible inhibitor of γ-glutamylcystein synthetase), mainly through the activation of phosphatidylinositol 3-kinase (PI3K) α subunit...
2018: PloS One
Sarah Oerther, Rebecca Lorenz
Telomere biology shows promise as an integrative biomarker of exposures and increased occurrence of chronic disease and early mortality. This integrative review examined the state of the science regarding toxicokinetic risks and maternal factors in humans and in vivo models that are correlated with telomere length during the first 1,000 days of life. The Preferred Reporting Items of Systematic Reviews and Meta-Analyses framework assisted in guiding this integrative by aiding researchers in identifying, selecting, and critically appraising the literature...
March 1, 2018: Western Journal of Nursing Research
Yi-Chih Lin, Yu-Hsing Chang, Shao-Yu Yang, Kwan-Dun Wu, Tzong-Shinn Chu
Diabetic kidney disease (DKD) is a major cause of morbidity and mortality in patients with diabetes mellitus and the leading cause of end-stage renal disease in the world. The most characteristic marker of DKD is albuminuria, which is associated with renal disease progression and cardiovascular events. Renal hemodynamics changes, oxidative stress, inflammation, hypoxia and overactive renin-angiotensin-aldosterone system (RAAS) are involved in the pathogenesis of DKD, and renal fibrosis plays the key role. Intensified multifactorial interventions, including RAAS blockades, blood pressure and glucose control, and quitting smoking, help to prevent DKD development and progression...
February 24, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
Jossimara Polettini, Lauren S Richardson, Ramkumar Menon
OBJECTIVE: A physiologic increase of reactive oxygen species (ROS) is observed through pregnancy. ROS-induced damage to major cellular elements, specifically protein peroxidation, can lead to fetal and placental tissue senescence and inflammation often associated with normal parturition. The purpose of this study was to examine the effects of oxidative stress (OS) in inducing changes in proteins, senescence, and sterile inflammation in pregnant mice. METHODS: CD-1 mice (n = 5/group) on day 14 of gestation were subjected to minilaparotomy and the uterine horn between gestational sacs was injected with the following: saline (control), cigarette smoke extract (CSE) CSE diluted in saline and CSE + SB 203580 (SB) (a p38 mitogen-activated protein kinase (MAPK) inhibitor)...
March 2018: Placenta
Julie Weidner, Linnea Jarenbäck, Ida Åberg, Gunilla Westergren-Thorsson, Jaro Ankerst, Leif Bjermer, Ellen Tufvesson
Chronic Obstructive Pulmonary Disease (COPD) is often caused by smoking and other stressors. This causes oxidative stress, which induces numerous changes on both the transcriptome and proteome of the cell. We aimed to examine if the endomembrane pathway, including the endoplasmic reticulum (ER), Golgi, and lysosomes, was disrupted in fibroblasts from COPD patients as opposed to healthy ever-smokers or never-smokers, and if the response to stress differed. Different cellular compartments involved in the endomembrane pathway, as well as mRNA expression and apoptosis, were examined before and after the addition of stress in lung fibroblasts from never-smokers, ever-smokers, and patients with COPD...
March 2018: Physiological Reports
Li Hui Tan, Karim Bahmed, Chih-Ru Lin, Nathaniel Marchetti, Sudhir Bolla, Gerard J Criner, Steven Kelsen, Muniswamy Madesh, Beata Kosmider
Emphysema is characterized by irreversibly enlarged airspaces and destruction of alveolar walls. One of the factors contributing to this disease pathogenesis is an elevation in extracellular matrix (ECM) degradation in the lung. Alveolar type II (ATII) cells produce and secrete pulmonary surfactants and proliferate to restore the epithelium after damage. We isolated ATII cells from control non-smokers, smokers and patients with emphysema to determine the role of NFE2 (nuclear factor, erythroid-derived 2). NFE2 is a heterodimer composed of two subunits, a 45 kDa (p45 NFE2) and 18 kDa (p18 NFE2) polypeptides...
February 23, 2018: Scientific Reports
Francesca Polverino, Bartolome R Celli, Caroline A Owen
Chronic obstructive pulmonary disease (COPD) is characterized by chronic expiratory airflow obstruction that is not fully reversible. COPD patients develop varying degrees of emphysema, small and large airway disease, and various co-morbidities. It has not been clear whether these co-morbidities share common underlying pathogenic processes with the pulmonary lesions. Early research into the pathogenesis of COPD focused on the contributions of injury to the extracellular matrix and pulmonary epithelial cells...
January 2018: Pulmonary Circulation
Genfa Wang, Nabijan Mohammadtursun, Jing Sun, Yubao Lv, Hualiang Jin, Jinpei Lin, Lingwen Kong, Zhengxiao Zhao, Hongying Zhang, Jingcheng Dong
Chronic obstructive pulmonary disease (COPD) is a common cause of mortality worldwide. The current lack of an animal model that can be established within a certain time frame and imitate the unique features of the disease is a major limiting factor in its study. The present study established and evaluated an animal model of COPD that represents the early and advanced stage features using short-, middle-, and long-term sidestream cigarette smoke (CS) exposure. One hundred and nine Sprague-Dawley rats were randomly divided into 10 groups for different periods of sidestream CS exposure or no exposure (i...
2018: Frontiers in Physiology
Carrie J Nobles, Enrique F Schisterman, Sandie Ha, Keewan Kim, Sunni L Mumford, Germaine M Buck Louis, Zhen Chen, Danping Liu, Seth Sherman, Pauline Mendola
BACKGROUND: Ambient air pollution is associated with systemic increases in oxidative stress, to which sperm are particularly sensitive. Although decrements in semen quality represent a key mechanism for impaired fecundability, prior research has not established a clear association between air pollution and semen quality. To address this, we evaluated the association between ambient air pollution and semen quality among men with moderate air pollution exposure. METHODS: Of 501 couples in the LIFE study, 467 male partners provided one or more semen samples...
February 16, 2018: Environmental Research
Maria Nikodemova, Jeremiah Yee, Patrick R Carney, Christopher A Bradfield, Kristen Mc Malecki
BACKGROUND: Obesity has been shown to alter response to air pollution and smoking but underlying biological mechanisms are largely unknown and few studies have explored mechanisms by which obesity increases human sensitivity to environmental exposures. OBJECTIVE: Overall study goals were to investigate whole blood gene expression in smokers and non-smokers to examine associations between cigarette smoke and changes in gene expression by obesity status and test for effect modification...
February 16, 2018: Environment International
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