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Smoking and oxidative stress

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https://www.readbyqxmd.com/read/29343810/mitochondrial-dna-damage-and-subsequent-activation-of-z-dna-binding-protein-1-links-oxidative-stress-to-inflammation-in-epithelial-cells
#1
Bartosz Szczesny, Michela Marcatti, Akbar Ahmad, Mauro Montalbano, Attila Brunyánszki, Sofia-Iris Bibli, Andreas Papapetropoulos, Csaba Szabo
This report identifies mitochondrial DNA (mtDNA) as a target and active mediator that links low-level oxidative stress to inflammatory response in pulmonary epithelial cells. Extrusion of mtDNA into the bronchoalveolar lavage fluid occurs as an early event in mice subjected to cigarette smoke injury, concomitantly with the depletion of mtDNA in the lung tissue. In cultured lung epithelial cells, prolonged, low-level oxidative stress damages the mtDNA, without any detectable damage to the nuclear DNA. In turn, cellular depletion of the mtDNA occurs, together with a transient remodeling of cellular bioenergetics and morphology - all without any detectable impairment in overall cell viability...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29332119/autofluorescence-of-skin-advanced-glycation-end-products-as-a-risk-factor-for-open-angle-glaucoma-the-alienor-study
#2
Cedric Schweitzer, Audrey Cougnard-Gregoire, Vincent Rigalleau, Jean-Francois Dartigues, Florence Malet, Marie-Benedicte Rougier, Marie-Noelle Delyfer, Catherine Helmer, Jean-Francois Korobelnik, Cecile Delcourt
Purpose: To analyze the association between skin autofluorescence (sAF), estimating tissue accumulation of advanced glycation end-products (AGEs), and open angle glaucoma (OAG) in an elderly population. Methods: The Antioxydants, Lipides Essentiels, Nutrition and maladies OculaiRes (ALIENOR) study is an on-going epidemiologic population-based study on age-related eye diseases. In 2009 to 2010, 624 subjects, aged 74 years or older, were recruited. All subjects underwent a complete eye examination, including optic disc color photography and spectral-domain optical coherence tomography (SD-OCT) examination...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29329251/pharmacological-investigation-of-the-anti-inflammation-and-anti-oxidation-activities-of-diallyl-disulfide-in-a-rat-emphysema-model-induced-by-cigarette-smoke-extract
#3
Yan Liu, Ang Li, Xiuli Feng, Xiao Sun, Xiaosong Zhu, Zhongxi Zhao
Diallyl disulfide (DADS) is the main organosulfur ingredient in garlic, with known antioxidant and anti-inflammatory activities. The aim of the present study was to investigate the effect of DADS on reducing the inflammation and redox imbalance in a rat emphysema model that was induced by intraperitoneal injection of cigarette smoke extract (CSE). Briefly, DADS exerted an anti-inflammation effect on emphysema rats through decreasing cell influx in the bronchoalveolar lavage fluid (BALF) and suppressing pro-inflammation cytokine production including tumor necrosis factor alpha (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6) via inhibiting the NF-κB pathway...
January 12, 2018: Nutrients
https://www.readbyqxmd.com/read/29321495/tanshinone-iia%C3%A2-sulfonate-protects-against-cigarette-smoke-induced-copd-and-down-regulation-of-cftr-in-mice
#4
Defu Li, Jian Wang, Dejun Sun, Xuefang Gong, Hua Jiang, Jiaze Shu, Ziyi Wang, Zhen Long, Yiguan Chen, Zili Zhang, Liang Yuan, Ruijuan Guan, Xue Liang, Ziying Li, Hongwei Yao, Nanshan Zhong, Wenju Lu
Chronic obstructive pulmonary disease (COPD) is a chronic lung disease characterized by abnormal inflammation, persistent and progressive lung function decline. The anti-inflammatory actions of tanshinone IIA, which is the most important active component from Chinese herbal medicine Danshen, have been well studied. However, it remains unknown whether sodium tanshinone IIA sulfonate (STS) protects against the development of COPD. Here we found that STS inhalation (5 mg/kg, 30 min per session, twice a day) significantly attenuated lung function decline, airspace enlargement, mucus production, bronchial collagen deposition, inflammatory responses and oxidative stress caused by cigarette smoke (CS) and lipopolysaccharide (LPS) exposures in mice...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29316855/the-role-of-noninvasive-cardiovascular-testing-applied-clinical-nutrition-and-nutritional-supplements-in-the-prevention-and-treatment-of-coronary-heart-disease
#5
Mark Houston
Numerous clinical trials suggest that we have reached a limit in our ability to decrease the incidence of coronary heart disease (CHD) and cardiovascular disease (CVD) utilizing the traditional diagnostic evaluation, prevention and treatment strategies for the top five cardiovascular risk factors of hypertension, diabetes mellitus, dyslipidemia, obesity and smoking. About 80% of heart disease (heart attacks, angina, coronary heart disease and congestive heart failure) can be prevented by optimal nutrition, optimal exercise, optimal weight and body composition, mild alcohol intake and avoiding smoking...
January 1, 2018: Therapeutic Advances in Cardiovascular Disease
https://www.readbyqxmd.com/read/29307774/liaison-between-heme-metabolism-and-bioenergetics-pathways-a-multimodal-elucidation-for-early-diagnosis-of-oral-cancer
#6
Ripon Sarkar, Kabita Chaterjee, Durbadal Ojha, Bijurica Chakraborty, Sanghamitra Sengupta, Debprasad Chattopadhyay, Chirasree RoyChaudhuri, Ananya Barui
Metabolic alterations of oral epithelial cells under oxidative stress are important signatures for early diagnosis of oral cancer. Amongst different metabolic alterations, non-invasive photo-diagnostic methods have been extensively used for determining cellular heme metabolism and accumulation of protoporphyrin IX (PpIX) under administration of suitable photosensitizer. In this study, we report these metabolic alterations by direct analysis of oral exfoliated cells obtained from individuals with prolonged smoking habit without the exogenous administration of any photosensitizer...
January 4, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29304131/soluble-guanylate-cyclase-stimulation-reduces-oxidative-stress-in-experimental-chronic-obstructive-pulmonary-disease
#7
Tanja Paul, Anna Salazar-Degracia, Victor I Peinado, Olga Tura-Ceide, Isabel Blanco, Esther Barreiro, Joan A Barberà
OBJECTIVE: Soluble guanylate cyclase (sGC) is a key enzyme of the nitric oxide-cyclic guanosine 3',5'-monophosphate (NO-cGMP) signaling pathway, and its pharmacological stimulation has been shown to prevent the development of emphysema and pulmonary vascular remodeling in animal models of chronic obstructive pulmonary disease (COPD). The aim of this study was to evaluate the effects of sGC stimulation on oxidative stress in the plasma of guinea pigs chronically exposed to cigarette smoke (CS)...
2018: PloS One
https://www.readbyqxmd.com/read/29299995/mirna-and-proteomic-dysregulation-in-non-small-cell-lung-cancer-in-response-to-cigarette-smoke
#8
Niraj Babu, Jayshree Advani, Hitendra S Solanki, Krishna Patel, Ankit P Jain, Aafaque Ahmad Khan, Aneesha Radhakrishnan, Nandini A Sahasrabuddhe, Premendu Prakash Mathur, Bipin Nair, T S Keshava Prasad, Xiaofei Chang, David Sidransky, Harsha Gowda, Aditi Chatterjee
BACKGROUND: Dysregulation of miRNAs is associated with the development of non-small cell lung cancer (NSCLC). It is imperative to study the dysregulation of miRNAs by cigarette smoke which will affect their targets, either leading to the overexpression of oncoproteins or downregulation of tumor suppressor proteins. OBJECTIVE AND METHODS: In this study, we carried out miRNA sequencing and SILAC-based proteomic analysis of H358 cells chronically exposed to cigarette smoke condensate...
January 3, 2018: MicroRNA
https://www.readbyqxmd.com/read/29285723/the-divalent-elements-changes-in-early-stages-of-chronic-kidney-disease
#9
Wan-Ju Kung, Ching-Tang Shih, Chien-Hung Lee, Ching-Chiang Lin
As the glomerular filtration rate (GFR) decreases, it can cause imbalance in some divalent elements. These imbalances can cause increased oxidative stress in patients with renal impairment. The aim of present study was to investigate the changes of these divalent elements with CKD progression. One hundred and ninety-four patients with chronic kidney diseases (CKD) were divided into five stages, stage 1, 2, 3a, 3b, 4, and were recruited into this study. The divalent elements, calcium, magnesium, phosphorus, as well as iron, zinc, and copper were determined in clinical chemistry analyzer...
December 28, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29284685/oxidative-stress-biomarkers-and-asthma-characteristics-in-adults-of-the-egea-study
#10
Miora Andrianjafimasy, Farid Zerimech, Zeina Akiki, Helene Huyvaert, Nicole Le Moual, Valérie Siroux, Régis Matran, Orianne Dumas, Rachel Nadif
Asthma is an oxidative stress related disease, but associations with asthma outcomes are poorly studied in adults. We aimed to study the associations between several biomarkers related to oxidative stress and various asthma outcomes.Cross-sectional analyses were conducted in 1388 adults (mean age 43 years, 44% with asthma) from the Epidemiological Study of the Genetics and Environment of Asthma (EGEA2). Three blood antioxidant enzyme activities (biomarkers of response to oxidative stress) and exhaled breath condensate 8-isoprostanes and plasma fluorescent oxidation products (FlOPs) levels (two biomarkers of damage) were measured...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29278923/environmental-stressors-and-their-impact-on-health-and-disease
#11
Thomas Münzel, Andreas Daiber
Epidemiological, preclinical and interventional clinical studies have demonstrated that environmental stressors are associated with health problems, namely cardiovascular diseases. According to estimations of the World Health Organization environmental risk factors account for an appreciable part of global deaths and life years spent with disability. This Forum issue addresses the impact of the environmental risk factors traffic noise exposure, air pollution by particulate matter, mental stress / loneliness as well as the life style risk factor (water-pipe) smoking on health and disease with focus on the cardiovascular system...
December 26, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29247592/relationship-between-smoking-and-and-total-antioxidant-status-total-oxidant-status-oxidative-stress-index-vit-c-vit-e
#12
M Merve Karademirci, Ruhusen Kutlu, Ibrahim Kilinc
BACKGROUND: Tobacco smoke contains many toxic, carcinogenic and mutagenic chemicals, as well as stable and unstable free radicals. In this study, we aimed to assess the vitamin E, vitamin C and total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI) in smoking and non-smoking men. METHODS: This case control analytical study was conducted on 78 smoking and 82 non-smoking men. Fagerström nicotine dependence test was used in order to assess the participants'addiction status...
December 16, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29247416/%C3%AE-carotene-and-retinol-reduce-benzo-a-pyrene-induced-mutagenicity-and-oxidative-stress-via-transcriptional-modulation-of-xenobiotic-metabolizing-enzymes-in-human-hepg2-cell-line
#13
Wageh Sobhy Darwish, Yoshinori Ikenaka, Shouta Nakayama, Hazuki Mizukawa, Lesa A Thompson, Mayumi Ishizuka
Benzo[a]pyrene (B[a]P) is one of the polycyclic aromatic hydrocarbons which is formed due to smoking of foods, incomplete combustion of woods, vehicle exhausts, and cigarettes smokes. B[a]P gets entry into human and animal bodies mainly through their diets. Metabolic activation of B[a]P is required to induce mutagenesis and carcinogenesis in animal and human studies. Carotenoids and retinoids are phytochemicals that if ingested have multiple physiological interferences in the human and animal bodies. In this study, we firstly investigated the protective effects of β-carotene, β-apo-8-carotenal, retinol, and retinoic acid against B[a]P-induced mutagenicity and oxidative stress in human HepG2 cells...
December 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29243793/a-new-antioxidant-formulation-reduces-the-apoptotic-and-damaging-effect-of-cigarette-smoke-extract-on-human-bronchial-epithelial-cells
#14
L Vanella, G Li Volti, A Distefano, M Raffaele, V Zingales, R Avola, D Tibullo, I Barbagallo
OBJECTIVE: In this study we evaluated the possible protective effect of an antioxidant formulation containing microfiltered milk derived polypeptides, Curcumin, Vitamin B2, Carnitine and N-Acetyl-cysteine (NAC) in an in vitro model of chronic obstructive pulmonary disease (COPD). MATERIALS AND METHODS: Human bronchial epithelial cells (16HBE) were used in this study. Cells were treated for 24 h in the presence or absence of 10% of cigarette smoke extract (CSE) and in the presence or absence of antioxidant formulation...
December 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29242907/skin-intrinsic-fluorescence-and-age-related-macular-degeneration-the-beaver-dam-eye-study
#15
Ronald Klein, Kristine E Lee, John D Maynard, Stacy M Meuer, Ronald E Gangnon, Barbara E K Klein
Purpose: To determine if skin intrinsic fluorescence (SIF), a noninvasive measure of advanced glycation endproducts and oxidative stress in skin is associated with AMD. Methods: SIF was measured with the SCOUT DS skin fluorescence spectrometer in a cross-sectional cohort study of 969 persons aged 68 to 102 years from the 1181 who participated in the 25-year follow-up examination in the Beaver Dam Eye Study (BDES) in 2014 to 2016. The SCOUT DS skin fluorescence spectrometer uses five light-emitting diodes, centered at 375 nm to 456 nm...
December 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29242843/systemic-oxidoreductive-balance-and-vascular-function-in-individuals-without-clinical-manifestation-of-atherosclerosis
#16
Marcin Majer, Daniel Gackowski, Rafał Różalski, Agnieszka Siomek-Górecka, Ryszard Oliński, Jacek Budzyński
Introduction: Endothelial dysfunction is recognized as the earliest disorder in the development of atherosclerosis, in the pathogenesis of which oxidative stress plays a crucial role. The aim of this study was to determine the relationships between non-invasive parameters of vascular dysfunction and oxidative stress. Material and methods: Forty-eight individuals without clinical manifestation of atherosclerosis were studied. The plasma concentrations of the following were determined in all 48 subjects: retinol, ascorbic acid, α-tocopherol and uric acid, as well as the products of oxidative DNA damage repair: 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) in blood leukocytes and urine, and 8-oxo-7,8-dihydroguanine (8-oxoGua) in urine...
2017: Archives of medical sciences. Atherosclerotic diseases
https://www.readbyqxmd.com/read/29236702/oral-nicotine-aggravates-endothelial-dysfunction-and-vascular-inflammation-in-diet-induced-obese-rats-role-of-macrophage-tnf%C3%AE
#17
Chang Liu, Ming-Sheng Zhou, Yao Li, Aimei Wang, Kiranmai Chadipiralla, Runxia Tian, Leopoldo Raij
Obesity and cigarette smoke are major cardiovascular (CV) risk factors and, when coexisting in the same individuals, have additive/synergistic effects upon CVD. We studied the mechanisms involved in nicotine enhancement of CVD in Sprague Dawley rats with diet-induced obesity. The rats were fed either a high fat (HFD) or normal rat chow diet with or without nicotine (100 mg/L in drinking water) for 20 weeks. HFD rats developed central obesity, increased systolic blood pressure (SBP), aortic superoxide (O2-) production, and impaired endothelial nitric oxide synthase (eNOS) and endothelium-dependent relaxation to acetylcholine (EDR)...
2017: PloS One
https://www.readbyqxmd.com/read/29229550/cardiovascular-disease-risk-factors-and-oxidative-stress-among-premenopausal-women
#18
Chelsea Anderson, Ginger L Milne, Yong-Moon Mark Park, Dale P Sandler, Hazel B Nichols
Oxidative stress is one hypothesized mechanism linking anthropometric, behavioral, and medical risk factors with cardiovascular disease (CVD). We evaluated cross-sectional associations between CVD risk factors and biomarkers of oxidative stress, and investigated these biomarkers as predictors of incident diabetes and hypertension among premenopausal women. F2-isoprostane (F2-IsoP) and metabolite (15-F2t-IsoP-M), reliable biomarkers of oxidative stress, were measured in urine samples collected at enrollment from 897 premenopausal women (ages 35-54) enrolled in the Sister Study cohort without a CVD history...
December 8, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29228169/endothelial-permeability-ldl-deposition-and-cardiovascular-risk-factors-a-review
#19
Santa Mundi, Marika Massaro, Egeria Scoditti, Maria Annunziata Carluccio, Victor W M van Hinsbergh, M Luisa Iruela-Arispe, Raffaele De Caterina
Early atherosclerosis features functional and structural changes in the endothelial barrier function that affect the traffic of molecules and solutes between the vessel lumen and the vascular wall. Such changes are mechanistically related to the development of atherosclerosis.Proatherogenic stimuli and cardiovascular risk factors, such as dyslipidemias, diabetes, obesity, and smoking, all increase endothelial permeability sharing a common signalling denominator: an imbalance in the production/disposal of reactive oxygen species (ROS), broadly termed oxidative stress...
December 8, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29227717/quercetin-restores-corticosteroid-sensitivity-in-cells-from-patients-with-chronic-obstructive-pulmonary-disease
#20
Akihisa Mitani, Aishah Azam, Chaitanya Vuppusetty, Kazuhiro Ito, Nicolas Mercado, Peter J Barnes
Corticosteroid resistance is a major barrier to the effective treatment of chronic obstructive pulmonary disease (COPD). Oxidative stress from cigarette smoke and chronic inflammation is likely to induce this corticosteroid insensitivity. Quercetin is a polyphenol that has been reported to be an active oxygen scavenger as well as a functional adenosine monophosphate-activated protein kinase (AMPK) activator. The aim of this study was to investigate the effect of quercetin on corticosteroid responsiveness in COPD cells...
December 11, 2017: Experimental Lung Research
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