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https://www.readbyqxmd.com/read/28102970/microbiomes-in-respiratory-health-and-disease-an-asia-pacific-perspective
#1
REVIEW
Sanjay H Chotirmall, Shaan L Gellatly, Kurtis F Budden, Micheál Mac Aogain, Shakti D Shukla, David L A Wood, Philip Hugenholtz, Kevin Pethe, Philip M Hansbro
There is currently enormous interest in studying the role of the microbiome in health and disease. Microbiome's role is increasingly being applied to respiratory diseases, in particular COPD, asthma, cystic fibrosis and bronchiectasis. The changes in respiratory microbiomes that occur in these diseases and how they are modified by environmental challenges such as cigarette smoke, air pollution and infection are being elucidated. There is also emerging evidence that gut microbiomes play a role in lung diseases through the modulation of systemic immune responses and can be modified by diet and antibiotic treatment...
February 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28102118/myeloid-cells-in-asthma
#2
Bart N Lambrecht, Emma K Persson, Hamida Hammad
Asthma is a heterogeneous chronic inflammatory disorder of the airways, and not surprisingly, many myeloid cells play a crucial role in pathogenesis. Antigen-presenting dendritic cells are the first to recognize the allergens, pollutants, and viruses that are implicated in asthma pathogenesis, and subsequently initiate the adaptive immune response by migrating to lymph nodes. Eosinophils are the hallmark of type 2 inflammation, releasing toxic compounds in the airways and contributing to airway remodeling. Mast cells and basophils control both the early- and late-phase allergic response and contribute to alterations in smooth muscle reactivity...
January 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28079560/prenatal-exposures-and-the-development-of-childhood-wheezing-illnesses
#3
Christian Rosas-Salazar, Tina V Hartert
PURPOSE OF REVIEW: To critically evaluate and summarize studies published between July 2015 and June 2016 linking prenatal exposures and the onset of childhood wheezing illnesses and to discuss future research directions in this field. RECENT FINDINGS: The aggregated evidence indicates a consistent detrimental effect of prenatal exposure to parental smoking, outdoor air pollution, and maternal stress on childhood wheezing illnesses. Less consistent evidence suggests an adverse impact of maternal obesity during pregnancy and prenatal exposure to antibiotics on these outcomes...
January 11, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28079559/strategies-to-alter-the-natural-history-of-childhood-asthma
#4
K A Lee-Sarwar, L B Bacharier, A A Litonjua
PURPOSE OF REVIEW: Asthma exhibits significant heterogeneity in occurrence and severity over the lifespan. Our goal is to discuss recent evidence regarding determinants of the natural history of asthma during childhood, and review the rationale behind and status of major efforts to alter its course. RECENT FINDINGS: Variations in microbial exposures are associated with risk of allergic disease, and the use of bacterial lysates may be a promising preventive strategy...
January 11, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28077472/erj-january-podcast-the-bioshare-approach-to-understanding-of-the-effects-of-air-pollution-on-asthma
#5
(no author information available yet)
No abstract text is available yet for this article.
January 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28076315/meteorological-parameters-and-pollutants-on-asthma-exacerbation-in-bangalore-india-an-ecological-retrospective-time-series-study
#6
Kirthana U Kunikullaya, Ambarish Vijayaraghava, P Asha, Radhika Kunnavil, B V MuraliMohan
BACKGROUND: Literature has shown a significant association between asthma exacerbations and pollutant levels during that time. There is very limited evidence in India, especially Bangalore, for impacts of meteorological changes and pollution on asthma hospital admissions in adults. The objective was to study the impact of air pollution and meteorological parameters on asthma exacerbation in Bangalore. METHODS: This study quantitatively analyzed the relation between acute exacerbations of asthma and related admissions to the hospital with the air pollution and the meteorological conditions during that time...
January 11, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28068894/strain-differences-in-a-murine-model-of-air-pollutant-induced-nonatopic-asthma-and-rhinitis
#7
Jack R Harkema, Lucas A Hotchkiss, Nicholas A Vetter, Daven N Jackson-Humbles, Ryan P Lewandowski, James G Wagner
Ozone is an irritating gas found in photochemical smog. Epidemiological associations have been made between the onset of asthma and childhood exposures to increasing levels of ambient ozone (i.e., air pollutant-induced nonatopic asthma). Individuals, however, vary in their susceptibility to this outdoor air pollutant, which may be due, in part, to their genetic makeup. The present study was designed to test the hypothesis that there are murine strain-dependent differences in pulmonary and nasal pathologic responses to repeated ozone exposures...
January 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28067786/impact-of-air-pollutants-on-outpatient-visits-for-acute-respiratory-outcomes
#8
Ran Li, Ning Jiang, Qichen Liu, Jing Huang, Xinbiao Guo, Fan Liu, Zhancheng Gao
The air pollution in China is a severe problem. The aim of our study was to investigate the impact of air pollutants on acute respiratory outcomes in outpatients. Outpatient data from 2 December 2013 to 1 December 2014 were collected, as well as air pollutant data including ozone (O₃), nitrogen dioxide (NO₂), carbon monoxide (CO), sulfur dioxide (SO₂), and particulate matter (PM2.5 and PM10). We screened six categories of acute respiratory outcomes and analyzed their associations with different air pollutant exposures, including upper respiratory tract infection (URTI), acute bronchitis (AB), community-acquired pneumonia (CAP), acute exacerbation of chronic obstructive pulmonary disease (AECOPD), acute exacerbation of asthma (AE-asthma), and acute exacerbation of bronchiectasis (AEBX)...
January 5, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28061882/indoor-and-outdoor-pm10-levels-at-schools-located-near-mine-dumps-in-gauteng-and-north-west-provinces-south-africa
#9
Vusumuzi Nkosi, Janine Wichmann, Kuku Voyi
BACKGROUND: Few studies in South Africa have investigated the exposure of asthmatic learners to indoor and outdoor air pollution at schools. This study compared outdoor PM10 and SO2 exposure levels in exposed (1-2 km from gold mine dumps) and unexposed schools (5 km or more from gold mine dumps). It also examined exposure of asthmatic children to indoor respirable dust at exposed and unexposed schools. METHODS: The study was conducted between 1 and 31 October 2012 in five schools from exposed and five from unexposed communities...
January 6, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28057119/-impacts-of-airborne-particulate-matter-and-its-components-on-respiratory-system-health
#10
L M Cao, Y Zhou, Z Zhang, W W Sun, G Mu, W H Chen
Nowadays, particulate air pollution has been a global environmental problem. Numerous studies has shown that long-term exposure to high level of airborne particulate matter (PM) can damage human health. Respiratory system, as a direct portal to contact with particulate matter, can be more susceptible to airborne particulates. Summarizing latest five-year epidemiological research, the present review is focused on the effects of PM on respiratory system health in different age groups. In detail, we investigated the harmful effect of PM, or its components on three common respiratory diseases, including lung function decline, chronic obstructive pulmonary disease (COPD) and asthma...
December 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28052339/overview-of-systematic-reviews-in-allergy-epidemiology
#11
REVIEW
Jon Genuneit, Annina M Seibold, Christian J Apfelbacher, George N Konstantinou, Jennifer J Koplin, Stefania La Grutta, Kirsty Logan, Michael R Perkin, Carsten Flohr
BACKGROUND: There is a substantial body of evidence on the epidemiology of allergic conditions, which has advanced the understanding of these conditions. We aimed to systematically identify systematic reviews and meta-analyses on the epidemiology of allergic diseases to assess what has been studied comprehensively and what areas might benefit from further research. METHODS: We searched PubMed and EMBASE up to 12/2014 for systematic reviews on epidemiological research on allergic diseases...
January 4, 2017: Allergy
https://www.readbyqxmd.com/read/28041838/ambient-fine-and-coarse-particulate-matter-pollution-and-respiratory-morbidity-in-dongguan-china
#12
Yiju Zhao, Shengyong Wang, Lingling Lang, Caiyan Huang, Wenjun Ma, Hualiang Lin
We estimated the short-term effects of particulate matter (PM) pollution with aerodynamic diameters ≤2.5 μm (PM2.5) and between 2.5 and 10 μm (PMc) on hospital outpatient visits due to overall and specific respiratory diseases, as well as the associated morbidity burden in Dongguan, a subtropical city in South China. A time-series model with quasi-Poisson link was used to examine the association between PM pollution and morbidities from respiratory diseases, COPD, asthma and pneumonia in Dongguan during 2013-2015...
December 29, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/28032933/swimming-attendance-during-childhood-and-development-of-asthma-a-meta-analysis
#13
F Valeriani, C Protano, M Vitali, V Romano Spica
BACKGROUND: The association between asthma and swimming pool attendance has not been demonstrated and contrasting results emerged. In order to clarify the association between asthma diagnosis in children and swimming pool attendance, and to assess the consistency of findings of the available epidemiological studies, we completed a literature analysis focusing on literature about the relationship between the exposure to disinfection by-products in indoor swimming pool during childhood and asthma diagnosis...
December 29, 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28024227/the-role-of-outdoor-fungi-on-asthma-hospital-admissions-in-children-and-adolescents-a-5-year-time-stratified-case-crossover-analysis
#14
Rachel Tham, Constance H Katelaris, Don Vicendese, Shyamali C Dharmage, Adrian J Lowe, Gayan Bowatte, Philip Taylor, Pamela Burton, Michael J Abramson, Bircan Erbas
BACKGROUND: Some fungal spores can trigger asthma exacerbation but knowledge of which outdoor fungal spores contribute to asthma hospitalisation is limited. OBJECTIVES: To examine the role of outdoor fungal spores in child and adolescent asthma hospitalisations. METHODS: We conducted a bi-directional time-stratified case-crossover study of child and adolescent asthma hospitalisations over 5 years. Conditional logistic regression assessed the role of 20 fungi taxa (Same day [L0] and lagged [L1-3]) adjusted for maximum temperature, humidity and grass pollen...
December 23, 2016: Environmental Research
https://www.readbyqxmd.com/read/28005431/lung-development-and-aging
#15
Andrew Bush
The onset of chronic obstructive pulmonary disease (COPD) can arise either from failure to attain the normal spirometric plateau or from an accelerated decline in lung function. Despite reports from numerous big cohorts, no single adult life factor, including smoking, accounts for this accelerated decline. By contrast, five childhood risk factors (maternal and paternal asthma, maternal smoking, childhood asthma and respiratory infections) are strongly associated with an accelerated rate of lung function decline and COPD...
December 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28003638/chemical-toxicology-of-reactive-species-in-the-atmosphere-two-decades-of-progress-in-an-electron-acceptor-and-an-electrophile
#16
Yoshito Kumagai, Yumi Abiko, Nho Luong Cong
Air pollutants such as diesel exhaust particles (DEP) are thought to cause pulmonary diseases such as asthma as a result of oxidative stress. While DEP contain a large number of polycyclic aromatic hydrocarbons, we have focused on 9,10-phenanthrenequinone (9,10-PQ) and 1,2-naphthoquinone (1,2-NQ) because of their chemical properties based on their oxidative and chemical modification capabilities. We have found that 9,10-PQ interacts with electron donors such as NADPH (in the presence of enzymes) and dithiols, resulting in generation of excess reactive oxygen species (ROS) through redox cycling...
2016: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/27984424/estimating-acute-cardiorespiratory-effects-of-ambient-volatile-organic-compounds
#17
Dongni Ye, Mitchel Klein, Howard H Chang, Jeremy A Sarnat, James A Mulholland, Eric S Edgerton, Andrea Winquist, Paige E Tolbert, Stefanie Ebelt Sarnat
BACKGROUND: The health effects of ambient volatile organic compounds (VOCs) have received less attention in epidemiologic studies than other commonly measured ambient pollutants. In this study, we estimated acute cardiorespiratory effects of ambient VOCs in an urban population. METHODS: Daily concentrations of 89 VOCs were measured at a centrally-located ambient monitoring site in Atlanta and daily counts of emergency department visits for cardiovascular diseases and asthma in the 5-county Atlanta area were obtained for the 1998-2008 period...
December 12, 2016: Epidemiology
https://www.readbyqxmd.com/read/27983715/fine-particulate-matter-in-urban-environments-a-trigger-of-respiratory-symptoms-in-sensitive-children
#18
Daniel Dunea, Stefania Iordache, Alin Pohoata
The overall objective of this research was to study children's respiratory illness levels in Targoviste (Romania) in relationship to the outdoor concentrations of airborne particulate matter with an aerodynamic diameter below 2.5 µm (PM2.5). We monitored and analysed the PM2.5 concentrations according to a complex experimental protocol. The health trial was conducted over three months (October-December 2015) and required the active cooperation of the children's parents to monitor carefully the respiratory symptoms of the child, i...
December 15, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27977410/how-serious-are-health-impacts-in-one-of-the-most-polluted-regions-of-central-europe
#19
Vítězslav Jiřík, Andrea Dalecká, Veronika Vašendová, Jana Janoutová, Vladimír Janout
BACKGROUND: The long-term exposure to pollutants in ambient air is associated with higher mortality and occurrence of respiratory and cardiopulmonary diseases. The longitudinal cross-section study focuses on the associations between long-term exposures to carcinogenic and non-carcinogenic pollutants and the prevalence and incidence of such specific diseases including immunodeficiencies. METHODS: The data on health status from industrial and non-industrial regions were obtained from health documentation for a 5-year period from 2007 to 2011 and represent the whole population living in polluted (1,249,323 inhabitants) and unpolluted (631,387 inhabitants) regions...
December 15, 2016: Reviews on Environmental Health
https://www.readbyqxmd.com/read/27976942/can-extreme-air-pollution-events-provide-a-window-into-incident-asthma
#20
Chantel D Sloan, James D Johnston
No abstract text is available yet for this article.
December 15, 2016: American Journal of Respiratory and Critical Care Medicine
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