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Zheng XY, Guo SJ, Hu JX, Meng RL, Xu YJ, Lv YH, Wang Y, Xiao N, Li C, Xu XJ, Zhao DJ, Zhou HY, He JH, Tan XM, Wei J, Lin LF, Guan WJ. Long-term associations of PM 1 versus PM 2.5 and PM 10 with asthma and asthma-related respiratory symptoms in the middle-aged and elderly population. ERJ Open Res 2024; 10:00972-2023. [PMID: 38957167 PMCID: PMC11215765 DOI: 10.1183/23120541.00972-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/25/2024] [Indexed: 07/04/2024] Open
Abstract
Background Few studies have compared the associations between long-term exposures to particulate matters (aerodynamic diameter ≤1, ≤2.5 and ≤10 µm: PM1, PM2.5 and PM10, respectively) and asthma and asthma-related respiratory symptoms. The objective of the present study was to compare the strength of the aforementioned associations in middle-aged and elderly adults. Methods We calculated the mean 722-day personal exposure estimates of PM1, PM2.5 and PM10 at 1 km×1 km spatial resolution between 2013 and 2019 at individual levels from China High Air Pollutants (CHAP) datasets. Using logistic regression models, we presented the associations as odds ratios and 95% confidence intervals, for each interquartile range (IQR) increase in PM1/PM2.5/PM10 concentration. Asthma denoted a self-reported history of physician-diagnosed asthma or wheezing in the preceding 12 months. Results We included 7371 participants in COPD surveillance from Guangdong, China. Each IQR increase in PM1, PM2.5 and PM10 was associated with a greater odds (OR (95% CI)) of asthma (PM1: 1.22 (1.02-1.45); PM2.5: 1.24 (1.04-1.48); PM10: 1.30 (1.07-1.57)), wheeze (PM1: 1.27 (1.11-1.44); PM2.5: 1.30 (1.14-1.48); PM10: 1.34 (1.17-1.55)), persistent cough (PM1: 1.33 (1.06-1.66); PM2.5: 1.36 (1.09-1.71); PM10: 1.31 (1.02-1.68)) and dyspnoea (PM1: 2.10 (1.84-2.41); PM2.5: 2.17 (1.90-2.48); PM10: 2.29 (1.96-2.66)). Sensitivity analysis results were robust after excluding individuals with a family history of allergy. Associations of PM1, PM2.5 and PM10 with asthma and asthma-related respiratory symptoms were slightly stronger in males. Conclusion Long-term exposure to PM is associated with increased risks of asthma and asthma-related respiratory symptoms.
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Affiliation(s)
- Xue-yan Zheng
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
- Xue-yan Zheng, Shu-jun Guo and Jian-xiong Hu contributed equally to this article as joint first authors
| | - Shu-jun Guo
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Xue-yan Zheng, Shu-jun Guo and Jian-xiong Hu contributed equally to this article as joint first authors
| | - Jian-xiong Hu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
- Xue-yan Zheng, Shu-jun Guo and Jian-xiong Hu contributed equally to this article as joint first authors
| | - Rui-lin Meng
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Yan-jun Xu
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Yun-hong Lv
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Ye Wang
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Ni Xiao
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Chuan Li
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Xiao-jun Xu
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - De-jian Zhao
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - Hong-ye Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jia-hui He
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiao-min Tan
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jing Wei
- Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA
| | - Li-feng Lin
- Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
- School of Public Health, Southern Medical University, Guangzhou, China
- Li-feng Lin and Wei-jie Guan contributed equally to this article as lead authors and supervised the work
| | - Wei-jie Guan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Department of Respiratory and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Thoracic Surgery, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou National Laboratory, Guangzhou, China
- Li-feng Lin and Wei-jie Guan contributed equally to this article as lead authors and supervised the work
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Farzan SF, Kamai E, Barahona DD, Van Horne Ornelas Y, Zuidema C, Wong M, Torres C, Bejarano E, Seto E, English P, Olmedo L, Johnston J. Cohort profile: The Assessing Imperial Valley Respiratory Health and the Environment (AIRE) study. Paediatr Perinat Epidemiol 2024; 38:359-369. [PMID: 38450855 PMCID: PMC11116055 DOI: 10.1111/ppe.13065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/13/2024] [Accepted: 02/20/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND The Children's Assessing Imperial Valley Respiratory Health and the Environment (AIRE) study is a prospective cohort study of environmental influences on respiratory health in a rural, southeastern region of California (CA), which aims to longitudinally examine the contribution of a drying saline lake to adverse health impacts in children. OBJECTIVES This cohort was established through a community-academic partnership with the goal of assessing the health effects of childhood exposures to wind-blown particulate matter (PM) and inform public health action. We hypothesize that local PM sources are related to poorer children's respiratory health. POPULATION Elementary school children in Imperial Valley, CA. DESIGN Prospective cohort study. METHODS Between 2017 and 2019, we collected baseline information on 731 children, then follow-up assessments yearly or twice-yearly since 2019. Data have been collected on children's respiratory health, demographics, household characteristics, physical activity and lifestyle, via questionnaires completed by parents or primary caregivers. In-person measurements, conducted since 2019, repeatedly assessed lung function, height, weight and blood pressure. Exposure to air pollutants has been assessed by multiple methods and individually assigned to participants using residential and school addresses. Health data will be linked to ambient and local sources of PM, during and preceding the study period to understand how spatiotemporal trends in these environmental exposures may relate to respiratory health. PRELIMINARY RESULTS Analyses of respiratory symptoms indicate a high prevalence of allergies, bronchitic symptoms and wheezing. Asthma diagnosis was reported in 24% of children at enrolment, which exceeds both CA state and US national prevalence estimates for children. CONCLUSIONS The Children's AIRE cohort, while focused on the health impacts of the drying Salton Sea and air quality in Imperial Valley, is poised to elucidate the growing threat of drying saline lakes and wind-blown dust sources to respiratory health worldwide, as sources of wind-blown dust emerge in our changing climate.
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Affiliation(s)
- Shohreh F. Farzan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Elizabeth Kamai
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Dayane Duenas Barahona
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Yoshira Van Horne Ornelas
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Christopher Zuidema
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Michelle Wong
- Tracking California, Public Health Institute, Oakland, CA, USA
| | | | | | - Edmund Seto
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Paul English
- Tracking California, Public Health Institute, Oakland, CA, USA
| | | | - Jill Johnston
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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3
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Mohazzab-Hosseinian S, Garcia E, Wiemels J, Marconett C, Corona K, Howe CG, Foley H, Farzan SF, Bastain TM, Breton CV. Effect of parental adverse childhood experiences on intergenerational DNA methylation signatures from peripheral blood mononuclear cells and buccal mucosa. Transl Psychiatry 2024; 14:89. [PMID: 38342906 PMCID: PMC10859367 DOI: 10.1038/s41398-024-02747-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 12/15/2023] [Accepted: 01/08/2024] [Indexed: 02/13/2024] Open
Abstract
In this study, the effect of cumulative ACEs experienced on human maternal DNA methylation (DNAm) was estimated while accounting for interaction with domains of ACEs in prenatal peripheral blood mononuclear cell samples from the Maternal and Developmental Risks from Environmental Stressors (MADRES) pregnancy cohort. The intergenerational transmission of ACE-associated DNAm was also explored used paired maternal (N = 120) and neonatal cord blood (N = 69) samples. Replication in buccal samples was explored in the Children's Health Study (CHS) among adult parental (N = 31) and pediatric (N = 114) samples. We used a four-level categorical indicator variable for ACEs exposure: none (0 ACEs), low (1-3 ACEs), moderate (4-6 ACEs), and high (>6 ACEs). Effects of ACEs on maternal DNAm (N = 240) were estimated using linear models. To evaluate evidence for intergenerational transmission, mediation analysis (N = 60 mother-child pairs) was used. Analysis of maternal samples displayed some shared but mostly distinct effects of ACEs on DNAm across low, moderate, and high ACEs categories. CLCN7 and PTPRN2 was associated with maternal DNAm in the low ACE group and this association replicated in the CHS. CLCN7 was also nominally significant in the gene expression correlation analysis among maternal profiles (N = 35), along with 11 other genes. ACE-associated methylation was observed in maternal and neonatal profiles in the COMT promoter region, with some evidence of mediation by maternal COMT methylation. Specific genomic loci exhibited mutually exclusive maternal ACE effects on DNAm in either maternal or neonatal population. There is some evidence for an intergenerational effect of ACEs, supported by shared DNAm signatures in the COMT gene across maternal-neonatal paired samples.
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Affiliation(s)
- Sahra Mohazzab-Hosseinian
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA.
| | - Erika Garcia
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Joseph Wiemels
- Center for Genetic Epidemiology, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Crystal Marconett
- Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
- Hastings Center for Pulmonary Research, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
- Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
- Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Karina Corona
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Caitlin G Howe
- Geisel School of Medicine at Dartmouth, 1 Medical Center Dr, Lebanon, NH, 03756, USA
| | - Helen Foley
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Shohreh F Farzan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Theresa M Bastain
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Carrie V Breton
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA.
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Kamai EM, Ruiz BC, Van Horne YO, Barahona DD, Bejarano E, Olmedo L, Eckel SP, Johnston JE, Farzan SF. Agricultural burning in Imperial Valley, California and respiratory symptoms in children: A cross-sectional, repeated measures analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165854. [PMID: 37516194 PMCID: PMC10592232 DOI: 10.1016/j.scitotenv.2023.165854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/07/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Burning of agricultural fields is an understudied source of air pollution in rural communities in the United States. Smoke from agricultural burning contains air toxics that adversely impact respiratory health. Imperial County in southeastern California is a highly productive agricultural valley that heavily employs agricultural burning to clear post-harvest crop remnants. We related individual-level exposure to agricultural burns to parent-reported respiratory symptoms in children. We leveraged the Children's Assessing Imperial Valley Respiratory Health and the Environment (AIRE) cohort of 735 predominantly Hispanic low-income elementary school students in Imperial County. Parents reported children's respiratory health symptoms and family demographic characteristics in questionnaires collected at enrollment and in annual follow-up assessments from 2017 to 2019. Permitted agricultural burns in Imperial County from 2016 to 2019 were spatially linked to children's geocoded residential addresses. We used generalized estimating equations to evaluate prevalence differences (PDs) in respiratory symptoms with increasing exposure to agricultural burning within 3 km in the 12 months prior to each assessment. Nearly half of children (346, 49 %) lived within 3 km of at least one agricultural burn in the year prior to study enrollment. In adjusted models, each additional day of agricultural burning in the prior year was associated with a one percentage point higher prevalence of wheezing (PD 1.1 %; 95 % CI 0.2 %, 2.0 %) and higher bronchitic symptoms (PD 1.0 %; 95 % CI -0.2 %, 2.1 %). Children exposed to four or more days of burning had an absolute increased prevalence of wheezing and bronchitic symptoms of 5.9 % (95 % CI -0.3 %, 12 %) and 5.6 % (95 % CI -1.8 %, 13 %), respectively, compared to no burn exposure. Associations with wheezing were stronger among children with asthma (PD 14 %; 95 % CI -1.4 %, 29 %). To our knowledge, this is the first U.S. study of agricultural burning and children's respiratory health. This work suggests that reducing agricultural burning could improve children's respiratory health.
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Affiliation(s)
- Elizabeth M Kamai
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
| | - Brandyn C Ruiz
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Yoshira Ornelas Van Horne
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Dayane Duenas Barahona
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | | | - Sandrah P Eckel
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jill E Johnston
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shohreh F Farzan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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McHugh EG, Grady ST, Collins CM, Moy ML, Hart JE, Coull BA, Schwartz JD, Koutrakis P, Zhang J, Garshick E. Pulmonary, inflammatory, and oxidative effects of indoor nitrogen dioxide in patients with COPD. Environ Epidemiol 2023; 7:e271. [PMID: 37840862 PMCID: PMC10569754 DOI: 10.1097/ee9.0000000000000271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/26/2023] [Accepted: 08/29/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction Indoor nitrogen dioxide (NO2) sources include gas heating, cooking, and infiltration from outdoors. Associations with pulmonary function, systemic inflammation, and oxidative stress in patients with chronic obstructive pulmonary disease (COPD) are uncertain. Methods We recruited 144 COPD patients at the VA Boston Healthcare System between 2012 and 2017. In-home NO2 was measured using an Ogawa passive sampling badge for a week seasonally followed by measuring plasma biomarkers of systemic inflammation (C-reactive protein [CRP] and interleukin-6 [IL-6]), urinary oxidative stress biomarkers (8-hydroxy-2'deoxyguanosine [8-OHdG] and malondialdehyde [MDA]), and pre- and postbronchodilator spirometry. Linear mixed effects regression with a random intercept for each subject was used to assess associations with weekly NO2. Effect modification by COPD severity and by body mass index (BMI) was examined using multiplicative interaction terms and stratum-specific effect estimates. Results Median (25%ile, 75%ile) concentration of indoor NO2 was 6.8 (4.4, 11.2) ppb. There were no associations observed between NO2 with CRP, 8-OHdG, or MDA. Although the confidence intervals were wide, there was a reduction in prebronchodilator FEV1 and FVC among participants with more severe COPD (FEV1: -17.36 mL; -58.35, 23.60 and FVC: -28.22 mL; -91.49, 35.07) that was greater than in patients with less severe COPD (FEV1: -1.64 mL; -24.80, 21.57 and FVC: -6.22 mL; -42.16, 29.71). In participants with a BMI <30, there was a reduction in FEV1 and FVC. Conclusions Low-level indoor NO2 was not associated with systemic inflammation or oxidative stress. There was a suggestive association with reduced lung function among patients with more severe COPD and among patients with a lower BMI.
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Affiliation(s)
- Erin G McHugh
- Research and Development Service, VA Boston Healthcare System, Boston, Massachusetts
| | - Stephanie T Grady
- Research and Development Service, VA Boston Healthcare System, Boston, Massachusetts
- Boston University School of Public Health, Boston, Massachusetts
| | - Christina M Collins
- Research and Development Service, VA Boston Healthcare System, Boston, Massachusetts
| | - Marilyn L Moy
- Pulmonary, Allergy, Sleep, and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, Massachusetts
- Harvard Medical School, Boston, Massachusetts
| | - Jaime E Hart
- Harvard Medical School, Boston, Massachusetts
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Brent A Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Joel D Schwartz
- Harvard Medical School, Boston, Massachusetts
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Petros Koutrakis
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - J Zhang
- Duke University Nicholas School of the Environment, Durham, North Carolina
| | - Eric Garshick
- Pulmonary, Allergy, Sleep, and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, Massachusetts
- Harvard Medical School, Boston, Massachusetts
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
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Arslan B, Çetin GP, Yilmaz İ. The Role of Long-Acting Antimuscarinic Agents in the Treatment of Asthma. J Aerosol Med Pulm Drug Deliv 2023; 36:189-209. [PMID: 37428619 DOI: 10.1089/jamp.2022.0059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023] Open
Abstract
The journey of using anticholinergics in the treatment of asthma started with anticholinergic-containing plants such as Datura stramonium and Atropa belladonna, followed by ipratropium bromide and continued with tiotropium, glycopyrronium, and umeclidinium. Although antimuscarinics were used in the maintenance treatment of asthma over a century ago, after a long time (since 2014), it has been recommended to be used as an add-on long-acting antimuscarinic agent (LAMA) therapy in the maintenance treatment of asthma. The airway tone controlled by the vagus nerve is increased in asthma. Allergens, toxins, or viruses cause airway inflammation and inflammation-related epithelial damage, increased sensory nerve stimulation, ganglionic and postganglionic acetylcholine (ACh) release by inflammatory mediators, intensification of ACh signaling at M1 and M3 muscarinic ACh receptors (mAChRs), and dysfunction of M2 mAChR. Optimal anticholinergic drug for asthma should effectively block M3 and M1 receptors, but have minimal effect on M2 receptors. Tiotropium, umeclidinium, and glycopyrronium are anticholinergic agents with this feature. Tiotropium has been used in a separate inhaler as an add-on treatment to inhaled corticosteroid (ICS)/long-acting β2-agonist (LABA), and glycopyrronium and umeclidinium have been used in a single inhaler as a combination of ICS/LABA/LAMA in asthma in recent years. Guidelines recommend this regimen as an optimization step for patients with severe asthma before initiating any biologic or systemic corticosteroid therapy. In this review, the history of antimuscarinic agents, their effectiveness and safety in line with randomized controlled trials, and real-life studies in asthma treatment will be discussed according to the current data.
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Affiliation(s)
- Bahar Arslan
- Division of Immunology and Allergy, Department of Chest Diseases, Erciyes University School of Medicine, Kayseri, Turkey
| | - Gülden Paçacı Çetin
- Division of Immunology and Allergy, Department of Chest Diseases, Erciyes University School of Medicine, Kayseri, Turkey
| | - İnsu Yilmaz
- Division of Immunology and Allergy, Department of Chest Diseases, Erciyes University School of Medicine, Kayseri, Turkey
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7
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Mohazzab-Hosseinian S, Garcia E, Wiemels J, Marconett C, Corona K, Howe C, Foley H, Lerner D, Lurvey N, Farzan S, Bastain T, Breton C. Effect of Parental Adverse Childhood Experiences on Intergenerational DNA Methylation Signatures. RESEARCH SQUARE 2023:rs.3.rs-2977515. [PMID: 37461498 PMCID: PMC10350189 DOI: 10.21203/rs.3.rs-2977515/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
Adverse Childhood Experiences (ACEs) are events that occur before a child turns 18 years old that may cause trauma. In this study, the effect of cumulative ACEs experienced on human maternal DNA methylation (DNAm) was estimated while accounting for interaction with domains of ACEs in prenatal peripheral blood mononuclear cell samples from the Maternal and Developmental Risks from Environmental Stressors (MADRES) pregnancy cohort. The intergenerational transmission of ACE-associated DNAm was also explored used paired maternal and neonatal cord blood samples. Replication in buccal samples was explored in the Children's Health Study (CHS). We used a four-level categorical indicator variable for ACEs exposure: none (0 ACEs), low (1-3 ACEs), moderate (4-6 ACEs), and high (> 6 ACEs). Effects of ACEs on maternal DNAm (N = 240) were estimated using linear models. To evaluate evidence for intergenerational transmission, mediation analysis was used. Analysis of maternal samples displayed some shared but mostly distinct effects of ACEs on DNAm across low, moderate, and high ACEs categories. CLCN7 and PTPRN2 was associated with maternal DNAm in the low ACE group and this association replicated in the CHS. ACE-associated methylation was observed in maternal and neonatal profiles in the COMT promoter region, with some evidence of mediation by maternal COMT methylation. Specific genomic loci exhibited mutually exclusive maternal ACE effects on DNAm in either maternal or neonatal population. There is some evidence for an intergenerational effect of ACEs, supported by shared DNAm signatures in the COMT gene across maternal-neonatal paired samples.
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8
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Amnuaylojaroen T, Parasin N. Future Health Risk Assessment of Exposure to PM 2.5 in Different Age Groups of Children in Northern Thailand. TOXICS 2023; 11:291. [PMID: 36977056 PMCID: PMC10057456 DOI: 10.3390/toxics11030291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/17/2023] [Accepted: 03/21/2023] [Indexed: 06/18/2023]
Abstract
Particulate matter with a diameter less than 2.5 (PM2.5) is one of the major threats posed by air pollution to human health. It penetrates the respiratory system, particularly the lungs. In northern Thailand, the PM2.5 concentrations have significantly increased in the past decade, becoming a major concern for the health of children. This study aimed to assess the health risk of PM2.5 in different age groups of children in northern Thailand between 2020 and 2029. Based on the PM2.5 data from the simulation of the Nested Regional Climate Model with Chemistry (NRCM-Chem), the hazard quotient (HQ) was used to estimate the possible risk from PM2.5 exposure in children. In general, all age groups of children in northern Thailand will tend to experience the threat of PM2.5 in the future. In the context of age-related development periods, infants are at a higher risk than other groups (toddlers, young children, school age and adolescents), but adolescents also have a lower risk of exposure to PM2.5, albeit maintaining a high HQ value (>1). Moreover, the analysis of risk assessment in different age groups of children revealed that PM2.5 exposure might indeed affect adolescent risk differently depending on gender, with males generally at a heightened risk than females in adolescence.
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Affiliation(s)
- Teerachai Amnuaylojaroen
- Department of Environmental Science, School of Energy and Environment, University of Phayao, Phayao 56000, Thailand;
- Atmospheric Pollution and Climate Research Unit, School of Energy and Environment, University of Phayao, Phayao 56000, Thailand
| | - Nichapa Parasin
- School of Allied Health Science, University of Phayao, Phayao 56000, Thailand
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Wheatley LM, Holloway JW, Svanes C, Sears MR, Breton C, Fedulov AV, Nilsson E, Vercelli D, Zhang H, Togias A, Arshad SH. The role of epigenetics in multi-generational transmission of asthma: An NIAID workshop report-based narrative review. Clin Exp Allergy 2022; 52:1264-1275. [PMID: 36073598 PMCID: PMC9613603 DOI: 10.1111/cea.14223] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 01/26/2023]
Abstract
There is mounting evidence that environmental exposures can result in effects on health that can be transmitted across generations, without the need for a direct exposure to the original factor, for example, the effect of grandparental smoking on grandchildren. Hence, an individual's health should be investigated with the knowledge of cross-generational influences. Epigenetic factors are molecular factors or processes that regulate genome activity and may impact cross-generational effects. Epigenetic transgenerational inheritance has been demonstrated in plants and animals, but the presence and extent of this process in humans are currently being investigated. Experimental data in animals support transmission of asthma risk across generations from a single exposure to the deleterious factor and suggest that the nature of this transmission is in part due to changes in DNA methylation, the most studied epigenetic process. The association of father's prepuberty exposure with offspring risk of asthma and lung function deficit may also be mediated by epigenetic processes. Multi-generational birth cohorts are ideal to investigate the presence and impact of transfer of disease susceptibility across generations and underlying mechanisms. However, multi-generational studies require recruitment and assessment of participants over several decades. Investigation of adult multi-generation cohorts is less resource intensive but run the risk of recall bias. Statistical analysis is challenging given varying degrees of longitudinal and hierarchical data but path analyses, structural equation modelling and multilevel modelling can be employed, and directed networks addressing longitudinal effects deserve exploration as an effort to study causal pathways.
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Affiliation(s)
- Lisa M. Wheatley
- National Institute of Allergy and Infectious DiseaseNational Institutes of HealthBethesdaMarylandUSA
| | - John W. Holloway
- Faculty of Medicine, Human Development and HealthUniversity of SouthamptonSouthamptonUK
| | - Cecilie Svanes
- Department of Global Public Health and Primary CareUniversity of BergenBergenNorway
| | | | - Carrie Breton
- University of Southern CaliforniaLos AngelesCaliforniaUSA
| | - Alexey V. Fedulov
- Warren Alpert Medical School of Brown University, Rhode Island HospitalProvidenceRhode IslandUSA
| | - Eric Nilsson
- Washington State University PullmanPullmanWashingtonUSA
| | | | - Hongmei Zhang
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public HealthUniversity of MemphisMemphisTennesseeUSA
| | - Alkis Togias
- National Institute of Allergy and Infectious DiseaseNational Institutes of HealthBethesdaMarylandUSA
| | - Syed Hasan Arshad
- Clinical and Experimental Sciences, Faculty of MedicineUniversity of SouthamptonSouthamptonUK
- The David Hide Asthma and Allergy CentreSt Mary's HospitalNewportUK
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10
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Heibati B, Jaakkola MS, Lajunen TK, Ducatman A, Veysi R, Karimi A, Jaakkola JJK. Do hospital workers experience a higher risk of respiratory symptoms and loss of lung function? BMC Pulm Med 2022; 22:303. [PMID: 35941624 PMCID: PMC9358815 DOI: 10.1186/s12890-022-02098-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/18/2022] [Indexed: 01/09/2023] Open
Abstract
Background Hospital work environment contains various biological and chemical exposures that can affect indoor air quality and have impact on respiratory health of the staff. The objective of this study was to investigate potential effects of occupational exposures on the risk of respiratory symptoms and lung function in hospital work, and to evaluate potential interaction between smoking and occupational exposures. Methods We conducted a cross-sectional study of 228 staff members in a hospital and 228 employees of an office building as the reference group in Shiraz, Iran. All subjects completed a standardized ATS respiratory questionnaire and performed a spirometry test. Results In Poisson regression, the adjusted prevalence ratios (aPR) among the hospital staff were elevated for cough (aPR 1.90, 95% CI 1.15, 3.16), phlegm production (aPR 3.21, 95% CI 1.63, 6.32), productive cough (aPR 2.83, 95% CI 1.48, 5.43), wheezing (aPR 3.18, 95% CI 1.04, 9.66), shortness of breath (aPR 1.40, 95% CI 0.93, 2.12), and chest tightness (aPR 1.73, 95% CI 0.73, 4.12). Particularly laboratory personnel experienced increased risks of most symptoms. In linear regression adjusting for confounding, there were no significant differences in lung function between the hospital and office workers. There was an indication of synergism between hospital exposures and current smoking on FEV1/FVC% (interaction term β = − 5.37, 95% CI − 10.27, − 0.47). Conclusions We present significant relations between hospital work, especially in laboratories, and increased risks of respiratory symptoms. Smoking appears to enhance these effects considerably. Our findings suggest that policymakers should implement evidence-based measures to prevent these occupational exposures. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02098-5.
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Affiliation(s)
- Behzad Heibati
- Faculty of Medicine, Center for Environmental and Respiratory Health Research, University of Oulu, Aapistie 5B, P.O. Box 5000, 90014, Oulu, Finland.,Faculty of Medicine, Biocenter Oulu, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital, University of Oulu, P.O. Box 8000, 90014, Oulu, Finland
| | - Maritta S Jaakkola
- Faculty of Medicine, Center for Environmental and Respiratory Health Research, University of Oulu, Aapistie 5B, P.O. Box 5000, 90014, Oulu, Finland.,Faculty of Medicine, Biocenter Oulu, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital, University of Oulu, P.O. Box 8000, 90014, Oulu, Finland
| | - Taina K Lajunen
- Faculty of Medicine, Center for Environmental and Respiratory Health Research, University of Oulu, Aapistie 5B, P.O. Box 5000, 90014, Oulu, Finland.,Faculty of Medicine, Biocenter Oulu, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital, University of Oulu, P.O. Box 8000, 90014, Oulu, Finland
| | - Alan Ducatman
- West Virginia University School of Public Health, Morgantown, WV, USA
| | - Rahmat Veysi
- Department of Occupational Health Engineering, School of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Karimi
- Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Jouni J K Jaakkola
- Faculty of Medicine, Center for Environmental and Respiratory Health Research, University of Oulu, Aapistie 5B, P.O. Box 5000, 90014, Oulu, Finland. .,Faculty of Medicine, Biocenter Oulu, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland. .,Medical Research Center Oulu, Oulu University Hospital, University of Oulu, P.O. Box 8000, 90014, Oulu, Finland. .,Finnish Meteorological Institute, P.O. Box 503, 00101, Helsinki, Finland.
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11
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Correlation between air pollution and prevalence of conjunctivitis in South Korea using analysis of public big data. Sci Rep 2022; 12:10091. [PMID: 35710775 PMCID: PMC9203752 DOI: 10.1038/s41598-022-13344-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 05/23/2022] [Indexed: 11/30/2022] Open
Abstract
This study investigated how changes in weather factors affect the prevalence of conjunctivitis using public big data in South Korea. A total of 1,428 public big data entries from January 2013 to December 2019 were collected. Disease data and basic climate/air pollutant concentration records were collected from nationally provided big data. Meteorological factors affecting eye diseases were identified using multiple linear regression and machine learning analysis methods such as extreme gradient boosting (XGBoost), decision tree, and random forest. The prediction model with the best performance was XGBoost (1.180), followed by multiple regression (1.195), random forest (1.206), and decision tree (1.544) when using root mean square error (RMSE) values. With the XGBoost model, province was the most important variable (0.352), followed by month (0.289) and carbon monoxide exposure (0.133). Other air pollutants including sulfur dioxide, PM10, nitrogen dioxides, and ozone showed low associations with conjunctivitis. We identified factors associated with conjunctivitis using traditional multiple regression analysis and machine learning techniques. Regional factors were important for the prevalence of conjunctivitis as well as the atmosphere and air quality factors.
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12
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Lee KY, Wu SM, Kou HY, Chen KY, Chuang HC, Feng PH, Chung KF, Ito K, Chen TT, Sun WL, Liu WT, Tseng CH, Ho SC. Association of air pollution exposure with exercise-induced oxygen desaturation in COPD. Respir Res 2022; 23:77. [PMID: 35361214 PMCID: PMC8973558 DOI: 10.1186/s12931-022-02000-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/18/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There is a link between exposure to air pollution and the increased prevalence of chronic obstructive pulmonary disease (COPD) and declining pulmonary function, but the association with O2 desaturation during exercise in COPD patients with emphysema is unclear. Our aims were to estimate the prevalence of O2 desaturation during exercise in patients with COPD, and determine the association of exposure to air pollution with exercise-induced desaturation (EID), the degree of emphysema, and dynamic hyperinflation (DH). METHODS We assessed the effects of 10-year prior to the HRCT assessment and 7 days prior to the six-minute walking test exposure to particulate matter with an aerodynamic diameter of < 10 µm (PM10) or of < 2.5 µM (PM2.5), nitrogen dioxide (NO2), and ozone (O3) in patients with emphysema in this retrospective cohort study. EID was defined as a nadir standard pulse oximetry (SpO2) level of < 90% or a delta (△)SpO2 level of ≥ 4%. Ambient air pollutant (PM2.5, PM10, O3, and NO2) data were obtained from Taiwan Environmental Protection Administration (EPA) air-monitoring stations, usually within 10 km to each participant's home address. RESULTS We recruited 141 subjects with emphysema. 41.1% of patients with emphysema exhibited EID, and patients with EID had more dyspnea, worse lung function, more severe emphysema, more frequent acute exacerbations, managed a shorter walking distance, had DH, and greater long-term exposure to air pollution than those without EID. We observed that levels of 10-year concentrations of PM10, PM2.5, and NO2 were significantly associated with EID, PM10 and PM2.5 were associated with the severity of emphysema, and associated with DH in patients with emphysema. In contrast, short-term exposure did not have any effect on patients. CONCLUSION Long-term exposure to ambient PM10, PM2.5 and NO2, but not O3, was associated with EID.
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Affiliation(s)
- Kang-Yun Lee
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Sheng-Ming Wu
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsiao-Yun Kou
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kuan-Yuan Chen
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Hsiao-Chi Chuang
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Cell Physiology and Molecular Image Research Center, Taipei Municipal Wan Fang Hospital, Taipei, Taiwan
| | - Po-Hao Feng
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Kazuhiro Ito
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Tzu-Tao Chen
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Wei-Lun Sun
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Wen-Te Liu
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Division of Pulmonary Medicine, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chien-Hua Tseng
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Shu-Chuan Ho
- Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan. .,School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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13
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E-cigarette use and adverse respiratory symptoms among adolescents and Young adults in the United States. Prev Med 2021; 153:106766. [PMID: 34418439 PMCID: PMC8595821 DOI: 10.1016/j.ypmed.2021.106766] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/15/2021] [Accepted: 08/14/2021] [Indexed: 11/21/2022]
Abstract
E-cigarette use among adolescents and young adults has been associated with adverse respiratory symptoms, including symptoms of asthma and bronchitis. This investigation examined whether such associations differ by primary type of e-cigarette device used. This cross-sectional study included data from four study populations in California and Connecticut, United States, ages 13-21 years (N = 10,483), who self-reported their tobacco use behaviors and health status from 2018 to 2020. Adverse respiratory symptoms were grouped as bronchitis, asthma exacerbation, and shortness of breath. Associations with e-cigarette use were examined by frequency of e-cigarette use (regardless of device type) and most-frequently use device type in the past 30 days (pod, pen/tank, disposable, or mod). Multivariable modeling accounted for demographic variables and use of other tobacco and cannabis. Results were pooled at the study level via random-effects meta-analysis. Across the four studies, e-cigarette use >5 days/month versus never use was associated with bronchitic symptoms (summary odds ratio, sOR: 1.56; 95% confidence interval, CI: 1.37, 1.77) and shortness of breath (sOR: 1.68; 95% CI: 1.35, 2.08) but not statistically significantly with asthma exacerbations (sOR: 1.36; 95% CI; 0.95, 1.95). Among past 30-day e-cigarette users, associations with respiratory symptoms did not differ by device type. In these populations, e-cigarette use was positively associated with symptoms of bronchitis and shortness of breath, but adjusted odds of symptoms did not differ meaningfully by device type. These findings suggest that risk of these respiratory outcomes is elevated among more frequent e-cigarette users regardless of device type used.
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14
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Laursen KR, Rasmussen BB, Rosati B, Gutzke VH, Østergaard K, Ravn P, Kjaergaard SK, Bilde M, Glasius M, Sigsgaard T. Acute health effects from exposure to indoor ultrafine particles-A randomized controlled crossover study among young mild asthmatics. INDOOR AIR 2021; 31:1993-2007. [PMID: 34235780 DOI: 10.1111/ina.12902] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 06/09/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Particulate matter is linked to adverse health effects, however, little is known about health effects of particles emitted from typical indoor sources. We examined acute health effects of short-term exposure to emissions from cooking and candles among asthmatics. In a randomized controlled double-blinded crossover study, 36 young non-smoking asthmatics attended three exposure sessions lasting 5 h: (a) air mixed with emissions from cooking (fine particle mass concentration): (PM2.5 : 96.1 μg/m3 ), (b) air mixed with emissions from candles (PM2.5 : 89.8 μg/m3 ), and c) clean filtered air (PM2.5 : 5.8 μg/m3 ). Health effects (spirometry, fractional exhaled Nitric Oxide [FeNO], nasal volume and self-reported symptoms) were evaluated before exposure start, then 5 and 24 h after. During exposures volatile organic compounds (VOCs), particle size distributions, number concentrations and optical properties were measured. Generally, no statistically significant changes were observed in spirometry, FeNO, or nasal volume comparing cooking and candle exposures to clean air. In males, nasal volume and FeNO decreased after exposure to cooking and candles, respectively. Participants reported additional and more pronounced symptoms during exposure to cooking and candles compared to clean air. The results indicate that emissions from cooking and candles exert mild inflammation in asthmatic males and decrease comfort among asthmatic males and females.
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Affiliation(s)
| | | | - Bernadette Rosati
- Department of Chemistry, Aarhus University, Aarhus, Denmark
- Faculty of Physics, University of Vienna, Vienna, Austria
| | - Vibeke Heitmann Gutzke
- Environment, Work and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Kirsten Østergaard
- Environment, Work and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Peter Ravn
- Environment, Work and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
| | | | - Merete Bilde
- Department of Chemistry, Aarhus University, Aarhus, Denmark
| | | | - Torben Sigsgaard
- Environment, Work and Health, Department of Public Health, Aarhus University, Aarhus, Denmark
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15
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Wipfli H, Kumie A, Atuyambe L, Oguge O, Rugigana E, Zacharias K, Simane B, Samet J, Berhane K. The GEOHealth Hub for Eastern Africa: Contributions and Lessons Learned. GEOHEALTH 2021; 5:e2021GH000406. [PMID: 34179671 PMCID: PMC8207685 DOI: 10.1029/2021gh000406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/04/2021] [Accepted: 05/17/2021] [Indexed: 06/13/2023]
Abstract
Externalities, such as air pollution and increased occupational hazards, resulting from global trends in climate change, rapid industrialization, and rapidly increasing populations are raising global concerns about the associated health risks. The Global Environmental and Occupational Health Hub for Eastern Africa was established to address some of these problems at national and regional levels through focused training and applied research that would yield evidence supporting policies and investments to mitigate risks of increasing environmental threats throughout the Eastern African region. Emphasis has been placed on air pollution, a leading risk factor for global mortality, accounting for over 7 million premature deaths or 8.7% of the 2017 global mortality burden. Despite the enormous disease burden that air pollution causes, global investment in air pollution monitoring and research capacity building in low-middle and middle-income countries have been inadequate. This study outlines the activities the Hub has undertaken in planning for and carrying out its initial capacity building and building its primary research programs and identifies central lessons that can inform other large global research partnerships.
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Affiliation(s)
| | | | - Lynn Atuyambe
- Makerere University School of Public HealthKampalaUganda
| | | | | | | | | | | | - Kiros Berhane
- Columbia University School of Public HealthNew YorkNYUSA
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16
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Johnston JE, Enebish T, Eckel SP, Navarro S, Shamasunder B. Respiratory health, pulmonary function and local engagement in urban communities near oil development. ENVIRONMENTAL RESEARCH 2021; 197:111088. [PMID: 33794173 PMCID: PMC8579779 DOI: 10.1016/j.envres.2021.111088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 05/28/2023]
Abstract
BACKGROUND Modern oil development frequently occurs in close proximity to human populations. Los Angeles, California is home to the largest urban oil field in the country with thousands of active oil and gas wells in very close proximity to homes, schools and parks, yet few studies have investigated potential health impacts. The neighborhoods along the Las Cienagas oil fields are situated in South LA, densely populated by predominantly low-income Black and Latinx families, many of whom are primarily Spanish-speakers. METHODS A cross-sectional community-based study was conducted between January 2017 and August 2019 among residents living <1000 m from two oil wells (one active, one idle) in the Las Cienagas oil field. We collected self-reported acute health symptoms and measured FEV1 (forced expiratory volume in the first second of exhalation) and FVC (forced vital capacity). We related lung function measures to distance and direction from an oil and gas development site using generalized linear models adjusted for covariates. RESULTS A total of 961 residents from two neighborhoods participated, the majority of whom identify as Latinx. Participants near active oil development reported significantly higher prevalence of wheezing, eye and nose irritation, sore throat and dizziness in the past 2 weeks. Among 747 valid spirometry tests, we observe that living near (less than 200 m) of oil operations was associated with, on average, -112 mL lower FEV1 (95% CI: -213, -10) and -128 mL lower FVC (95% CI: -252, -5) compared to residents living more than 200 m from the sites after adjustments for covariates, including age, sex, height, proximity to freeway, asthma status and smoking status. When accounting for predominant wind direction and proximity, we observe that residents living downwind and less than 200 m from oil operations have, on average, -414 mL lower FEV1 (95% CI: -636, -191) and -400 mL lower FVC (95% CI: -652, -147) compared to residents living upwind and more than 200 m from the wells. CONCLUSIONS Living nearby and downwind of urban oil and gas development sites is associated with lower lung function among residents, which may contribute to environmental health disparities.
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Affiliation(s)
- Jill E Johnston
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
| | - Temuulen Enebish
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Sandrah P Eckel
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Bhavna Shamasunder
- Department of Urban & Environmental Policy, Occidental College, Los Angeles, CA, USA
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17
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Ross MK, Eckel SP, Bui AAT, Gilliland FD. Asthma clustering methods: a literature-informed application to the children's health study data. J Asthma 2021; 59:1305-1318. [PMID: 33926348 DOI: 10.1080/02770903.2021.1923738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The heterogeneity of asthma has inspired widespread application of statistical clustering algorithms to a variety of datasets for identification of potentially clinically meaningful phenotypes. There has not been a standardized data analysis approach for asthma clustering, which can affect reproducibility and clinical translation of results. Our objective was to identify common and effective data analysis practices in the asthma clustering literature and apply them to data from a Southern California population-based cohort of schoolchildren with asthma. METHODS As of January 1, 2020, we reviewed key statistical elements of 77 asthma clustering studies. Guided by the literature, we used 12 input variables and three clustering methods (hierarchical clustering, k-medoids, and latent class analysis) to identify clusters in 598 schoolchildren with asthma from the Southern California Children's Health Study (CHS). RESULTS Clusters of children identified by latent class analysis were characterized by exhaled nitric oxide, FEV1/FVC, FEV1 percent predicted, asthma control and allergy score; and were predictive of control at two year follow up. Clusters from the other two methods were less clinically remarkable, primarily differentiated by sex and race/ethnicity and less predictive of asthma control over time. CONCLUSION Upon review of the asthma phenotyping literature, common approaches of data clustering emerged. When applying these elements to the Children's Health Study data, latent class analysis clusters-represented by exhaled nitric oxide and spirometry measures-had clinical relevance over time.
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Affiliation(s)
- Mindy K Ross
- Pediatrics, Pediatric Pulmonology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Sandrah P Eckel
- Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Alex A T Bui
- Radiology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Frank D Gilliland
- Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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18
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Farzan SF, Habre R, Danza P, Lurmann F, Gauderman WJ, Avol E, Bastain T, Hodis HN, Breton C. Childhood traffic-related air pollution and adverse changes in subclinical atherosclerosis measures from childhood to adulthood. Environ Health 2021; 20:44. [PMID: 33853624 PMCID: PMC8048028 DOI: 10.1186/s12940-021-00726-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/08/2021] [Indexed: 05/04/2023]
Abstract
BACKGROUND Chronic exposure to air pollutants is associated with increased risk of cardiovascular disease (CVD) among adults. However, little is known about how air pollution may affect the development of subclinical atherosclerosis in younger populations. Carotid artery intima-media thickness (CIMT) is a measure of subclinical atherosclerosis that provides insight into early CVD pathogenesis. METHODS In a pilot study of 70 participants from the Southern California Children's Health Study, we investigated CIMT progression from childhood to adulthood. Using carotid artery ultrasound images obtained at age 10 and follow-up images at age 21-22, we examined associations between childhood ambient and traffic-related air pollutants with changes in CIMT over time and attained adult CIMT using linear mixed-effects models adjusted for potential confounders. Average residential childhood exposures (i.e., birth to time of measurement at 10-11 years) were assigned for regional, ambient pollutants (ozone, nitrogen dioxide, particulate matter, interpolated from regulatory air monitoring data) and traffic-related nitrogen oxides (NOx) by road class (modeled using the CALINE4 line source dispersion model). Traffic density was calculated within a 300-m residential buffer. RESULTS For each 1 standard deviation (SD) increase in childhood traffic-related total NOx exposure, we observed greater yearly rate of change in CIMT from childhood to adulthood (β: 2.17 μm/yr, 95% CI: 0.78-3.56). Increases in annual rate of CIMT change from childhood to adulthood also were observed with freeway NOx exposure (β: 2.24 μm/yr, 95% CI: 0.84-3.63) and traffic density (β: 2.11 μm/yr, 95% CI: 0.79-3.43). Traffic exposures were also related to increases in attained CIMT in early adulthood. No associations of CIMT change or attained level were observed with ambient pollutants. CONCLUSIONS Overall, we observed adverse changes in CIMT over time in relation to childhood traffic-related NOx exposure and traffic density in our study population. While these results must be cautiously interpreted given the limited sample size, the observed associations of traffic measures with CIMT suggest a need for future studies to more fully explore this relationship.
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Affiliation(s)
- Shohreh F. Farzan
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
| | - Rima Habre
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
| | - Phoebe Danza
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
| | | | - W. James Gauderman
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
| | - Edward Avol
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
| | - Theresa Bastain
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
| | - Howard N. Hodis
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
- Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, CA 90089 USA
- Atherosclerosis Research Unit, University of Southern California, Los Angeles, CA 90089 USA
| | - Carrie Breton
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, 2001 N. Soto Street, Los Angeles, CA 90089 USA
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19
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Habre R, Girguis M, Urman R, Fruin S, Lurmann F, Shafer M, Gorski P, Franklin M, McConnell R, Avol E, Gilliland F. Contribution of tailpipe and non-tailpipe traffic sources to quasi-ultrafine, fine and coarse particulate matter in southern California. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2021; 71:209-230. [PMID: 32990509 PMCID: PMC8112073 DOI: 10.1080/10962247.2020.1826366] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/21/2020] [Accepted: 09/09/2020] [Indexed: 05/19/2023]
Abstract
Exposure to traffic-related air pollution (TRAP) in the near-roadway environment is associated with multiple adverse health effects. To characterize the relative contribution of tailpipe and non-tailpipe TRAP sources to particulate matter (PM) in the quasi-ultrafine (PM0.2), fine (PM2.5) and coarse (PM2.5-10) size fractions and identify their spatial determinants in southern California (CA). Month-long integrated PM0.2, PM2.5 and PM2.5-10 samples (n = 461, 265 and 298, respectively) were collected across cool and warm seasons in 8 southern CA communities (2008-9). Concentrations of PM mass, elements, carbons and major ions were obtained. Enrichment ratios (ER) in PM0.2 and PM10 relative to PM2.5 were calculated for each element. The Positive Matrix Factorization model was used to resolve and estimate the relative contribution of TRAP sources to PM in three size fractions. Generalized additive models (GAMs) with bivariate loess smooths were used to understand the geographic variation of TRAP sources and identify their spatial determinants. EC, OC, and B had the highest median ER in PM0.2 relative to PM2.5. Six, seven and five sources (with characteristic species) were resolved in PM0.2, PM2.5 and PM2.5-10, respectively. Combined tailpipe and non-tailpipe traffic sources contributed 66%, 32% and 18% of PM0.2, PM2.5 and PM2.5-10 mass, respectively. Tailpipe traffic emissions (EC, OC, B) were the largest contributor to PM0.2 mass (58%). Distinct gasoline and diesel tailpipe traffic sources were resolved in PM2.5. Others included fuel oil, biomass burning, secondary inorganic aerosol, sea salt, and crustal/soil. CALINE4 dispersion model nitrogen oxides, trucks and intersections were most correlated with TRAP sources. The influence of smaller roadways and intersections became more apparent once Long Beach was excluded. Non-tailpipe emissions constituted ~8%, 11% and 18% of PM0.2, PM2.5 and PM2.5-10, respectively, with important exposure and health implications. Future efforts should consider non-linear relationships amongst predictors when modeling exposures. Implications: Vehicle emissions result in a complex mix of air pollutants with both tailpipe and non-tailpipe components. As mobile source regulations lead to decreased tailpipe emissions, the relative contribution of non-tailpipe traffic emissions to near-roadway exposures is increasing. This study documents the presence of non-tailpipe abrasive vehicular emissions (AVE) from brake and tire wear, catalyst degradation and resuspended road dust in the quasi-ultrafine (PM0.2), fine and coarse particulate matter size fractions, with contributions reaching up to 30% in PM0.2 in some southern California communities. These findings have important exposure and policy implications given the high metal content of AVE and the efficiency of PM0.2 at reaching the alveolar region of the lungs and other organ systems once inhaled. This work also highlights important considerations for building models that can accurately predict tailpipe and non-tailpipe exposures for population health studies.
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Affiliation(s)
- Rima Habre
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Mariam Girguis
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Robert Urman
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Scott Fruin
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | | | - Martin Shafer
- Wisconsin State Laboratory of Hygiene, University of Wisconsin-Madison, Madison, WI
- Environmental Chemistry & Technology Program, University of Wisconsin-Madison, Madison WI
| | - Patrick Gorski
- Wisconsin State Laboratory of Hygiene, University of Wisconsin-Madison, Madison, WI
| | - Meredith Franklin
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Rob McConnell
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Ed Avol
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
| | - Frank Gilliland
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA
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20
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Zhang Y, Chen Z, Berhane K, Urman R, Chatzi VL, Breton C, Gilliland FD. The Dynamic Relationship Between Asthma and Obesity in Schoolchildren. Am J Epidemiol 2020; 189:583-591. [PMID: 31712801 DOI: 10.1093/aje/kwz257] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 12/24/2022] Open
Abstract
Asthma and obesity are among the most prevalent chronic health conditions in children. Although there has been compelling evidence of co-occurrence of asthma and obesity, it is uncertain whether asthma contributes to the development of obesity or obesity contributes to the onset of asthma or both. In this study, we used a joint transition modeling approach with cross-lagged structure to understand how asthma and obesity influence each other dynamically over time. Subjects for this study included 5,193 kindergarten and first-grade students enrolled from 13 communities in 2002-2003 in the Southern California Children's Health Study, with up to 10 years of follow-up. We found that nonobese children with diagnosed asthma at a study visit were at 37% higher odds of becoming obese by the next annual visit compared with children without asthma (odds ratio = 1.38; 95% credible interval: 1.12, 1.71). However, the presence of obesity at the current visit was not statistically significantly associated with asthma onset in the next visit (odds ratio = 1.25; 95% credible interval: 0.94, 1.62). In conclusion, childhood asthma appears to drive an increase in the onset of obesity among schoolchildren, while the onset of obesity does not necessarily imply the future onset of asthma, at least in the short term.
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Affiliation(s)
- Yue Zhang
- Department of Internal Medicine, Division of Epidemiology, School of Medicine, University of Utah, Salt Lake City, Utah
- Department of Family and Preventive Medicine, School of Medicine, University of Utah, Salt Lake City, Utah
- Veteran Affairs Salt Lake City Health Care System, Salt Lake City, Utah
| | - Zhanghua Chen
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Kiros Berhane
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Robert Urman
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Vaia Lida Chatzi
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Carrie Breton
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Frank D Gilliland
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
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21
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Girguis MS, Li L, Lurmann F, Wu J, Breton C, Gilliland F, Stram D, Habre R. Exposure Measurement Error in Air Pollution Studies: The Impact of Shared, Multiplicative Measurement Error on Epidemiological Health Risk Estimates. AIR QUALITY, ATMOSPHERE, & HEALTH 2020; 13:631-643. [PMID: 32601528 PMCID: PMC7323995 DOI: 10.1007/s11869-020-00826-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 04/08/2020] [Indexed: 05/29/2023]
Abstract
Spatiotemporal air pollution models are increasingly being used to estimate health effects in epidemiological studies. Although such exposure prediction models typically result in improved spatial and temporal resolution of air pollution predictions, they remain subject to shared measurement error, a type of measurement error common in spatiotemporal exposure models which occurs when measurement error is not independent of exposures. A fundamental challenge of exposure measurement error in air pollution assessment is the strong correlation and sometimes identical (shared) error of exposure estimates across geographic space and time. When exposure estimates with shared measurement error are used to estimate health risk in epidemiological analyses, complex errors are potentially introduced, resulting in biased epidemiological conclusions. We demonstrate the influence of using a three-stage spatiotemporal exposure prediction model and introduce formal methods of shared, multiplicative measurement error (SMME) correction of epidemiological health risk estimates. Using our three-stage, ensemble learning based nitrogen oxides (NOx) exposure prediction model, we quantified SMME. We conducted an epidemiological analysis of wheeze risk in relation to NOx exposure among school-aged children. To demonstrate the incremental influence of exposure modeling stage, we iteratively estimated the health risk using assigned exposure predictions from each stage of the NOx model. We then determined the impact of SMME on the variance of the health risk estimates under various scenarios. Depending on the stage of the spatiotemporal exposure model used, we found that wheeze odds ratio ranged from 1.16 to 1.28 for an interquartile range increase in NOx. With each additional stage of exposure modeling, the health effect estimate moved further away from the null (OR=1). When corrected for observed SMME, the health effects confidence intervals slightly lengthened, but our epidemiological conclusions were not altered. When the variance estimate was corrected for the potential "worst case scenario" of SMME, the standard error further increased, having a meaningful influence on epidemiological conclusions. Our framework can be expanded and used to understand the implications of using exposure predictions subject to shared measurement error in future health investigations.
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Affiliation(s)
- Mariam S Girguis
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Lianfa Li
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Jun Wu
- Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California, Irvine, CA, USA
| | - Carrie Breton
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Frank Gilliland
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Daniel Stram
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Rima Habre
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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22
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Satellite-Derived PM2.5 Composition and Its Differential Effect on Children’s Lung Function. REMOTE SENSING 2020. [DOI: 10.3390/rs12061028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Studies of the association between air pollution and children’s health typically rely on fixed-site monitors to determine exposures, which have spatial and temporal limitations. Satellite observations of aerosols provide the coverage that fixed-site monitors lack, enabling more refined exposure assessments. Using aerosol optical depth (AOD) data from the Multiangle Imaging SpectroRadiometer (MISR) instrument, we predicted fine particulate matter, PM 2.5 , and PM 2.5 speciation concentrations and linked them to the residential locations of 1206 children enrolled in the Southern California Children’s Health Study. We fitted mixed-effects models to examine the relationship between the MISR-derived exposure estimates and lung function, measured as forced expiratory volume in 1 second (FEV 1 ) and forced vital capacity (FVC), adjusting for study community and biological factors. Gradient Boosting and Support Vector Machines showed excellent predictive performance for PM 2.5 (test R 2 = 0.68 ) and its chemical components (test R 2 = –0.71). In single-pollutant models, FEV 1 decreased by 131 mL (95% CI: − 232 , − 35 ) per 10.7-µg/m 3 increase in PM 2.5 , by 158 mL (95% CI: − 273 , − 43 ) per 1.2-µg/m 3 in sulfates (SO 4 2 − ), and by 177 mL (95% CI: − 306 , − 56 ) per 1.6-µg/m 3 increase in dust; FVC decreased by 175 mL (95% CI: − 310 , − 29 ) per 1.2-µg/m 3 increase in SO 4 2 − and by 212 mL (95% CI: − 391 , − 28 ) per 2.5-µg/m 3 increase in nitrates (NO 3 − ). These results demonstrate that satellite observations can strengthen epidemiological studies investigating air pollution health effects by providing spatially and temporally resolved exposure estimates.
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Dimakopoulou K, Douros J, Samoli E, Karakatsani A, Rodopoulou S, Papakosta D, Grivas G, Tsilingiridis G, Mudway I, Moussiopoulos N, Katsouyanni K. Long-term exposure to ozone and children's respiratory health: Results from the RESPOZE study. ENVIRONMENTAL RESEARCH 2020; 182:109002. [PMID: 31855698 DOI: 10.1016/j.envres.2019.109002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Although there is evidence on the effects of short-term ozone (O3) exposures on children's respiratory health, few studies have reported results on the effects of long-term exposures. We report the effects of long-term exposure to O3 on respiratory health outcomes in 10-11-year old children. METHODS We conducted a panel study in a sample of the general population of school children in two cities with high average O3 concentrations, Athens and Thessaloniki, Greece. All 186 participating students were followed up intensively for 5 weeks spreading across a school year. Data was collected through questionnaires, weekly personal O3 measurements, spirometry, FeNO and time-activity diaries. Long-term O3 exposure was assessed using fixed site measurements and modeling, calibrated for personal exposures. The associations between measured lung function parameters and lung function growth over the study period, as well as FeNO and the occurrence of symptoms with long-term O3 exposure were assessed through the application of multiple mixed effects 2-level regression models, adjusting for confounders and for short-term exposures. RESULTS A 10 μg/m3 increase in calibrated long-term O3exposure, using measurements from fixed site monitors was associated with lower FVC and FEV1 by 17 mL (95% Confidence Interval: 5-28) and 13 mL (3-21) respectively and small decreases in lung growth: 0.008% (0.002-0.014%) for FVC and 0.006% (0.000-0.012%) in FEV1 over the study period. No association was observed with PEF, FeNO or the occurrence of symptoms. A similar pattern was observed when the exposure estimates from the dispersion models were employed. CONCLUSIONS Our study provides evidence that long-term O3 exposure is associated with reduced lung volumes and growth.
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Affiliation(s)
- Konstantina Dimakopoulou
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Greece
| | - John Douros
- Laboratory of Heat Transfer and Environmental Engineering, Aristotle University of Thessaloniki, Greece
| | - Evangelia Samoli
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Greece
| | - Anna Karakatsani
- 2nd Pulmonary Department, ATTIKON University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Sophia Rodopoulou
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Greece
| | - Despina Papakosta
- Pulmonary Department, G. Papanikolaou Hospital, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Grivas
- Institute for Environmental Research and Sustainable Development, National Observatory of Athens, 15236, Athens, Greece
| | - George Tsilingiridis
- Laboratory of Heat Transfer and Environmental Engineering, Aristotle University of Thessaloniki, Greece
| | - Ian Mudway
- MRC Centre for Environment and Health, School of Population Health & Environmental Sciences, King's College London, UK
| | - Nicholas Moussiopoulos
- Laboratory of Heat Transfer and Environmental Engineering, Aristotle University of Thessaloniki, Greece
| | - Klea Katsouyanni
- Department of Hygiene, Epidemiology and Medical Statistics, Medical School, National and Kapodistrian University of Athens, Greece; MRC Centre for Environment and Health, School of Population Health & Environmental Sciences, King's College London, UK.
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24
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Horne BD, Joy EA, Hofmann MG, Gesteland PH, Cannon JB, Lefler JS, Blagev DP, Korgenski EK, Torosyan N, Hansen GI, Kartchner D, Pope CA. Short-Term Elevation of Fine Particulate Matter Air Pollution and Acute Lower Respiratory Infection. Am J Respir Crit Care Med 2019; 198:759-766. [PMID: 29652174 DOI: 10.1164/rccm.201709-1883oc] [Citation(s) in RCA: 212] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Nearly 60% of U.S. children live in counties with particulate matter less than or equal to 2.5 μm in aerodynamic diameter (PM2.5) concentrations above air quality standards. Understanding the relationship between ambient air pollution exposure and health outcomes informs actions to reduce exposure and disease risk. OBJECTIVES To evaluate the association between ambient PM2.5 levels and healthcare encounters for acute lower respiratory infection (ALRI). METHODS Using an observational case-crossover design, subjects (n = 146,397) were studied if they had an ALRI diagnosis and resided on Utah's Wasatch Front. PM2.5 air pollution concentrations were measured using community-based air quality monitors between 1999 and 2016. Odds ratios for ALRI healthcare encounters were calculated after stratification by ages 0-2, 3-17, and 18 or more years. MEASUREMENTS AND MAIN RESULTS Approximately 77% (n = 112,467) of subjects were 0-2 years of age. The odds of ALRI encounter for these young children increased within 1 week of elevated PM2.5 and peaked after 3 weeks with a cumulative 28-day odds ratio of 1.15 per +10 μg/m3 (95% confidence interval, 1.12-1.19). ALRI encounters with diagnosed and laboratory-confirmed respiratory syncytial virus and influenza increased following elevated ambient PM2.5 levels. Similar elevated odds for ALRI were also observed for older children, although the number of events and precision of estimates were much lower. CONCLUSIONS In this large sample of urban/suburban patients, short-term exposure to elevated PM2.5 air pollution was associated with greater healthcare use for ALRI in young children, older children, and adults. Further exploration is needed of causal interactions between PM2.5 and ALRI.
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Affiliation(s)
- Benjamin D Horne
- 1 Intermountain Medical Center Heart Institute, Salt Lake City, Utah.,2 Department of Biomedical Informatics
| | - Elizabeth A Joy
- 4 Department of Family and Preventive Medicine and.,3 Community Health & Food and Nutrition
| | - Michelle G Hofmann
- 6 Department of Pediatrics, University of Utah, Salt Lake City, Utah.,5 Primary Children's Hospital, Salt Lake City, Utah; and
| | - Per H Gesteland
- 2 Department of Biomedical Informatics.,6 Department of Pediatrics, University of Utah, Salt Lake City, Utah.,5 Primary Children's Hospital, Salt Lake City, Utah; and
| | | | | | - Denitza P Blagev
- 8 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine
| | | | | | - Grant I Hansen
- 10 Business Intelligence, Intermountain Healthcare, Salt Lake City, Utah
| | - David Kartchner
- 9 Population Health, and.,11 Department of Mathematics, Brigham Young University, Provo, Utah
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25
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Chen Z, Newgard CB, Kim JS, IIkayeva O, Alderete TL, Thomas DC, Berhane K, Breton C, Chatzi L, Bastain TM, McConnell R, Avol E, Lurmann F, Muehlbauer MJ, Hauser ER, Gilliland FD. Near-roadway air pollution exposure and altered fatty acid oxidation among adolescents and young adults - The interplay with obesity. ENVIRONMENT INTERNATIONAL 2019; 130:104935. [PMID: 31238265 PMCID: PMC6679991 DOI: 10.1016/j.envint.2019.104935] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/06/2019] [Accepted: 06/14/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Air pollution exposure has been shown to increase the risk of obesity and metabolic dysfunction in animal models and human studies. However, the metabolic pathways altered by air pollution exposure are unclear, especially in adolescents and young adults who are at a critical period in the development of cardio-metabolic diseases. OBJECTIVES The aim of this study was to examine the associations between air pollution exposure and indices of fatty acid and amino acid metabolism. METHODS A total of 173 young adults (18-23 years) from eight Children's Health Study (CHS) Southern California communities were examined from 2014 to 2018. Near-roadway air pollution (NRAP) exposure (freeway and non-freeway) and regional air pollution exposure (nitrogen dioxide, ozone and particulate matter) during one year before the study visit were estimated based on participants' residential addresses. Serum concentrations of 64 targeted metabolites including amino acids, acylcarnitines, non-esterified fatty acid (NEFA) and glycerol were measured in fasting serum samples. Principal component analysis of metabolites was performed to identify metabolite clusters that represent key metabolic pathways. Mixed effects models were used to analyze the associations of air pollution exposure with metabolomic principal component (PC) scores and individual metabolite concentrations adjusting for potential confounders. RESULTS Higher lagged one-year averaged non-freeway NRAP exposure was associated with higher concentrations of NEFA oxidation byproducts and higher NEFA-related PC score (all p's ≤ 0.038). The effect sizes were larger among obese individuals (interaction p = 0.047). Among females, higher freeway NRAP exposure was also associated with a higher NEFA-related PC score (p = 0.042). Among all participants, higher freeway NRAP exposure was associated with a lower PC score for lower concentrations of short- and median-chain acylcarnitines (p = 0.044). CONCLUSIONS Results of this study indicate that NRAP exposure is associated with altered fatty acid metabolism, which could contribute to the metabolic perturbation in obese youth.
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Affiliation(s)
- Zhanghua Chen
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA.
| | - Christopher B Newgard
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center Durham, NC, USA
| | - Jeniffer S Kim
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Olga IIkayeva
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center Durham, NC, USA
| | - Tanya L Alderete
- Department of Integrative Physiology, University of Colorado at Boulder, Boulder, CO, USA
| | - Duncan C Thomas
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Kiros Berhane
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Carrie Breton
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Leda Chatzi
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Theresa M Bastain
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Rob McConnell
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | - Edward Avol
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
| | | | - Michael J Muehlbauer
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center Durham, NC, USA
| | - Elizabeth R Hauser
- Duke Molecular Physiology Institute and Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center Durham, NC, USA
| | - Frank D Gilliland
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USA
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26
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Quek YW, Chuang CY, Pan HH, Sun HL, Lue KH, Ku MS. Boys With Allergic Rhinitis Who Were Sensitized to Blomia tropicalis Are the Most Vulnerable to Air Pollutants. Am J Rhinol Allergy 2019; 33:730-736. [PMID: 31362518 DOI: 10.1177/1945892419865097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Yeak-Wun Quek
- Institute of Medicine, Chung Shan Medical University, Taichung.,School of Medicine, Chung Shan Medical University, Taichung.,Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung
| | - Chun-Yi Chuang
- School of Medicine, Chung Shan Medical University, Taichung.,Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung
| | - Hui-Hsien Pan
- Institute of Medicine, Chung Shan Medical University, Taichung.,School of Medicine, Chung Shan Medical University, Taichung.,Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung
| | - Hai-Lun Sun
- Institute of Medicine, Chung Shan Medical University, Taichung.,School of Medicine, Chung Shan Medical University, Taichung.,Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung
| | - Ko-Huang Lue
- Institute of Medicine, Chung Shan Medical University, Taichung.,School of Medicine, Chung Shan Medical University, Taichung.,Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung
| | - Min-Sho Ku
- Institute of Medicine, Chung Shan Medical University, Taichung.,School of Medicine, Chung Shan Medical University, Taichung.,Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung
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27
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Effects of policy-driven hypothetical air pollutant interventions on childhood asthma incidence in southern California. Proc Natl Acad Sci U S A 2019; 116:15883-15888. [PMID: 31332016 DOI: 10.1073/pnas.1815678116] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Childhood asthma is a major public health concern and has significant adverse impacts on the lives of the children and their families, and on society. There is an emerging link between air pollution, which is ubiquitous in our environment, particularly in urban centers, and incident childhood asthma. Here, using data from 3 successive cohorts recruited from the same 9 communities in southern California over a span of 20 y (1993 to 2014), we estimated asthma incidence using G-computation under hypothetical air pollution exposure scenarios targeting nitrogen dioxide (NO2) and particulate matter <2.5 μm (PM2.5) in separate interventions. We reported comparisons of asthma incidence under each hypothetical air pollution intervention with incidence under the observed natural course of exposure; results that may be more tangible for policymakers compared with risk ratios. Model results indicated that childhood asthma incidence rates would have been statistically significantly higher had the observed reduction in ambient NO2 in southern California not occurred in the 1990s and early 2000s, and asthma incidence rates would have been significantly lower had NO2 been lower than what it was observed to be. For example, compliance with a hypothetical standard of 20 ppb NO2 was estimated to result in 20% lower childhood asthma incidence (95% CI, -27% to -11%) compared with the exposure that actually occurred. The findings for hypothetical PM2.5 interventions, although statistically significant, were smaller in magnitude compared with results for the hypothetical NO2 interventions. Our results suggest a large potential public health benefit of air pollutant reduction in reduced incidence of childhood asthma.
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28
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Garcia E, Berhane KT, Islam T, McConnell R, Urman R, Chen Z, Gilliland FD. Association of Changes in Air Quality With Incident Asthma in Children in California, 1993-2014. JAMA 2019; 321:1906-1915. [PMID: 31112259 PMCID: PMC6537847 DOI: 10.1001/jama.2019.5357] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
IMPORTANCE Exposure to air pollutants is a well-established cause of asthma exacerbation in children; whether air pollutants play a role in the development of childhood asthma, however, remains uncertain. OBJECTIVE To examine whether decreasing regional air pollutants were associated with reduced incidence of childhood asthma. DESIGN, SETTING, AND PARTICIPANTS A multilevel longitudinal cohort drawn from 3 waves of the Southern California Children's Health Study over a period of air pollution decline. Each cohort was followed up from 4th to 12th grade (8 years): 1993-2001, 1996-2004, and 2006-2014. Final follow-up for these data was June 2014. Population-based recruitment was from public elementary schools. A total of 4140 children with no history of asthma and residing in 1 of 9 Children's Health Study communities at baseline were included. EXPOSURES Annual mean community-level ozone, nitrogen dioxide, and particulate matter less than 10 μm (PM10) and less than 2.5 μm (PM2.5) in the baseline year for each of 3 cohorts. MAIN OUTCOMES AND MEASURES Prospectively identified incident asthma, collected via questionnaires during follow-up. RESULTS Among the 4140 children included in this study (mean [SD] age at baseline, 9.5 [0.6] years; 52.6% female [n = 2 179]; 58.6% white [n = 2273]; and 42.2% Hispanic [n = 1686]), 525 incident asthma cases were identified. For nitrogen dioxide, the incidence rate ratio (IRR) for asthma was 0.80 (95% CI, 0.71-0.90) for a median reduction of 4.3 parts per billion, with an absolute incidence rate decrease of 0.83 cases per 100 person-years. For PM2.5, the IRR was 0.81 (95% CI, 0.67-0.98) for a median reduction of 8.1 μg/m3, with an absolute incidence rate decrease of 1.53 cases per 100 person-years. For ozone, the IRR for asthma was 0.85 (95% CI, 0.71-1.02) for a median reduction of 8.9 parts per billion, with an absolute incidence rate decrease of 0.78 cases per 100 person-years. For PM10, the IRR was 0.93 (95% CI, 0.82-1.07) for a median reduction of 4.0 μg/m3, with an absolute incidence rate decrease of 0.46 cases per 100 person-years. CONCLUSIONS AND RELEVANCE Among children in Southern California, decreases in ambient nitrogen dioxide and PM2.5 between 1993 and 2014 were significantly associated with lower asthma incidence. There were no statistically significant associations for ozone or PM10.
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Affiliation(s)
- Erika Garcia
- Department of Preventive Medicine, University of Southern California, Los Angeles
| | - Kiros T. Berhane
- Department of Preventive Medicine, University of Southern California, Los Angeles
| | - Talat Islam
- Department of Preventive Medicine, University of Southern California, Los Angeles
| | - Rob McConnell
- Department of Preventive Medicine, University of Southern California, Los Angeles
| | - Robert Urman
- Department of Preventive Medicine, University of Southern California, Los Angeles
| | - Zhanghua Chen
- Department of Preventive Medicine, University of Southern California, Los Angeles
| | - Frank D. Gilliland
- Department of Preventive Medicine, University of Southern California, Los Angeles
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Gauderman WJ, Kim A, Conti DV, Morrison J, Thomas DC, Vora H, Lewinger JP. A Unified Model for the Analysis of Gene-Environment Interaction. Am J Epidemiol 2019; 188:760-767. [PMID: 30649161 DOI: 10.1093/aje/kwy278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 12/13/2018] [Accepted: 12/17/2018] [Indexed: 11/14/2022] Open
Abstract
Gene-environment (G × E) interaction is important for many complex traits. In a case-control study of a disease trait, logistic regression is the standard approach used to model disease as a function of a gene (G), an environmental factor (E), G × E interaction, and adjustment covariates. We propose an alternative model with G as the outcome and show how it provides a unified framework for obtaining results from all of the common G × E tests. These include the 1-degree-of-freedom (df) test of G × E interaction, the 2-df joint test of G and G × E, the case-only and empirical Bayes tests, and several 2-step tests. In the context of this unified model, we propose a novel 3-df test and demonstrate that it provides robust power across a wide range of underlying G × E interaction models. We demonstrate the 3-df test in a genome-wide scan of G × sex interaction for childhood asthma using data from the Children's Health Study (Southern California, 1993-2001). This scan identified a strong G × sex interaction at the phosphodiesterase gene 4D locus (PDE4D), a known asthma-related locus, with a strong effect in males (per-allele odds ratio = 1.70; P = 3.8 × 10-8) and virtually no effect in females. We describe a software program, G×EScan (University of Southern California, Los Angeles, California), which can be used to fit standard and unified models for genome-wide G × E studies.
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Affiliation(s)
- W James Gauderman
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Andre Kim
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - David V Conti
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - John Morrison
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Duncan C Thomas
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Hita Vora
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Juan Pablo Lewinger
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
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Hong H, McConnell R, Liu F, Urman R, Barrington-Trimis JL. The impact of local regulation on reasons for electronic cigarette use among Southern California young adults. Addict Behav 2019; 91:253-258. [PMID: 30503511 DOI: 10.1016/j.addbeh.2018.11.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Tobacco control policies have decreased tobacco use among youth and young adults. We aimed to identify whether specific local tobacco retail licensing ordinances were associated with reasons for e-cigarette use, in order to examine whether strong local policies may reduce e-cigarette initiation rates by influencing the appeal of these products. METHODS Online questionnaires were completed by Southern California Children's Health Study participants in 2015-2016 (mean age = 18.9 years). Those who had ever used an e-cigarette (N = 614) were asked about reasons for use; additional data were collected on local jurisdiction tobacco sales policy, friends' attitudes toward e-cigarette use, e-cigarette characteristics (level of nicotine, flavorings), and history of tobacco use. Multivariate logistic regression models evaluated associations of each factor with reasons for e-cigarette use, adjusting for gender, ethnicity, highest parental education, tobacco use history and with a random effect of jurisdiction. RESULTS The top reason for e-cigarette use was "They come in flavors I like" (56.6%). Using e-cigarettes to quit smoking was uncommon (12.8%). Participants in jurisdictions with weaker tobacco retail licensing ordinances were more likely to report use of e-cigarettes because they are less harmful than cigarettes (50.1% vs. 36.2%), more acceptable to non-tobacco users (38% vs. 25%), and because they can use e-cigarettes in places where smoking is prohibited (30.7% vs. 18.3%; all p < .05). CONCLUSION Targeted policy to enforce a strong regulatory environment that denormalizes e-cigarette use, conveys the adverse impact of e-cigarettes, and restricts use in public places may reduce e-cigarette use among adolescents and young adults.
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Girguis MS, Li L, Lurmann F, Wu J, Urman R, Rappaport E, Breton C, Gilliland F, Stram D, Habre R. Exposure measurement error in air pollution studies: A framework for assessing shared, multiplicative measurement error in ensemble learning estimates of nitrogen oxides. ENVIRONMENT INTERNATIONAL 2019; 125:97-106. [PMID: 30711654 PMCID: PMC6499078 DOI: 10.1016/j.envint.2018.12.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 05/22/2023]
Abstract
BACKGROUND Increasingly ensemble learning-based spatiotemporal models are being used to estimate residential air pollution exposures in epidemiological studies. While these machine learning models typically have improved performance, they suffer from exposure measurement error that is inherent in all models. Our objective is to develop a framework to formally assess shared, multiplicative measurement error (SMME) in our previously published three-stage, ensemble learning-based nitrogen oxides (NOx) model to identify its spatial and temporal patterns and predictors. METHODS By treating the ensembles as an external dosimetry system, we quantified shared and unshared, multiplicative and additive (SUMA) measurement error components in our exposure model. We used generalized additive models (GAMs) with a smooth term for location to identify geographic locations with significantly elevated SMME and explain their spatial and temporal determinants. RESULTS We found evidence of significant shared and unshared multiplicative error (p < 0.0001) in our ensemble-learning based spatiotemporal NOx model predictions. Unshared multiplicative error was 26 times larger than SMME. We observed significant geographic (p < 0.0001) and temporal variation in SMME with the majority (43%) of predictions with elevated SMME occurring in the earliest time-period (1992-2000). Densely populated urban prediction regions with complex air pollution sources generally exhibited highest odds of elevated SMME. CONCLUSIONS We developed a novel statistical framework to formally evaluate the magnitude and drivers of SMME in ensemble learning-based exposure models. Our framework can be used to inform building future improved exposure models.
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Affiliation(s)
- Mariam S Girguis
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
| | - Lianfa Li
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Jun Wu
- Department of Public Health, College of Health Sciences, University of California, Irvine, CA, USA
| | - Robert Urman
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Edward Rappaport
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Carrie Breton
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Frank Gilliland
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Daniel Stram
- Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Rima Habre
- Division of Environmental Health, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Yang M, Chu C, Bloom MS, Li S, Chen G, Heinrich J, Markevych I, Knibbs LD, Bowatte G, Dharmage SC, Komppula M, Leskinen A, Hirvonen MR, Roponen M, Jalava P, Wang SQ, Lin S, Zeng XW, Hu LW, Liu KK, Yang BY, Chen W, Guo Y, Dong GH. Is smaller worse? New insights about associations of PM 1 and respiratory health in children and adolescents. ENVIRONMENT INTERNATIONAL 2018; 120:516-524. [PMID: 30153645 DOI: 10.1016/j.envint.2018.08.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/27/2018] [Accepted: 08/09/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND AND OBJECTIVES Little is known about PM1 effects on respiratory health, relative to larger size fractions (PM2.5). To address this literature gap, we assessed associations between PM1 exposure and asthmatic symptoms in Chinese children and adolescents, compared with PM2.5. METHODS A total of 59,754 children, aged 2-17 years, were recruited from 94 kindergartens, elementary and middle schools in the Seven Northeast Cities (SNEC) study, during 2012-2013. We obtained information on asthma and asthma-related symptoms including wheeze, persistent phlegm, and persistent cough using a standardized questionnaire developed by the American Thoracic Society. PM1 and PM2.5 concentrations were estimated using a spatial statistical model matched to the children's geocoded home addresses. To examine the associations, mixed models with school/kindergarten as random intercept were used, controlling for covariates. RESULTS Odds ratios (ORs) of doctor-diagnosed asthma associated with a 10-μg/m3 increase for PM1 and PM2.5 were 1.56 (95% CI: 1.46-1.66) and 1.50 (1.41-1.59), respectively, and similar pattern were observed for other outcomes. Interaction analyses indicated that boys and the individuals with an allergic predisposition may be vulnerable subgroups. For example, among children with allergic predisposition, the ORs for doctor diagnosed asthma per 10 μg/m3 increase in PM1 was 1.71 (95% CI: 1.60-1.83), which was stronger than in their counterparts (1.46; 1.37-1.56) (pfor interaction < 0.05). CONCLUSIONS This study indicated that long-term exposure to PM1 may increase the risk of asthma and asthma-related symptoms, especially among boys and those with allergic predisposition. Furthermore, these positive associations for PM1 were very similar to those for PM2.5.
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Affiliation(s)
- Mo Yang
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Chu Chu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Michael S Bloom
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; Department of Environmental Health Sciences and Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, NY 12144, USA
| | - Shanshan Li
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3004, Australia
| | - Gongbo Chen
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3004, Australia
| | - Joachim Heinrich
- Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, Ludwig-Maximilian-University, Munich 80336, Germany; Allergy and Lung Health Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Iana Markevych
- Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, Ludwig-Maximilian-University, Munich 80336, Germany
| | - Luke D Knibbs
- School of Public Health, The University of Queensland, Herston, Queensland 4006, Australia
| | - Gayan Bowatte
- Allergy and Lung Health Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Shyamali C Dharmage
- Allergy and Lung Health Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Mika Komppula
- Finnish Meteorological Institute, Kuopio 70211, Finland
| | - Ari Leskinen
- Finnish Meteorological Institute, Kuopio 70211, Finland; Department of Applied Physics, University of Eastern Finland, Kuopio 70211, Finland
| | - Maija-Riitta Hirvonen
- Department of Environmental and Biological Science, University of Eastern Finland, Kuopio 70211, Finland
| | - Marjut Roponen
- Department of Environmental and Biological Science, University of Eastern Finland, Kuopio 70211, Finland
| | - Pasi Jalava
- Department of Environmental and Biological Science, University of Eastern Finland, Kuopio 70211, Finland
| | - Si-Quan Wang
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Shao Lin
- Department of Environmental Health Sciences and Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, NY 12144, USA
| | - Xiao-Wen Zeng
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Li-Wen Hu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
| | - Kang-Kang Liu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Bo-Yi Yang
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Wen Chen
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yuming Guo
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3004, Australia.
| | - Guang-Hui Dong
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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Gao L, Urman R, Millstein J, Siegmund KD, Dubeau L, Breton CV. Association between AXL promoter methylation and lung function growth during adolescence. Epigenetics 2018; 13:1027-1038. [PMID: 30277126 PMCID: PMC6342069 DOI: 10.1080/15592294.2018.1529517] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 08/19/2018] [Accepted: 09/22/2018] [Indexed: 12/26/2022] Open
Abstract
AXL is one of the TAM (TYRO3, AXL and MERTK) receptor tyrosine kinases and may be involved in airway inflammation. Little is known about how epigenetic changes in AXL may affect lung development during adolescence. We investigated the association between AXL DNA methylation at birth and lung function growth from 10 to 18 years of age in 923 subjects from the Children's Health Study (CHS). DNA methylation from newborn bloodspots was measured at multiple CpG loci across the regulatory regions of AXL using Pyrosequencing. Linear spline mixed-effects models were fitted to assess the association between DNA methylation and 8-year lung function growth. Findings were evaluated for replication in a separate population of 237 CHS subjects using methylation data from the Illumina HumanMethylation450 (HM450) array when possible. A 5% higher average methylation level of the AXL promoter region at birth was associated with a 48.4 ml decrease in mean FEV1 growth from 10 to 18 years of age in the primary study population (95% CI: -100.2, 3.4), and a 53.9 ml decrease in mean FEV1 growth from 11 to 15 years of age in the replication population (95% CI: -104.3, -3.5). One CpG locus in the promoter region, cg10564498, was significantly associated with decreased growth in FEV1, FVC and MMEF from 10 to 18 years of age and the negative associations were observed in a similar age range in the replication population. These findings suggest a potential association between AXL promoter methylation at birth and lower lung function growth during adolescence.
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Affiliation(s)
- Lu Gao
- Department of Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, USA
| | - Robert Urman
- Department of Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, USA
| | - Joshua Millstein
- Department of Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, USA
| | - Kimberly D. Siegmund
- Department of Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, USA
| | - Louis Dubeau
- Department of Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, USA
| | - Carrie V. Breton
- Department of Preventive Medicine, USC Keck School of Medicine, Los Angeles, CA, USA
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Gao L, Liu X, Millstein J, Siegmund KD, Dubeau L, Maguire RL, (Jim) Zhang J, Fuemmeler BF, Kollins SH, Hoyo C, Murphy SK, Breton CV. Self-reported prenatal tobacco smoke exposure, AXL gene-body methylation, and childhood asthma phenotypes. Clin Epigenetics 2018; 10:98. [PMID: 30029617 PMCID: PMC6054742 DOI: 10.1186/s13148-018-0532-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/11/2018] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Epigenetic modifications, including DNA methylation, act as one potential mechanism underlying the detrimental effects associated with prenatal tobacco smoke (PTS) exposure. Methylation in a gene called AXL was previously reported to differ in response to PTS. METHODS We investigated the association between PTS and epigenetic changes in AXL and how this was related to childhood asthma phenotypes. We tested the association between PTS and DNA methylation at multiple CpG loci of AXL at birth using Pyrosequencing in two separate study populations, the Children's Health Study (CHS, n = 799) and the Newborn Epigenetic Study (NEST, n = 592). Plasma cotinine concentration was used to validate findings with self-reported smoking status. The inter-relationships among AXL mRNA and miR-199a1 expression, PTS, and AXL methylation were examined. Lastly, we evaluated the joint effects of AXL methylation and PTS on the risk of asthma and related symptoms at age 10 years old. RESULTS PTS was associated with higher methylation level in the AXL gene body in both CHS and NEST subjects. In the pooled analysis, exposed subjects had a 0.51% higher methylation level in this region compared to unexposed subjects (95% CI 0.29, 0.74; p < 0.0001). PTS was also associated with 21.2% lower expression of miR-199a1 (95% CI - 37.9, - 0.1; p = 0.05), a microRNA known to regulate AXL expression. Furthermore, the combination of higher AXL methylation and PTS exposure at birth increased the risk of recent episodes of bronchitic symptoms in childhood. CONCLUSIONS PTS was associated with methylation level of AXL and the combination altered the risk of childhood bronchitic symptoms.
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Affiliation(s)
- Lu Gao
- Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Xiaochen Liu
- Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Joshua Millstein
- Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Kimberly D. Siegmund
- Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Louis Dubeau
- Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Rachel L. Maguire
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695 USA
| | - Junfeng (Jim) Zhang
- Nicholas School of the Environment and Duke Global Health Institute, Duke University, Durham, NC 27701 USA
| | - Bernard F. Fuemmeler
- Department of Health Behavior and Policy, Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23219 USA
| | - Scott H. Kollins
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC 27705 USA
| | - Cathrine Hoyo
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695 USA
| | - Susan K. Murphy
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC 27708 USA
| | - Carrie V. Breton
- Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
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Whyand T, Hurst JR, Beckles M, Caplin ME. Pollution and respiratory disease: can diet or supplements help? A review. Respir Res 2018; 19:79. [PMID: 29716592 PMCID: PMC5930792 DOI: 10.1186/s12931-018-0785-0] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 04/19/2018] [Indexed: 02/07/2023] Open
Abstract
Pollution is known to cause and exacerbate a number of chronic respiratory diseases. The World Health Organisation has placed air pollution as the world's largest environmental health risk factor. There has been recent publicity about the role for diet and anti-oxidants in mitigating the effects of pollution, and this review assesses the evidence for alterations in diet, including vitamin supplementation in abrogating the effects of pollution on asthma and other chronic respiratory diseases. We found evidence to suggest that carotenoids, vitamin D and vitamin E help protect against pollution damage which can trigger asthma, COPD and lung cancer initiation. Vitamin C, curcumin, choline and omega-3 fatty acids may also play a role. The Mediterranean diet appears to be of benefit in patients with airways disease and there appears to be a beneficial effect in smokers however there is no direct evidence regarding protecting against air pollution. More studies investigating the effects of nutrition on rapidly rising air pollution are urgently required. However it is very difficult to design such studies due to the confounding factors of diet, obesity, co-morbid illness, medication and environmental exposure.
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Affiliation(s)
- T Whyand
- Centre for Gastroenterology, Royal Free Hospital, London, NW3 2QG, UK
| | - J R Hurst
- UCL Respiratory, University College London, London, UK
| | - M Beckles
- Department of Medicine, Royal Free Hospital, London, UK
| | - M E Caplin
- Centre for Gastroenterology, Royal Free Hospital, London, NW3 2QG, UK.
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Nuvolone D, Petri D, Voller F. The effects of ozone on human health. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:8074-8088. [PMID: 28547375 DOI: 10.1007/s11356-017-9239-3] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 05/09/2017] [Indexed: 04/16/2023]
Abstract
Ozone is a highly reactive, oxidative gas associated with adverse health outcome, including mortality and morbidity. Data from monitoring sites worldwide show levels of ozone often exceeding EU legislation threshold and the more restrictive WHO guidelines for the protection of human health. Well-established evidence has been produced for short-term effects, especially on respiratory and cardiovascular systems, associated to ozone exposure. Less conclusive is the evidence for long-term effects, reporting suggestive associations with respiratory mortality, new-onset asthma in children and increased respiratory symptom effects in asthmatics. The growing epidemiological evidence and the increasing availability of routinely collected data on air pollutant concentrations and health statistics allow to produce robust estimates in health impact assessment routine. Most recent estimates indicate that in 2013 in EU-28, 16,000 premature deaths, equivalent to 192,000 years of life lost, are attributable to ozone exposure. Italy shows very high health impact estimates among EU countries, reporting 3380 premature deaths and 61 years of life lost (per 100,000 inhabitants) attributable to ozone exposure.
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Affiliation(s)
- Daniela Nuvolone
- Unit of Epidemiology, Regional Health Agency of Tuscany, via Pietro Dazzi 1, Florence, Italy.
| | - Davide Petri
- Unit of Epidemiology, Regional Health Agency of Tuscany, via Pietro Dazzi 1, Florence, Italy
| | - Fabio Voller
- Unit of Epidemiology, Regional Health Agency of Tuscany, via Pietro Dazzi 1, Florence, Italy
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Weaver GM, Gauderman WJ. Traffic-Related Pollutants: Exposure and Health Effects Among Hispanic Children. Am J Epidemiol 2018; 187:45-52. [PMID: 28605396 DOI: 10.1093/aje/kwx223] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 04/26/2017] [Indexed: 01/02/2023] Open
Abstract
We examined traffic-related pollution (TRP) exposure and respiratory health effects in Hispanic white (HW) children, both compared with non-Hispanic white (NHW) children and according to genetically determined Native American (NA) ancestry. The sample included over 5,000 children from the Children's Health Study in California, followed during 1993-2014. HW children were 1.47 (95% confidence interval (CI): 1.24, 1.73) times more likely to live close (<500 m) to a freeway and 1.54 (95% CI: 1.26, 1.87) times more likely to live close (<75 m) to a major nonfreeway road compared with NHW children. Among HW children, those with >50% NA ancestry were >40% more likely to live close to a freeway or to a major nonfreeway road, compared with those with ≤50% NA ancestry. The association of TRP with ever having been diagnosed by a doctor as having asthma differed between HW and NHW children (P < 0.05), with the strongest association among HW children with >50% NA ancestry. Within this subgroup, those close to a major nonfreeway road were 2.16 (95% CI: 1.26, 3.69) times more likely to have ever reported asthma compared with those living further away. This paper provides evidence that HW children in southern California, especially those with greater NA ancestry, are more exposed to TRP and are potentially at greater risk for TRP-related respiratory health effects.
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Affiliation(s)
- Garrett M Weaver
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - W James Gauderman
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
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Kaul V, Singh V, Harish R, Kaur N, Rai S, Bansal S, Raina S. Air pollution and respiratory dysfunction among adolescents: A case–control study from North West India. INDIAN JOURNAL OF ALLERGY, ASTHMA AND IMMUNOLOGY 2018. [DOI: 10.4103/ijaai.ijaai_6_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gao L, Millstein J, Siegmund KD, Dubeau L, Maguire R, Gilliland FD, Murphy SK, Hoyo C, Breton CV. Epigenetic regulation of AXL and risk of childhood asthma symptoms. Clin Epigenetics 2017; 9:121. [PMID: 29177020 PMCID: PMC5688797 DOI: 10.1186/s13148-017-0421-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 11/01/2017] [Indexed: 12/14/2022] Open
Abstract
Background AXL is one of the TAM (TYRO3, AXL and MERTK) receptor tyrosine kinases and may affect numerous immune-related health conditions. However, the role for AXL in asthma, including its epigenetic regulation, has not been extensively studied. Methods We investigated the association between AXL DNA methylation at birth and risk of childhood asthma symptoms at age 6 years. DNA methylation of multiple CpG loci across the regulatory regions of AXL was measured in newborn bloodspots using the Illumina HumanMethylation450 array on a subset of 246 children from the Children's Health Study (CHS). Logistic regression models were fitted to assess the association between asthma symptoms and DNA methylation. Findings were evaluated for replication in a separate population of 1038 CHS subjects using Pyrosequencing on newborn bloodspot samples. AXL genotypes were extracted from genome-wide data. Results Higher average methylation of CpGs in the AXL gene at birth was associated with higher risk of parent-reported wheezing, and the association was stronger in girls than in boys. This relationship reflected the methylation status of the gene-body region near the 5' end, for which a 1% higher methylation level was significantly associated with a 72% increased risk of ever having wheezed by 6 years. The association of one CpG locus, cg00360107 was replicated using Pyrosequencing. Increased AXL methylation was also associated with lower mRNA expression level of this gene in lung tissue from the Cancer Genome Atlas (TCGA) dataset. Furthermore, AXL DNA methylation was strongly linked to underlying genetic polymorphisms. Conclusions AXL DNA methylation at birth was associated with higher risk for asthma-related symptoms in early childhood.
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Affiliation(s)
- Lu Gao
- 0000 0001 2156 6853grid.42505.36Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Joshua Millstein
- 0000 0001 2156 6853grid.42505.36Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Kimberly D. Siegmund
- 0000 0001 2156 6853grid.42505.36Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Louis Dubeau
- 0000 0001 2156 6853grid.42505.36Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Rachel Maguire
- 0000 0001 2173 6074grid.40803.3fDepartment of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695 USA
| | - Frank D. Gilliland
- 0000 0001 2156 6853grid.42505.36Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
| | - Susan K. Murphy
- 0000 0004 1936 7961grid.26009.3dDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC 27710 USA
| | - Cathrine Hoyo
- 0000 0001 2173 6074grid.40803.3fDepartment of Biological Sciences, Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27695 USA
| | - Carrie V. Breton
- 0000 0001 2156 6853grid.42505.36Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto Street, Los Angeles, CA 90032 USA
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40
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Murtaugh MP, Steer CJ, Sreevatsan S, Patterson N, Kennedy S, Sriramarao P. The science behind One Health: at the interface of humans, animals, and the environment. Ann N Y Acad Sci 2017; 1395:12-32. [PMID: 28505393 DOI: 10.1111/nyas.13355] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 03/20/2017] [Indexed: 12/19/2022]
Abstract
Humans face a grand quality-of-life challenge as growing demands for resources for an ever-expanding population threaten the existence of wildlife populations, degrade land, and pollute air and water. Public investment and policy decisions that will shape future interactions of humans, animals, and the environment need scientific input to help find common ground for durable and sustainable success. The Second International Conference on One Medicine One Science brought together a broad range of scientists, trainees, regulatory authorities, and health experts from 34 countries to inform and discuss the human impacts of air quality; the complexities of water quality, access, and conflicts; the opportunities and uncertainties in precision medicine; and the role of science communication in health policy formulation. Workshops focused on the roles and development of physician-scientists and multidisciplinary teams in complex problem solving, Big Data tools for analysis and visualization, international policy development processes, and health models that benefit animals and humans. Key realizations were that local and regional health challenges at the interface of humans, animals, and the environment are variations of the same overarching conflicts and that international gatherings provide new opportunities for investigation and policy development that are broadly applicable.
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Affiliation(s)
- Michael P Murtaugh
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota
| | - Clifford J Steer
- Departments of Medicine and Genetics, Cell Biology and Development, University of Minnesota Medical School, Minneapolis, Minnesota
| | - Srinand Sreevatsan
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota
| | - Ned Patterson
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota
| | - Shaun Kennedy
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota.,The Food System Institute, LLC, St. Paul, Minnesota
| | - P Sriramarao
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota
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Franklin M, Fruin S. The role of traffic noise on the association between air pollution and children's lung function. ENVIRONMENTAL RESEARCH 2017; 157:153-159. [PMID: 28558263 PMCID: PMC5546884 DOI: 10.1016/j.envres.2017.05.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/21/2017] [Accepted: 05/22/2017] [Indexed: 05/17/2023]
Abstract
Although it has been shown that traffic-related air pollution adversely affects children's lung function, few studies have examined the influence of traffic noise on this association, despite both sharing a common source. Estimates of noise exposure (Ldn, dB), and freeway and non-freeway emission concentrations of oxides of nitrogen (NOx, ppb) were spatially assigned to children in Southern California who were tested for forced vital capacity (FVC, n=1345), forced expiratory volume in 1s, (FEV1, n=1332), and asthma. The associations between traffic-related NOx and these outcomes, with and without adjustment for noise, were examined using mixed effects models. Adjustment for noise strengthened the association between NOx and reduced lung function. A 14.5mL (95% CI -40.0, 11.0mL) decrease in FVC per interquartile range (13.6 ppb) in freeway NOx was strengthened to a 34.6mL decrease after including a non-linear function of noise (95% CI -66.3, -2.78mL). Similarly, a 6.54mL decrease in FEV1 (95% CI -28.3, 15.3mL) was strengthened to a 21.1mL decrease (95% CI -47.6, 5.51) per interquartile range in freeway NOx. Our results indicate that where possible, noise should be included in epidemiological studies of the association between traffic-related air pollution on lung function. Without taking noise into account, the detrimental effects of traffic-related pollution may be underestimated.
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Affiliation(s)
- Meredith Franklin
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA.
| | - Scott Fruin
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
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Gref A, Merid SK, Gruzieva O, Ballereau S, Becker A, Bellander T, Bergström A, Bossé Y, Bottai M, Chan-Yeung M, Fuertes E, Ierodiakonou D, Jiang R, Joly S, Jones M, Kobor MS, Korek M, Kozyrskyj AL, Kumar A, Lemonnier N, MacIntyre E, Ménard C, Nickle D, Obeidat M, Pellet J, Standl M, Sääf A, Söderhäll C, Tiesler CMT, van den Berge M, Vonk JM, Vora H, Xu CJ, Antó JM, Auffray C, Brauer M, Bousquet J, Brunekreef B, Gauderman WJ, Heinrich J, Kere J, Koppelman GH, Postma D, Carlsten C, Pershagen G, Melén E. Genome-Wide Interaction Analysis of Air Pollution Exposure and Childhood Asthma with Functional Follow-up. Am J Respir Crit Care Med 2017; 195:1373-1383. [PMID: 27901618 DOI: 10.1164/rccm.201605-1026oc] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
RATIONALE The evidence supporting an association between traffic-related air pollution exposure and incident childhood asthma is inconsistent and may depend on genetic factors. OBJECTIVES To identify gene-environment interaction effects on childhood asthma using genome-wide single-nucleotide polymorphism (SNP) data and air pollution exposure. Identified loci were further analyzed at epigenetic and transcriptomic levels. METHODS We used land use regression models to estimate individual air pollution exposure (represented by outdoor NO2 levels) at the birth address and performed a genome-wide interaction study for doctors' diagnoses of asthma up to 8 years in three European birth cohorts (n = 1,534) with look-up for interaction in two separate North American cohorts, CHS (Children's Health Study) and CAPPS/SAGE (Canadian Asthma Primary Prevention Study/Study of Asthma, Genetics and Environment) (n = 1,602 and 186 subjects, respectively). We assessed expression quantitative trait locus effects in human lung specimens and blood, as well as associations among air pollution exposure, methylation, and transcriptomic patterns. MEASUREMENTS AND MAIN RESULTS In the European cohorts, 186 SNPs had an interaction P < 1 × 10-4 and a look-up evaluation of these disclosed 8 SNPs in 4 loci, with an interaction P < 0.05 in the large CHS study, but not in CAPPS/SAGE. Three SNPs within adenylate cyclase 2 (ADCY2) showed the same direction of the interaction effect and were found to influence ADCY2 gene expression in peripheral blood (P = 4.50 × 10-4). One other SNP with P < 0.05 for interaction in CHS, rs686237, strongly influenced UDP-Gal:betaGlcNAc β-1,4-galactosyltransferase, polypeptide 5 (B4GALT5) expression in lung tissue (P = 1.18 × 10-17). Air pollution exposure was associated with differential discs, large homolog 2 (DLG2) methylation and expression. CONCLUSIONS Our results indicated that gene-environment interactions are important for asthma development and provided supportive evidence for interaction with air pollution for ADCY2, B4GALT5, and DLG2.
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Affiliation(s)
- Anna Gref
- 1 Institute of Environmental Medicine
| | | | | | - Stéphane Ballereau
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Allan Becker
- 3 Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Tom Bellander
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Anna Bergström
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Yohan Bossé
- 5 Quebec Heart and Lung Institute and.,6 Department of Molecular Medicine, Laval University, Quebec City, Quebec, Canada
| | | | | | - Elaine Fuertes
- 9 School of Population and Public Health.,8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany
| | - Despo Ierodiakonou
- 10 Section of Paediatrics, Department of Medicine, Imperial College London, London, United Kingdom.,11 Department of Epidemiology
| | - Ruiwei Jiang
- 12 Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, Department of Medical Genetics, and
| | - Stéphane Joly
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Meaghan Jones
- 12 Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, Department of Medical Genetics, and
| | - Michael S Kobor
- 12 Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, Department of Medical Genetics, and
| | | | - Anita L Kozyrskyj
- 13 Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Ashish Kumar
- 1 Institute of Environmental Medicine.,14 Department of Public Health Epidemiology, Unit of Chronic Disease Epidemiology, Swiss Tropical and Public Health Institute, University of Basel, Switzerland
| | - Nathanaël Lemonnier
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Elaina MacIntyre
- 9 School of Population and Public Health.,8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany.,15 Environmental and Occupational Health, Public Health Ontario, Toronto, Ontario, Canada
| | - Camille Ménard
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | | | - Ma'en Obeidat
- 17 Centre for Heart Lung Innovation, University of British Columbia, Vancouver, British Columbia, Canada
| | - Johann Pellet
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Marie Standl
- 8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany
| | | | - Cilla Söderhäll
- 18 Department of Biosciences and Nutrition.,19 Center for Innovative Medicine, and.,20 Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Carla M T Tiesler
- 7 Department of Medicine.,21 Division of Metabolic Diseases and Nutritional Medicine, Ludwig-Maximilians-University of Munich, Dr. von Hauner Children's Hospital, Munich, Germany
| | | | - Judith M Vonk
- 11 Department of Epidemiology.,23 Groningen Research Institute for Asthma and COPD
| | - Hita Vora
- 24 Preventive Medicine, University of Southern California, Los Angeles, California
| | - Cheng-Jian Xu
- 22 Department of Pulmonology.,23 Groningen Research Institute for Asthma and COPD.,25 Department of Genetics
| | - Josep M Antó
- 26 Centre for Research in Environmental Epidemiology, Barcelona, Spain
| | - Charles Auffray
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | | | - Jean Bousquet
- 27 CHU Montpellier, University of Montpellier, Montpellier, France
| | - Bert Brunekreef
- 28 Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands; and
| | - W James Gauderman
- 24 Preventive Medicine, University of Southern California, Los Angeles, California
| | - Joachim Heinrich
- 8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany
| | - Juha Kere
- 18 Department of Biosciences and Nutrition.,19 Center for Innovative Medicine, and
| | - Gerard H Koppelman
- 23 Groningen Research Institute for Asthma and COPD.,29 Pediatric Pulmonology and Pediatric Allerogology, Beatrix Children's Hospital, GRIAC Research Institute, and
| | - Dirkje Postma
- 22 Department of Pulmonology.,30 Department of Pulmonary Medicine and Tuberculosis, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | | | - Göran Pershagen
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Erik Melén
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden.,31 Sachs Children's Hospital, Stockholm, Sweden
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Liu S, Zhou Y, Liu S, Chen X, Zou W, Zhao D, Li X, Pu J, Huang L, Chen J, Li B, Liu S, Ran P. Association between exposure to ambient particulate matter and chronic obstructive pulmonary disease: results from a cross-sectional study in China. Thorax 2016; 72:788-795. [PMID: 27941160 PMCID: PMC5738534 DOI: 10.1136/thoraxjnl-2016-208910] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 10/14/2016] [Accepted: 10/17/2016] [Indexed: 01/13/2023]
Abstract
Objective The association between exposure to ambient particles with a median aerodynamic diameter less than 10/2.5 µm (particulate matter, PM10/2.5) and COPD remains unclear. Our study objective was to examine the association between ambient PM10/2.5 concentrations and lung functions in adults. Methods A cross-sectional study was conducted in southern China. Seven clusters were randomly selected from four cities across Guangdong province. Residents aged ≥20 years in the participating clusters were randomly recruited; all eligible participants were examined with a standardised questionnaire and spirometry. COPD was defined as a post-bronchodilator FEV1/FVC less than 70%. Atmosphere PM sampling was conducted across the clusters along with our survey. Results Of the subjects initially recruited, 84.4% (n=5993) were included for analysis. COPD prevalence and atmosphere PM concentration varied significantly among the seven clusters. COPD prevalence was significantly associated with elevated PM concentration levels: adjusted OR 2.416 (95% CI 1.417 to 4.118) for >35 and ≤75 µg/m3 and 2.530 (1.280 to 5.001) for >75 µg/m3 compared with the level of ≤35 µg/m3 for PM2.5; adjusted OR 2.442 (95% CI 1.449 to 4.117) for >50 and ≤150 µg/m3 compared with the level of ≤50 µg/m3 for PM1. A 10 µg/m3 increase in PM2.5 concentrations was associated with a 26 mL (95% CI −43 to −9) decrease in FEV1, a 28 mL (−49 to −8) decrease in FVC and a 0.09% decrease (−0.170 to −0.010) in FEV1/FVC ratio. The associations of COPD with PM10 were consistent with PM2.5 but slightly weaker. Conclusions Exposure to higher PM concentrations was strongly associated with increased COPD prevalence and declined respiratory function. Trial registration number ChiCTR-OO-14004264; Post-results.
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Affiliation(s)
- Sha Liu
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Yumin Zhou
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Suixin Liu
- Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
| | - Xinyu Chen
- Department of Pathogenic Biology, Guangzhou Medical University, Guangzhou, China
| | - Weifeng Zou
- Guangzhou Chest Hospital, Guangzhou, Guangdong, China
| | - Dongxing Zhao
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiaochen Li
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jinding Pu
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Lingmei Huang
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jinlong Chen
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Bing Li
- The Research Center of Experimental Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Shiliang Liu
- The Third Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China.,School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa ON, Canada
| | - Pixin Ran
- The State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
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Breton CV, Yao J, Millstein J, Gao L, Siegmund KD, Mack W, Whitfield-Maxwell L, Lurmann F, Hodis H, Avol E, Gilliland FD. Prenatal Air Pollution Exposures, DNA Methyl Transferase Genotypes, and Associations with Newborn LINE1 and Alu Methylation and Childhood Blood Pressure and Carotid Intima-Media Thickness in the Children's Health Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:1905-1912. [PMID: 27219456 PMCID: PMC5132634 DOI: 10.1289/ehp181] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/05/2015] [Accepted: 05/03/2016] [Indexed: 05/08/2023]
Abstract
BACKGROUND Although exposure to ambient air pollutants increases cardiovascular disease risk in adults little is known about the effects of prenatal exposure. Genetic variation and epigenetic alterations are two mechanisms that may influence the effects of early-life exposures on cardiovascular phenotypes. OBJECTIVES We investigated whether genetic and epigenetic variation modify associations between prenatal air pollution on markers of cardiovascular risk in childhood. METHODS We used linear regression analysis to investigate the associations between prenatal pollutants (PM2.5, PM10, NO2, O3), long interspersed nuclear elements (LINE1) and AluYb8 DNA methylation levels measured in newborn blood spot tests, and carotid intima-media thickness (CIMT) and blood pressure (BP) in 459 participants as part of the Children's Health Study. Interaction terms were also included to test for effect modification of these associations by genetic variation in methylation reprogramming genes. RESULTS Prenatal exposure to NO2 in the third trimester of pregnancy was associated with higher systolic BP in 11-year-old children. Prenatal exposure to multiple air pollutants in the first trimester was associated with lower DNA methylation in LINE1, whereas later exposure to O3 was associated with higher LINE1 methylation levels in newborn blood spots. The magnitude of associations with prenatal air pollution varied according to genotype for 11 SNPs within DNA methyltransferase 1 (DNMT1), DNA methyltransferase 3 Beta (DNMT3B), Tet methylcytosine dioxygenase 2 (TET2), and Thymine DNA glycosylase (TDG) genes. Although first-trimester O3 exposure was not associated with CIMT and systolic BP overall, associations within strata of DNMT1 or DNMT3B were observed, and the magnitude and the direction of these associations depended on DNMT1 genotypes. CONCLUSIONS Genetic and epigenetic variation in DNA methylation reprogramming genes and in LINE1 retrotransposons may play important roles in downstream cardiovascular consequences of prenatal air pollution exposure. Citation: Breton CV, Yao J, Millstein J, Gao L, Siegmund KD, Mack W, Whitfield-Maxwell L, Lurmann F, Hodis H, Avol E, Gilliland FD. 2016. Prenatal air pollution exposures, DNA methyl transferase genotypes, and associations with newborn LINE1 and Alu methylation and childhood blood pressure and carotid intima-media thickness in the Children's Health Study. Environ Health Perspect 124:1905-1912; http://dx.doi.org/10.1289/EHP181.
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Affiliation(s)
- Carrie V. Breton
- Department of Preventive Medicine, and
- Address correspondence to C.V. Breton, Department of Preventive Medicine, USC Keck School of Medicine, 2001 N. Soto St., Los Angeles, CA 90089 USA. Telephone: (323) 442-7383. E-mail:
| | - Jin Yao
- Department of Preventive Medicine, and
| | | | - Lu Gao
- Department of Preventive Medicine, and
| | | | - Wendy Mack
- Department of Preventive Medicine, and
- Atherosclerosis Research Unit, University of Southern California, Los Angeles, California, USA
| | - Lora Whitfield-Maxwell
- Atherosclerosis Research Unit, University of Southern California, Los Angeles, California, USA
| | - Fred Lurmann
- Sonoma Technology, Inc., Petaluma, California, USA
| | - Howard Hodis
- Department of Preventive Medicine, and
- Atherosclerosis Research Unit, University of Southern California, Los Angeles, California, USA
| | - Ed Avol
- Department of Preventive Medicine, and
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Barrington-Trimis JL, Urman R, Leventhal AM, Gauderman WJ, Cruz TB, Gilreath TD, Howland S, Unger JB, Berhane K, Samet JM, McConnell R. E-cigarettes, Cigarettes, and the Prevalence of Adolescent Tobacco Use. Pediatrics 2016; 138:peds.2015-3983. [PMID: 27401102 PMCID: PMC4960723 DOI: 10.1542/peds.2015-3983] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/09/2016] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Adolescent e-cigarette use has increased rapidly in recent years, but it is unclear whether e-cigarettes are merely substituting for cigarettes or whether e-cigarettes are being used by those who would not otherwise have smoked. To understand the role of e-cigarettes in overall tobacco product use, we examine prevalence rates from Southern California adolescents over 2 decades. METHODS The Children's Health Study is a longitudinal study of cohorts reaching 12th grade in 1995, 1998, 2001, 2004, and 2014. Cohorts were enrolled from entire classrooms in schools in selected communities and followed prospectively through completion of secondary school. Analyses used data from grades 11 and 12 of each cohort (N = 5490). RESULTS Among 12th-grade students, the combined adjusted prevalence of current cigarette or e-cigarette use in 2014 was 13.7%. This was substantially greater than the 9.0% adjusted prevalence of current cigarette use in 2004, before e-cigarettes were available (P = .003) and only slightly less than the 14.7% adjusted prevalence of smoking in 2001 (P = .54). Similar patterns were observed for prevalence rates in 11th grade, for rates of ever use, and among both male and female adolescents and both Hispanic and Non-Hispanic White adolescents. CONCLUSIONS Smoking prevalence among Southern California adolescents has declined over 2 decades, but the high prevalence of combined e-cigarette or cigarette use in 2014, compared with historical Southern California smoking prevalence, suggests that e-cigarettes are not merely substituting for cigarettes and indicates that e-cigarette use is occurring in adolescents who would not otherwise have used tobacco products.
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Affiliation(s)
| | | | | | | | | | - Tamika D. Gilreath
- Department of Preventive Medicine, and,School of Social Work, University of Southern California, Los Angeles, California
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Tam E, Miike R, Labrenz S, Sutton AJ, Elias T, Davis J, Chen YL, Tantisira K, Dockery D, Avol E. Volcanic air pollution over the Island of Hawai'i: Emissions, dispersal, and composition. Association with respiratory symptoms and lung function in Hawai'i Island school children. ENVIRONMENT INTERNATIONAL 2016; 92-93:543-52. [PMID: 27197039 PMCID: PMC4905765 DOI: 10.1016/j.envint.2016.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/18/2016] [Accepted: 03/20/2016] [Indexed: 05/09/2023]
Abstract
BACKGROUND Kilauea Volcano on the Island of Hawai'i has erupted continuously since 1983, releasing approximately 300-12000metrictons per day of sulfur dioxide (SO2). SO2 interacts with water vapor to produce an acidic haze known locally as "vog". The combination of wind speed and direction, inversion layer height, and local terrain lead to heterogeneous and variable distribution of vog over the island, allowing study of respiratory effects associated with chronic vog exposure. OBJECTIVES We characterized the distribution and composition of vog over the Island of Hawai'i, and tested the hypotheses that chronic vog exposure (SO2 and acid) is associated with increased asthma prevalence, respiratory symptoms, and reduced pulmonary function in Hawai'i Island schoolchildren. METHODS We compiled data of volcanic emissions, wind speed, and wind direction over Hawai'i Island since 1992. Community-based researchers then measured 2- to 4-week integrated concentrations of SO2 and fine particulate mass and acidity in 4 exposure zones, from 2002 to 2005, when volcanic SO2 emissions averaged 1600metrictons per day. Concurrently, community researchers recruited schoolchildren in the 4th and 5th grades of 25 schools in the 4 vog exposure zones, to assess determinants of lung health, respiratory symptoms, and asthma prevalence. RESULTS Environmental data suggested 4 different vog exposure zones with SO2, PM2.5, and particulate acid concentrations (mean±s.d.) as follows: 1) Low (0.3±0.2ppb, 2.5±1.2μg/m(3), 0.6±1.1nmolH+/m(3)), 2) Intermittent (1.6±1.8ppb, 2.8±1.5μg/m(3), 4.0±6.6nmolH+/m(3)), 3) Frequent (10.1±5.2ppb, 4.8±1.9μg/m(3), 4.3±6.7nmolH+/m(3)), and 4) Acid (1.2±0.4ppb, 7.2±2.3μg/m(3), 25.3±17.9nmolH+/m(3)). Participants (1957) in the 4 zones differed in race, prematurity, maternal smoking during pregnancy, environmental tobacco smoke exposure, presence of mold in the home, and physician-diagnosed asthma. Multivariable analysis showed an association between Acid vog exposure and cough and strongly suggested an association with FEV1/FVC <0.8, but not with diagnosis of asthma, or chronic persistent wheeze or bronchitis in the last 12months. CONCLUSIONS Hawai'i Island's volcanic air pollution can be very acidic, but contains few co-contaminants originating from anthropogenic sources of air pollution. Chronic exposure to acid vog is associated with increased cough and possibly with reduced FEV1/FVC, but not with asthma or bronchitis. Further study is needed to better understand how volcanic air pollution interacts with host and environmental factors to affect respiratory symptoms, lung function, and lung growth, and to determine acute effects of episodes of increased emissions.
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Affiliation(s)
- Elizabeth Tam
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, USA.
| | - Rei Miike
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, USA
| | - Susan Labrenz
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, USA
| | - A Jeff Sutton
- United States Geological Survey, Hawaiian Volcano Observatory, Hawai'i National Park, HI, USA
| | - Tamar Elias
- United States Geological Survey, Hawaiian Volcano Observatory, Hawai'i National Park, HI, USA
| | - James Davis
- Office of Biostatistics and Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawai'i, Honolulu, HI, USA
| | - Yi-Leng Chen
- Department of Atmospheric Sciences, School of Ocean and Earth Science Technology, University of Hawai'i, Honolulu, HI, USA
| | - Kelan Tantisira
- Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Douglas Dockery
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Edward Avol
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Barrington-Trimis JL, Berhane K, Unger JB, Cruz TB, Urman R, Chou CP, Howland S, Wang K, Pentz MA, Gilreath TD, Huh J, Leventhal AM, Samet JM, McConnell R. The E-cigarette Social Environment, E-cigarette Use, and Susceptibility to Cigarette Smoking. J Adolesc Health 2016; 59:75-80. [PMID: 27161417 PMCID: PMC4920702 DOI: 10.1016/j.jadohealth.2016.03.019] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/16/2016] [Accepted: 03/17/2016] [Indexed: 12/16/2022]
Abstract
PURPOSE One concern regarding the recent increase in adolescent e-cigarette use is the possibility that electronic (e-) cigarettes may be used by those who might not otherwise have used cigarettes, and that dual use, or transition to cigarette use alone, may follow. METHODS Questionnaire data were obtained in 2014 from 11th/12th grade students attending schools in 12 communities included in the Southern California Children's Health Study. We evaluated the cross-sectional association between e-cigarette use, the social environment (family and friends' use and approval of e-cigarettes and cigarettes), and susceptibility to future cigarette use among never cigarette smokers (N = 1,694), using previously validated measures based on reported absence of a definitive commitment not to smoke. RESULTS Among adolescents who had never used cigarettes, 31.8% of past e-cigarette users and 34.6% of current (past 30-day) e-cigarette users indicated susceptibility to cigarette use, compared with 21.0% of never e-cigarette users. The odds of indicating susceptibility to cigarette use were two times higher for current e-cigarette users compared with never users (odds ratio = 1.97; 95% confidence interval: 1.21-3.22). A social environment favorable to e-cigarettes (friends' use of and positive attitudes toward the use of e-cigarettes) was also associated with greater likelihood of susceptibility to cigarette use, independent of an individual's e-cigarette use. CONCLUSIONS E-cigarette use in adolescence, and a pro-e-cigarette social environment, may put adolescents at risk for future use of cigarettes. E-cigarettes may contribute to subsequent cigarette use via nicotine addiction or social normalization of smoking behaviors.
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Affiliation(s)
| | - Kiros Berhane
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Jennifer B Unger
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Tess Boley Cruz
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Robert Urman
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Chih Ping Chou
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Steve Howland
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Kejia Wang
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Mary Ann Pentz
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Tamika D Gilreath
- Department of Preventive Medicine, University of Southern California, Los Angeles, California; Department of Children, Youth, and Families, School of Social Work, University of Southern California, Los Angeles, California
| | - Jimi Huh
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Adam M Leventhal
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Jonathan M Samet
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
| | - Rob McConnell
- Department of Preventive Medicine, University of Southern California, Los Angeles, California
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Tilp C, Bucher H, Haas H, Duechs MJ, Wex E, Erb KJ. Effects of conventional tobacco smoke and nicotine-free cigarette smoke on airway inflammation, airway remodelling and lung function in a triple allergen model of severe asthma. Clin Exp Allergy 2016; 46:957-72. [PMID: 26502779 DOI: 10.1111/cea.12665] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 10/14/2015] [Accepted: 10/21/2015] [Indexed: 01/11/2023]
Abstract
BACKGROUND Patients with asthma who smoke have reduced lung function, increased exacerbation rates and increased steroid resistance compared to non-smoking asthmatics. In mice, cigarette smoke has been reported to have both pro- and anti-Th2 response effects. OBJECTIVE We hypothesized that combining tobacco cigarette smoke (tCS) with allergen exposure increases inflammation, airway remodelling and lung function in mice. To test this hypothesis, we combined a severe triple allergen model with tCS exposure and investigated whether effects were due to Toll-like receptor 4 signalling and/or nicotine and also observed when nicotine-free cigarettes were used. METHODS Mice were sensitized with ovalbumin, cockroach and house dust mite allergen in alum followed by intratracheal challenges with allergen twice a week for 6 weeks or additionally exposed to tCS during the allergen challenge period. Nicotine or nicotine-free herbal cigarette smoke was also applied to allergen challenged mice. RESULTS tCS significantly reduced eosinophil numbers, IL-4 and IL-5 concentrations in the lung, total and allergen-specific IgE in serum, improved lung function and reduced collagen I levels. With the exception of collagen I all parameters reduced by tobacco cigarette smoke were also reduced in Toll-like receptor 4-deficient mice. Nicotine-free cigarette smoke also had significant anti-inflammatory effects on eosinophils, IL-4 and IL-5 concentrations in the lung and reduced airway hyperreactivity, albeit weaker than tobacco smoke. Applying nicotine alone also reduced Th2 cytokine levels and eosinophil numbers in the airways. CONCLUSION Our experiments show that tCS exposure reduces allergen-induced Th2 response in the lung and associated collagen I production and development of airway hyperreactivity. With the exception on collagen I formation, these effects were not dependent on Toll-like receptor 4. The observed anti-Th2 effects of both nicotine and nicotine-free herbal cigarette smoke together suggests that tCS reduces the Th2 responses through nicotine and other products released by burning tobacco.
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Affiliation(s)
- C Tilp
- Respiratory Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach a.d. Riss, Germany
| | - H Bucher
- Respiratory Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach a.d. Riss, Germany
| | - H Haas
- Respiratory Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach a.d. Riss, Germany
| | - M J Duechs
- Respiratory Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach a.d. Riss, Germany
| | - E Wex
- Respiratory Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach a.d. Riss, Germany
| | - K J Erb
- Respiratory Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach a.d. Riss, Germany
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Kim HH, Lee CS, Yu SD, Lee JS, Chang JY, Jeon JM, Son HR, Park CJ, Shin DC, Lim YW. Near-Road Exposure and Impact of Air Pollution on Allergic Diseases in Elementary School Children: A Cross-Sectional Study. Yonsei Med J 2016; 57:698-713. [PMID: 26996571 PMCID: PMC4800361 DOI: 10.3349/ymj.2016.57.3.698] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 08/27/2015] [Accepted: 09/04/2015] [Indexed: 12/13/2022] Open
Abstract
PURPOSE The study aims to classify schools based on traffic pollutants and their complex sources, to assess the environment, to determine the state of allergic diseases among students using the International Study of Asthma and Allergies in children (ISAAC) questionnaire, and to assess their connection to air pollutants. MATERIALS AND METHODS A total of seven schools were divided into three categories according to the characteristics of their surrounding environments: three schools in traffic-related zones, two schools in complex source zones I (urban), and two schools in complex source zones II (industrial complex). ISAAC questionnaires were administered and the 4404 completed questionnaires were analyzed. RESULTS The frequency of asthma treatment during the past 12 months showed a significant increase (p<0.05) with exposure to NO₂ [1.67, 95% confidence intervals (CIs) 1.03-2.71] in the complex source zones. The frequency of allergic rhinitis treatment during the past 12 months increased significantly with exposure to Black Carbon (1.60, 95% CIs 1.36-1.90) (p<0.001), SO₂ (1.09, 95% CIs 1.01-1.17) (p<0.05), NO₂ (1.18, 95% CIs 1.07-1.30) (p<0.01) for all subjects. CONCLUSION In terms of supporting children's health, care, and prevention related to major spaces for children, such as school zones, spaces used in coming to and leaving school, playgrounds, and classrooms are essential to ensuring not only the safety of children from traffic accidents but also their protection from local traffic pollutants and various hazardous environmental factors.
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Affiliation(s)
- Ho Hyun Kim
- Department of Integrated Environmental Systems, Pyeongtaek University, Pyeongtaek, Korea
| | - Chung Soo Lee
- Research Development and Education Division, National Institute of Chemical Safety, Ministry of Environment, Daejeon, Korea
| | - Seung Do Yu
- Environmental Health Research Division, Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Korea
| | - Jung Sub Lee
- Environmental Health Research Division, Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Korea
| | - Jun Young Chang
- Environmental Health Research Division, Environmental Health Research Department, National Institute of Environmental Research, Ministry of Environment, Incheon, Korea
| | - Jun Min Jeon
- Department of Environmental Science and Engineering, Kyung Hee University College of Engineering, Suwon, Korea
| | - Hye Rim Son
- Institute for Environmental Research, Yonsei University College of Medicine, Seoul, Korea
| | - Chan Jung Park
- The Environment Technology Institute, Coway., Ltd., Seoul, Korea
| | - Dong Chun Shin
- Institute for Environmental Research, Yonsei University College of Medicine, Seoul, Korea
| | - Young Wook Lim
- Institute for Environmental Research, Yonsei University College of Medicine, Seoul, Korea.
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Berhane K, Chang CC, McConnell R, Gauderman WJ, Avol E, Rapapport E, Urman R, Lurmann F, Gilliland F. Association of Changes in Air Quality With Bronchitic Symptoms in Children in California, 1993-2012. JAMA 2016; 315:1491-501. [PMID: 27115265 PMCID: PMC5679287 DOI: 10.1001/jama.2016.3444] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Childhood bronchitic symptoms are significant public and clinical health problems that produce a substantial burden of disease. Ambient air pollutants are important determinants of bronchitis occurrence. OBJECTIVE To determine whether improvements in ambient air quality in Southern California were associated with reductions in bronchitic symptoms in children. DESIGN, SETTING, AND PARTICIPANTS A longitudinal study involving 4602 children (age range, 5-18 years) from 3 cohorts was conducted during the 1993-2001, 1996-2004, and 2003-2012 years in 8 Southern California communities. A multilevel logistic model was used to estimate the association of changes in pollution levels with bronchitic symptoms. EXPOSURES Average concentrations of nitrogen dioxide, ozone, particulate matter with an aerodynamic diameter of less than 10 µm (PM10) and less than 2.5 µm (PM2.5). MAIN OUTCOMES AND MEASURES Annual age-specific prevalence of bronchitic symptoms during the previous 12 months based on the parent's or child's report of a daily cough for 3 months in a row, congestion or phlegm other than when accompanied by a cold, or bronchitis. RESULTS The 3 cohorts included a total of 4602 children (mean age at baseline, 8.0 years; 2268 girls [49.3%]; 2081 Hispanic white [45.2%]) who had data from 2 or more annual questionnaires. Among these children, 892 (19.4%) had asthma at age 10 years. For nitrogen dioxide, the odds ratio (OR) for bronchitic symptoms among children with asthma at age 10 years was 0.79 (95% CI, 0.67-0.94) for a median reduction of 4.9 ppb, with absolute decrease in prevalence of 10.1%. For ozone, the OR was 0.66 (95% CI, 0.50-0.86) for a median reduction of 3.6 ppb, with an absolute decrease in prevalence of 16.3%. For PM10, the OR was 0.61 (95% CI, 0.48-0.78) for a median reduction of 5.8 µg/m3, with an absolute decrease in prevalence of 18.7%. For PM2.5, the OR was 0.68 (95% CI, 0.53-0.86) for a median reduction of 6.8 µg/m3, with absolute decrease in prevalence of 15.4%. Among children without asthma (n = 3710), the ORs were 0.84 (95% CI, 0.76-0.92) for nitrogen dioxide; 0.85 (95% CI, 0.74-0.97) for ozone, 0.80 (95% CI, 0.70-0.92) for PM10, and 0.79 (95% CI, 0.69-0.91) for PM2.5; with absolute decrease in prevalence of 1.8% for nitrogen dioxide, 1.7% for ozone, 2.2% for PM10, and 2.3% for PM2.5. The associations were similar or slightly stronger at age 15 years. CONCLUSIONS AND RELEVANCE Decreases in ambient pollution levels were associated with statistically significant decreases in bronchitic symptoms in children. Although the study design does not establish causality, the findings support potential benefit of air pollution reduction on asthma control.
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Affiliation(s)
- Kiros Berhane
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Chih-Chieh Chang
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Rob McConnell
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - W James Gauderman
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Edward Avol
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Ed Rapapport
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Robert Urman
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Frank Gilliland
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
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