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Chiarella SE, Garcia-Guaqueta DP, Drake LY, Dixon RE, King KS, Ryu E, Pongdee T, Park MA, Kita H, Sagheb E, Kshatriya BSA, Sohn S, Wi CI, Sadighi Akha AA, Liu H, Juhn YJ. Sex differences in sociodemographic, clinical, and laboratory variables in childhood asthma: A birth cohort study. Ann Allergy Asthma Immunol 2024; 133:403-412.e2. [PMID: 39019434 DOI: 10.1016/j.anai.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/26/2024] [Accepted: 07/05/2024] [Indexed: 07/19/2024]
Abstract
BACKGROUND There are marked sex differences in the prevalence and severity of asthma, both during childhood and adulthood. There is a relative lack of comprehensive studies exploring sexdifferences in pediatric asthma cohorts. OBJECTIVE To identify the most relevant sex differences in sociodemographic, clinical, and laboratory variables in a well-characterized large pediatric asthma cohort. METHODS We performed a cross-sectional analysis of the Mayo Clinic Olmsted County Birth Cohort. In the full birth cohort, we used a natural language-processing algorithm based on the Predetermined Asthma Criteria for asthma ascertainment. In a stratified random sample of 300 children, we obtained additional pulmonary function tests and laboratory data. We identified the significant sex differences among available sociodemographic, clinical, and laboratory variables. RESULTS Boys were more frequently diagnosed with having asthma than girls and were younger at the time of asthma diagnosis. There were no sex differences in relation to socioeconomic status. We identified a male predominance in the presence of a tympanostomy tube and a female predominance in the history of pneumonia. A higher percentage of boys had a forced expiratory volume in 1 second/forced vital capacity ratio less than 0.85. Blood eosinophilia and atopic sensitization were also more common in boys. Finally, boys had higher levels of serum periostin than girls. CONCLUSION This study described significant sex differences in a large pediatric asthma cohort. Overall, boys had earlier and more severe asthma than girls. Differences in blood eosinophilia and serum periostin provide insights into possible mechanisms of the sex bias in childhood asthma.
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Affiliation(s)
| | | | - Li Y Drake
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Rachel E Dixon
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota
| | - Katherine S King
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota
| | - Euijung Ryu
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota
| | - Thanai Pongdee
- Division of Allergic Diseases, Mayo Clinic, Rochester, Minnesota
| | - Miguel A Park
- Division of Allergic Diseases, Mayo Clinic, Rochester, Minnesota
| | - Hirohito Kita
- Division of Allergy, Asthma, and Clinical Immunology, Mayo Clinic, Scottsdale, Arizona
| | - Elham Sagheb
- Department of Artificial Intelligence and Informatics, Mayo Clinic, Rochester, Minnesota
| | | | - Sunghwan Sohn
- Department of Artificial Intelligence and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Chung-Il Wi
- Precision Population Science Laboratory, Department of Pediatrics and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota
| | - Amir A Sadighi Akha
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Hongfang Liu
- Department of Artificial Intelligence and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Young J Juhn
- Precision Population Science Laboratory, Department of Pediatrics and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota; Office of Mayo Clinic Health System Research, Mayo Clinic Health System, Rochester, Minnesota
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Charoensittisup P, Udomittipong K, Mahoran K, Palamit A. Longitudinal effects of obesity on pulmonary function in obese children and adolescents. Pediatr Res 2024:10.1038/s41390-024-03544-2. [PMID: 39244608 DOI: 10.1038/s41390-024-03544-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 08/02/2024] [Accepted: 08/21/2024] [Indexed: 09/09/2024]
Abstract
BACKGROUND To investigate the longitudinal effects of obesity on change in lung function after 1 year of follow-up in obese children and adolescents. METHODS Obese children/adolescents aged 8-15 years with pulmonary function test (PFT) results and recorded anthropometric obesity indices from 1 year earlier for comparison were recruited. Multiple linear regression of change in each lung function parameter was applied to determine the effect of sex, change in body mass index (ΔBMI), change in chest circumference (ΔCC), change in waist circumference (ΔWC), and change in waist circumference-to-height ratio (ΔWC/Ht). RESULTS Sixty-six children/adolescents (mean age: 12.5 ± 2.6 years) were recruited. Multiple linear regression analysis showed that ΔWC negatively affects the ratio of the forced expiratory volume in the first 1 s to the forced vital capacity of the lungs Δ(FEV1/FVC) (b = -0.3, p = 0.002), forced expiratory flow rate within 25-75% of vital capacity (ΔFEF25-75%) (b = -0.92, p = 0.006), and Δ(FEF25-75%/FVC) (b = -0.99, p = 0.003). When replacing ΔWC with Δ(WC/Ht) as the independent variable, Δ(WC/Ht) also negatively affects Δ(FEV1/FVC) (b = -33.71, p = 0.02), ΔFEF25-75% (b = -102.9, p = 0.03) and Δ(FEF25-75%/FVC) (b = -102.7, p = 0.03). CONCLUSION After 1 year of follow-up, change in abdominal adiposity determined by WC and WC/Ht exerted significant negative effect on lung function change specific to FEV1/FVC, FEF25-75% /FVC, and FEF25-75%. IMPACT Longitudinal effects of change in obesity on lung function in obese children and adolescents are evidenced. Change in waist circumference or waist-to-height ratio, which indicates abdominal adiposity, was inversely correlated with a change in FEV1/FVC, FEF25-75% /FVC, and FEF25-75% in children and adolescents with obesity after 1 year of follow-up. Our results suggest using waist circumference and/or waist-to-height ratio in addition to BW and/or BMI for monitoring obesity. Fat loss programs, especially those focused on reducing abdominal adiposity should be encouraged to prevent late lung function impairment.
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Affiliation(s)
- Pawinee Charoensittisup
- Division of Pulmonology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanokporn Udomittipong
- Division of Pulmonology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
| | - Khunphon Mahoran
- Division of Pulmonology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Apinya Palamit
- Division of Pulmonology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Koefoed HJL, Wang G, Gehring U, Ekstrom S, Kull I, Vermeulen R, Boer JMA, Bergstrom A, Koppelman GH, Melén E, Vonk JM, Hallberg J. Clinical implications of airway obstruction with normal or low FEV 1 in childhood and adolescence. Thorax 2024; 79:573-580. [PMID: 38514183 PMCID: PMC11137458 DOI: 10.1136/thorax-2023-220952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/30/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND Airway obstruction is defined by spirometry as a low forced expiratory volume in 1 s (FEV1) to forced vital capacity (FVC) ratio. This impaired ratio may originate from a low FEV1 (classic) or a normal FEV1 in combination with a large FVC (dysanaptic). The clinical implications of dysanaptic obstruction during childhood and adolescence in the general population remain unclear. AIMS To investigate the association between airway obstruction with a low or normal FEV1 in childhood and adolescence, and asthma, wheezing and bronchial hyperresponsiveness (BHR). METHODS In the BAMSE (Barn/Child, Allergy, Milieu, Stockholm, Epidemiology; Sweden) and PIAMA (Prevention and Incidence of Asthma and Mite Allergy; the Netherlands) birth cohorts, obstruction (FEV1:FVC ratio less than the lower limit of normal, LLN) at ages 8, 12 (PIAMA only) or 16 years was classified as classic (FEV1 RESULTS The prevalence of classic obstruction at ages 8, 12 and 16 in the two cohorts was 1.5%, 1.1% and 1.5%, respectively. Dysanaptic obstruction was slightly more prevalent: 3.9%, 2.5% and 4.6%, respectively. Obstruction, regardless of FEV1, was consistently associated with higher odds of asthma (dysanaptic obstruction: OR 2.29, 95% CI 1.40 to 3.74), wheezing, asthma medication use and BHR compared with the normal lung function group. Approximately one-third of the subjects with dysanaptic obstruction in childhood remained dysanaptic during adolescence. CLINICAL IMPLICATIONS Children and adolescents with airway obstruction had, regardless of their FEV1 level, a higher prevalence of asthma and wheezing. Follow-up and treatment at these ages should be guided by the presence of airway obstruction.
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Affiliation(s)
- Hans Jacob Lohne Koefoed
- Department of Clinical Science and Education, Sodersjukhuset, Karolinska Institute, Stockholm, Sweden
- Beatrix Children's Hospital, Department of Pediatric Pulmonology and Pediatric Allergology, University Medical Center Groningen, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | - Gang Wang
- Department of Clinical Science and Education, Sodersjukhuset, Karolinska Institute, Stockholm, Sweden
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan University West China Hospital, Chengdu, Sichuan, China
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- West China Biomedical Big Data Center, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Ulrike Gehring
- Institute for Risk Assessment Sciences, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Sandra Ekstrom
- Department of Clinical Science and Education, Sodersjukhuset, Karolinska Institute, Stockholm, Sweden
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Inger Kull
- Department of Clinical Science and Education, Sodersjukhuset, Karolinska Institute, Stockholm, Sweden
- Pediatrics, Sachs' Children's Hospital, Stockholm, Sweden
| | - Roel Vermeulen
- Institute for Risk Assessment Sciences, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jolanda M A Boer
- Center for Nutrition, Prevention, and Health Services, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Anna Bergstrom
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - Gerard H Koppelman
- Beatrix Children's Hospital, Department of Pediatric Pulmonology and Pediatric Allergology, University Medical Center Groningen, Groningen, The Netherlands
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
| | - Erik Melén
- Department of Clinical Science and Education, Sodersjukhuset, Karolinska Institute, Stockholm, Sweden
- Pediatrics, Sachs' Children's Hospital, Stockholm, Sweden
| | - Judith M Vonk
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, Groningen, The Netherlands
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jenny Hallberg
- Department of Clinical Science and Education, Sodersjukhuset, Karolinska Institute, Stockholm, Sweden
- Pediatrics, Sachs' Children's Hospital, Stockholm, Sweden
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Ahmed A, Brown A, Pollack Y, Vazhappilly J, Perry C, Thomas ER, Krishnan S, Dozor AJ. Relationship between FEV 1/FVC and age in children with asthma. Pediatr Pulmonol 2024; 59:1402-1409. [PMID: 38426807 DOI: 10.1002/ppul.26927] [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: 12/01/2023] [Revised: 02/06/2024] [Accepted: 02/12/2024] [Indexed: 03/02/2024]
Abstract
INTRODUCTION Forced expiratory volume in the first second (FEV1)/forced vital capacity (FVC) normally decreases through childhood, increases briefly during early adolescence, and then declines throughout life. The physiology behind this temporary increase during early adolescence is not well understood. The objective of this study was to determine if this pattern occurs in children with asthma. DESIGN Single-center, cross-sectional, retrospective analysis of pulmonary function tests obtained over a 5-year period in children 5-18 years of age with persistent asthma. RESULTS A total of 1793 patients satisfied all inclusion and exclusion criteria. The mean age (±SD) was 10.4 ± 3.8 years. Forty-eight percent were female. Mean FEV1/FVC was 0.83 ± 0.09. FEV1/FVC was lower at 5 years of age than in healthy children, declined from age 5 to 11 by 5.7% compared to 7.3% in healthy girls, and 5.8% compared to 9.4% in healthy boys. FEV1/FVC increased in early adolescence, but at age 16, was 5.6% lower in male children compared to healthy children, and 5.4% lower in females. The ratio was lower in obese children at all ages but demonstrated the same curvilinear shape as healthy children. In absolute terms, FEV1 grew proportionately more than FVC during early adolescence, so the ratio of FEV1/FVC increased during that period. The curvilinear shape of the curve remained in postbronchodilator testing, though significantly blunted. CONCLUSIONS FEV1/FVC is lower in children with persistent asthma than healthy children, but the "Shepherd's Hook" pattern is preserved. This was true in obese patients with asthma, although their FEV1/FVC ratios were lower throughout all stages of childhood and adolescence.
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Affiliation(s)
- Amal Ahmed
- Boston Children's Health Physicians, Valhalla, New York, USA
| | - Amy Brown
- Boston Children's Health Physicians, Valhalla, New York, USA
- Maria Fareri Children's Hospital at Westchester Medical Center, Valhalla, New York, USA
- New York Medical College, Valhalla, New York, USA
| | - Yehudit Pollack
- Boston Children's Health Physicians, Valhalla, New York, USA
- Maria Fareri Children's Hospital at Westchester Medical Center, Valhalla, New York, USA
- New York Medical College, Valhalla, New York, USA
| | | | | | | | - Sankaran Krishnan
- Boston Children's Health Physicians, Valhalla, New York, USA
- Maria Fareri Children's Hospital at Westchester Medical Center, Valhalla, New York, USA
- New York Medical College, Valhalla, New York, USA
| | - Allen J Dozor
- Boston Children's Health Physicians, Valhalla, New York, USA
- Maria Fareri Children's Hospital at Westchester Medical Center, Valhalla, New York, USA
- New York Medical College, Valhalla, New York, USA
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Bhatt SP, Nakhmani A, Fortis S, Strand MJ, Silverman EK, Sciurba FC, Bodduluri S. Reply to Neder, to Ogata et al., and to Graham. Am J Respir Crit Care Med 2024; 209:343-345. [PMID: 38033318 PMCID: PMC10840780 DOI: 10.1164/rccm.202311-2016le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 11/30/2023] [Indexed: 12/02/2023] Open
Affiliation(s)
- Surya P. Bhatt
- UAB Lung Imaging Lab
- Division of Pulmonary, Allergy, and Critical Care Medicine, and
| | - Arie Nakhmani
- UAB Lung Imaging Lab
- Department of Electrical and Computer Engineering, University of Alabama at Birmingham, Birmingham, Alabama
| | - Spyridon Fortis
- Division of Pulmonary, Critical Care, and Occupational Medicine, University of Iowa Hospital, Iowa City, Iowa
| | - Matthew J. Strand
- Division of Biostatistics and Bioinformatics, Office of Academic Affairs, National Jewish Health, Denver, Colorado
| | - Edwin K. Silverman
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts; and
| | - Frank C. Sciurba
- Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Sandeep Bodduluri
- UAB Lung Imaging Lab
- Division of Pulmonary, Allergy, and Critical Care Medicine, and
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6
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Reddy KD, Oliver BGG. Sexual dimorphism in chronic respiratory diseases. Cell Biosci 2023; 13:47. [PMID: 36882807 PMCID: PMC9993607 DOI: 10.1186/s13578-023-00998-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 02/23/2023] [Indexed: 03/09/2023] Open
Abstract
Sex differences in susceptibility, severity, and progression are prevalent for various diseases in multiple organ systems. This phenomenon is particularly apparent in respiratory diseases. Asthma demonstrates an age-dependent pattern of sexual dimorphism. However, marked differences between males and females exist in other pervasive conditions such as chronic obstructive pulmonary disease (COPD) and lung cancer. The sex hormones estrogen and testosterone are commonly considered the primary factors causing sexual dimorphism in disease. However, how they contribute to differences in disease onset between males and females remains undefined. The sex chromosomes are an under-investigated fundamental form of sexual dimorphism. Recent studies highlight key X and Y-chromosome-linked genes that regulate vital cell processes and can contribute to disease-relevant mechanisms. This review summarises patterns of sex differences in asthma, COPD and lung cancer, highlighting physiological mechanisms causing the observed dimorphism. We also describe the role of the sex hormones and present candidate genes on the sex chromosomes as potential factors contributing to sexual dimorphism in disease.
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Affiliation(s)
- Karosham Diren Reddy
- Respiratory and Cellular Molecular Biology Group, Woolcock Institute of Medical Research, Glebe, NSW, 2037, Australia.
- School of Life Science, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
| | - Brian Gregory George Oliver
- Respiratory and Cellular Molecular Biology Group, Woolcock Institute of Medical Research, Glebe, NSW, 2037, Australia
- School of Life Science, University of Technology Sydney, Ultimo, NSW, 2007, Australia
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7
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Bhatt SP, Bodduluri S, Nakhmani A, Kim YI, Reinhardt JM, Hoffman EA, Motahari A, Wilson CG, Humphries SM, Regan EA, DeMeo DL. Sex Differences in Airways at Chest CT: Results from the COPDGene Cohort. Radiology 2022; 305:699-708. [PMID: 35916677 PMCID: PMC9713451 DOI: 10.1148/radiol.212985] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 05/10/2022] [Accepted: 05/24/2022] [Indexed: 11/11/2022]
Abstract
Background The prevalence of chronic obstructive pulmonary disease (COPD) in women is fast approaching that in men, and women experience greater symptom burden. Although sex differences in emphysema have been reported, differences in airways have not been systematically characterized. Purpose To evaluate whether structural differences in airways may underlie some of the sex differences in COPD prevalence and clinical outcomes. Materials and Methods In a secondary analyses of a multicenter study of never-, current-, and former-smokers enrolled from January 2008 to June 2011 and followed up longitudinally until November 2020, airway disease on CT images was quantified using seven metrics: airway wall thickness, wall area percent, and square root of the wall thickness of a hypothetical airway with internal perimeter of 10 mm (referred to as Pi10) for airway wall; and lumen diameter, airway volume, total airway count, and airway fractal dimension for airway lumen. Least-squares mean values for each airway metric were calculated and adjusted for age, height, ethnicity, body mass index, pack-years of smoking, current smoking status, total lung capacity, display field of view, and scanner type. In ever-smokers, associations were tested between each airway metric and postbronchodilator forced expiratory volume in 1 second (FEV1)-to-forced vital capacity (FVC) ratio, modified Medical Research Council dyspnea scale, St George's Respiratory Questionnaire score, and 6-minute walk distance. Multivariable Cox proportional hazards models were created to evaluate the sex-specific association between each airway metric and mortality. Results In never-smokers (n = 420), men had thicker airway walls than women as quantified on CT images for segmental airway wall area percentage (least-squares mean, 47.68 ± 0.61 [standard error] vs 45.78 ± 0.55; difference, -1.90; P = .02), whereas airway lumen dimensions were lower in women than men after accounting for height and total lung capacity (segmental lumen diameter, 8.05 mm ± 0.14 vs 9.05 mm ± 0.16; difference, -1.00 mm; P < .001). In ever-smokers (n = 9363), men had greater segmental airway wall area percentage (least-squares mean, 52.19 ± 0.16 vs 48.89 ± 0.18; difference, -3.30; P < .001), whereas women had narrower segmental lumen diameter (7.80 mm ± 0.05 vs 8.69 mm ± 0.04; difference, -0.89; P < .001). A unit change in each of the airway metrics (higher wall or lower lumen measure) resulted in lower FEV1-to-FVC ratio, more dyspnea, poorer respiratory quality of life, lower 6-minute walk distance, and worse survival in women compared with men (all P < .01). Conclusion Airway lumen sizes quantified at chest CT were smaller in women than in men after accounting for height and lung size, and these lower baseline values in women conferred lower reserves against respiratory morbidity and mortality for equivalent changes compared with men. © RSNA, 2022 Online supplemental material is available for this article.
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Affiliation(s)
- Surya P. Bhatt
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Sandeep Bodduluri
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Arie Nakhmani
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Young-il Kim
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Joseph M. Reinhardt
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Eric A. Hoffman
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Amin Motahari
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Carla G. Wilson
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Stephen M. Humphries
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Elizabeth A. Regan
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
| | - Dawn L. DeMeo
- From the UAB Lung Imaging Lab (S.P.B., S.B., A.N.), UAB Lung Health
Center (S.P.B., S.B.), Division of Pulmonary, Allergy and Critical Care Medicine
(S.P.B., S.B.), Department of Electrical and Computer Engineering (A.N.), and
Division of Preventive Medicine (Y.I.K.), University of Alabama at Birmingham,
1720 2nd Ave S, THT 422, Birmingham, AL 35294; Roy J. Carver Department
of Biomedical Engineering (J.M.R.) and Department of Radiology (E.A.H., A.M.),
University of Iowa, Iowa City, Iowa; Departments of Biostatistics and
Bioinformatics (C.G.W.), Radiology (S.M.H.), and Medicine (E.A.R.), National
Jewish Health, Denver, Colo; and Channing Division of Network Medicine and the
Division of Pulmonary and Critical Care Medicine, Brigham and Women's
Hospital, Harvard Medical School, Boston, Mass (D.L.D.)
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8
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Robinson PD, Jayasuriya G, Haggie S, Uluer AZ, Gaffin JM, Fleming L. Issues affecting young people with asthma through the transition period to adult care. Paediatr Respir Rev 2022; 41:30-39. [PMID: 34686436 DOI: 10.1016/j.prrv.2021.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 11/15/2022]
Abstract
Asthma is among the most common medical conditions affecting children and young people, with adolescence a recognised period of increased risk, overrepresented in analyses examining recent increasing asthma mortality rates. Asthma may change significantly during this period and management also occurs in the context of patients seeking increased autonomy and self-governance whilst navigating increasing academic and social demands. A number of disease factors can destabilise asthma during adolescence including: increased rates of anaphylaxis, anxiety, depression, obesity, and, in females, an emerging resistance to corticosteroids and the pro-inflammatory effects of oestrogen. Patient factors such as smoking, vaping, poor symptom recognition, treatment non-adherence and variable engagement with health services contribute to difficult to treat asthma. Significant deficiencies in the current approach to transition have been identified by a recent EAACI task force, and subsequent asthma-specific recommendations, published in 2020 provide an important framework moving forward. As with other chronic conditions, effective transition programmes plan ahead, engage with adolescents and their families to identify the patients' management priorities and the current challenges they are experiencing with treatment. Transition needs may vary significantly across asthma patients and for more complex asthma may include dedicated transition clinics involving multidisciplinary care requiring input including, amongst others, allergy and immunology, psychological medicine, respiratory physicians and scientists and nurse specialists. Across different global regions, barriers to treatment may vary but need to be elicited and an individualised approach taken to optimising asthma care which is sustainable within the local adult healthcare system.
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Affiliation(s)
- Paul D Robinson
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, Australia; Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Australia.
| | - Geshani Jayasuriya
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, Australia; Discipline of Paediatrics and Child Health, Sydney Medical School, University of Sydney, Australia; Dept of Adolescent Medicine, The Children's Hospital at Westmead, Sydney, Australia
| | - Stuart Haggie
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Sydney, Australia; Department of Paediatrics, Shoalhaven District Memorial Hospital, Nowra, Australia
| | - Ahmet Z Uluer
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jonathan M Gaffin
- Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Louise Fleming
- National Heart and Lung Institute, Imperial College, London UK; Respiratory Paediatrics, Royal Brompton Hospital, London, UK
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9
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Huang L, Wang ST, Kuo HP, Delclaux C, Jensen ME, Wood LG, Costa D, Nowakowski D, Wronka I, Oliveira PD, Chen YC, Chen YC, Lee YL. Effects of obesity on pulmonary function considering the transition from obstructive to restrictive pattern from childhood to young adulthood. Obes Rev 2021; 22:e13327. [PMID: 34322972 DOI: 10.1111/obr.13327] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/11/2021] [Accepted: 07/11/2021] [Indexed: 12/25/2022]
Abstract
Adults with obesity exhibit a restrictive pattern, whereas children with obesity exhibit an obstructive pattern. However, the transition process remains unclear. We performed a systematic search for studies reporting on body mass index and pulmonary function in children. The main outcomes were forced expiratory volume in 1 s (FEV1 ), forced vital capacity (FVC), and their ratio (FEV1 /FVC). We compared individuals with overweight or with obesity with individuals with normal weight. Random-effects models were used to calculate pooled estimates. A total of 17 studies were included. Individuals with obesity had a lower FEV1 /FVC ratio (mean difference [MD] = -3.61%; 95% confidence interval [CI] = -4.58%, -2.64%) and a higher percent-predicted FVC (MD = 3.33%; 95% CI = 0.79%, 5.88%) than those with normal weight. Obesity impaired pulmonary function in the obstructive pattern during childhood to young adulthood, and the maximum obstruction was observed at the age of 16 years in boys and 20 years in girls. The effects attenuated at approximately 30 years and then shifted to the restrictive pattern after 35 years of age in men and 40 years in women. The effects of obesity on pulmonary function change from the obstructive pattern in childhood to the restrictive pattern in adulthood.
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Affiliation(s)
- Li Huang
- Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Sen-Te Wang
- Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Han-Pin Kuo
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Christophe Delclaux
- Department of Pediatric Physiology and Sleep Center, AP-HP, Robert Debré Hospital, Paris, France
| | - Megan E Jensen
- Priority Research Centre Grow Up Well and School of Medicine & Public Health, University of Newcastle, Newcastle, Australia
| | - Lisa G Wood
- Priority Research Centre for Healthy Lungs, School of Biomedical Science and Pharmacy, University of Newcastle, Newcastle, Australia
| | - Dirceu Costa
- Rehabilitation Sciences Postgraduate Program, University Nove de Julho, Sao Paulo, Brazil
| | - Dariusz Nowakowski
- Department of Anthropology, Wroclaw University of Environmental and Life Science, Wroclaw, Poland
| | - Iwona Wronka
- Laboratory of Anthropology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Paula D Oliveira
- Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, Brazil
| | - Yi-Chun Chen
- Department of Health Management, I-Shou University, Kaohsiung, Taiwan
| | - Yang-Ching Chen
- Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Yungling L Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.,College of Public Health, China Medical University, Taichung, Taiwan
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10
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Satia I, Adatia A, Cusack RP, Greene JM, O'Byrne PM, Killian KJ, Johnston N. Influence of age, sex and respiratory viruses on the rates of emergency department visits and hospitalisations with respiratory tract infections, asthma and COPD. ERJ Open Res 2021; 7:00053-2021. [PMID: 34046485 PMCID: PMC8141702 DOI: 10.1183/23120541.00053-2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/18/2021] [Indexed: 01/08/2023] Open
Abstract
Background The importance of age, sex and respiratory virus prevalence in emergency department (ED) visits and hospitalisations for respiratory tract infections (RTIs), asthma and COPD in a whole population over time is not well established. Methods This study retrospectively analysed data for daily ED visits and hospitalisations from 2003 to 2013 in Ontario, Canada and the daily number of virus positive tests. Daily numbers of ED visits and hospitalisations with RTIs, asthma and COPD listed as a primary diagnosis were collected from the Canadian Institute for Health Information. Virus data were obtained from the Respiratory Virus Detection Surveillance System. Multiple linear regression was used to assess the association of individual viruses with the daily rates. Results There were 4 365 578 ED visits and 321 719 (7.4%) admissions for RTIs, 817 141 ED visits and 260 665 (31.9%) admissions for COPD and 649 666 ED visits and 68 626 (10.6%) admissions for asthma. Respiratory syncytial virus and influenza A were associated with male ED visits, whereas human rhinovirus was associated with female ED visits for RTIs in preschool children. 19.2% of males, but only 7.2% of females were admitted. The correlation between the prevalence of each virus and ED visits and hospitalisations for asthma was weak, irrespective of age group and sex. Influenza A was most strongly associated with COPD ED visits and hospitalisations in males and females. Conclusions There are significant age and sex differences in the contribution of respiratory viruses to the number of ED visits and hospitalisations for RTIs, asthma and COPD. There are important age- and sex-related differences in the contribution of respiratory viruses to the number of ED visits and hospitalisations for respiratory tract infections, asthma and COPDhttps://bit.ly/39hrhIW
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Affiliation(s)
- Imran Satia
- Dept of Medicine, McMaster University, Hamilton, Canada.,Firestone Institute for Respiratory Health, St Joseph's Healthcare, Hamilton, Canada.,Division of Infection, Immunity and Respiratory Medicine, and Manchester Academic Health Science Centre, University of Manchester, Manchester, UK.,These authors contributed equally
| | - Adil Adatia
- Dept of Medicine, McMaster University, Hamilton, Canada.,Firestone Institute for Respiratory Health, St Joseph's Healthcare, Hamilton, Canada.,These authors contributed equally
| | - Ruth P Cusack
- Dept of Medicine, McMaster University, Hamilton, Canada
| | | | - Paul M O'Byrne
- Dept of Medicine, McMaster University, Hamilton, Canada.,Firestone Institute for Respiratory Health, St Joseph's Healthcare, Hamilton, Canada
| | | | - Neil Johnston
- Firestone Institute for Respiratory Health, St Joseph's Healthcare, Hamilton, Canada
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11
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Reddy KD, Oliver BGG. Sex-specific effects of in utero and adult tobacco smoke exposure. Am J Physiol Lung Cell Mol Physiol 2020; 320:L63-L72. [PMID: 33084360 DOI: 10.1152/ajplung.00273.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Tobacco smoke has harmful effects on a multiorgan level. Exposure to smoke, whether in utero or environmental, significantly increases susceptibility. This susceptibility has been identified to be divergent between males and females. However, there remains a distinct lack of thorough research into the relationship between sex and exposure to tobacco. Females tend to generate a more significant response than males during adulthood exposure. The intrauterine environment is meticulously controlled, and exposure to tobacco presents a significant factor that contributes to poor health outcomes and susceptibility later in life. Analysis of these effects in relation to the sex of the offspring is yet to be holistically reviewed and summarized. In this review, we will delineate the time-dependent relationship between tobacco smoke exposure and sex-specific disease susceptibility. We further outline possible biological mechanisms that may contribute to the identified pattern.
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Affiliation(s)
- Karosham D Reddy
- School of Life Sciences, University of Technology Sydney, Sydney, New South Wales, Australia.,Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - Brian G G Oliver
- School of Life Sciences, University of Technology Sydney, Sydney, New South Wales, Australia.,Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
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12
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Analyzing Longitudinal Data on Singing Voice Parameters of Boys and Girls Aged 8 to 12.5 and Possible Effects of a Music Pedagogical Intervention. J Voice 2020; 36:583.e1-583.e16. [PMID: 32843260 DOI: 10.1016/j.jvoice.2020.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Controlled and randomized study to analyze longitudinal voice data of boys and girls aged 8-12.5, to describe their physiological development and to evaluate the influence of a one-year music pedagogical interventional program focused on the singing voice. METHODS Singing voice profiles of 116 children (52 boys, 64 girls) aged 8-12.5 years were collected longitudinally at the beginning and the end of the third school year and the end of the fourth school year. 64 of the 116 children received a music pedagogical program during their third school year (interventional group). Maximum and minimum voice intensity, highest and lowest frequency, maximum phonation time (MPT) and Jitter were investigated. RESULTS In two years' time highest frequency increased on average by 100.23 Hz from G1 up to A1 for boys and for girls. Lowest frequency decreased by 18.36Hz from Gis-1 to G-1 (boys: Gis-1-Fis-1; girls: A-1-G-1). There was no clinically relevant development of the intensity parameters for both sexes. However, after the interventional year, minimum voice intensity significantly decreased in the interventional group compared to the control group. The MPT increased by 2.41 seconds from 10.67 seconds up to 13.09 seconds in two years. Here the increase was higher for boys (+3.2 seconds) than for girls (+1.77 seconds). Jitter was found to be 0.84%-1.11%, showing no clinically relevant changes in two years. CONCLUSION To the best of our knowledge, for the first time this study presents longitudinal data on singing voice parameters of the voice range profile of boys and girls aged 8-12.5 years. While frequency and intensity parameters develop equally for boys and girls, the MPT is found to develop more distinctly within boys. A music pedagogical intervention of a small extent has a positive effect on the ability to sing as soft as possible.
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13
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Abstract
Quantile regression is widely used to estimate conditional quantiles of an outcome variable of interest given covariates. This method can estimate one quantile at a time without imposing any constraints on the quantile process other than the linear combination of covariates and parameters specified by the regression model. While this is a flexible modeling tool, it generally yields erratic estimates of conditional quantiles and regression coefficients. Recently, parametric models for the regression coefficients have been proposed that can help balance bias and sampling variability. So far, however, only models that are linear in the parameters and covariates have been explored. This paper presents the general case of nonlinear parametric quantile models. These can be nonlinear with respect to the parameters, the covariates, or both. Some important features and asymptotic properties of the proposed estimator are described, and its finite-sample behavior is assessed in a simulation study. Nonlinear parametric quantile models are applied to estimate extreme quantiles of longitudinal measures of respiratory mechanics in asthmatic children from an epidemiological study and to evaluate a dose-response relationship in a toxicological laboratory experiment.
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Affiliation(s)
- Matteo Bottai
- Division of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Giovanna Cilluffo
- Institute for Biomedical Research and Innovation (IRIB), National Research Council (CNR), Palermo, Italy
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14
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Rocha V, Soares S, Stringhini S, Fraga S. Socioeconomic circumstances and respiratory function from childhood to early adulthood: a systematic review and meta-analysis. BMJ Open 2019; 9:e027528. [PMID: 31227536 PMCID: PMC6597002 DOI: 10.1136/bmjopen-2018-027528] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Disadvantaged socioeconomic circumstances in early life have the potential to impact lung function. Thus, this study aimed to summarise evidence on the association between socioeconomic circumstances and respiratory function from childhood to young adulthood. DESIGN Systematic review and meta-analysis. METHODS Following the Preferred Reporting Items for Systematic Review and Meta-analysis guidelines, Medline, ISI-Web of Science and Scopus were searched from inception up to January 2018. Original studies on the association between socioeconomic circumstances and respiratory function in early ages (ie, participants younger than 25 years of age) were investigated. Two investigators independently evaluated articles, applied the exclusion criteria, extracted data and assessed the risk of bias using the Newcastle-Ottawa Scale. A meta-analysis of the standardised mean difference and 95% CI in respiratory function between participants from different socioeconomic circumstances was conducted, using a random-effects model. RESULTS Thirty-three papers were included in this review and 23 showed that disadvantaged socioeconomic circumstances were significantly associated with reduced respiratory function. The meta-analysis including seven papers showed a significant difference of -0.31 (95% CI -0.42 to -0.21) litres in forced expiratory volume in the first second between children, adolescents and young adults from disadvantaged versus advantaged socioeconomic circumstances. Specifically a difference of -0.31 (95% CI -0.51 to -0.10) litres in girls and -0.43 (95% CI -0.51 to -0.35) litres in boys was observed. CONCLUSIONS Children, adolescents and young adults from disadvantaged socioeconomic circumstances had lower respiratory function, and boys presented higher respiratory health inequalities. This information contributes to explain the social patterning of respiratory diseases, and might enable health policy makers to tackle respiratory health inequalities at early ages.
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Affiliation(s)
- Vânia Rocha
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Sara Soares
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Silvia Stringhini
- Institute of Social and Preventive Medicine, University Hospital of Lausanne, Lausanne, Switzerland
- Population Epidemiology Unit, Primary Care Division, Geneva University Hospitals, Geneva, Switzerland
| | - Sílvia Fraga
- EPIUnit, Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Universidade do Porto Faculdade de Medicina, Porto, Portugal
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15
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Hu LW, Gurram N, Bloom MS, Qian Z, Howard SW, Iwelunmor J, Zeeshan M, Lin S, Yang BY, Zeng XW, Liu KK, Hu QS, Dong GH. Impact on lung function among children exposed to home new surface materials: The seven Northeastern Cities Study in China. INDOOR AIR 2019; 29:477-486. [PMID: 30710375 DOI: 10.1111/ina.12541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 01/08/2019] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
We conducted a cross-sectional study to investigate the associations between recent home renovation exposure and lung function in children. We randomly recruited 7326 school children residing in 24 districts from seven cities in northeastern China. We collected information about home renovations from parents using a questionnaire and lung function measurements from children using spirometer recordings gathered by trained professionals and expressed as the forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), maximal mid-expiratory flow (MMEF), and peak expiratory flow (PEF). We identified higher odds of diminished lung function among these with home renovation in the previous 2 years compared to those without home renovation in the previous 2 years, for FVC (odds ratios [ORs] = 1.84 [95%CI: 1.58, 2.15]; FEV1: ORs = 2.82 [95%CI: 2.36, 3.36]; PEF: ORs = 1.51 [95%CI: 1.24, 1.83]; and MMEF: ORs = 1.90 [95%CI: 1.60, 2.24]). The associations were stronger among children exposed to new polyvinyl chloride (PVC) flooring compared to children exposed to other surface materials. Our results were consistent throughout the analysis of each type of renovation materials. In conclusion, recent home renovation exposure was associated with poor lung function among children. Strategies to protect home owners and their families from respiratory hazards during and after renovation are required.
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Affiliation(s)
- Li-Wen Hu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Namratha Gurram
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
- Departments of Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, New York
| | - Michael S Bloom
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
- Departments of Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, New York
- Departments of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, New York
| | - Zhengmin Qian
- Department of Epidemiology and Biostatistics, College for Public Health & Social Justice, Saint Louis University, Saint Louis, Missouri
| | - Steven W Howard
- Department of Health Management & Policy, College for Public Health & Social Justice, Saint Louis University, Saint Louis, Missouri
| | - Juilet Iwelunmor
- Department of Behavioral Science and Health Education, College for Public Health & Social Justice, Saint Louis University, Saint Louis, Missouri
| | - Mohammed Zeeshan
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shao Lin
- Departments of Epidemiology and Biostatistics, University at Albany, State University of New York, Rensselaer, New York
- Departments of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, New York
| | - Bo-Yi Yang
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiao-Wen Zeng
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Kang-Kang Liu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Qian-Sheng Hu
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Guang-Hui Dong
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
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16
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Abstract
This commentary highlights 23 noteworthy publications from 2018, selected by leading scientists in pediatric exercise science. These publications have been deemed as significant or exciting in the field as they (a) reveal a new mechanism, (b) highlight a new measurement tool, (c) discuss a new concept or interpretation/application of an existing concept, or (d) describe a new therapeutic approach or clinical tool in youth. In some cases, findings in adults are highlighted, as they may have important implications in youth. The selected publications span the field of pediatric exercise science, specifically focusing on: aerobic exercise and training; neuromuscular physiology, exercise, and training; endocrinology and exercise; resistance training; physical activity and bone strength; growth, maturation, and exercise; physical activity and cognition; childhood obesity, physical activity, and exercise; pulmonary physiology or diseases, exercise, and training; immunology and exercise; cardiovascular physiology and disease; and physical activity, inactivity, and health.
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17
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Abstract
Men Are from Mars, Women Are from Venus. John Gray used this provocative title for his book to describe the fundamental psychological differences between the sexes. Many other controlled studies and brain scans demonstrate that men and women are physically and mentally different. The purpose of this physiology masterclass is to illustrate how sex-related differences are present in respiratory function and their possible clinical implications. An overview of sex-related differences in respiratory function and their possible clinical implicationshttp://ow.ly/106m30jqOSW
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Affiliation(s)
- Antonella LoMauro
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
| | - Andrea Aliverti
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
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18
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Pianosi PT. Flow limitation and dysanapsis in children and adolescents with exertional dyspnea. Respir Physiol Neurobiol 2018; 252-253:58-63. [PMID: 29588200 DOI: 10.1016/j.resp.2018.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 03/05/2018] [Accepted: 03/24/2018] [Indexed: 10/17/2022]
Abstract
The consequence of dysanapsis, quantitated by dysanapsis ratio (DR), on expiratory flow limitation (EFL) during exercise in pediatric subjects was examined. EFL occurred in 80 (56%) subjects from an enriched sample of children and adolescents tested during investigation of exertional dyspnea. DR was lower in subjects with vs without EFL during exercise: (0.055 ± 0.015 vs 0.067 ± 0.017, p < 0.001), and lower ratio correlated with greater extent of EFL (r = -0.64, p < 0.001). EFL was seen more often in boys: 67% vs 46% (p = 0.01), as girls had higher DR (0.063 ± 0.016 vs 0.056 ± 0.018, p = 0.007). Lower FEV1 (95 ± 17 vs 102 ± 15%predicted, p < 0.005) and FEF50 (3.47 ± 1.28 vs 4.08 ± 1.20 L s-1, p = 0.002) distinguished those with vs without EFL. Inspiratory capacity rose (IC) steadily, as work increased among those with EFL, whereas it fell to back resting levels after an initial rise in subjects without EFL. Low DR predicts EFL in pediatric subjects. Adjusting operating lung volume during exercise can mitigate EFL but this strategy may contribute to exertional dyspnea.
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Affiliation(s)
- Paolo T Pianosi
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, 55905, USA.
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19
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Sex differences in cough reflex. Respir Physiol Neurobiol 2017; 245:122-129. [DOI: 10.1016/j.resp.2016.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/07/2016] [Accepted: 12/08/2016] [Indexed: 12/31/2022]
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20
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Different cutoff values of methacholine bronchial provocation test depending on age in children with asthma. World J Pediatr 2017; 13:439-445. [PMID: 28276002 DOI: 10.1007/s12519-017-0026-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 03/30/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Bronchial hyperresponsiveness (BHR) is a fundamental pathophysiological characteristic of asthma. Although several factors such as airway caliber can affect BHR, no study has established age-dependent cutoff values of BHR to methacholine for the diagnosis of asthma in children. We investigated the cutoff values of the methacholine challenge test (MCT) in the diagnosis of asthma according to age. METHODS A total of 2383 individuals aged from 6 to 15 years old were included in this study. MCTs using the five-breath technique were performed in 350 children with suspected asthma based on symptoms by pediatric allergists and in 2033 healthy children from a general population-based cohort. We determined the provocative concentration of methacholine producing a 20% decrease in forced expiratory volume in 1 second from baseline (PC20). A modified Korean version of the International Study of Asthma and Allergies in Childhood questionnaire was used to distinguish asthmatics and healthy subjects. Receiver-operator characteristic curve analysis was used to assess the cutoff value of PC20 for the diagnosis of asthma. RESULTS Cutoff values of methacholine PC20, which provided the best combination of diagnostic sensitivity and specificity, showed an increasing pattern with age: 5.8, 9.1, 11.8, 12.6, 14.9, 21.7, 23.3, 21.1, 21.1, and 24.6 mg/mL at ages 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 years, respectively. CONCLUSION The application of different cutoff values of methacholine PC20 depending on age might be a practical modification for the diagnosis of asthma in children and adolescents with asthmatic symptoms.
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Murri V, Antoniazzi F, Piazza M, Cavarzere P, Banzato C, Boner A, Gaudino R. Lung Function in Women with Idiopathic Central Precocious Puberty: A Pilot Study
. Horm Res Paediatr 2017; 87:95-102. [PMID: 28114141 DOI: 10.1159/000454729] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 11/21/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Studies have reported that women with early menarche (≤10 years) have lower lung function. AIM To investigate lung function in women with a history of idio pathic central precocious puberty (ICPP) treated during childhood with gonadotropin-releasing hormone agonist (GnRHa). METHODS ICPP women (n = 23) were compared with healthy age-matched controls (n = 23). Subjects were clinically evaluated by means of a questionnaire, baseline and post-β<Sub>2</Sub> agonist spirometry, impulse oscillometry (a measure of airway resistance), and measurement of fractional exhaled nitric oxide (FeNO). RESULTS Patients had lower lung function values than controls: forced expiratory volume in 1 s (FEV<Sub>1</Sub>) (median 97.90 vs. 109.45; p = 0.011), FEV<Sub>1</Sub> after β<Sub>2</Sub> agonist (100.80 vs. 114.10; p = 0.013), peak expiratory flow (92.90 vs. 97.95; p = 0.031), and maximum mid-expiratory flow (MMEF) (80.80 vs. 106.30; p = 0.008). FeNO was significantly lower in the patients (p < 0.001). Significant reversibility of FEV<Sub>1</Sub> after β<Sub>2</Sub> agonist was observed in 8.7% of the patients. FEV<Sub>1</Sub>/forced vital capacity and MMEF after β<Sub>2</Sub> agonist correlated negatively with hysterometry at diagnosis (p = 0.009 and p = 0.03, respectively). There was a negative correlation between age at diagnosis and airway resistance. CONCLUSIONS Women with ICPP seem to have lower lung function despite treatment with GnRHa. Further research on the effects of sex hormones on the airways should take into account potential interplay with factors affecting the start of puberty.
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Edwards MR, Saglani S, Schwarze J, Skevaki C, Smith JA, Ainsworth B, Almond M, Andreakos E, Belvisi MG, Chung KF, Cookson W, Cullinan P, Hawrylowicz C, Lommatzsch M, Jackson D, Lutter R, Marsland B, Moffatt M, Thomas M, Virchow JC, Xanthou G, Edwards J, Walker S, Johnston SL. Addressing unmet needs in understanding asthma mechanisms: From the European Asthma Research and Innovation Partnership (EARIP) Work Package (WP)2 collaborators. Eur Respir J 2017; 49:49/5/1602448. [PMID: 28461300 DOI: 10.1183/13993003.02448-2016] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/13/2017] [Indexed: 12/27/2022]
Abstract
Asthma is a heterogeneous, complex disease with clinical phenotypes that incorporate persistent symptoms and acute exacerbations. It affects many millions of Europeans throughout their education and working lives and puts a heavy cost on European productivity. There is a wide spectrum of disease severity and control. Therapeutic advances have been slow despite greater understanding of basic mechanisms and the lack of satisfactory preventative and disease modifying management for asthma constitutes a significant unmet clinical need. Preventing, treating and ultimately curing asthma requires co-ordinated research and innovation across Europe. The European Asthma Research and Innovation Partnership (EARIP) is an FP7-funded programme which has taken a co-ordinated and integrated approach to analysing the future of asthma research and development. This report aims to identify the mechanistic areas in which investment is required to bring about significant improvements in asthma outcomes.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Rene Lutter
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Benjamin Marsland
- University of Lausanne, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | | | | | | | - Georgina Xanthou
- Biomedical Research Foundation, Academy of Athens, Athens, Greece
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Tse SM, Rifas-Shiman SL, Coull BA, Litonjua AA, Oken E, Gold DR. Sex-specific risk factors for childhood wheeze and longitudinal phenotypes of wheeze. J Allergy Clin Immunol 2016; 138:1561-1568.e6. [PMID: 27246527 PMCID: PMC5083247 DOI: 10.1016/j.jaci.2016.04.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 04/05/2016] [Accepted: 04/13/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND Although sexual dimorphism in wheeze and asthma prevalence are well documented, sex-specific risk factors for wheeze and longitudinal wheeze phenotypes have not been well elucidated. OBJECTIVE By using a large prebirth cohort, this study aimed to identify sex-specific risk factors for wheeze from birth through midchildhood and identify distinct longitudinal wheeze phenotypes and the sex-specific risk factors associated with these phenotypes. METHODS Mothers reported child wheeze symptoms over the past year approximately yearly on 9 occasions starting at age 1 year. We identified sex-specific predictors of wheeze, wheeze phenotypes, and sex-specific predictors of these phenotypes by using generalized estimating equations, latent class mixed models, and multinomial logistic analysis, respectively. RESULTS A total of 1623 children had information on wheeze at 1 or more time points. Paternal asthma was a stronger predictor of ever wheezing in boys (odds ratio [OR], 2.15; 95% CI, 1.74-2.66) than in girls (OR, 1.53; 95% CI, 1.19-1.96; P for sex by paternal asthma interaction = .03), whereas being black or Hispanic, birth weight for gestational age z score, and breast-feeding duration had stronger associations among girls. We identified 3 longitudinal wheeze phenotypes: never/infrequent wheeze (74.1%), early transient wheeze (12.7%), and persistent wheeze (13.1%). Compared with never/infrequent wheeze, maternal asthma, infant bronchiolitis, and atopic dermatitis were associated with persistent wheeze in both sexes, but paternal asthma was associated with persistent wheeze in boys only (OR, 4.27; 95% CI, 2.33-7.83; P for sex by paternal asthma interaction = .02), whereas being black or Hispanic was a predictor for girls only. CONCLUSION We identified sex-specific predictors of wheeze and longitudinal wheeze patterns, which might have important prognostic value and allow for a more personalized approach to wheeze and asthma treatment.
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Affiliation(s)
- Sze Man Tse
- Division of Respiratory Medicine, Department of Pediatrics, Sainte-Justine University Hospital Center and University of Montreal, Montreal, Quebec, Canada.
| | - Sheryl L Rifas-Shiman
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Mass
| | - Brent A Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, Mass
| | - Augusto A Litonjua
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Mass
| | - Diane R Gold
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Mass
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Abstract
Structural and functional complexities of the mammalian lung evolved to meet a unique set of challenges, namely, the provision of efficient delivery of inspired air to all lung units within a confined thoracic space, to build a large gas exchange surface associated with minimal barrier thickness and a microvascular network to accommodate the entire right ventricular cardiac output while withstanding cyclic mechanical stresses that increase several folds from rest to exercise. Intricate regulatory mechanisms at every level ensure that the dynamic capacities of ventilation, perfusion, diffusion, and chemical binding to hemoglobin are commensurate with usual metabolic demands and periodic extreme needs for activity and survival. This article reviews the structural design of mammalian and human lung, its functional challenges, limitations, and potential for adaptation. We discuss (i) the evolutionary origin of alveolar lungs and its advantages and compromises, (ii) structural determinants of alveolar gas exchange, including architecture of conducting bronchovascular trees that converge in gas exchange units, (iii) the challenges of matching ventilation, perfusion, and diffusion and tissue-erythrocyte and thoracopulmonary interactions. The notion of erythrocytes as an integral component of the gas exchanger is emphasized. We further discuss the signals, sources, and limits of structural plasticity of the lung in alveolar hypoxia and following a loss of lung units, and the promise and caveats of interventions aimed at augmenting endogenous adaptive responses. Our objective is to understand how individual components are matched at multiple levels to optimize organ function in the face of physiological demands or pathological constraints.
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Affiliation(s)
- Connie C.W. Hsia
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Dallas M. Hyde
- California National Primate Research Center, University of California at Davis, Davis, California, USA
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Demoulin-Alexikova S, Plevkova J, Mazurova L, Zatko T, Alexik M, Hanacek J, Tatar M. Impact of Air Pollution on Age and Gender Related Increase in Cough Reflex Sensitivity of Healthy Children in Slovakia. Front Physiol 2016; 7:54. [PMID: 26941651 PMCID: PMC4763033 DOI: 10.3389/fphys.2016.00054] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 02/04/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Numerous studies show higher cough reflex sensitivity (CRS) and cough outcomes in children compared to adults and in females compared to males. Despite close link that exists between cough and environment the potential influence of environmental air pollution on age- and gender -related differences in cough has not been studied yet. PURPOSE The purpose of our study was to analyse whether the effects of exposure to environmental tobacco smoke (ETS) from parental smoking and PM10 from living in urban area are implied in age- and gender-related differences in cough outcomes of healthy, non-asthmatic children. Assessment of CRS using capsaicin and incidence of dry and wet cough was performed in 290 children (mean age 13.3 ± 2.6 years (138 females/152 males). RESULTS CRS was significantly higher in girls exposed to ETS [22.3 μmol/l (9.8-50.2 μmol/l)] compared to not exposed girls [79.9 μmol/l (56.4-112.2 μmol/l), p = 0.02] as well as compared to exposed boys [121.4 μmol/l (58.2-253.1 μmol/l), p = 0.01]. Incidence of dry cough lasting more than 3 weeks was significantly higher in exposed compared to not exposed girls. CRS was significantly higher in school-aged girls living in urban area [22.0 μmol/l (10.6-45.6 μmol/l)] compared to school-aged girls living in rural area [215.9 μmol/l (87.3-533.4 μmol/l); p = 0.003], as well as compared to teenage girls living in urban area [108.8 μmol/l (68.7-172.9 μmol/l); p = 0.007]. No CRS differences were found between urban and rural boys when controlled for age group. No CRS differences were found between school-aged and teenage boys when controlled for living area. CONCLUSIONS Our results have shown that the effect of ETS on CRS was gender specific, linked to female gender and the effect of PM10 on CRS was both gender and age specific, related to female gender and school-age. We suggest that age and gender related differences in incidence of cough and CRS might be, at least partially, ascribed to the effect of environmental pollutants. The role of age and gender in the effect of air pollution on cough strongly suggest some interplay of development with biological and behavioral factors.
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Affiliation(s)
- Silvia Demoulin-Alexikova
- Department of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in BratislavaBratislava, Slovakia; Service d'Explorations Fonctionnelles Pédiatriques, Hôpital d'Enfants, Centre Hospitalier Universitaire de NancyVandœuvre-lès-Nancy, France; EA 3450 DevAH - Laboratoire de Physiologie, Faculté de Médecine, Université de LorraineVandœuvre-lès-Nancy, France
| | - Jana Plevkova
- Department of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava Bratislava, Slovakia
| | - Lenka Mazurova
- Department of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava Bratislava, Slovakia
| | - Tomas Zatko
- Department of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava Bratislava, Slovakia
| | - Mikulas Alexik
- Department of Ophthalmology, Faculty Hospital of Žilina Žilina, Slovakia
| | - Jan Hanacek
- Department of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava Bratislava, Slovakia
| | - Milos Tatar
- Department of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava Bratislava, Slovakia
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Zarazúa A, González-Arenas A, Ramírez-Vélez G, Bazán-Perkins B, Guerra-Araiza C, Campos-Lara MG. Sexual Dimorphism in the Regulation of Estrogen, Progesterone, and Androgen Receptors by Sex Steroids in the Rat Airway Smooth Muscle Cells. Int J Endocrinol 2016; 2016:8423192. [PMID: 27110242 PMCID: PMC4823480 DOI: 10.1155/2016/8423192] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 02/24/2016] [Accepted: 02/24/2016] [Indexed: 01/16/2023] Open
Abstract
The role of sex hormones in lung is known. The three main sex steroid receptors, estrogen, progesterone, and androgen, have not been sufficiently studied in airway smooth muscle cells (ASMC), and the sex hormone regulation on these receptors is unknown. We examined the presence and regulation of sex hormone receptors in female and male rat ASMC by Western blotting and flow cytometry. Gonadectomized rats were treated with 17β-estradiol, progesterone, 17β-estradiol + progesterone, or testosterone. ASMC were enzymatically isolated from tracheas and bronchi. The experiments were performed with double staining flow cytometry (anti-α-actin smooth muscle and antibodies to each hormone receptor). ERα, ERβ, tPR, and AR were detected in females or males. ERα was upregulated by E2 and T and downregulated by P4 in females; in males, ERα was downregulated by P4, E + P, and T. ERβ was downregulated by each treatment in females, and only by E + P and T in males. tPR was downregulated by P4, E + P, and T in females. No hormonal regulation was observed in male receptors. AR was downregulated in males treated with E + P and T. We have shown the occurrence of sex hormone receptors in ASMC and their regulation by the sex hormones in female and male rats.
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Affiliation(s)
- Abraham Zarazúa
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, 06725 Ciudad de México, Mexico
| | - Aliesha González-Arenas
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Ciudad de México, Mexico
| | - Gabriela Ramírez-Vélez
- Facultad de Ciencias Químicas de la Universidad La Salle, 06140 Ciudad de México, Mexico
| | - Blanca Bazán-Perkins
- Departamento de Hiperreactividad Bronquial, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, 14080 Ciudad de México, Mexico
| | - Christian Guerra-Araiza
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, 06725 Ciudad de México, Mexico
| | - María G. Campos-Lara
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, 06725 Ciudad de México, Mexico
- Hospital Infantil de México Federico Gómez, 06720 Ciudad de México, Mexico
- *María G. Campos-Lara:
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Sathish V, Prakash Y. Sex Differences in Pulmonary Anatomy and Physiology. SEX DIFFERENCES IN PHYSIOLOGY 2016:89-103. [DOI: 10.1016/b978-0-12-802388-4.00006-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Abstract
Gender differences in asthma incidence, prevalence and severity have been reported worldwide. After puberty, asthma becomes more prevalent and severe in women, and is highest in women with early menarche or with multiple gestations, suggesting a role for sex hormones in asthma genesis. However, the impact of sex hormones on the pathophysiology of asthma is confounded by and difficult to differentiate from age, obesity, atopy, and other gender associated environmental exposures. There are also gender discrepancies in the perception of asthma symptoms. Understanding gender differences in asthma is important to provide effective education and personalized management plans for asthmatics across the lifecourse.
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Tse SM, Coull BA, Sordillo JE, Datta S, Gold DR. Gender- and age-specific risk factors for wheeze from birth through adolescence. Pediatr Pulmonol 2015; 50:955-62. [PMID: 25348842 PMCID: PMC4800823 DOI: 10.1002/ppul.23113] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 07/29/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND OBJECTIVE Cross-sectional gender differences in wheeze are well documented, but few studies have examined the gender-specific risk factors for wheeze longitudinally. This study aims to identify gender- and age-specific risk factors for wheeze from birth through adolescence. METHODS The incidence of wheeze was ascertained every 6 months through age 14 years in a birth cohort consisting of 499 children with a parental history of atopy. Gender- and age-specific risk factors were identified through generalized estimating equations. RESULTS A total of 454 (91.0%) and 351 (70.3%) children were followed past age 7 and 13 years, respectively. Maternal asthma was a risk factor for wheeze in girls (OR = 2.05, 95% CI 1.44-2.91, P < 0.0001) and boys (OR = 1.79, 1.29-2.48, P = 0.0004) and had a similar effect on wheeze throughout the ages. Paternal asthma (OR = 1.83, 1.38-2.57, P = 0.0005) and infant bronchiolitis (OR = 2.15, 1.47-3.14, P < 0.0001) were risk factors for boys only, with similar effects throughout the ages. CONCLUSION Using a prospective cohort, we identified gender- and age-specific risk factors for wheeze. The identification of gender-specific early life risk factors may allow for timely interventions and a more personalized approach to the treatment of asthma.
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Affiliation(s)
- Sze Man Tse
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.,Department of Pediatrics, Sainte-Justine University Hospital Center, Montreal, Quebec, Canada
| | - Brent A Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, Massachusett
| | - Joanne E Sordillo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Soma Datta
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Diane R Gold
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
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Weitz CA, Garruto RM. Stunting and the Prediction of Lung Volumes Among Tibetan Children and Adolescents at High Altitude. High Alt Med Biol 2015; 16:306-17. [PMID: 26397381 DOI: 10.1089/ham.2015.0036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study examines the extent to which stunting (height-for-age Z-scores ≤ -2) compromises the use of low altitude prediction equations to gauge the general increase in lung volumes during growth among high altitude populations. The forced vital capacity (FVC) and forced expiratory volume (FEV1) of 208 stunted and 365 non-stunted high-altitude Tibetan children and adolescents between the ages of 6 and 20 years are predicted using the Third National Health and Nutrition Examination Survey (NHANESIII) and the Global Lung Function Initiative (GLF) equations, and compared to observed lung volumes. Stunted Tibetan children show smaller positive deviations from both NHANESIII and GLF prediction equations at most ages than non-stunted children. Deviations from predictions do not correspond to differences in body proportions (sitting heights and chest circumferences relative to stature) between stunted and non-stunted children; but appear compatible with the effects of retarded growth and lung maturation that are likely to exist among stunted children. These results indicate that, before low altitude standards can be used to evaluate the effects of hypoxia, or before high altitude populations can be compared to any other group, it is necessary to assess the relative proportion of stunted children in the samples. If the proportion of stunted children in a high altitude population differs significantly from the proportion in the comparison group, lung function comparisons are unlikely to yield an accurate assessment of the hypoxia effect. The best solution to this problem is to (1) use stature and lung function standards based on the same low altitude population; and (2) assess the hypoxic effect by comparing observed and predicted values among high altitude children whose statures are most like those of children on whom the low altitude spirometric standard is based-preferably high altitude children with HAZ-scores ≥ -1.
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Affiliation(s)
- Charles A Weitz
- 1 Department of Anthropology, Temple University , Philadelphia, Pennsylvania
| | - Ralph M Garruto
- 2 Department of Anthropology, Binghamton University, State University of New York , Binghamton, New York
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Parazzi PLF, Marson FADL, Ribeiro MAGDO, de Almeida CCB, Martins LC, Paschoal IA, Toro AADC, Schivinski CIS, Ribeiro JD. Ventilatory abnormalities in patients with cystic fibrosis undergoing the submaximal treadmill exercise test. BMC Pulm Med 2015; 15:63. [PMID: 25985982 PMCID: PMC4446830 DOI: 10.1186/s12890-015-0056-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 04/22/2015] [Indexed: 11/10/2022] Open
Abstract
Background Exercise has been studied as a prognostic marker for patients with cystic fibrosis (CF), as well as a tool for improving their quality of life and analyzing lung disease. In this context, the aim of the present study was to evaluate and compare variables of lung functioning. Our data included: (i) volumetric capnography (VCAP) parameters: expiratory minute volume (VE), volume of exhaled carbon dioxide (VCO2), VE/VCO2, ratio of dead space to tidal volume (VD/VT), and end-tidal carbon dioxide (PetCO2); (ii) spirometry parameters: forced vital capacity (FVC), percent forced expiratory volume in the first second of the FVC (FEV1%), and FEV1/FVC%; and (iii) cardiorespiratory parameters: heart rate (HR), respiratory rate, oxygen saturation (SpO2), and Borg scale rating at rest and during exercise. The subjects comprised children, adolescents, and young adults aged 6–25 years with CF (CF group [CFG]) and without CF (control group [CG]). Methods This was a clinical, prospective, controlled study involving 128 male and female patients (64 with CF) of a university hospital. All patients underwent treadmill exercise tests and provided informed consent after study approval by the institutional ethics committee. Linear regression, Kruskal–Wallis test, and Mann–Whitney test were performed to compare the CFG and CG. The α value was set at 0.05. Results Patients in the CFG showed significantly different VCAP values and spirometry variables throughout the exercise test. Before, during, and after exercise, several variables were different between the two groups; statistically significant differences were seen in the spirometry parameters, SpO2, HR, VCO2, VE/VCO2, PetCO2, and Borg scale rating. VCAP variables changed at each time point analyzed during the exercise test in both groups. Conclusion VCAP can be used to analyze ventilatory parameters during exercise. All cardiorespiratory, spirometry, and VCAP variables differed between patients in the CFG and CG before, during, and after exercise. Electronic supplementary material The online version of this article (doi:10.1186/s12890-015-0056-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Paloma Lopes Francisco Parazzi
- Department of Pediatrics, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
| | - Fernando Augusto de Lima Marson
- Department of Pediatrics, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil. .,Department of Medical Genetics, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
| | | | - Celize Cruz Bresciani de Almeida
- Department of Pediatrics, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
| | - Luiz Cláudio Martins
- Clinical Hospital, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
| | - Ilma Aparecida Paschoal
- Department of Clinical Medics of the Faculty of Medical Sciences, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
| | - Adyleia Aparecida Dalbo Contrera Toro
- Department of Pediatrics, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
| | - Camila Isabel Santos Schivinski
- State University of Santa Catarina, Center of Physical Education and Sports, Coqueiros, 88080-350, Florianópolis, SC, Brazil.
| | - Jose Dirceu Ribeiro
- Department of Pediatrics, State University of Campinas, Tessália Vieira de Camargo 126, Cidade Universitária "Zeferino Vaz", 13083-887, Campinas, SP, Brazil.
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Lung volume and expiratory flow rates from pre- to post-puberty. Eur J Appl Physiol 2015; 115:1645-52. [DOI: 10.1007/s00421-015-3149-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 03/01/2015] [Indexed: 10/23/2022]
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Vermeulen S, Barreto M, La Penna F, Prete A, Martella S, Biagiarelli F, Villa MP. Exhaled breath temperature in children: reproducibility and influencing factors. J Asthma 2014; 51:743-50. [PMID: 24654705 DOI: 10.3109/02770903.2014.906606] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE This study will investigate the reproducibility and influencing factors of exhaled breath temperature measured with the tidal breathing technique in asthmatic patients and healthy children. METHODS Exhaled breath temperature, fractional exhaled nitric oxide, and spirometry were assessed in 124 children (63 healthy and 61 asthmatic), aged 11.2 ± 2.5 year, M/F 73/51. A modified version of the American Thoracic Society questionnaire on the child's present and past respiratory history was obtained from parents. Parents were also asked to provide detailed information on their child's medication use during the previous 4 weeks. Ear temperature, ambient temperature, and relative-ambient humidity were also recorded. RESULTS Exhaled breath temperature measurements were highly reproducible; the second measurement was higher than the first measurement, consistent with a test-retest situation. In 13 subjects, between-session within-day reproducibility of exhaled breath temperature was still high. Exhaled breath temperature increased with age and relative-ambient humidity. Exhaled breath temperature was comparable in healthy and asthmatic children; when adjusted for potential confounders (i.e. ambient conditions and subject characteristics), thermal values of asthmatic patients exceeded those of the healthy children by 1.1 °C. Normalized exhaled breath temperature, by subtracting ambient temperature, was lower in asthmatic patients treated with inhaled corticosteroids than in those who were corticosteroid-naive. CONCLUSION Measurements of exhaled breath temperature are highly reproducible, yet influenced by several factors. Corrected values, i.e. normalized exhaled breath temperature, could help us to assess the effect of therapy with inhaled corticosteroids. More studies are needed to improve the usefulness of the exhaled breath temperature measured with the tidal breathing technique in children.
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Affiliation(s)
- S Vermeulen
- Faculty of Medical Sciences, University of Groningen , Groningen , The Netherlands and
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Bastir M, García Martínez D, Recheis W, Barash A, Coquerelle M, Rios L, Peña-Melián Á, García Río F, O’Higgins P. Differential growth and development of the upper and lower human thorax. PLoS One 2013; 8:e75128. [PMID: 24073239 PMCID: PMC3779208 DOI: 10.1371/journal.pone.0075128] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 08/08/2013] [Indexed: 11/18/2022] Open
Abstract
The difficulties in quantifying the 3D form and spatial relationships of the skeletal components of the ribcage present a barrier to studies of the growth of the thoracic skeleton. Thus, most studies to date have relied on traditional measurements such as distances and indices from single or few ribs. It is currently known that adult-like thoracic shape is achieved early, by the end of the second postnatal year, with the circular cross-section of the newborn thorax transforming into the ovoid shape of adults; and that the ribs become inclined such that their anterior borders come to lie inferior to their posterior. Here we present a study that revisits growth changes using geometric morphometrics applied to extensive landmark data taken from the ribcage. We digitized 402 (semi) landmarks on 3D reconstructions to assess growth changes in 27 computed tomography-scanned modern humans representing newborns to adults of both sexes. Our analyses show a curved ontogenetic trajectory, resulting from different ontogenetic growth allometries of upper and lower thoracic units. Adult thoracic morphology is achieved later than predicted, by diverse modifications in different anatomical regions during different ontogenetic stages. Besides a marked increase in antero-posterior dimensions, there is an increase in medio-lateral dimensions of the upper thorax, relative to the lower thorax. This transforms the pyramidal infant thorax into the barrel-shaped one of adults. Rib descent is produced by complex changes in 3D curvature. Developmental differences between upper and lower thoracic regions relate to differential timings and rates of maturation of the respiratory and digestive systems, the spine and the locomotor system. Our findings are relevant to understanding how changes in the relative rates of growth of these systems and structures impacted on the development and evolution of modern human body shape.
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Affiliation(s)
- Markus Bastir
- Paleoanthropology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
- * E-mail:
| | - Daniel García Martínez
- Paleoanthropology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
- Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Wolfgang Recheis
- Department of Radiology, Medizinische Universität Innsbruck, Innsbruck, Austria
| | - Alon Barash
- Faculty of Medicine, Galilee Bar Ilan University, Zefat, Israel
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv, Israel
| | - Michael Coquerelle
- Paleoanthropology Group, Museo Nacional de Ciencias Naturales (CSIC), Madrid, Spain
| | - Luis Rios
- Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
- Fundación Aranzadi, San Sebastián, Spain
| | - Ángel Peña-Melián
- Departamento de Anatomía y Embriología, Universidad Complutense Madrid, Madrid, Spain
| | - Francisco García Río
- Hospital Universitario La Paz, Biomedical Research Institute (IdiPAZ), Madrid, Spain
| | - Paul O’Higgins
- Hull York Medical School (HYMS), University of York, York, United Kingdom
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Torjussen TM, Munthe-Kaas MC, Mowinckel P, Carlsen KH, Undlien DE, Lødrup Carlsen KC. Childhood lung function and the association with β2-adrenergic receptor haplotypes. Acta Paediatr 2013; 102:727-31. [PMID: 23463918 DOI: 10.1111/apa.12221] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/14/2013] [Accepted: 02/26/2013] [Indexed: 11/27/2022]
Abstract
AIM To determine associations between ADRB2 polymorphisms and lung function through childhood, and possible modification by gender, pet keeping or tobacco smoke. METHODS Four ADRB2 single nucleotide polymorphisms (rs1042711, rs1042713, rs1042714 and rs1800888) were genotyped in 953 children from the prospective birth cohort 'Environment and Childhood Asthma' study and analysed for association with flow-volume parameters at birth (tidal breathing) and at 10 years of age (maximally forced), stratified by environmental exposures. RESULTS The risk of reduced lung function was reduced in 10-year-old children carrying the most common ADRB2 haplotype (CGGC) (OR 0.45 (95% CI 0.25, 0.82)), whereas there was no association between lung function at birth and ADRB2 haplotypes. Tobacco smoke exposure, gender and pet keeping did not significantly interact with the haplotypes in influencing lung function. CONCLUSION This study demonstrates a possible protective effect by the ADRB2 haplotype I (CGGC) on reduced FEV1 in 10-year-old children, whereas no ADRB2 geno-/haplotypes were significantly associated with neonatal lung function. The ADRB2 gene thus appears to contribute to lung function development in childhood, independently of smoking, pets and gender.
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Affiliation(s)
- Tale M Torjussen
- Department of Paediatrics; Women and Children's Division; Oslo University Hospital; Oslo; Norway
| | | | - Petter Mowinckel
- Department of Paediatrics; Women and Children's Division; Oslo University Hospital; Oslo; Norway
| | | | - Dag E Undlien
- Department of Medical Genetics; Oslo University Hospital and University of Oslo; Oslo; Norway
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Rumpel JA, Ahmedani BK, Peterson EL, Wells KE, Yang M, Levin AM, Yang JJ, Kumar R, Burchard EG, Williams LK. Genetic ancestry and its association with asthma exacerbations among African American subjects with asthma. J Allergy Clin Immunol 2012; 130:1302-6. [PMID: 23069492 DOI: 10.1016/j.jaci.2012.09.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 08/17/2012] [Accepted: 09/01/2012] [Indexed: 02/04/2023]
Abstract
BACKGROUND There are large and persisting disparities in severe asthma exacerbations by race-ethnicity, and African American subjects are among those at greatest risk. It is unclear whether this increased risk solely represents differences in environmental exposures and health care or whether there is a predisposing genetic component. OBJECTIVE We sought to assess the relationship between genetic ancestry and severe exacerbations among African American subjects with asthma. METHODS Participants were part of the Study of Asthma Phenotypes and Pharmacogenomic Interactions by Race-ethnicity (SAPPHIRE). These subjects were 12 to 56 years of age, received care from a single large health system, and had a physician's diagnosis of asthma. Genetic ancestry was estimated by using a set of validated ancestry informative markers. Severe exacerbations (ie, asthma-related emergency department visits, hospitalizations, and burst oral steroid use) were prospectively identified from health care claims. RESULTS We assessed genetic ancestry in 392 African American subjects with asthma. The average proportion of African ancestry was 76.1%. A significant interaction was identified between ancestry and sex on severe exacerbations, such that the risk was significantly higher with increasing African ancestry among male but not female subjects. The association among male subjects persisted after adjusting for potential confounders (relative rate, 4.30 for every 20% increase in African ancestry; P = .029). CONCLUSIONS African ancestry was significantly and positively associated with severe exacerbations among male African American subjects. These findings suggest that a portion of the risk of asthma exacerbations in this high-risk group is attributable to a genetic risk factor that partitions with ancestry.
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Affiliation(s)
- Jennifer A Rumpel
- Department of Internal Medicine, Henry Ford Health System, Detroit, MI, USA
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Hsia CCW, Tawhai MH. What can imaging tell us about physiology? Lung growth and regional mechanical strain. J Appl Physiol (1985) 2012; 113:937-46. [PMID: 22582216 DOI: 10.1152/japplphysiol.00289.2012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The interplay of mechanical forces transduces diverse physico-biochemical processes to influence lung morphogenesis, growth, maturation, remodeling and repair. Because tissue stress is difficult to measure in vivo, mechano-sensitive responses are commonly inferred from global changes in lung volume, shape, or compliance and correlated with structural changes in tissue blocks sampled from postmortem-fixed lungs. Recent advances in noninvasive volumetric imaging technology, nonrigid image registration, and deformation analysis provide valuable tools for the quantitative analysis of in vivo regional anatomy and air and tissue-blood distributions and when combined with transpulmonary pressure measurements, allow characterization of regional mechanical function, e.g., displacement, strain, shear, within and among intact lobes, as well as between the lung and the components of its container-rib cage, diaphragm, and mediastinum-thereby yielding new insights into the inter-related metrics of mechanical stress-strain and growth/remodeling. Here, we review the state-of-the-art imaging applications for mapping asymmetric heterogeneous physical interactions within the thorax and how these interactions permit as well as constrain lung growth, remodeling, and compensation during development and following pneumonectomy to illustrate how advanced imaging could facilitate the understanding of physiology and pathophysiology. Functional imaging promises to facilitate the formulation of realistic computational models of lung growth that integrate mechano-sensitive events over multiple spatial and temporal scales to accurately describe in vivo physiology and pathophysiology. Improved computational models in turn could enhance our ability to predict regional as well as global responses to experimental and therapeutic interventions.
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Affiliation(s)
- Connie C W Hsia
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390-9034, USA
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Cheraghi M, Dadgarinejad A, Salvi S. A Cross-Sectional Study to Find Prevalence and Risk Factors for Childhood Asthma in Pune City, India. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/361456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We aimed to determine current prevalence of asthma and risk factors associated with it in Pune, India. Methods. This was a cross-sectional school-population-based study in which parents of school children aged 6-7 and 13-14 were administered an ISAAC questionnaire and an additional set of questions that detected the presence of potential risk factors known to be associated with asthma during 2008-2009 academic years. Results. Prevalence of current asthma was 6.7% (7% amongst 6-7-year olds and 6.3% amongst 13-14 year olds. Asthma was more common amongst boys (8.1%) than girls (4.9%) and more frequent in students studying in private schools (7.3%) than in those studying in public schools (5.8%). Risk factors such as family history of atopy, caesarian delivery, use of biomass fuel for cooking, absence of separate kitchen, absence of exclusive breastfeeding during the first 6 months of life, preterm birth, snoring, dampness at home, male sex, and parental smoking were significantly associated with asthma. Conclusion. There was a high prevalence of childhood asthma in Pune, India, which was associated with genetic and environmental risk factors.
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Affiliation(s)
- Maria Cheraghi
- Department of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Wehrmeister FC, Menezes AMB, Cascaes AM, Martínez-Mesa J, Barros AJD. Time trend of asthma in children and adolescents in Brazil, 1998-2008. Rev Saude Publica 2012; 46:242-50. [PMID: 22310651 DOI: 10.1590/s0034-89102012005000008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Accepted: 10/09/2011] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE To analyze the trends in asthma prevalence in children and adolescents between 1998 and 2008 in Brazil. METHODS Data on asthma prevalence from the 1998, 2003 and 2008 National Household Sample Surveys were analyzed. The sample was comprised of 141,402, 144,443 and 134,032 individuals in 1998, 2003 and 2008, respectively, and the analysis was adjusted for the sample design. Trends in asthma prevalence were described for sex, Brazilian regions and place of residence of children (zero to nine years of age) and adolescents (ten to 19 years of age). RESULTS The prevalence of asthma in children was 7.7% in 1998, 8.1% in 2003 and 8.5% in 2008, with an annual increase of 1%. The highest annual increase was observed in the Southeast and North regions (1.4%). Among adolescents, the prevalence of asthma was 4.4% in 1998, 5.0% in 2003 and 5.5% in 2008, with an increase of 2.2% per year. In the Northeast region, the annual increase in the prevalence of asthma was 3.5%. The greatest increases were observed in boys and in residents of rural areas. CONCLUSIONS Although asthma has decreased in some developing countries, the results found in Brazil point to an increase in this disease in children and adolescents between 1998 and 2008, especially in rural areas.
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Pramana IA, Latzin P, Schlapbach LJ, Hafen G, Kuehni CE, Nelle M, Riedel T, Frey U. Respiratory symptoms in preterm infants: burden of disease in the first year of life. Eur J Med Res 2011; 16:223-30. [PMID: 21719396 PMCID: PMC3352195 DOI: 10.1186/2047-783x-16-5-223] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Objective While respiratory symptoms in the first year of life are relatively well described for term infants, data for preterm infants are scarce. We aimed to describe the burden of respiratory disease in a group of preterm infants with and without bronchopulmonary dysplasia (BPD) and to assess the association of respiratory symptoms with perinatal, genetic and environmental risk factors. Methods Single centre birth cohort study: prospective recording of perinatal risk factors and retrospective assessment of respiratory symptoms during the first year of life by standardised questionnaires. Main outcome measures: Cough and wheeze (common symptoms), re-hospitalisation and need for inhalation therapy (severe outcomes). Patients: 126 preterms (median gestational age 28.7 weeks; 78 with, 48 without BPD) hospitalised at the University Children's Hospital of Bern, Switzerland 1999-2006. Results Cough occurred in 80%, wheeze in 44%, rehospitalisation in 25% and long term inhalation therapy in wheezers in 13% of the preterm infants. Using logistic regression, the main risk factor for common symptoms was frequent contact with other children. Severe outcomes were associated with maximal peak inspiratory pressure, arterial cord blood pH, APGAR and CRIB-Score. Conclusions Cough in preterm infants is as common as in term infants, whereas wheeze, inhalation therapy and re-hospitalisations occur more often. Severe outcomes are associated with perinatal risk factors. Preterm infants who did not qualify for BPD according to latest guidelines also showed a significant burden of respiratory disease in the first year of life.
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Affiliation(s)
- Isabelle A Pramana
- Devision of paediatric pneumology, Children's Hospital of the University of Bern, 3010 Bern, Switzerland.
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Pillarisetti N, Williamson E, Linnane B, Skoric B, Robertson CF, Robinson P, Massie J, Hall GL, Sly P, Stick S, Ranganathan S. Infection, Inflammation, and Lung Function Decline in Infants with Cystic Fibrosis. Am J Respir Crit Care Med 2011; 184:75-81. [DOI: 10.1164/rccm.201011-1892oc] [Citation(s) in RCA: 217] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Clark NM, Dodge JA, Thomas LJ, Andridge RA, Awad D, Paton JY. Asthma in 10- to 13-year-olds: challenges at a time of transition. Clin Pediatr (Phila) 2010; 49:931-7. [PMID: 20724329 PMCID: PMC3331991 DOI: 10.1177/0009922809357339] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In 10- to 13-year-old children with asthma, we know less than is desirable about the nature of the disease management tasks they face as youngsters approaching adolescence. This article reviews aspects of asthma management in youngsters at a time of significant transition. They experience puberty and growth spurts. Their cognitive abilities enable more abstract thinking. They seek individuation from their parents and socialization with peers. These factors influence asthma outcomes, including symptom control, health care use, and school attendance and performance. Furthermore, significant sex- and gender-related differences in outcome exist. Those with asthma who are 10 to 13 years of age contend not only with the particular management demands their chronic condition imposes on them but also the challenges associated with maturation. Most asthma management interventions do not account for the challenges faced at this transitional phase, and developmentally appropriate programs are needed.
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Affiliation(s)
- Noreen M. Clark
- Myron E. Wegman Distinguished University Professor, Director, Center for Managing Chronic Disease, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Julia A. Dodge
- Scientific Administrator, Center for Managing Chronic Disease, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Lara J. Thomas
- Research Specialist, Center for Managing Chronic Disease, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Rebecca A. Andridge
- Biostatistician, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Dan Awad
- Database Manager, Center for Managing Chronic Disease, University of Michigan, Ann Arbor, Michigan, United States of America
| | - James Y. Paton
- Division of Developmental Medicine, University of Glasgow Royal Hospital for Sick Children, Glasgow, United Kingdom
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Puig C, Fríguls B, Gómez M, García-Algar O, Sunyer J, Vall O. [Relationship between lower respiratory tract infections in the first year of life and the development of asthma and wheezing in children]. Arch Bronconeumol 2010; 46:514-21. [PMID: 20832927 DOI: 10.1016/j.arbres.2010.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Revised: 05/27/2010] [Accepted: 07/02/2010] [Indexed: 10/19/2022]
Abstract
INTRODUCTION There is limited knowledge on the relationship between lower respiratory tract infections (LRTI) and asthma and wheezing during infancy, as there are few studies with prospective design, birth cohort and in non selected population. The objectives of the present study were to determine the prevalence of asthma and recurrent wheezing in childhood and to analyse the relationship between LTRI during the first year of life and the development of asthma and/or wheezing in childhood. PATIENTS AND METHODS Prospective birth cohort study conducted in the Hospital del Mar (Barcelona). We recruited 487 children, followed up from the pregnancy to the 6th year of life. As outcomes we studied: the presence of asthma and wheezing. As independent variables we studied: LTRI occurring during the first year of life, and some covariables including, among others: prematurity, birth weight, maternal history of asthma and atopy, breastfeeding, prenatal exposure to tobacco. RESULTS The asthma prevalence at 6 year of age was 9.3%. The variables associated with the development of asthma were LTRI, prematurity, atopic mother and formula breastfeeding. LTRI during the first year of life were also related with early recurrent wheezing and persistent wheezing. CONCLUSIONS Our results confirm that LTRI during the first year of life are related to the diagnosis of asthma and with the clinical phenotypes of early wheezing and persistent wheezing. These results are in accordance with the concept that LTRI occurring during a critical period of development, as are the first years of life, have an important role on in the later development of asthma and recurrent wheezing.
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Affiliation(s)
- Carme Puig
- IMIM-Hospital del Mar, Barcelona, España
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Batllés-Garrido J, Torres-Borrego J, Rubí-Ruiz T, Bonillo-Perales A, González-Jiménez Y, Momblán De Cabo J, Aguirre-Rodríguez J, Losillas-Maldonado A, Torres-Daza M. Prevalence and factors linked to atopy in 10-and 11-year-old children in Almería, Spain. Allergol Immunopathol (Madr) 2010; 38:13-9. [PMID: 20092934 DOI: 10.1016/j.aller.2009.07.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 07/01/2009] [Accepted: 07/02/2009] [Indexed: 11/29/2022]
Abstract
BACKGROUND During the last decades there has been an increase in both allergic diseases and allergic sensitisation, probably due to changes in the environment and living habits. ISAAC Phase II was designed to establish the prevalence and associated factors to asthma and allergic disorders in childhood. AIM To assess the prevalence and factors linked to atopy in 10-11 year-old children from Almería (Spain). METHODS As a part of ISAAC II, a survey was conducted among a sample of 1143 schoolchildren using standardised questionnaires and skin-prick testing. RESULTS The overall prevalence of atopy was 42.5%. Most common sensitisations were to Dermatophagoides pteronyssinus (36.2%), D. farinae (32.3%), cat (10.8%), Alternaria (7%), grass (6%), and tree pollen (1.7%). 34.9% of these sensitisations could be regarded as subclinical sensitisations. The fractions of asthma, rhinitis and eczema attributable to atopy were 49.2%, 40.4% y 18.6%, respectively. After multivariate analysis, the risk of atopy was significantly lower among females (OR 0.62, CI 95% 0.45-0.86); children with older siblings (OR 0.67; CI 95% 0.49-0.92); intestinal parasites (OR 0.68; CI 95% 0.48-0.97); contact with farm animals in the past (OR 0.48 CI 95% 0.23-0.99); or other animals at present (OR 0.53 CI 95% 0.30-0.95). To have an allergic father (OR 2.96 CI 95% 1.77-4.94) was the only significant risk factor. CONCLUSIONS We found several independent factors which significantly protect against atopic sensitisation. These protective factors were not the same for asthma, rhinitis or eczema, suggesting that other factors could interact to influence atopy and act against such protective factors.
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Affiliation(s)
- J Batllés-Garrido
- Pediatric Pulmonology and Allergy Unit, Service of Pediatrics, Hospital Torrecárdenas, Almería, Spain.
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Spirometric values in Gypsy (Roma) children. Respir Med 2008; 102:1321-8. [DOI: 10.1016/j.rmed.2008.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2007] [Revised: 02/11/2008] [Accepted: 03/20/2008] [Indexed: 11/15/2022]
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Gerritsen J. Airway responsiveness in teenagers is becoming sexier. Am J Respir Crit Care Med 2008; 178:321-2. [PMID: 18683291 DOI: 10.1164/rccm.200805-736ed] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Seibold MA, Wang B, Eng C, Kumar G, Beckman KB, Sen S, Choudhry S, Meade K, Lenoir M, Watson HG, Thyne S, Williams LK, Kumar R, Weiss KB, Grammer LC, Avila PC, Schleimer RP, Burchard EG, Brenner R. An african-specific functional polymorphism in KCNMB1 shows sex-specific association with asthma severity. Hum Mol Genet 2008; 17:2681-90. [PMID: 18535015 DOI: 10.1093/hmg/ddn168] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A highly heritable and reproducible measure of asthma severity is baseline pulmonary function. Pulmonary function is largely determined by airway smooth muscle (ASM) tone and contractility. The large conductance, voltage and calcium-activated potassium (BK) channel negatively regulates smooth muscle tone and contraction in ASM. The modulatory subunit of BK channels, the beta1-subunit, is critical for proper activation of BK channels in smooth muscle and has shown sex hormone specific regulation. We hypothesized that KCNMB1 genetic variants in African Americans may underlie differences in bronchial smooth muscle tone and thus pulmonary function, possibly in a sex-specific manner. Through resequencing of the KCNMB1 gene we identified several common variants including a novel African-specific coding polymorphism (C818T, R140W). The C818T SNP and four other KCNMB1 variants were genotyped in two independent groups of African American asthmatics (n = 509) and tested for association with the pulmonary function measure--forced expiratory volume (FEV(1)) % of predicted value. The 818T allele is associated with a clinically significant decline (-13%) in FEV(1) in both cohorts of asthmatics among males but not females (P(combined) = 0.0003). Patch clamp electrophysiology studies of the BK channel expressed with the 140Trp variant of the beta1-subunit demonstrated significantly reduced channel openings, predicted by the loss of pulmonary function observed. African American male asthmatics carrying the 818T allele (10% of population) are potentially at risk for greater airway obstruction and increased asthma morbidity. Female asthmatics may be insulated from the deleterious effects of the 818T allele by estrogen-mediated upregulation in BK channel activity.
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Affiliation(s)
- Max A Seibold
- Department of Medicine, University of California San Francisco, San Francisco, CA 94143-2911, USA.
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de Benedictis FM, Baraldi E, Boner A. Gender differences in the effectiveness of asthma treatment. Pediatrics 2008; 121:1289; author reply 1289-90. [PMID: 18519503 DOI: 10.1542/peds.2008-0373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
| | - Eugenio Baraldi
- Department of Pediatrics
University of Padova
35128 Padova, Italy
| | - Attilio Boner
- Department of Pediatrics
University of Verona
37134 Verona, Italy
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