Background: Environmental exposures in early life appear to play an important role in the pathogenesis of childhood asthma, but the potentially modifiable exposures that lead to asthma remain uncertain.
Objective: We sought to identify early-life environmental risk factors for childhood asthma in a birth cohort of high-risk inner-city children.
Methods: We examined the relationship of prenatal and early-life environmental factors to the occurrence of asthma at 7 years of age among 442 children.
Results: Higher house dust concentrations of cockroach, mouse, and cat allergens in the first 3 years of life were associated with lower risk of asthma (for cockroach allergen: odds ratio per interquartile range increase in concentration, 0.55; 95% CI, 0.36-0.86; P < .01). House dust microbiome analysis using 16S ribosomal RNA sequencing identified 202 and 171 bacterial taxa that were significantly (false discovery rate < 0.05) more or less abundant, respectively, in the homes of children with asthma. A majority of these bacteria were significantly correlated with 1 of more allergen concentrations. Other factors associated significantly positively with asthma included umbilical cord plasma cotinine concentration (odds ratio per geometric SD increase in concentration, 1.76; 95% CI, 1.00-3.09; P = .048) and maternal stress and depression scores.
Conclusion: Among high-risk inner-city children, higher indoor levels of pet or pest allergens in infancy were associated with lower risk of asthma. The abundance of a number of bacterial taxa in house dust was associated with increased or decreased asthma risk. Prenatal tobacco smoke exposure and higher maternal stress and depression scores in early life were associated with increased asthma risk.
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http://dx.doi.org/10.1016/j.jaci.2017.06.040 | DOI Listing |
Pediatr Infect Dis J
January 2025
From the Innovation and Global Pediatric Infectious Disease, Biomedical Research Foundation of the University Hospital 12 de Octubre (FIBH12O), Instituto de Investigación Hospital 12 de Octubre (imas12), Madrid, Spain.
In this prospective cohort study with 2326 hospitalized children and young people with coronavirus disease 2019 in Spain and Colombia, 36.4% had comorbidities. Asthma, recurrent wheezing, chronic neurological, cardiac and pulmonary diseases significantly increased the risk of severe outcomes such as death, mechanical ventilation and intensive care unit admission.
View Article and Find Full Text PDFJ Family Med Prim Care
December 2024
National Center for Immunizations and Respiratory Diseases, US Centers for Disease Control and Prevention, USA.
Introduction: While various demographic factors and underlying medical conditions are associated with the development of post-COVID conditions within a month after SARS-CoV-2 infection, less is known about factors associated with post-COVID symptoms that persist for 6 months or more. The aim of this review was to determine the association between underlying conditions, other risk factors, health behaviors, and the presence of symptoms ≥6 months after COVID-19.
Methods: Studies reporting on post-COVID symptoms were searched in databases, including Medline, EMBASE, Global Health, PsycInfo, Scopus, CINAHL, Proquest, and WHO COVID-19 literature, from the beginning of the pandemic until November 2022.
J Allergy Clin Immunol
January 2025
Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI.
Background: Determining why some upper respiratory illnesses provoke asthma exacerbations remains an unmet need.
Objective: To identify transcriptome-wide gene expression changes associated with colds that progress to exacerbation.
Methods: 208 urban children (6-17 years) with exacerbation-prone asthma were prospectively monitored for up to two cold illnesses.
Allergol Immunopathol (Madr)
January 2025
Department of Pediatric Respiratory Medicine, Anhui Provincial Children's Hospital, Hefei City, Anhui Province, China.
This study aimed to investigate the factors influencing the complication of allergic rhinitis in children with bronchial asthma and to construct a nomogram model to predict the occurrence of allergic rhinitis. A total of 190 children with bronchial asthma admitted to our hospital from August 2020 to August 2024 were retrospectively analyzed. The children were randomly divided into the training cohort (133 cases) and validation cohort (57 cases) in a ratio of 7:3.
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