To evaluate the association between the presence of asthma and allergy, and airborne endotoxin in homes of school-age children in Kaohsiung City, Taiwan, with a case-control study design by matching the age and class exposure. Data collection of home visits included an interviewer-administered questionnaire and air sampling of participants' homes for endotoxin, bacteria, and fungi, as well as temperature and relative humidity measurements. Endotoxin was detected in all air samples with a median value of 0.67 EU m. In the adjusted logistic regression model, household airborne endotoxin was associated with higher prevalence of asthma and allergy; OR = 4.88 (95% CI 1.16-20.55) for Q3 (between 0.67 and 1.97 EU m ) vs. Q1 (< 0.31 EU m ), with statistical significance. Airborne fungi were associated with higher prevalence of asthma and allergy; OR = 4.47 (95% CI 1.13-17.69) for Q3 (between 314 and 699 CFU m ) vs. Q1 (< 159 CFU m ) in adjusted logistic regression models. Airborne endotoxin and fungi were significantly associated with children's asthma and allergy.
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http://dx.doi.org/10.1007/s11356-020-07899-x | DOI Listing |
Inhal Toxicol
January 2025
Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico.
Objective: The present study evaluated urinary oxidative stress (OxS) biomarkers to explain the extrapulmonary effect of renal function decline due to subchronic inhalation exposure to particles smaller than 2.5 μm, as well as the correlation of the biomarkers with the particles' endotoxin content.
Materials And Methods: Adult male Sprague-Dawley rats were exposed to subchronic inhalation of particles smaller than 2.
J Hazard Mater
November 2024
Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung City, Taiwan, ROC; Institute of Environmental Engineering, College of Engineering, National Sun Yat-Sen University, Kaohsiung City, Taiwan, ROC; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung City 807, Taiwan, ROC; Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung City, Taiwan, ROC; Institute of Wildlife Conservation, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung City, Taiwan, ROC. Electronic address:
Background: Air purifiers can enhance indoor air quality and health outcomes, and studies have primarily focused on filters and particulate matter (PM) in households. Photocatalytic oxidation (PCO) is a promising technique for eliminating gaseous pollutants and bioaerosols. However, no field study was conducted in household.
View Article and Find Full Text PDFJ Occup Environ Hyg
December 2024
Département de Biochimie, de Microbiologie et de Bio-informatique, Faculté des Sciences et de Génie, Université Laval, Quebec City, Quebec, Canada.
Awareness about laying hen welfare has led to the phase-out of conventional battery cages in favor of the adoption of alternative housing systems for egg production in many countries. However, the greater freedom of movement for animals and the presence of manure and litter (sawdust, straw, feathers, etc.) on the floor in some alternative housing systems may be suitable conditions for dusts, bacteria, and fungi to be aerosolized, raising concerns about indoor air quality and respiratory health of workers.
View Article and Find Full Text PDFCell Rep
October 2024
McMaster Immunology Research Centre, Department of Medicine, and M. G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON L8S 4K1, Canada. Electronic address:
Recent evidence indicates that tissue-resident innate immune memory and trained innate immunity (TII) can be induced centrally in myeloid cells within the bone marrow and locally in tissue-resident macrophages in respiratory mucosal tissues. However, it remains unclear whether acute exposure to airborne microbial components like lipopolysaccharide (LPS) induces lasting innate immune memory in airway macrophages and TII capable of protection against heterologous pathogens. Using a murine model, we demonstrate that acute LPS exposure leads to dynamic changes in the immune phenotype of airway macrophages that persist long after the acute inflammatory response has subsided.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
October 2024
Department of Pediatrics, The Global TB Program, William T Shearer Center for Immunobiology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030.
Severe and chronic infections, including pneumonia, sepsis, and tuberculosis (TB), induce long-lasting epigenetic changes that are associated with an increase in all-cause postinfectious morbidity and mortality. Oncology studies identified metabolic drivers of the epigenetic landscape, with the tricarboxylic acid (TCA) cycle acting as a central hub. It is unknown if the TCA cycle also regulates epigenetics, specifically DNA methylation, after infection-induced immune tolerance.
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