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Ancestral SARS-CoV-2, but not Omicron, replicates less efficiently in primary pediatric nasal epithelial cellsChildren typically experience more mild symptoms of Coronavirus Disease 2019 (COVID-19) when compared to adults. There is a strong body of evidence that children are also less susceptible to Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection with the ancestral viral isolate.
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Macrophage PD-1 associates with neutrophilia and reduced bacterial killing in early cystic fibrosis airway diseaseMacrophages are the major resident immune cells in human airways coordinating responses to infection and injury. In cystic fibrosis, neutrophils are recruited to the airways shortly after birth, and actively exocytose damaging enzymes prior to chronic infection, suggesting a potential defect in macrophage immunomodulatory function.
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Toxicity of different biodiesel exhausts in primary human airway epithelial cells grown at air-liquid interfaceBiodiesel is created through the transesterification of fats/oils and its usage is increasing worldwide as global warming concerns increase. Biodiesel fuel properties change depending on the feedstock used to create it.
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ACE2 expression is elevated in airway epithelial cells from older and male healthy individuals but reduced in asthmaCOVID-19 is complicated by acute lung injury, and death in some individuals. It is caused by SARS-CoV-2 that requires the ACE2 receptor and serine proteases to enter AEC. We determined what factors are associated with ACE2 expression particularly in patients with asthma and COPD. We obtained lower AEC from 145 people from two independent cohorts, aged 2-89 years, Newcastle (n = 115) and Perth (n = 30), Australia. The Newcastle cohort was enriched with people with asthma (n = 37) and COPD (n = 38). Gene expression for ACE2 and other genes potentially associated with SARS-CoV-2 cell entry was assessed by qPCR, and protein expression was confirmed with immunohistochemistry on endobronchial biopsies and cultured AEC.
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A tonsil organ model to evaluate carriage, disease mechanisms and therapeutic interventions for the treatment and prevention of Group A Streptococcus infectionsAnthony Tim Kicic Barnett BSc (Hons) PhD PhD Rothwell Family Fellow; Head, Airway Epithelial Research Head, Strep A Pathogenesis and Diagnostics
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The Contribution of Geogenic Particulate Matter to Lung Disease in Indigenous ChildrenThe aim of this study was to assess the relationship between dust levels and health in Indigenous children in Western Australia
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Hypoxia and sterile inflammation in cystic fibrosis airways: Mechanisms and potential therapiesIn this review, we consider recent evidence regarding hypoxia and sterile inflammation in cystic fibrosis airways
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DNA Methylation Profiles of Airway Epithelial Cells and PBMCs from Healthy, Atopic and Asthmatic ChildrenAllergic inflammation is commonly observed in a number of conditions that are associated with atopy including asthma, eczema and rhinitis.
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Regional Differences in Susceptibiity of Bronchial Epithelium to Mesenchymal Transition and Inhibition by the Macrolide Antibiotic AzithromycinDysregulated repair following epithelial injury is a key forerunner of disease in many organs, and the acquisition of a mesenchymal phenotype by the injured...
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Biodiesel exhaust-induced cytotoxicity and proinflammatory mediator production in human airway epithelial cellsOur results show that canola biodiesel exhaust exposure elicits inflammation and reduces viability of human epithelial cell cultures in vitro when compared...