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ACE2 expression is elevated in airway epithelial cells from older and male healthy individuals but reduced in asthma

COVID-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.

Decoding Susceptibility to Respiratory Viral Infections and Asthma Inception in Children

Human Respiratory Syncytial Virus and Human Rhinovirus are the most frequent cause of respiratory tract infections in infants and children and are major triggers of acute viral bronchiolitis, wheezing and asthma exacerbations.

Whole-cell pertussis vaccine in early infancy for the prevention of allergy

This is a protocol for a Cochrane Review (intervention). The objectives were to assess the efficacy and safety of whole‐cell pertussis (wP) vaccinations in comparison to acellular pertussis (aP) vaccinations in early infancy for the prevention of atopic diseases in children.

Vitamin D receptor polymorphisms are associated with severity of wheezing illnesses and asthma exacerbations in children

These findings suggest that genetic variants at the VDR locus may play a role in acute wheeze/asthma severity in children

Blocking Notch3 Signaling Abolishes MUC5AC Production in Airway Epithelial Cells from Asthmatics

We demonstrate that NOTCH3 is a regulator of MUC5AC production

Vitamin D over the first decade and susceptibility to childhood allergy and asthma

We aimed to research relationships between 25(OH)D levels from birth to 10 y/o and susceptibility to allergic sensitization, respiratory issues and asthma.

Clinical characteristics of eosinophilic asthma exacerbations

Eosinophilic asthma exacerbations may be clinically more severe than non-eosinophilic exacerbation

Characteristics associated with clinical severity and inflammatory phenotype of naturally occurring virus-induced exacerbations of asthma in adults

Type 2 inflammation is present in patients during virus-induced asthma exacerbations, to the same degree as non-viral exacerbations

Identification of epithelial phospholipase A2 receptor 1 as a potential target in asthma

PLA2R1 is increased in the airway epithelium in asthma, and serves as a regulator of airway hyperresponsiveness, airway permeability, antigen sensitization, and airway inflammation

Impaired airway epithelial cell responses from children with asthma to rhinoviral infection

Human rhinovirus infection delays repair and inhibits apoptotic processes in epithelial cells from non-asthmatic and asthmatic children