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Animal-free peptones support bacteriophage propagation for therapeutic use without altering bactericidal activity or genomic integrity

Bacteriophage (phage) propagation has traditionally relied on bacterial culture media containing animal-derived ingredients; however, safety concerns with animal-derived materials for production of phages for therapeutic use limit their acceptability. We compared animal-free and traditional media formulations, and evaluated effects on phage yield, bactericidal activity, and genomic characteristics, hypothesizing no significant differences would be observed.

Evaluating the Scale-Up and Sustainability of the Paediatric ESCALATION System in Country Western Australia: A Multi-Methods Study

To identify factors influencing implementation and integration of the paediatric ESCALATION system in country Western Australia.

Difficult but doable: Health professional perspectives of assessing clinical deterioration in children with dark-coloured skin

Observable signs of clinical deterioration may present differently in children with dark-coloured skin, leading to potential missed or delayed recognition. It is unknown how health professionals approach assessment in children with dark-coloured skin. 

Corrigendum to: “COVID-19 monitoring with sparse sampling of sewered and non-sewered wastewater in urban and rural communities” [iScience, Volume 26, Issue 7 (2023) 107019]

Anthony Kicic BSc (Hons) PhD Head, Airway Epithelial Research; WA Cystic Fibrosis Research Collaborative Program Fellowship; Stan Perron Charitable

Innate epithelial and functional differences in airway epithelium of children with acute wheeze

Early childhood wheeze is a major risk factor for asthma. However, not all children who wheeze will develop the disease. The airway epithelium has been shown to be involved in asthma pathogenesis. Despite this, the airway epithelium of children with acute wheeze remains poorly characterized.

What goes up must come down: dynamics of type 1 interferon signaling across the lifespan

Type 1 interferons (T1IFNs) are typically expressed in low concentrations under homeostatic conditions, but upon pathogenic insult or perturbation of the pathway, these critical immune signaling molecules can become either protectors from or drivers of pathology. While essential for initiating antiviral defense and modulating inflammation, dysregulation of T1IFN signaling can contribute to immunopathology, making it and its associated pathways prime targets for immune evasion and disruption by pathogens. 

Interactions between bacteria in the human nasopharynx: a scoping review

Emerging evidence indicates that interactions between bacteria shape the nasopharyngeal microbiome and influence respiratory health. This Review uses the systematic scoping methodology to summarise 88 studies including observational and experimental studies, identifying key interactions between bacteria that colonise the human nasopharynx. 

Real world effectiveness of early ensitrelvir treatment in patients with SARS-CoV-2, a retrospective case series

Ensitrelvir, a 3C-like protease inhibitor, received emergency approval in Japan in November 2022 for treating non-hospitalized patients with mild-to-moderate COVID-19. However, confirmation of its real-world clinical effectiveness is limited.

Profiling epithelial viral receptor expression in amniotic membrane and nasal epithelial cells at birth

Children with wheeze and asthma present with airway epithelial vulnerabilities, such as impaired responses to viral infection. It is postulated that the in utero environment may contribute to the development of airway epithelial vulnerabilities.  

A complete genome of an obligately lytic Pseudomonas aeruginosa bacteriophage, Minga-mokiny 4

We report the isolation of a bacteriophage with obligately lytic activity against Pseudomonas aeruginosa from wastewater. The reported phage, Minga-mokiny 4, appears to belong to the Schitoviridae family, is of the Litunavirus genus, and has a 72,362-bp genome. No known genes associated with lysogeny, bacterial resistance, or virulence were predicted.