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        Distribution, composition, and activity of airway-associated adipose tissue in the porcine lung

        Patients with comorbid asthma-obesity experience greater disease severity and are less responsive to therapy. We have previously reported adipose tissue within the airway wall that positively correlated with body mass index. Accumulation of biologically active adipose tissue may result in the local release of adipokines and disrupt large and small airway function depending on its anatomical distribution. This study therefore characterized airway-associated adipose tissue distribution, lipid composition, and adipokine activity in a porcine model. ...

        Research

        From Beneath the Skin to the Airway Wall: Understanding the Pathological Role of Adipose Tissue in Comorbid Asthma-Obesity

        This article provides a contemporary report on the role of adipose tissue in respiratory dysfunction. Adipose tissue is distributed throughout the body, accumulating beneath the skin (subcutaneous), around organs (visceral), and importantly in the context of respiratory disease, has recently been shown to accumulate within the airway wall: "airway-associated adipose tissue." Excessive adipose tissue deposition compromises respiratory function and increases the severity of diseases such as asthma. ...

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        Biodiesel feedstock determines exhaust toxicity in 20% biodiesel: 80% mineral diesel blends

        To address climate change concerns, and reduce the carbon footprint caused by fossil fuel use, it is likely that blend ratios of renewable biodiesel with commercial mineral diesel fuel will steadily increase, resulting in biodiesel use becoming more widespread. ...

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        Azithromycin inhibits mucin secretion, mucous metaplasia, airway inflammation, and airways hyperresponsiveness in mice exposed to house dust mite extract

        Excessive production, secretion, and retention of abnormal mucus is a pathological feature of many obstructive airways diseases including asthma. Azithromycin is an antibiotic that also possesses immunomodulatory and mucoregulatory activities, which may contribute to the clinical effectiveness of azithromycin in asthma. ...

        Research

        Exacerbation of chronic cigarette-smoke induced lung disease by rhinovirus in mice

        A significant proportion of chronic obstructive pulmonary disease exacerbations are strongly associated with rhinovirus infection (HRV). In this study, we combined long-term cigarette smoke exposure with HRV infection in a mouse model. ...

        Research

        Long-term exposure of mice to 890 ppm atmospheric CO2 alters growth trajectories and elicits hyperactive behaviours in young adulthood

        Atmospheric carbon dioxide (CO2) levels are currently at 418 parts per million (ppm), and by 2100 may exceed 900 ppm. The biological effects of lifetime exposure to CO2 at these levels is unknown. Previously we have shown that mouse lung function is altered by long-term exposure to 890 ppm CO2. Here, we assess the broader systemic physiological responses to this exposure. ...

        Research

        In Vitro primary human airway epithelial whole exhaust exposure

        The method outlined in this article is a customization of the whole exhaust exposure method generated by Mullins et al. (2016) using reprogrammed primary human airway epithelial cells as described by Martinovich et al. (2017). It has been used successfully to generate recently published data (Landwehr et al. 2021). The goal was to generate an exhaust exposure model where exhaust is collected from a modern engine, real-world exhaust concentrations are used and relevant tissues exposed to assess the effects of multiple biodiesel exposures. ...

        Research

        Editorial overview: The physiology of the diseased lung

        Alexander Larcombe A BScEnv (Hons) PhD Team Leader, Respiratory Environmental Health Team Leader, Respiratory Environmental Health Associate Professor Alexander Larcombe began work at the Telethon Institute in 2005 and is now a Senior Research ...

        Research

        Confounding effects of gavage in mice: Impaired respiratory structure and function

        It is therefore clear that gavage can have significant impacts on experimental animals in terms of their stress response and overall morbidity and mortality ...

        Research

        Development of a screening tool to identify safer biodiesels

        Alexander Anthony Larcombe Kicic A A BScEnv (Hons) PhD BSc (Hons) PhD Team Leader, Respiratory Environmental Health Rothwell Family Fellow; Head, Airway Epithelial Research Anthony.Kicic@telethonkids.org.au Team Leader, Respiratory Environmental ...

        Research

        Maternal high fat diet compromises survival and modulates lung development of offspring, and impairs lung function of dams

        While maternal high fat diet compromised litter survival, it also promoted somatic and lung growth (increased lung volume) in the offspring ...

        Research

        Optical coherence tomography-based contact indentation for diaphragm mechanics in a mouse model of transforming growth factor alpha induced lung disease

        This study tested the utility of optical coherence tomography-based indentation to assess mechanical properties of respiratory tissues in disease ...

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