https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Visualisation of Multiple Tight Junctional Complexes in Human Airway Epithelial Cells https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47470 Wed 24 Jan 2024 15:57:20 AEDT ]]> Electronic cigarettes: a position statement from the Thoracic Society of Australia and New Zealand* https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47156 Public Health Consequences of E-Cigarettes from the United States NASEM was accepted as reflective of evidence to mid-2017. A search for papers subsequently published in peer-reviewed journals was conducted in August 2018. A small number of robust and important papers published until March 2019 were also identified and included. Groups identified studies that extended, modified or contradicted the NASEM report. A total of 3793 papers were identified and reviewed, with summaries and draft position statements developed and presented to TSANZ membership in April 2019. After feedback from members and external reviewers, a collection of position statements was finalized in December 2019. EC have adverse lung effects and harmful effects of long-term use are unknown. EC are unsuitable consumer products for recreational use, part-substitution for smoking or long-term exclusive use by former smokers. Smokers who require support to quit smoking should be directed towards approved medication in conjunction with behavioural support as having the strongest evidence for efficacy and safety. No specific EC product can be recommended as effective and safe for smoking cessation. Smoking cessation claims in relation to EC should be assessed by established regulators.]]> Wed 14 Dec 2022 15:34:26 AEDT ]]> Previous influenza infection exacerbates allergen specific response and impairs airway barrier integrity in pre‐sensitized mice https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53717 Wed 10 Jan 2024 11:16:55 AEDT ]]> Effect of human rhinovirus infection on airway epithelium tight junction protein disassembly and transepithelial permeability https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26099 TM Western assays. Transepithelial permeability assays were performed to assess effects on barrier functionality. RT2 Profiler focused qPCR arrays and pathway analysis evaluating associations between human TJ and antiviral response were performed to identify potential interactions and pathways between genes of interests. Results: HRV-1B infection affected viability that was both time and TCID⁵⁰ dependent. Significant increases in apoptosis and viral replication post-infection correlated with viral titer. Viral infection significantly decreased claudin-1 protein expression at the lower TCID⁵⁰, while a significant decrease in all three TJ protein expressions occurred at higher TCID⁵⁰. Decrease in protein expression was concomitant with significant increases in epithelial permeability of fluorescein isothiocynate labeled-dextran 4 and 20 kDa. Analysis of focused qPCR arrays demonstrated a significant decrease in ZO-1 gene expression. Furthermore, network analysis between human TJ and antiviral response genes revealed possible interactions and regulation of TJ genes via interleukin (IL)-15 in response to HRV-1B infection. Conclusion: HRV-1B infection directly alters human airway epithelial TJ expression leading to increased epithelial permeability potentially via an antiviral response of IL-15.]]> Sat 24 Mar 2018 07:39:52 AEDT ]]>