https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Pathways linked to unresolved inflammation and airway remodelling characterize the transcriptome in two independent severe asthma cohorts https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:50107 Wed 12 Jul 2023 13:43:56 AEST ]]> Crucial role for lung iron level and regulation in the pathogenesis and severity of asthma https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:41158 Thu 28 Jul 2022 09:27:19 AEST ]]> IL-22 and its receptors are increased in human and experimental COPD and contribute to pathogenesis https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46962 Il22−/−) mice. CS-induced airway remodelling and emphysema-like alveolar enlargement did not occur in Il22−/− mice. Il22−/− mice had improved lung function in terms of airway resistance, total lung capacity, inspiratory capacity, forced vital capacity and compliance. These data highlight important roles for IL-22 and its receptors in human COPD and CS-induced experimental COPD.]]> Mon 12 Dec 2022 14:27:30 AEDT ]]> TLR7 promotes smoke-induced experimental lung damage through the activity of mast cell tryptase https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:54960 Fri 22 Mar 2024 15:34:43 AEDT ]]> Sputum macrophage diversity and activation in asthma: Role of severity and inflammatory phenotype https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46346 via NF-κB, eicosanoid biosynthesis via the lipoxygenase pathway and IL-2 biosynthesis (all P<.01). Sputum macrophage number and the ES for most macrophage signatures were higher in the TAC3 group compared to TAC1 and TAC2 asthmatics. However, a high enrichment was found in TAC1 for 3 modules showing inflammatory pathways linked to Toll-like and TNF receptor activation and arachidonic acid metabolism (P<.001) and in TAC2 for the inflammasome and interferon signalling pathways (P<.001). Data were validated in the ADEPT cohort. Module analysis provides additional information compared to conventional M1 and M2 classification. TR-Mφ were enriched in TAC3 and associated with mitochondrial function. Conclusions: Macrophage activation is attenuated in severe granulocytic asthma highlighting defective innate immunity except for specific subsets characterized by distinct inflammatory pathways.]]> Fri 18 Nov 2022 10:08:37 AEDT ]]> Toll-like receptor 2 and 4 have opposing roles in the pathogenesis of cigarette smoke-induced chronic obstructive pulmonary disease https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33085 -/-) and TLR4-deficient (Tlr4-/-) mice. CS-induced airway fibrosis, characterized by increased collagen deposition around small airways, was not altered in Tlr2-/- mice but was attenuated in Tlr4-/- mice compared with CS-exposed WT controls. However, Tlr2-/- mice had increased CS-induced emphysema-like alveolar enlargement, apoptosis, and impaired lung function, while these features were reduced in Tlr4-/- mice compared with CS-exposed WT controls. Taken together, these data highlight the complex roles of TLRs in the pathogenesis of COPD and suggest that activation of TLR2 and/or inhibition of TLR4 may be novel therapeutic strategies for the treatment of COPD.]]> Fri 01 Apr 2022 09:24:33 AEDT ]]>