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Endocytic recycling is central to circadian collagen fibrillogenesis and disrupted in fibrosis.
Elife
January 2025
Wellcome Centre for Cell-Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom.
Collagen-I fibrillogenesis is crucial to health and development, where dysregulation is a hallmark of fibroproliferative diseases. Here, we show that collagen-I fibril assembly required a functional endocytic system that recycles collagen-I to assemble new fibrils. Endogenous collagen production was not required for fibrillogenesis if exogenous collagen was available, but the circadian-regulated vacuolar protein sorting (VPS) 33b and collagen-binding integrin α11 subunit were crucial to fibrillogenesis.
View Article and Find Full Text PDFPLAC8 attenuates pulmonary fibrosis and inhibits apoptosis of alveolar epithelial cells via facilitating autophagy.
Commun Biol
January 2025
Department of Pulmonary and Critical Care Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
Idiopathic pulmonary fibrosis (IPF) is an irreversible lung condition that progresses over time, which ultimately results in respiratory failure and mortality. In this study, we found that PLAC8 was downregulated in the lungs of IPF patients based on GEO data, in bleomycin (BLM)-induced lungs of mice, and in primary murine alveolar epithelial type II (pmATII) cells and human lung epithelial cell A549 cells. Overexpression of PLAC8 facilitated autophagy and inhibited apoptosis of pmATII cells and A549 cells in vitro.
View Article and Find Full Text PDFCircZMYM2 Alleviates TGF-β1-Induced Proliferation, Migration and Activation of Fibroblasts via Targeting miR-199b-5p/KLF13 Axis.
Appl Biochem Biotechnol
January 2025
Department of Respiratory and Critical Care Medicine, Tianjin Medical University General Hospital Affiliated to Tianjin Medical University, No.154 Heping Road to Anshan, Tianjin City, 300052, People's Republic of China.
Dysregulated circular RNAs (circRNAs) has been revealed to be involved in pulmonary fibrosis progression. Herein, this study focused on exploring the function and mechanism of circRNA Zinc Finger MYM-Type Containing 2 (circZMYM2) on idiopathic pulmonary fibrosis (IPF) using transforming growth factor (TGF)-β1-stimulated fibroblasts. Human fibroblast cell lines IMR-90 and HFL1 were stimulated with TGF-β1 to mimic fibrosis condition in vitro.
View Article and Find Full Text PDFSurvival and early outcomes following lung transplantation for interstitial lung disease associated with non-scleroderma connective tissue disease: a national cohort study.
Clin Exp Rheumatol
January 2025
Department of Organ Transplantation, and Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease and National Clinical Research Center for Respiratory Disease, Guangzhou, China.
Objectives: The progressive decline in interstitial lung disease associated with non-scleroderma connective tissue disease (ILD-NSCTD) is linked to poor prognosis and frequently results in respiratory failure. Lung transplantation (LTx) offers a viable treatment option, yet its outcomes in ILD-NSCTD remain contentious, particularly across different subtypes.
Methods: This retrospective cohort study included patients with idiopathic pulmonary fibrosis (IPF) (n=11,610) and ILD-NSCTD (n=610) listed in the United Network for Organ Sharing (UNOS) database who underwent lung transplantation between May 5, 2005, and December 31, 2022.
Regulatory T Cell Phenotype Related to Cytokine Expression Patterns in Post-COVID-19 Pulmonary Fibrosis and Idiopathic Pulmonary Fibrosis.
Immun Inflamm Dis
January 2025
Department of Medical and Surgical Sciences & Neurosciences, Respiratory Diseases Unit, Siena University Hospital, Siena, Tuscany, Italy.
Background: Post-coronavirus disease 19 lung fibrosis (PCLF) shares common immunological abnormalities with idiopathic pulmonary fibrosis (IPF), characterized by an unbalanced cytokine profile being associated with the development of lung fibrosis. The aim of the present study was to analyze and compare the different subsets of CD4- and CD8-T cells, along with specific cytokine expression patterns, in peripheral blood (PB) from patients affected by PCLF and IPF and healthy controls (HCs).
Methods: One-hundred patients followed at the Rare Lung Disease Center of Siena University Hospital were enrolled.
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