期刊
RESPIRATORY INVESTIGATION
卷 60, 期 4, 页码 531-542出版社
ELSEVIER
DOI: 10.1016/j.resinv.2022.04.004
关键词
Acute exacerbation; Idiopathic pulmonary fibrosis; Interstitial lung disease; Lung cancer; Lung injury
RAGE receptor plays a homeostatic role in the lung, but its abnormal binding may lead to lung injury and the occurrence of ILD, including IPF. IPF patients have a poor prognosis, with AE-IPF being one of the main causes of death. ILD is frequently observed in patients with lung cancer, and procedures or chemotherapy may trigger AE-ILD, leading to increased mortality.
The receptor for advanced glycation end product (RAGE) is a transmembrane receptor highly expressed in type 1 pneumocytes of healthy lungs. RAGE is considered to play a homeostatic role in the lung, as RAGE knockout mice develop lung fibrosis as they age. In contrast, RAGE can bind numerous ligands, including high-mobility group box 1 (HMGB1). These interactions initiate pro-inflammatory signaling associated with the pathogenesis of lung injury and interstitial lung disease (ILD), including idiopathic pulmonary fibrosis (IPF). ILD is a broad category of diffuse parenchymal lung disease characterized by various extents of lung fibrosis and inflammation, and IPF is a common and progressive ILD of unknown cause. The prognosis of patients with IPF is poor, and acute exacerbation of IPF (AE-IPF) is one of the main causes of death. Recent reports indicate that acute exacerbations can occur in other ILDs (AE-ILD). Notably, ILD is frequently observed in patients with lung cancer, and AE-ILD after surgical procedures or the initiation of chemotherapy for concomitant lung cancer are clinically important due to their association with increased mortality. In this review, we summarize the associations of RAGE/soluble RAGE (sRAGE)/RAGE ligands with the pathogenesis and clinical course of ILD, including IPF and AE-IPF. Additionally, the potential use of sRAGE and RAGE ligands as predictive markers of AE-IPF and cancer treatment-triggered AE-ILD is also discussed. (C) 2022 The Japanese Respiratory Society. Published by Elsevier B.V. All rights reserved.
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