Cited by 70Interstitial Lung Diseases and Idiopathic Pulmonary FibrosisRenin-Angiotensin System StudiesSystemic Sclerosis and Related Diseases

Chronic Activation of the Renin-Angiotensin System Induces Lung Fibrosis

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Wang, Jiaolong, Chen, Li, Chen, Bohao, Meliton, Angelo, Liu, Shu Q., Shi, Yongyan, Liu, Tianjing, Deb, Dilip K. +2 more·2015·Scientific Reports

Abstract

Pulmonary fibrosis is a serious lung disorder that can lead to respiratory failure. Here we show that transgenic mice expressing active renin from the liver (RenTgMK) developed progressive pulmonary fibrosis leading to impaired pulmonary function. Histological analyses revealed a marked increase in extracellular matrix (ECM) deposition and decrease in alveolar size in the lungs of RenTgMK mice compared to wild-type (WT) littermates, accompanied with increased expression of ECM proteins and fibrogenic factors. The increase in lung fibrosis led to a substantial decrease in respiratory system compliance. Two-week treatment with aliskiren (renin inhibitor) or losartan (AT1 antagonist) ameliorated pulmonary ECM deposition, blocked the induction of ECM proteins and fibrogenic factors and improved respiratory compliance in RenTgMK mice, confirming a critical role of the renin-Ang II-AT1 cascade in promoting pulmonary fibrogenesis. However, when RenTgMK mice were treated with hydralazine (a smooth muscle relaxant), the blood pressure was normalized but the lung fibrotic abnormalities, fibrogenic gene induction and pulmonary elasticity were not corrected. Moreover, intratracheal instillation of lipopolysaccharide induced more severe lung injury in RenTgMK mice compared to WT littermates. These observations demonstrate that the renin-angiotensin system is a key mediator of lung fibrosis and its pro-fibrotic effect is independent of blood pressure.

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Authors
Wang, J., Chen, L., Chen, B., Meliton, A., Liu, S. Q., Shi, Y., Liu, T., Deb, D. K., Solway, J., & Chun Li, Y.
Affiliations
  • University of Chicago (US)
  • Sheng Jing Hospital (CN)
  • Northwestern University (US)
Venue
Scientific Reports
Published
2015-10-23
Volume
5
Issue
1
Pages
15561-15561
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2410545784
Cited by
70
References
34
Citations by year
2026: 1 · 2025: 6 · 2024: 7 · 2023: 9 · 2022: 2 · 2021: 11 · 2020: 15 · 2019: 8 · 2018: 6 · 2017: 4 · 2016: 1
FWCI
2.90
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Georgia Clinical and Translational Science Alliance
  • National Institutes of Health (UL1TR000430)
  • National Cancer Institute (R01CA180087)
  • National Center for Advancing Translational Sciences
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Systemic Sclerosis and Related Diseases
Keywords
pulmonary fibrosis, renin-angiotensin system, angiotensin II, angiotensin II type 1 receptor, aliskiren, losartan, hydralazine, extracellular matrix deposition, fibrogenic factors, respiratory compliance, lipopolysaccharide-induced lung injury, transgenic mice, renin overexpression
MeSH terms
Angiotensin II, Animals, Hypertension, Mice, Transgenic, Pulmonary Fibrosis, Renin-Angiotensin System, Disease Progression, Receptor, Angiotensin, Type 2, Mice

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