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Updated: Sep 9, 2025

Unilateral Lung Volume Analysis Using Micro-CT for Enhanced Assessment of Pulmonary Fibrosis in Preclinical Models
Published on: June 20, 2025
Breathless Aftermath: Post-COVID-19 Pulmonary Fibrosis
Dharanya Muthiah1,2, Kishore Vaddadi1,2, Lin Liu1,2
1Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74074, USA.
Long COVID can cause persistent lung scarring, known as post-COVID-19 pulmonary fibrosis. This review explores its mechanisms, diagnosis, and potential treatments for better patient outcomes.
Area of Science:
- Pulmonology
- Infectious Diseases
- Pathology
Background:
- Post-Acute Sequelae of SARS-CoV-2 infection (PASC), or long COVID, affects many individuals post-recovery.
- Post-COVID-19 pulmonary fibrosis (PC19-PF) is a severe long COVID complication causing progressive lung scarring and chronic respiratory issues.
- The pathogenesis of PC19-PF is not well understood, hindering effective treatment development.
Purpose of the Study:
- To provide a comprehensive review of post-COVID-19 pulmonary fibrosis (PC19-PF).
- To elucidate the epidemiology, clinical features, diagnostic methods, and underlying mechanisms of PC19-PF.
- To explore shared pathways with other fibrotic lung diseases and discuss emerging therapeutic strategies.
Main Methods:
- Literature review of clinical and experimental studies on PC19-PF.
- Analysis of epidemiological data and clinical manifestations.
- Synthesis of mechanistic insights and therapeutic approaches.
Main Results:
- PC19-PF presents as progressive lung scarring, leading to chronic respiratory impairment.
- Understanding shared fibrotic pathways may offer novel therapeutic targets.
- Emerging strategies aim to address the underlying mechanisms of PC19-PF.
Conclusions:
- PC19-PF is a significant and severe long-term complication of COVID-19.
- Further research into PC19-PF pathogenesis is crucial for developing effective treatments.
- Consolidating current knowledge can guide the development of mechanism-based therapies for lung fibrosis.
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