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Open AccessReview

Role of Apoptotic Cell Clearance in Pneumonia and Inflammatory Lung Disease

1
Department of Microbiology and Immunology, Center for Human Immunology, The University of Western Ontario, London, ON N0M 2N0, Canada
2
Robarts Research Institute, London, ON N6A 5K8, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: Gyorgy Fejer
Pathogens 2021, 10(2), 134; https://doi.org/10.3390/pathogens10020134
Received: 14 December 2020 / Revised: 25 January 2021 / Accepted: 26 January 2021 / Published: 29 January 2021
(This article belongs to the Collection Immunological Responses and Immune Defense Mechanism)
Pneumonia and inflammatory diseases of the pulmonary system such as chronic obstructive pulmonary disease and asthma continue to cause significant morbidity and mortality globally. While the etiology of these diseases is highly different, they share a number of similarities in the underlying inflammatory processes driving disease pathology. Multiple recent studies have identified failures in efferocytosis—the phagocytic clearance of apoptotic cells—as a common driver of inflammation and tissue destruction in these diseases. Effective efferocytosis has been shown to be important for resolving inflammatory diseases of the lung and the subsequent restoration of normal lung function, while many pneumonia-causing pathogens manipulate the efferocytic system to enhance their growth and avoid immunity. Moreover, some treatments used to manage these patients, such as inhaled corticosteroids for chronic obstructive pulmonary disease and the prevalent use of statins for cardiovascular disease, have been found to beneficially alter efferocytic activity in these patients. In this review, we provide an overview of the efferocytic process and its role in the pathophysiology and resolution of pneumonia and other inflammatory diseases of the lungs, and discuss the utility of existing and emerging therapies for modulating efferocytosis as potential treatments for these diseases. View Full-Text
Keywords: efferocytosis; apoptosis; alveolar macrophages; pneumonia; inflammation; specialized pro-resolving mediators efferocytosis; apoptosis; alveolar macrophages; pneumonia; inflammation; specialized pro-resolving mediators
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MDPI and ACS Style

Zheng, D.J.; Abou Taka, M.; Heit, B. Role of Apoptotic Cell Clearance in Pneumonia and Inflammatory Lung Disease. Pathogens 2021, 10, 134. https://doi.org/10.3390/pathogens10020134

AMA Style

Zheng DJ, Abou Taka M, Heit B. Role of Apoptotic Cell Clearance in Pneumonia and Inflammatory Lung Disease. Pathogens. 2021; 10(2):134. https://doi.org/10.3390/pathogens10020134

Chicago/Turabian Style

Zheng, David J.; Abou Taka, Maria; Heit, Bryan. 2021. "Role of Apoptotic Cell Clearance in Pneumonia and Inflammatory Lung Disease" Pathogens 10, no. 2: 134. https://doi.org/10.3390/pathogens10020134

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