Aug 29, 2013

Cellular senescence in normal and premature lung aging

Zeitschrift für Gerontologie und Geriatrie
B Bartling

Abstract

The incidence of chronic respiratory diseases (e.g., chronic obstructive pulmonary disease, COPD) and interstitial lung diseases (e.g., pneumonia and lung fibrosis) increases with age. In addition to immune senescence, the accumulation of senescent cells directly in lung tissue might play a critical role in the increased prevalence of these pulmonary diseases. In the last couple of years, detailed studies have identified the presence of senescent cells in the aging lung and in diseased lungs of patients with COPD and lung fibrosis. Cellular senescence has been shown for epithelial cells of bronchi and alveoli as well as mesenchymal and vascular cells. Known risk factors for pulmonary diseases (cigarette smoke, air pollutions, bacterial infections, etc.) were identified in experimental studies as being possible mediators in the development of cellular senescence. The present findings indicate the importance of cellular senescence in normal lung aging and in premature aging of the lung in patients with COPD, lung fibrosis, and probably other respiratory diseases.

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Citations

Mentioned in this Paper

Cell Aging
Lung
Squamous Transitional Epithelial Cell Count
Blood Vessel
Pulmonary Fibrosis
Senility
Bronchi
COPD pharmacologic substance
Senescence Function
Respiratory Tract Infections

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