The role of autophagy in the pathogenesis of periodontal disease

Abstract

Periodontal disease is a chronic inflammatory disease leading to destruction of periodontal tissues. As a local inflammation, periodontopathic bacterium, pro‐inflammatory mediators and local immune response play pivotal role in the progress of periodontal disease. Besides, cigarette smoke has long been associated with periodontal disease and tooth loss. Autophagy is an intracellular degradation process highly conserved from yeast to humans. As a lysosomal degradation pathway of self‐digestion, it is critical for maintaining cells homeostasis and development. The role of autophagy has been investigated in oral diseases, such as oral cancer, periapical lesions, and oral candidiasis. Recently, increasing studies investigated the role of autophagy in periodontal disease. In this review, we try to illustrate the effect of autophagy on periodontal disease pathogenesis from 5 aspects: autophagy affects the intracellular infection and survival of bacteria; autophagy has an interaction with periodontal inflammation; autophagy is pivotal in periodontal cells biology and periodontal tissues destruction and reconstruction; autophagy can be induced by cigarette smoke; last but not least, autophagy may affect periodontal disease via endoplasmic reticulum stress.

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