Role of periodontal pathogens in atherosclerotic plaque development and progression: An overview

Rao, Amita and Kumar, Ballamoole Krishna (2023) Role of periodontal pathogens in atherosclerotic plaque development and progression: An overview. ACTA MICROBIOLOGICA ET IMMUNOLOGICA HUNGARICA, 70 (4). pp. 272-277. ISSN 1217-8950

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Abstract

Atherosclerosis is a progressive disease marked by the accumulation of lipids and fibrous components in the large arteries. It is one of the primary causes of heart disease and stroke. Periodontal diseases encompass conditions like gingivitis and periodontitis, which are multifactorial diseases associated with dysbiotic plaque biofilms that trigger an immune-inflammatory host response, eventually resulting in the destruction of periodontal tissues. Links between periodontal disease and atherosclerosis may be based on direct invasion of periodontal pathogens or inflammatory mechanisms triggered by bacteria related to periodontal lesions, locally or systemically, that may impact the initiation of the atherosclerotic lesion. The presence of periodontal pathogens within an atheromatous lesion implies hematogenous dissemination. The invasion of atheroma by periodontal pathogens results in changes in the proatherogenic and proinflammatory properties of endothelial cells, leading to endothelial dysfunction, which is a hallmark of atherosclerosis. Clinical and epidemiological studies have offered sufficient evidence of periodontitis having an adverse effect on systemic health, including atherosclerosis; however, a direct causal effect has not yet been proved. This review aims to analyse scientific results regarding the mechanism by which periodontal pathogens may cause atherosclerosis as well as to describe the role of Porphyromonas gingivalis in atherosclerotic plaque development and progression.

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