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Porphyromonas gingivalis and Alzheimer disease: Recent findings and potential therapies. | LitMetric

Porphyromonas gingivalis and Alzheimer disease: Recent findings and potential therapies.

J Periodontol

Division of Periodontology, Department of Orofacial Sciences School of Dentistry, University of California, San Francisco, CA.

Published: October 2020

AI Article Synopsis

Article Abstract

Epidemiological studies have identified an association between periodontitis and Alzheimer disease (AD); however, the nature of this association has been unclear. Recent work suggests that brain colonization by the periodontal pathogen Porphyromonas gingivalis may link these two inflammatory and degenerative conditions. Evidence of P. gingivalis infiltration has been detected in autopsy specimens from the brains of people with AD and in cerebrospinal fluid of individuals diagnosed with AD. Gingipains, a class of P. gingivalis proteases, are found in association with neurons, tau tangles, and beta-amyloid in specimens from the brains of individuals with AD. The brains of mice orally infected with P. gingivalis show evidence of P. gingivalis infiltration, along with various neuropathological hallmarks of AD. Oral administration of gingipain inhibitors to mice with established brain infections decreases the abundance of P. gingivalis DNA in brain and mitigates the neurotoxic effects of P. gingivalis infection. Thus, gingipain inhibition could provide a potential approach to the treatment of both periodontitis and AD.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7689719PMC
http://dx.doi.org/10.1002/JPER.20-0104DOI Listing

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