Which infectious agents may increase the risk for Alzheimer disease (AD)?

Updated: May 09, 2019
  • Author: Shaheen E Lakhan, MD, PhD, MS, MEd; Chief Editor: Jasvinder Chawla, MD, MBA  more...
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An emerging field of research suggests a significant association between AD and chronic infection with various species of spirochetes, including the periodontal pathogen Treponemas and Borrelia burgdorferi, as well as pathogens such as herpes simplex virus type 1. [49] In vitro and animal studies support the concept of infection resulting in chronic inflammation and neuronal destruction. Ab has been shown to be an antimicrobial peptide, so its accumulation might represent a response to infection.

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