Do microbes play a role in Alzheimer's disease?

Zoë A. P. Williams, Leonie Lang, Sarah Nicolas, Gerard Clarke, John Cryan, David Vauzour, Yvonne M. Nolan

Research output: Contribution to journalReview articlepeer-review


Alzheimer's disease is a complex and progressive condition that affects essential neurological functions such as memory and reasoning. In the brain, neuronal loss, synaptic dysfunction, proteinopathy, neurofibrillary tangles, and neuroinflammation are the hallmarks of Alzheimer's disease pathophysiology. In addition, recent evidence has highlighted that microbes, whether commensal or pathogenic, also have the ability to interact with their host and to regulate its immune system, therefore participating in the exchanges that lead to peripheral inflammation and neuropathology. Because of this intimate relationship, bacteria, viruses, fungi, and protozoa have been implicated in the development of Alzheimer's disease. Here, we bring together current and most recent evidence of the role of microbes in Alzheimer's disease, raising burning questions that need to be addressed to guide therapeutic approaches and potential prophylactic strategies.
Original languageEnglish
Article numbere14462
JournalMicrobial Biotechnology
Issue number4
Early online date9 Apr 2024
Publication statusPublished - Apr 2024

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