Borrelia burgdorferi persists in the brain in chronic lyme neuroborreliosis and may be associated with Alzheimer disease
Abstract
The cause, or causes, of the vast majority of Alzheimer's disease cases are unknown. A number of contributing factors have been postulated, including infection. It has long been known that the spirochete Treponema pallidum, which is the infective agent for syphilis, can in its late stages cause dementia, chronic inflammation, cortical atrophy and amyloid deposition. Spirochetes of unidentified types and strains have previously been observed in the blood, CSF and brain of 14 AD patients tested and absent in 13 controls. In three of these AD cases spirochetes were grown in a medium selective for Borrelia burgdorferi. In the present study, the phylogenetic analysis of these spirochetes was made. Positive identification of the agent as Borrelia burgdorferi sensu stricto was based on genetic and molecular analyses. Borrelia antigens and genes were co-localized with beta-amyloid deposits in these AD cases. The data indicate that Borrelia burgdorferi may persist in the brain and be associated with amyloid plaques in AD. They suggest that these spirochetes, perhaps in an analogous fashion to Treponema pallidum, may contribute to dementia, cortical atrophy and amyloid deposition. Further in vitro and in vivo studies may bring more insight into the potential role of spirochetes in AD.
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B. burgdorferi form spirochete colonies that are similar in their appearance to senile plaques.
“B. burgdorferi form spirochete colonies that are similar in their appearance to senile plaques [63].”
From What would it take to prove that a chronic infection is a causal agent in Alzheimer’s disease? (2025) · cites this paper as [63]
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What would it take to prove that a chronic infection is a causal agent in Alzheimer’s disease?
Brutkiewicz, R. R., Cao, W., Morgan, D., Reis, R. S. D., Suryadevara, V., Willette, A. A., Willette, S. A., Wyatt-Johnson, S. K., & Duggan, M. R. (2025) · Trends in Neurosciences · doi:10.1016/j.tins.2025.05.009 · Cited by 3 · see citing works
- Authors
- Miklossy, J., Khalili, K., Gern, L., Ericson, R. L., Darekar, P., Bolle, L., Hurlimann, J., & Paster, B. J.
- Affiliations
- University Institute of Pathology, Division of Neuropathology, University Medical School (CHUV), 1011, Lausanne, Switzerland. and University of British Columbia, Department of Psychiatry, Kinsmen Laboratory of Neurological Research, Vancouver, B.C. V6T 1Z3, Canada
- Temple University (US)
- University of Neuchâtel (CH)
- The Forsyth Institute (US)
- Centre Hospitalier Universitaire Vaudois (CH)
- University of British Columbia (CA)
- Venue
- Journal of Alzheimer's Disease
- Publisher
- SAGE Publications
- Published
- 2005-01-10
- Volume
- 6
- Issue
- 6
- Pages
- 639-649
- ISSN
- 1387-2877 (ISSN-L)
- 1875-8908
- OpenAlex
- W2170025328
- Cited by
- 163
- References
- 1
- Citations by year
- 2026: 4 · 2025: 8 · 2024: 6 · 2023: 6 · 2022: 10 · 2021: 12 · 2020: 19 · 2019: 7 · 2018: 12 · 2017: 7 · 2016: 8 · 2015: 6 · 2014: 7 · 2013: 6 · 2012: 7
- FWCI
- 2.60
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Alzheimer s Disease (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Immunology and Microbiology › Parasitology › Vector-borne infectious diseases
- Health Sciences › Medicine › Physiology › Syphilis Diagnosis and Treatment
- Keywords
- Borrelia burgdorferi, neuroborreliosis
- MeSH terms
- Aged, Aged, 80 and over, Alzheimer Disease, Atrophy, Base Sequence, Brain, Cerebral Cortex, Chronic Disease, Frontal Lobe, Genotype, Humans, RNA, Ribosomal, 16S, Spirochaetales, Blotting, Western, Polymerase Chain Reaction, In Situ Hybridization, DNA Primers, Lyme Neuroborreliosis, Borrelia burgdorferi
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