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Systemic inflammation and disease progression in Alzheimer disease
Open accessAbstract
BACKGROUND: Acute and chronic systemic inflammation are characterized by the systemic production of the proinflammatory cytokine tumor necrosis factor alpha (TNF-alpha) that plays a role in immune to brain communication. Previous preclinical research shows that acute systemic inflammation contributes to an exacerbation of neurodegeneration by activation of primed microglial cells. OBJECTIVE: To determine whether acute episodes of systemic inflammation associated with increased TNF-alpha would be associated with long-term cognitive decline in a prospective cohort study of subjects with Alzheimer disease. METHODS: Three hundred community-dwelling subjects with mild to severe Alzheimer disease were cognitively assessed, and a blood sample was taken for systemic inflammatory markers. Each subject's main caregiver was interviewed to assess the presence of incident systemic inflammatory events. Assessments of both patient and caregiver were repeated at 2, 4, and 6 months. RESULTS: Acute systemic inflammatory events, found in around half of all subjects, were associated with an increase in the serum levels of proinflammatory cytokine TNF-alpha and a 2-fold increase in the rate of cognitive decline over a 6-month period. High baseline levels of TNF-alpha were associated with a 4-fold increase in the rate of cognitive decline. Subjects who had low levels of serum TNF-alpha throughout the study showed no cognitive decline over the 6-month period. CONCLUSIONS: Both acute and chronic systemic inflammation, associated with increases in serum tumor necrosis factor alpha, is associated with an increase in cognitive decline in Alzheimer disease.
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“Systemic inflammation induced by the activation of Toll-like receptors (TLRs) and inflammatory mediators such as TNFα has been suggested to cause cognitive decline and accelerate the progression of Alzheimer’s disease (Squillace and Salvemini 2022; Holmes et al. 2009).”
From Astrocyte-specific inhibition of the primary cilium suppresses C3 expression in reactive astrocyte (2024) · cites this paper as Holmes et al. 2009
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“which is accelerated by systemic infections, including gum disease.”
From The endotoxin hypothesis of neurodegeneration (2019) · cites this paper as [73]
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“For example, systemic infections accelerate cognitive decline in Alzheimer’s disease patients [73]”
From The endotoxin hypothesis of neurodegeneration (2019) · cites this paper as [73]
In the citing paper
“Some studies have reported inflammatory challenges as an associated risk factor for the development of dementia-related symptoms, as they show increased pro-inflammatory cytokines levels [147, 148].”
From Brain-Derived Neurotrophic Factor in Brain Disorders: Focus on Neuroinflammation (2019) · cites this paper as [148]
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Solana, C., Tarazona, R., & Solana, R. (2018) · International Journal of Alzheimer s Disease · doi:10.1155/2018/3128758 · Cited by 79
“Thus, high levels of tumour necrosis factor (TNF)-α in sera was associated with a 4-fold increase in the rate of cognitive decline [33].”
BackgroundCD74 interacts with APP and suppresses the production of Aβ
Matsuda, S., Matsuda, Y., & D'adamio, L. (2009) · Molecular Neurodegeneration · doi:10.1186/1750-1326-4-41 · Cited by 79
“Given the anti-amyloidogenic activity of CD74, it is possible that the increased levels of CD74 in AD brains, potentially caused by increased TNFα in AD patients and in transgenic mouse over expressing APP [41-43], could contribute to a negative feedback mechanism of the organism to fend off noxious APP processing up…”
BackgroundHopperton, K. E., Trépanier, M., Giuliano, V., & Bazinet, R. P. (2016) · Journal of Neuroinflammation · doi:10.1186/s12974-016-0721-5 · Cited by 85
“(TNF)-α is associated with cognitive decline [8].”
Systemic infection exacerbates cerebrovascular dysfunction in Alzheimer’s disease
Asby, D. J., Boche, D., Allan, S. M., Love, S., & Miners, J. S. (2021) · Brain · doi:10.1093/brain/awab094 · Cited by 83
“Systemic infection is a risk factor for progression of Alzheimer’s disease(4,5) and systemic infection and cognitive decline in Alzheimer’s disease are associated with raised serum IL-1b(6) and TNF-a.(7) Modelling of acute systemic infection in rodents induces microglial activation and elevated pro-inflammatory cytoki…”
BackgroundThe influence of cannabinoids on generic traits of neurodegeneration
Fagan, S. G., & Campbell, V. A. (2013) · British Journal of Pharmacology · doi:10.1111/bph.12492 · Cited by 78
Bone Marrow Transplantation Confers Modest Benefits in Mouse Models of Huntington's Disease
Kwan, W., Magnusson, A., Chou, A., Adame, A., Carson, M. J., Kohsaka, S., Masliah, E., Möller, T., Ransohoff, R., Tabrizi, S. J., et al. (2012) · The Journal of Neuroscience · doi:10.1523/jneurosci.4846-11.2012 · Cited by 75
“A recent study showed that acute and chronic systemic inflammation, associated with increases in serum TNF- , is associated with an increase in cognitive decline in AD (Holmes et al., 2009), and, based on our results, we would predict similar findings in HD patients.”
Pellicanò, M., Bulati, M., Buffa, S., Barbagallo, M., Di Prima, A., Misiano, G., Picone, P., Di Carlo, M., Nuzzo, D., Candore, G., et al. (2010) · Journal of Alzheimer's Disease · doi:10.3233/jad-2010-091714 · Cited by 86
Fajardo, V. A., Fajardo, V. A., LeBlanc, P. J., & MacPherson, R. E. K. (2017) · Journal of Alzheimer s Disease · doi:10.3233/jad-170744 · Cited by 78
Skelly, D. T., Hennessy, E., Dansereau, M.-A., & Cunningham, C. (2013) · PLoS ONE · doi:10.1371/annotation/90c76048-2edd-4315-8404-4d9d8cbd411e · Cited by 77
Self-citationTREM2 expression in the human brain: a marker of monocyte recruitment?
Fahrenhold, M., Rakić, S., Classey, J. D., Brayne, C., Ince, P. G., Nicoll, J. A. R., Boche, D., & MRC‐CFAS (2017) · Brain Pathology · doi:10.1111/bpa.12564 · Cited by 74
“In clinical studies, the presence of systemic infection and inflammation, with raised peripheral pro-inflammatory cytokines, was associated with a marked increase in the rate of long-term cognitive decline and the neuropsychiatric features typical of sickness behavior in AD patients (14, 15, 18).”
BackgroundCreutzfeldt-Jakob disease in a man with COVID-19: SARS-CoV-2-accelerated neurodegeneration?
Young, M. J., O’Hare, M., Matiello, M., & Schmahmann, J. D. (2020) · Brain Behavior and Immunity · doi:10.1016/j.bbi.2020.07.007 · Cited by 77
The intestinal microbiome and Alzheimer's disease: A review
Li, Z., Zhu, H., Zhang, L., & Qin, C. (2018) · Animal Models and Experimental Medicine · doi:10.1002/ame2.12033 · Cited by 78
“inflammation are associated with an increase in cognitive decline in AD patients.(44) The classical pro‐inflammatory cytokine tumor necrosis factor α (TNF‐α) is produced by microglia and is an early cellular marker of AD pathology, and has also been shown to induce neuronal cell cycle events.”
BackgroundAiello, A. E., Chiu, Y.-L., & Frasca, D. (2017) · GeroScience · doi:10.1007/s11357-017-9983-9 · Cited by 73
Cognitive decline in heart failure
Alagiakrishnan, K., Mah, D., Ahmed, A., & Ezekowitz, J. A. (2016) · Heart Failure Reviews · doi:10.1007/s10741-016-9568-1 · Cited by 77
Efficacy and mechanism of cGAMP to suppress Alzheimer’s disease by elevating TREM2
Xu, Q., Xu, W., Cheng, H., Yuan, H., & Tan, X. (2019) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2019.07.004 · Cited by 75
Protective effect of antirheumatic drugs on dementia in rheumatoid arthritis patients
Judge, A., Garriga, C., Arden, N., Lovestone, S., Prieto‐Alhambra, D., Cooper, C. C., & Edwards, C. J. (2017) · Alzheimer s & Dementia Translational Research & Clinical Interventions · doi:10.1016/j.trci.2017.10.002 · Cited by 77
“There is also an association between the levels of cytokines important in the pathogenesis of RA, such as tumor necrosis factor-a or interleukin-10, and progression of dementia [8,31,32].”
BackgroundNeuroinflammatory Signaling in the Pathogenesis of Alzheimer’s Disease
Uddin, M. S., Kabir, M. T., Jalouli, M., Rahman, M. A., Jeandet, P., Behl, T., Alexiou, A. T., Albadrani, G. M., Abdel‐Daim, M. M., Perveen, A., et al. (2021) · Current Neuropharmacology · doi:10.2174/1570159x19666210826130210 · Cited by 76
“The modulation of neurodegenerative disorders via certain immune molecules as reported in preclinical studies as well as the upregulation of inflammatory genes in tissues derived from individuals with CNS diseases, indicate a link between neurodegeneration including AD and inflammation and suggest the early involvemen…”
BackgroundForebrain Cholinergic Signaling Regulates Innate Immune Responses and Inflammation
Lehner, K., Silverman, H. A., Addorisio, M. E., Roy, A., Al‐Onaizi, M., Levine, Y. A., Olofsson, P. S., Chavan, S. S., Gros, R., Nathanson, N. M., et al. (2019) · Frontiers in Immunology · doi:10.3389/fimmu.2019.00585 · Cited by 72
“Intriguingly, increased peripheral TNF and other pro-inflammatory cytokine levels have been found in Alzheimer’s disease (55), and peripheral inflammation has been linked to exacerbation of brain pathogenesis and neurodegeneration, affecting cholinergic neurons (56, 57).”
BackgroundInitiative, A. D. N., Bawa, K. K., Krance, S. H., Herrmann, N., Cogo‐Moreira, H., Ouk, M., Yu, D., Wu, C., Black, S. E., Lanctôt, K. L., et al. (2020) · Journal of Neuroinflammation · doi:10.1186/s12974-020-01750-3 · Cited by 72
Cholinergic Modulation of the Immune System in Neuroinflammatory Diseases
Reale, M., & Costantini, E. (2021) · Diseases · doi:10.3390/diseases9020029 · Cited by 76
“Increased levels of circulating pro-inflammatory cytokines, such as IL-1α, IL-1β, IL-6, and TNF-α, complement and the presence of activated microglia, have been described in patients with AD, and a direct correlation has been established between Aβ-induced neurotoxicity and cytokine production, and between AD progress…”
BackgroundCFH Variants Affect Structural and Functional Brain Changes and Genetic Risk of Alzheimer’s Disease
Initiative, A. D. N., Zhang, D., Li, J., Wu, H., Cui, Y. J., Bi, R., Zhou, H., Wang, H.-Z., Zhang, C., Wang, D., et al. (2015) · Neuropsychopharmacology · doi:10.1038/npp.2015.232 · Cited by 73
“It is now known that Aβ plaques and local inflammation are central to the pathogenesis of AD (Kamer, 2010; Wyss-Coray, 2006).”
BackgroundLin, T., Chen, W., Sheu, J., Chen, Y., Chen, J., & Chang, C. (2018) · PLoS ONE · doi:10.1371/journal.pone.0186475 · Cited by 73
Quintessential Risk Factors: Their Role in Promoting Cognitive Dysfunction and Alzheimer’s Disease
Daulatzai, M. A. (2012) · Neurochemical Research · doi:10.1007/s11064-012-0854-6 · Cited by 70
Derk, J., MacLean, M., Juranek, J., & Schmidt, A. M. (2018) · Journal of Alzheimer’s Disease & Parkinsonism · doi:10.4172/2161-0460.1000421 · Cited by 96
“Altogether, these findings underscore a potentially profound link between peripheral and central inflammation, which prompts the question: to what extent might anti-AGE/RAGE therapies provide protective measures for neurodegeneration and AD, given the prominence of cellular stress driven by increased RAGE ligand burde…”
BackgroundCulley, D. J., Snayd, M., Baxter, M. G., Xie, Z., Lee, I. H., Rudolph, J. L., Inouye, S. K., Marcantonio, E. R., & Crosby, G. J. (2014) · Frontiers in Aging Neuroscience · doi:10.3389/fnagi.2014.00107 · Cited by 70
“…hippocampally mediated cognitive tests in intact animals and are elevated in the brain of patients suffering from dementia (Tancredi et al., 2000; Vereker et al., 2000; Barrientos et al., 2006; Neri et al., 2006; Sparkman et al., 2006; Holmes et al., 2009; Nelson et al., 2011; Westin et al., 2012).”
BackgroundCerejeira, J., Lagarto, L., & Mukaetova‐Ladinska, E. B. (2014) · NeuroImmunoModulation · doi:10.1159/000356526 · Cited by 72
Reelin through the years: From brain development to inflammation
Alexander, A., Herz, J., & Calvier, L. (2023) · Cell Reports · doi:10.1016/j.celrep.2023.112669 · Cited by 76
Resveratrol effects on astrocyte function: Relevance to neurodegenerative diseases
Wight, R. D., Tull, C. A., Deel, M. W., Stroope, B. L., Eubanks, A. G., Chavis, J. A., Drew, P. D., & Hensley, L. L. (2012) · Biochemical and Biophysical Research Communications · doi:10.1016/j.bbrc.2012.08.045 · Cited by 69
“More recent studies suggest a potential link between high serum levels of CRP with the presence and severity of AD [21] and PD [22–24], suggesting a role of CRP in the pathogenesis of neurodegenerative diseases.”
Anesthesia, surgery, illness and Alzheimer's disease
Eckenhoff, R. G., & Laudansky, K. F. (2012) · Progress in Neuro-Psychopharmacology and Biological Psychiatry · doi:10.1016/j.pnpbp.2012.06.011 · Cited by 68
“In another recent example, serum levels of the proinflammatory cytokines TNFα and IL-6, measured during a variety of infectious episodes, correlated with both the rate and extent of cognitive decline and in older patients over a 6 month period (Holmes et al., 2009, 2011).”
Adipose Tissue Inflammation Induces B Cell Inflammation and Decreases B Cell Function in Aging
Frasca, D., & Blomberg, B. B. (2017) · Frontiers in Immunology · doi:10.3389/fimmu.2017.01003 · Cited by 66
“org August 2017 | Volume 8 | Article 1003 Aging is characterized by “inflamm-aging” (23), a low-grade chronic inflammation, which is a risk factor for morbidity and mortality of elderly individuals as it is implicated in the pathogenesis of several disabling diseases of the elderly such as type-2 diabetes mellitus (24…”
Background
Metadata
- Authors
- Holmes, C., Cunningham, C., Zotova, E., Woolford, J., Dean, C., Kerr, S., Culliford, D., & Perry, V. H.
- Affiliations
- Trinity College Dublin (IE)
- Venue
- Neurology
- Published
- 2009-09-08
- Volume
- 73
- Issue
- 10
- Pages
- 768-774
- ISSN
- 0028-3878 (ISSN-L)
- 1526-632X
- PMC
- PMC2848584
- OpenAlex
- W2085558085
- Semantic Scholar
- cbac9326b978c2365dec0a3f265816a795105bb1
- Cited by
- 1,139
- References
- 42
- Citations by year
- 2026: 48 · 2025: 68 · 2024: 85 · 2023: 75 · 2022: 77 · 2021: 87 · 2020: 84 · 2019: 89 · 2018: 71 · 2017: 71 · 2016: 59 · 2015: 67 · 2014: 57 · 2013: 55 · 2012: 58
- FWCI
- 29.59
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Neurology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- ePrints Soton (University of Southampton) (submittedVersion)
- Funders
- Wellcome Trust (078300)
- National Institute for Health and Care Research
- National Institutes of Health (5rc2ag036502-02)
- Biotechnology and Biological Sciences Research Council
- National Institute on Aging (R01AG012101)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
- Keywords
- Alzheimer's disease, systemic inflammation, TNF-α, cognitive decline, disease progression, neuroinflammation, microglial activation, inflammatory cytokines, serum biomarkers
- MeSH terms
- Acute Disease, Aged, Aged, 80 and over, Alzheimer Disease, Chronic Disease, Cognition Disorders, Female, Follow-Up Studies, Humans, Male, Prospective Studies, Retrospective Studies, Tumor Necrosis Factor-alpha, Cohort Studies, Biomarkers, Disease Progression, Inflammation Mediators
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