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Intrathecal inflammation precedes development of Alzheimer's disease
Open accessAbstract
OBJECTIVES: To analyse the cerebrospinal fluid (CSF) values of the proinflammatory cytokines, interleukin 1beta (IL1beta), tumour necrosis factor alpha (TNFalpha), GM-CSF, of the anti-inflammatory cytokine TGFbeta, of tau protein, a marker for neurodegeneration, and of beta amyloid (Abeta), a protein involved in the formation of senile plaques, in prospectively followed up patients with mild cognitive impairment (MCI). METHODS: Analyses of CSF levels of TNFalpha, IL1beta, GM-CSF, TGFbeta, betaa, and tau protein were performed using ELISA in 56 patients with MCI who were followed up prospectively and in 25 age matched, healthy controls. RESULTS: Patients with MCI displayed significantly higher levels of TNFalpha and tau protein and significantly lower levels of TGFbeta and Abeta compared with the healthy controls. After nine months of follow up, 25 patients still displayed MCI while the remaining 31 patients had progressed to Alzheimer's disease (AD). Only MCI patients who progressed to AD at follow up, showed significantly higher CSF levels of TNFalpha than controls. In addition, reduced CSF-Abeta42 levels were only found in MCI patients that progressed to AD, further supporting the notion that disturbed metabolism of Abeta is an early finding in AD. CONCLUSIONS: These results demonstrate increased production of the proinflammatory cytokine, TNFalpha and decreased production of the anti-inflammatory cytokine TGFbeta in patients with MCI at risk to develop AD, suggesting a propensity towards inflammation in this patient group and indicating that CNS inflammation is a early hallmark in the pathogenesis of AD.
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“TNF-α levels were also found to be elevated in the CSF of AD patients and correlate with disease progression [145, 146].”
From Glial contributions to neurodegeneration in tauopathies (2017) · cites this paper as [146]
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Needham, H., Torpey, G., Flores, C. C., Davis, C. J., Vanderheyden, W. M., & Gerstner, J. R. (2022) · Frontiers in Neuroscience · doi:10.3389/fnins.2022.798994 · Cited by 29
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Martínez‐Mármol, R., Mohannak, N., Qian, L., Wang, T., Gormal, R. S., Ruitenberg, M. J., Vanhaesebroeck, B., Coulson, E. J., & Meunier, F. A. (2019) · Journal of Neuroscience · doi:10.1523/jneurosci.0674-19.2019 · Cited by 27
“, 1991) and CSF (Tarkowski et al., 2003) of patients with AD, we found that the brain level of TNF was increased in APP/PS1 mice.”
BackgroundInfluentialCalderón-Garcidueñas, L., Mora-Tiscareño, A., Gómez-Garza, G., Carrasco-Portugal, M. D. C., Pérez-Guillé, B., Flores-Murrieta, F. J., Pérez-Guillé, G., Osnaya, N., Juárez-Olguín, H., Monroy, M. E., et al. (2009) · Toxicologic Pathology · doi:10.1177/0192623309340277 · Cited by 28
Neuroimmune nexus of depression and dementia: Shared mechanisms and therapeutic targets
Herman, F. J., Simkovic, S. J., & Pasinetti, G. M. (2019) · British Journal of Pharmacology · doi:10.1111/bph.14569 · Cited by 29
Zheng, C., Fillmore, N. R., Ramos‐Cejudo, J., Brophy, M. T., Osorio, R. S., Gurney, M. E., Qiu, W. Q., Au, R., Perry, G. L., Dubreuil, M., et al. (2021) · Alzheimer s & Dementia · doi:10.1002/alz.12465 · Cited by 28
Alzheimer's disease biomarkers: correspondence between human studies and animal models
Sabbagh, J. J., Kinney, J. W., & Cummings, J. L. (2013) · Neurobiology of Disease · doi:10.1016/j.nbd.2013.04.010 · Cited by 27
“Inconsistent findings have emerged for measures of alternative cytokines such as tumor necrosis factor-α (TNF-α) and transforming growth factor β (TGF-β) (Blasko et al., 2006; Rota et al., 2006; Tarkowski et al., 2003).”
BackgroundForlenza, O. V., Diniz, B. S., Teixeira, A. L., Stella, F., & Gattaz, W. F. (2013) · Brazilian Journal of Psychiatry · doi:10.1590/1516-4446-2012-3505 · Cited by 31
Redox Imbalance as a Common Pathogenic Factor Linking Hearing Loss and Cognitive Decline
Paciello, F., Ripoli, C., Fetoni, A. R., & Grassi, C. (2023) · Antioxidants · doi:10.3390/antiox12020332 · Cited by 27
“Indeed, increased levels of the proinflammatory cytokine TNF-α and decreased levels of the anti-inflammatory cytokine TNF-β have been found in patients with mild cognitive impairment who progressed to AD [196].”
BackgroundBao, M., Bade, R., Liu, H., Tsambaa, B., Shao, G., Borjigidai, A., & Cheng, Y. (2023) · European Journal of Pharmacology · doi:10.1016/j.ejphar.2023.175992 · Cited by 27
Progressive Supranuclear Palsy Syndrome: An Overview
Ichikawa-Escamilla, E., Velasco-Martínez, R. A., & Adalid-Peralta, L. V. (2024) · IBRO Neuroscience Reports · doi:10.1016/j.ibneur.2024.04.008 · Cited by 31
“The notion that neuroinflammation might precede protein aggregation is supported by the higher levels of proinflammatory cytokines such as IL-1 β , TNF-α , and GM CSF in the CSF of patients with mild cognitive impairment (Tarkowski and Andreasen, 2003).”
BackgroundManna, J., Dunbar, G. L., & Maiti, P. (2021) · Antioxidants · doi:10.3390/antiox10060899 · Cited by 26
Jiao, H., & Jia, J. (2021) · Biochemical and Biophysical Research Communications · doi:10.1016/j.bbrc.2021.12.071 · Cited by 26
The effects of time-restricted eating on sleep, cognitive decline, and Alzheimer's disease
Ezzati, A., & Pak, V. M. (2022) · Experimental Gerontology · doi:10.1016/j.exger.2022.112033 · Cited by 28
“Evidence indicates that inflammation promotes pathological processes that lead to AD (McCaulley and Grush, 2015; Tarkowski et al., 2003).”
BackgroundTargeting dopamine transporter to ameliorate cognitive deficits in Alzheimer's disease
Shaikh, A., Ahmad, F., Teoh, S. L., Kumar, J., & Yahaya, M. F. (2023) · Frontiers in Cellular Neuroscience · doi:10.3389/fncel.2023.1292858 · Cited by 28
“AD has an intricate pathophysiology that is believed to be initiated by oxidative stress, leading to the deposition of amyloid-β (A β ), tau hyperphosphorylation, neuroinflammation, and neurodegeneration (Tarkowski, 2003; Manczak et al., 2011; Leuner et al., 2012).”
BackgroundZhuang, L., Liu, X., Xu, X., Yue, C., Shu, H., Bai, F., Yu, H., Shi, Y., & Zhang, Z. (2012) · Journal of Neuroinflammation · doi:10.1186/1742-2094-9-263 · Cited by 25
“A case–control study on CSF concluded that intrathecal inflammation precedes the development of AD [41], and found the levels of IL-1β were significantly correlated with the levels of tau and Aβ in”
BackgroundRussell, A. E., Jun, S., Sarkar, S., Geldenhuys, W. J., Lewis, S. E., Rellick, S. L., & Simpkins, J. W. (2019) · Frontiers in Cellular Neuroscience · doi:10.3389/fncel.2019.00051 · Cited by 27
Circulating immune complexes of Aβ and IgM in plasma of patients with Alzheimer’s disease
Marcello, A., Wirths, O., Schneider-Axmann, T., Degerman-Gunnarsson, M., Lannfelt, L., & Bayer, T. A. (2009) · Journal of Neural Transmission · doi:10.1007/s00702-009-0224-y · Cited by 25
“However, whether autoimmunity plays a direct role in the patho- genesis of AD is still open to debate (McGeer and McGeer 2001; Singh 1997; Tarkowski et al. 2003).”
Heat Shock Protein 70 and Tumor Necrosis Factor Alpha in Taiwanese Patients with Dementia
Fung, H., Chen, C. M., Wu, Y.-Y., Hsu, W.-W., Ro, L. ‐., Lin, J., Chang, K. H., Wang, H., Lin, S., Chan, H.-L., et al. (2005) · Dementia and Geriatric Cognitive Disorders · doi:10.1159/000085067 · Cited by 24
“The cerebrospinal fluid levels of TNF-α were related to cerebral neuronal damage, apoptosis and the clinical variables of dementia. Increased levels of TNF-α were also observed in patients with mild cognitive impairment at risk to develop AD [”
BackgroundRogers, N. K., Romero, C., SanMartín, C. D., Ponce, D. P., Salech, F., López, M. N., Gleisner, M. A., Tempio, F., & Behrens, M. I. (2019) · Journal of Alzheimer s Disease · doi:10.3233/jad-190839 · Cited by 23
Characterisation of amyloid-induced inflammatory responses in the rat retina
Howlett, D. R., Bate, S. T., Collier, S., Lawman, A. J., Chapman, T. D., Ashmeade, T. E., Marshall, I. C. B., Anderson, P. J., Philpott, K. L., Richardson, J. C., et al. (2011) · Experimental Brain Research · doi:10.1007/s00221-011-2819-4 · Cited by 22
“More recent studies using plasma markers as predictors of progression from MCI to AD identified a panel of 18 markers that predicted progression to AD with 90% accuracy (Ray et al. 2007).”
BackgroundTreatment implications of the altered cytokine-insulin axis in neurodegenerative disease
Clark, I. A., & Vissel, B. (2013) · Biochemical Pharmacology · doi:10.1016/j.bcp.2013.07.030 · Cited by 23
Diverse pathways to neuronal necroptosis in Alzheimer's disease
Jayaraman, A., & Reynolds, R. (2022) · European Journal of Neuroscience · doi:10.1111/ejn.15662 · Cited by 21
“In AD, levels of TNF in the cerebrospinal fluid (CSF) and TNF and TNFR1 protein levels in post-mortem brains have been shown to be increased at an early stage (Hu et al., 2019; Swardfager et al., 2010; Tarkowski et al., 2003; Zhao et al., 2003).”
BackgroundMechanisms of abnormal adult hippocampal neurogenesis in Alzheimer’s disease
Zhou, Y., Wang, X., Liu, Y., Gu, Y., Gu, R., Zhang, G., & Lin, Q. (2023) · Frontiers in Neuroscience · doi:10.3389/fnins.2023.1125376 · Cited by 22
“The activation time of microglia is earlier than that of Aβ and Tau protein pathology in both brains of AD patients and AD mouse models (Tarkowski et al., 2003; Wright et al., 2013).”
ResultImmunity impacts cognitive deficits across neurological disorders
Shaw, B. C., Anders, V., Tinkey, R. A., Habean, M. L., Brock, O. D., Frostino, B. J., & Williams, J. L. (2023) · Journal of Neurochemistry · doi:10.1111/jnc.15999 · Cited by 27
Khan, H., Naseem, T., Kaushik, P., Narang, J., Khan, R., Panwar, S., & Parvez, S. (2024) · Ageing Research Reviews · doi:10.1016/j.arr.2024.102535 · Cited by 21
Molecular Regulation Mechanism of Microglial Autophagy in the Pathology of Alzheimer's Disease
Ou-Yang, P., Cai, Z., & Zhang, Z.-H. (2023) · Aging and Disease · doi:10.14336/ad.2023.0106 · Cited by 21
“patients with mild cognitive impairment and AD [3-6], suggesting that intrathecal inflammation precedes AD development.”
BackgroundIncretin-based therapeutics for the treatment of neurodegenerative diseases
Vear, A., Heneka, M. T., & Clemmensen, C. (2025) · Nature Metabolism · doi:10.1038/s42255-025-01263-4 · Cited by 25
“For example, unlike tau and Aβ 1–42 , levels of the proinflammatory cytokine TNF are elevated in the cerebrospinal fluid (CSF) of people with mild cognitive impairment (MCI) who progress to develop AD compared with that of healthy controls 57 .”
Sleep Disturbance and Alzheimer’s Disease: The Glial Connection
Sunkaria, A., & Bhardwaj, S. (2022) · Neurochemical Research · doi:10.1007/s11064-022-03578-0 · Cited by 19
Serafini, S., Ferretti, G., Monterosso, P., Angiolillo, A., Costanzo, A. D., & Matrone, C. (2024) · Antioxidants · doi:10.3390/antiox13020216 · Cited by 19
“In this regard, it has previously been found that patients with systemic inflammatory events and elevated plasma TNF-α levels show a 10-fold higher rate of cognitive decline over a 6-month observation period [46,47].”
BackgroundMitochondrial Proteome Changes Correlating with β-Amyloid Accumulation
Völgyi, K., Háden, K., Kis, V., Gulyássy, P., Badics, K., Györffy, B. A., Simor, A., Szabó, Z., Janáky, T., Drahos, L., et al. (2016) · Molecular Neurobiology · doi:10.1007/s12035-015-9682-4 · Cited by 20
“TNF level is in good correlation with clinical progression of AD [42].”
Zhou, Y., Huang, Z., Lin, B., Ma, M., Hao, Y., Liu, J., Xu, W., Huang, G., Mo, W., Wang, X., et al. (2025) · Cellular and Molecular Immunology · doi:10.1038/s41423-024-01235-w · Cited by 19
Ajit, D., Udan, M. L. D., Paranjape, G. S., & Nichols, M. R. (2009) · Biochemistry · doi:10.1021/bi9003777 · Cited by 18
“Imaging of the Aβ(1-42) aggregation solutions with atomic force microscopy indicated that best cellular response coincided with the appearance of fibrillar structures yet conditions that accelerated or increased Aβ(1-42) fibril formation such as peptide concentration, temperature, or reconstitution in NaOH/PBS at pH 7.”
InfluentialImmune Response at the Crossroads of Atherosclerosis and Alzheimer's Disease
Stahr, N. A., & Galkina, E. (2022) · Frontiers in Cardiovascular Medicine · doi:10.3389/fcvm.2022.870144 · Cited by 18
“Importantly, elevated TNFα levels and reduced TGFβ production have been detected in the cerebrospinal fluid (CSF) of patients with mild cognitive impairment highlighting that CNS-associated inflammation is an early hallmark in the pathogenesis of AD (31).”
BackgroundConcentration and proteolysis of CX3CL1 may regulate the microglial response to CX3CL1
Finneran, D. J., Li, Q., Subbarayan, M. S., Joly‐Amado, A., Kamath, S. G., Dengler, D. G., Gordon, M. N., Jackson, M. R., Morgan, D., Bickford, P. C., et al. (2022) · Glia · doi:10.1002/glia.24269 · Cited by 18
“cytokines that have been implicated in neurodegenerative diseases such as PD & AD (Patel et al., 2005; Tarkowski et al., 2003).”
BackgroundTargeting Progranulin as an Immuno-Neurology Therapeutic Approach
Boylan, M. A., Pincetic, A., Romano, G. J., Tatton, N. A., Kenkare-Mitra, S., & Rosenthal, A. (2023) · International Journal of Molecular Sciences · doi:10.3390/ijms242115946 · Cited by 19
Xie, W., Hou, Y., Xiao, S., Zhang, X., & Zhang, Z. (2024) · RMD Open · doi:10.1136/rmdopen-2023-004016 · Cited by 17
“25 26 In a double-blind, parallel-group, multicentre trial of 168 patients with early AD, hydroxychloroquine exposure for 18 months showed similar cognitive changes to placebo.”
BackgroundInvolvement of inflammasomes in the pathogenesis of Alzheimer's disease
Beder, N., Belkhelfa, M., & Leklou, H. (2024) · Journal of Alzheimer s Disease · doi:10.1177/13872877241283677 · Cited by 20
Metadata
- Authors
- Tarkowski, E.
- Affiliations
- University of Gothenburg (SE)
- Corresponding author
- Tarkowski, E
- Venue
- Journal of Neurology, Neurosurgery & Psychiatry
- Publisher
- BMJ
- Published
- 2003-09-01
- Volume
- 74
- Issue
- 9
- Pages
- 1200-1205
- ISSN
- 0022-3050 (ISSN-L)
- PMC
- PMC1738668
- OpenAlex
- W2071728536
- Cited by
- 501
- References
- 53
- Citations by year
- 2026: 16 · 2025: 17 · 2024: 45 · 2023: 28 · 2022: 43 · 2021: 51 · 2020: 23 · 2019: 30 · 2018: 32 · 2017: 23 · 2016: 18 · 2015: 16 · 2014: 14 · 2013: 13 · 2012: 18
- FWCI
- 6.52
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Neurology Neurosurgery & Psychiatry (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Rune och Ulla Amlövs Stiftelse för Neurologisk och Reumatologisk Forskning
- Hjärt-Lungfonden
- Göteborgs Läkaresällskap
- Svenska Läkaresällskapet
- Stiftelsen Konung Gustaf V:s 80-årsfond
- Medical Research Council
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Keywords
- Alzheimer's disease, mild cognitive impairment, cerebrospinal fluid biomarkers, intrathecal inflammation, inflammatory cytokines, TNF-α, IL-1β, GM-CSF, TGF-beta, tau protein, amyloid-beta, amyloid metabolism, neuroinflammation, disease progression
- MeSH terms
- Aged, Aged, 80 and over, Alzheimer Disease, Central Nervous System, Cognition Disorders, Female, Humans, Inflammation, Interleukin-1, Male, Middle Aged, Prospective Studies, Risk Factors, Tumor Necrosis Factor-alpha, Granulocyte-Macrophage Colony-Stimulating Factor, Amyloid beta-Peptides, tau Proteins, Plaque, Amyloid
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