Cited by 2,194Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Stages of the Pathologic Process in Alzheimer Disease: Age Categories From 1 to 100 Years

Braak, Heiko, Thal, Dietmar R., Ghebremedhin, Estifanos, Del Tredici, Kelly·2011·Journal of Neuropathology & Experimental Neurology

Abstract

Two thousand three hundred and thirty two nonselected brains from 1- to 100-year-old individuals were examined using immunocytochemistry (AT8) and Gallyas silver staining for abnormal tau; immunocytochemistry (4G8) and Campbell-Switzer staining were used for the detection ofβ-amyloid. A total of 342 cases was negative in the Gallyas stain but when restaged for AT8 only 10 were immunonegative. Fifty-eight cases had subcortical tau predominantly in the locus coeruleus, but there was no abnormal cortical tau (subcortical Stages a-c). Cortical involvement (abnormal tau in neurites) was identified first in the transentorhinal region (Stage 1a, 38 cases). Transentorhinal pyramidal cells displayed pretangle material (Stage 1b, 236 cases). Pretangles gradually became argyrophilic neurofibrillary tangles (NFTs) that progressed in parallel with NFT Stages I to VI. Pretangles restricted to subcortical sites were seen chiefly at younger ages. Of the total cases, 1,031 (44.2%) had β-amyloid plaques. The first plaques occurred in the neocortex after the onset of tauopathy in the brainstem. Plaques generally developed in the 40s in 4% of all cases, culminating in their tenth decade (75%). β-amyloid plaques and NFTs were significantly correlated (p < 0.0001). These data suggest that tauopathy associated with sporadic Alzheimer disease may begin earlier than previously thought and possibly in the lower brainstem rather than in the transentorhinal region.

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Crossref · 10.1097/nen.0b013e318232a379

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  • Up to 60% of CU individuals over age 80 years have AD neuropathologic changes at autopsy or by biomarkers.

    “Up to 60% of CU individuals over age 80 years have AD neuropathologic changes at autopsy or by biomarkers [60,152,212–214].”

    From NIA‐AA Research Framework: Toward a biological definition of Alzheimer's disease (2018) · cites this paper as [213]

    The Abstract reports AD-related plaques in autopsy cases and says their prevalence reached 75% in the tenth decade. The Study Cohort describes nonselected autopsy cases, not a cognitively unimpaired (CU) group; the paper does not establish a 60% rate for CU people over 80 or report biomarker-based prevalence. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Screening revealed low rates of Braak 1-2 NFT stages in all three groups, consistent with literature-based norms.

    “screening revealed low rates of Braak 1–2 NFT stages in all three groups (Table 2), consistent with literature-based norms [3].”

    From Tuberous sclerosis complex is associated with a novel human tauopathy (2023) · cites this paper as [3]

    The section on neurofibrillary stages reports 589 Stage I and 497 Stage II cases among 2,332, providing literature-based frequencies for comparison. It does not establish that rates in the citing study’s three groups were low or consistent with those frequencies; those groups are not examined in this paper. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Tau aggregation in the brain is associated with older age and is generally uncommon in healthy young adults.

    “It should be noted that tau aggregation in the brain is associated with older age and is generally uncommon in healthy young adults (Braak et al., 2011; Crary et al., 2014).”

    From Tauopathy and Epilepsy Comorbidities and Underlying Mechanisms (2022) · cites this paper as Braak et al., 2011

    The Intraneuronal Gallyas-Positive Abnormal tau Protein section reports that late neurofibrillary-tangle stages increased with age, supporting an age association for advanced pathology. But the Discussion reports abnormal tau in younger individuals and explicitly says the underlying process is not age-dependent; the paper does not establish that tau aggregation is generally uncommon in healthy young adults. Page numbers were not available in our copy. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Medial temporal and brainstem neurofibrillary changes were observed in older TSC subjects at a rate comparable to the epilepsy and non-neurological control groups and age-based norms.

    “Medial temporal and brainstem neurofibrillary changes were observed in our older TSC subjects, as expected, but at a rate comparable to that observed in the epilepsy and non-neurological control groups and age-based norms [3].”
  • In individuals with autosomal dominant mutations in APP or Presenilin, altered Aβ generation causing early plaque deposition initiates the disease, and patients invariably develop the full spectrum of tau pathology.

    “In individuals with autosomal dominant mutations in genes coding for amyloid precursor protein (APP) or Presenilin 119 , alterations in Aβ generation that result in early deposition of plaque initiate the disease and patients invariably develop the full spectrum of tau pathology 120,121 .”

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Cites

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Research works printed but not linked: 61

  1. Nelson PT, Braak H, Markesbery WR. Neuropathology and cognitive impairment in Alzheimer's disease: A complex but coherent relationship. J Neuropathol Exp Neurol 2009;68:1Y14
  2. Braak H, Braak E. Frequency of stages of Alzheimer-related lesions in different age categories. Neurobiol Aging 1997;18:351Y57
  3. Thal DR, Ru ¨b U, Schultz C, et al. Sequence of Ab-protein deposition in the human medial temporal lobe. J Neuropathol Exp Neurol 2000;59: 733Y48
  4. Thal DR, Ru ¨b U, Orantes M, et al. Phases of Ab-deposition in the human brain and its relevance for the development of AD. Neurology 2002;58: 1791Y1800
  5. Alafuzoff I, Arzberger T, Al-Sarraj S, et al. Staging of neurofibrillary pathology in Alzheimer's disease: A study for the BrainNet Europe Con- sortium. Brain Pathol 2008;18:484Y96
  6. Goedert M, Jakes R, Crowther RA, et al. The abnormal phosphorylation of tau protein at Ser-202 in Alzheimer disease recapitulates phosphory- lation during development. Proc Natl Acad Sci U S A 1993;90:5066Y70
  7. Trojanowski JQ, Lee VMY. ''Fatal attractions'' of proteins. A compre- hensive hypothetical mechanism underlying Alzheimer's disease and other neurodegenerative disorders. Ann N Y Acad Sci 2000;924:62Y67
  8. Goedert M, Spillantini MG. A century of Alzheimer's disease. Science 2006;314:777Y81
  9. Mattson MP. Molecular and cellular pathways towards and away from Alzheimer's disease. In: Jucker M, Beyreuther K, Haass C, Nitsch R, Christen Y, eds. Alzheimer: 100 Years and Beyond. Berlin, Germany: Springer, 2006:371Y78
  10. Mandelkow E, von Bergen M, Biernat J, et al. Structural principles of tau and the paired helical filaments of Alzheimer's disease. Brain Pathol 2007;17:83Y90
  11. Kovacech B, Skrabana R, Novak M. Transition of tau protein from dis- ordered to misordered in Alzheimer's disease. Neurodegenerat Dis 2010; 7:24Y27 16. Dickson DW. Neuropathology of non-Alzheimer degenerative disorders. Int J Clin Exp Pathol 2009;25:1Y23
  12. Braak H, Braak E. Argyrophilic grains: Characteristic pathology of cer- ebral cortex in cases of adult onset dementia without Alzheimer changes. Neurosci Lett 1987;76:124Y27
  13. Ferrer I, Santpere G, van Leeuwen FW. Argyrophilic grain disease. Brain 2008;131:1416Y32
  14. Tolnay M, Probst A. Argyrophilic grain disease. Handb Clin Neurol 2008; 89:553Y63
  15. Braak H, Braak E. Demonstration of amyloid deposits and neurofibrillary changes in whole brain sections. Brain Pathol 1991;1:213Y16
  16. Braak H, Del Tredici K, Ru ¨b U, et al. Staging of brain pathology related to sporadic Parkinsons disease. Neurobiol Aging 2003;24:197Y210
  17. Beach TG, Adler CH, Sue SI, et al. Multi-organ distribution of phos- phorylated alpha-synuclein histopathology in subjects with Lewy body disorders. Acta Neuropathol 2010;119:689Y702
  18. Pikkarainen M, Martikainen P, Alafuzoff I. The effect of prolonged fix- ation time on immunohistochemical staining of common neurodegenerative disease markers. J Neuropathol Appl Neurol 2010;69:40Y52
  19. German DC, White CL, Sparkman DR. Alzheimer's disease: Neurofi- brillary tangles in nuclei that project to the cerebral cortex. Neuroscience 1987;21:305Y12
  20. Hertz L. Is Alzheimer's disease an anterograde degeneration, originating in the brainstem, and disrupting metabolic and functional interactions between neurons and glial cells? Brain Res Rev 1989;14:335Y53
  21. Parvizi J, Van Hoesen GW, Damasio A. The selective vulnerability of brainstem nuclei to Alzheimer's disease. Ann Neurol 2001;49:53Y66
  22. Grinberg LT, Ru ¨b U, Ferretti REL, et al. The dorsal raphe nucleus shows phospho-tau neurofibrillary changes before the transentorhinal region in Alzheimer's disease. A precocious onset? Neuropathol Appl Neurobiol 2009;35:406Y16
  23. Geula C, Nagykery N, Nicholas A, et al. Cholinergic and axonal abnor- malities are present early in aging and Alzheimer disease. J Neuropathol Exp Neurology 2008;67:309Y18
  24. Simic G, Stanic G, Mladinov M, et al. Does Alzheimer's disease begin in the brainstem? Neuropathol Appl Neurobiol 2009;35:532Y54
  25. Zweig RM, Ross CA, Hedreen JC, et al. The neuropathology of ami- nergic nuclei in Alzheimer's disease. Ann Neurol 1988;24:233Y42
  26. Busch C, Bohl J, Ohm TG. Spatial, temporal and numeric analysis of Alzheimer changes in the nucleus coeruleus. Neurobiol Aging 1997;18: 401Y6
  27. Zarow C, Lyness SA, Mortimer JA, et al. Neuronal loss is greater in the locus coeruleus than nucleus basalis and substantia nigra in Alzheimer and Parkinson diseases. Arch Neurol 2003;60:337Y41
  28. Aston-Jones G, Cohen JD. An integrative theory of locus coeruleus norepinephrine function: Adaptive gain and optimal performance. Ann Rev Neurosci 2005;28:403Y50
  29. Haglund M, Sjo ¨beck M, Englund E. Locus coeruleus degeneration is ubiquitous in Alzheimer's disease: Possible implications for diagnosis and treatment. Neuropathology 2006;26:528Y32
  30. Muresan Z, Muresan V. Seeding neuritic plaques from the distance: A possible role for brainstem neurons in the development of Alzheimer's disease pathology. Neurodegenerative Dis 2008;5:250Y53
  31. Weinshenker D. Functional consequences of locus coeruleus degener- ation in Alzheimer's disease. Curr Alzheimer Res 2008;5:342Y45
  32. Sara SJ. The locus coeruleus and noradrenergic modulation of cognition. Nat Rev Neurosci 2009;10:211Y23
  33. Pearson J, Goldstein M, Markey K, et al. Human brainstem catechol- amine neuronal anatomy as indicated by immunocytochemistry with antibodies to tyrosine hydroxylase. Neuroscience 1983;8:3Y32
  34. Bobinski M, Wegiel J, Tarnawski M, et al. Duration of neurofibrillary changes in the hippocampal pyramidal neurons. Brain Res 1998;799: 156Y58
  35. Braak E, Braak H, Mandelkow EM. A sequence of cytoskeleton changes related to the formation of neurofibrillary tangles and neuropil threads. Acta Neuropathol 1994;87:554Y67
  36. Bishop NA, Lu T, Yankner BA. Neural mechanisms of ageing and cog- nitive decline. Nature 2010;464:529Y35
  37. Herrup K. Reimagining Alzheimer's diseaseVan age-based hypothesis. J Neurosci 2010;30:16755Y62
  38. Frautschy SA, Cole GM. Why pleiotropic interventions are needed for Alzheimer's disease. Mol Neurobiol 2010;41:392Y409
  39. Martinez A, Porteo-Otin M, Pamplona R, et al. Protein targets of oxida- tive damage in human neurodegenerative diseases with abnormal protein aggregates. Brain Pathol 2010;20:281Y97
  40. Patten DA, Germain M, Kelly MA, et al. Reactive oxygen species: Stuck in the middle of neurodegeneration. J Alzheimers Dis 2010;20:357Y67
  41. Hyman BT, Gome ´z-Isla T. Alzheimer's disease is a laminar, regional, and neural system specific disease, not a global brain disease. Neurobiol Aging 1994;15:353Y54
  42. Ohm TG, Mu ¨ller H, Braak H, Bohl J. Close-meshed prevalence rates of different stages as a tool to uncover the rate of Alzheimer's diseaseY related neurofibrillary changes. Neuroscience 1995;64:209Y17
  43. Amieva H, Le Goff M, Millet X, et al. Prodromal Alzheimer's disease: Successive emergence of clinical symptoms. Ann Neurol 2008;64:492Y98
  44. Li B, Chohan MO, Grundke-Iqbal I, et al. Disruption of microtubule network by Alzheimer abnormally hyperphosphorylated tau. Acta Neu- ropathol 2007;113:501Y11
  45. Alonso AC, Li B, Grundke-Iqbal I, et al. Mechanism of tau-induced neurodegeneration in Alzheimer disease and related tauopathies. Curr Alzheimer Res 2008;5:375Y84
  46. Iqbal K, Liu F, Gong CX, et al. Mechanisms of tau-induced neuro- degeneration. Acta Neuropathol 2009;118:53Y69
  47. Stamer K, Vogel R, Thies E, et al. Tau blocks traffic of organelles, neurofilaments, and APP vesicles in neurons and enhances oxidative stress. J Cell Biol 2002;156:1051Y63
  48. Sassin I, Schultz C, Thal DR et al. Evolution of Alzheimer's diseaseY related cytoskeletal changes in the basal nucleus of Meynert. Acta Neu- ropathol 2000;100:259Y69
  49. Hardy JA. The amyloid hypothesis: History and alternatives. In: Jucker M, Beyreuther K, Haass C, et al, eds. Alzheimer: 100 Years and Beyond. Berlin, Germany: Springer, 2006:151Y56
  50. Braak H, Del Tredici K. Alzheimer's disease: Intraneuronal alterations precede insoluble amyloid-A formation. Neurobiol Aging 2004;25:713Y18
  51. Scho ¨nheit B, Zarski R, Ohm TG. Spatial and temporal relationships between plaques and tangles in Alzheimer-pathology. Neurobiol Aging 2004;25:697Y711
  52. Korczyn AD. The amyloid cascade hypothesis. Alzheimers Dement 2008;4:176Y78
  53. Pimplikar SW. Reassessing the amyloid cascade hypothesis of Alzheimer's disease. Int J Biochem Cell Biol 2009;41:1261Y68
  54. Jack CR Jr, Knopman DS, Jagust WJ, et al. Hypothetical model of dynamic biomarkers of the Alzheimer's pathological cascade. Lancet Neurol 2010;9:119Y28
  55. Go ¨tz J, Chen F, van Dorpe J, et al. Formation of neurofibrillary tangles in P301l tau transgenic mice induced by Abeta 42 fibrils. Science 2001; 293:1491Y95
  56. Lewis J, Dickson DW, Lin WL, et al. Enhanced neurofibrillary degen- eration in transgenic mice expressing mutant tau and APP. Science 2001; 293:1487Y91
  57. Oddo S, Billings L, Kesslak JP, et al. Abeta immunotherapy leads to clearance of early, but not late, hyperphosphorylated tau aggregates via the proteasome. Neuron 2004;43:321Y32
  58. Whittington RA, Vira ´g L, Marcouiller F, et al. Propofol directly increases tau phosphorylation. PLoS One 2011;6:e16648
  59. Braak H, Del Tredici K. Alzheimer's pathogenesis: Is there neuron- to-neuron propagation? Acta Neuropathol 2011;121:589Y95
  60. Goedert M, Clavaguera F, Tolnay M. The propagation of prion-like protein inclusions in neurodegenerative diseases. Trends Neurosci 2010; 33:317Y25
  61. Guo JL, Lee VM. Seeding of normal tau by pathological tau conformers drives pathogenesis of Alzheimer-like tangles. J Biol Chem 2011; 286: 15317Y31

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Authors
Braak, H., Thal, D. R., Ghebremedhin, E., & Del Tredici, K.
Affiliations
The University of Queensland (AU)
Corresponding author
Braak, Heiko
Venue
Journal of Neuropathology & Experimental Neurology
Published
2011-11
Volume
70
Issue
11
Pages
960-969
ISSN
  • 0022-3069 (ISSN-L)
  • 1554-6578
OpenAlex
W1993023011
Cited by
2,194
References
11
Citations by year
2026: 152 · 2025: 192 · 2024: 260 · 2023: 233 · 2022: 192 · 2021: 235 · 2020: 182 · 2019: 144 · 2018: 121 · 2017: 110 · 2016: 100 · 2015: 85 · 2014: 78 · 2013: 65 · 2012: 42
FWCI
41.00
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuropathology & Experimental Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Alzheimer Forschung Initiative (10810)
  • Deutsche Forschungsgemeinschaft (TH624 4–1)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, pathological staging, tauopathy, neurofibrillary tangles, amyloid plaques, locus coeruleus, brainstem, sporadic Alzheimer's disease, AT8 antibody
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Alzheimer Disease, Brain, Child, Child, Preschool, Female, Humans, Infant, Male, Middle Aged, Neurons, Cohort Studies, Amyloid beta-Peptides, Silver Staining, Neurofibrillary Tangles, tau Proteins, Disease Progression, Statistics, Nonparametric, Young Adult

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