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Search: id:"swepub:oai:lup.lub.lu.se:a53d86b7-8949-4938-b7b3-c9668c4f44b5" > Plasma p-tau181 and...

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  • Yu, LeiRush University Medical Center Chicago,Rush Alzheimer's Disease Center (author)

Plasma p-tau181 and p-tau217 in discriminating PART, AD and other key neuropathologies in older adults

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023
  • 11 s.

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  • LIBRIS-ID:oai:lup.lub.lu.se:a53d86b7-8949-4938-b7b3-c9668c4f44b5
  • https://lup.lub.lu.se/record/a53d86b7-8949-4938-b7b3-c9668c4f44b5URI
  • https://doi.org/10.1007/s00401-023-02570-4DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We examined whether plasma p-tau181 and p-tau217 are specific biomarkers of pathologically confirmed Alzheimer’s disease (AD). In particular, we investigated the utility of plasma p-tau for differentiating AD from primary age-related tauopathy (PART), as well as AD with mixed pathologies. Data came from 269 older adults who participated in the Religious Orders Study or the Rush Memory and Aging Project. Blood samples were collected during annual clinical evaluations. Participants died and underwent brain autopsy. P-tau181 and p-tau217 were quantified in the plasma samples proximate to death (average interval before death: 1.4 years) using Lilly-developed MSD immunoassays. Uniform neuropathologic evaluations assessed AD, PART, and other common degenerative and cerebrovascular conditions. Plasma p-tau217 was more strongly correlated with brain β-amyloid and paired helical filament tau (PHFtau) tangles than p-tau181. Both p-tau markers were associated with greater odds of AD, but p-tau217 had higher accuracy (area under the ROC curve (AUC): 0.83) than p-tau181 (AUC: 0.76). Plasma p-tau markers were almost exclusively associated with AD pathologic indices with the exception of cerebral amyloid angiopathy. Compared to p-tau181, p-tau217 showed a higher AUC (0.82 versus 0.74) in differentiating AD from PART. For either p-tau, we did not observe a level difference between individuals with AD alone and those with mixed AD pathologies. In summary, plasma p-tau181and p-tau217 were specifically associated with AD pathological changes. Further, our data provide initial evidence that p-tau217 may be able to differentiate between AD and PART in individuals with comparable burdens of tau tangle pathology. These results demonstrate the specificity of p-tau217 for AD, supporting its use to identify patients suitable for anti-AD therapies including β-amyloid immunotherapies.

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  • Boyle, Patricia A.Rush University Medical Center Chicago,Rush Alzheimer's Disease Center (author)
  • Janelidze, ShorenaLund University,Lunds universitet,Klinisk minnesforskning,Forskargrupper vid Lunds universitet,LU profilområde: Proaktivt åldrande,Lunds universitets profilområden,Clinical Memory Research,Lund University Research Groups,LU Profile Area: Proactive Ageing,Lund University Profile areas(Swepub:lu)nkir-sje (author)
  • Petyuk, Vladislav A.Pacific Northwest National Laboratory (author)
  • Wang, TianhaoRush Alzheimer's Disease Center,Rush University Medical Center Chicago (author)
  • Bennett, David A.Rush University Medical Center Chicago,Rush Alzheimer's Disease Center (author)
  • Hansson, OskarLund University,Lunds universitet,Klinisk minnesforskning,Forskargrupper vid Lunds universitet,LU profilområde: Proaktivt åldrande,Lunds universitets profilområden,Clinical Memory Research,Lund University Research Groups,LU Profile Area: Proactive Ageing,Lund University Profile areas,Skåne University Hospital(Swepub:lu)mphy-ohn (author)
  • Schneider, Julie A.Rush Alzheimer's Disease Center,Rush University Medical Center Chicago (author)
  • Rush University Medical Center ChicagoRush Alzheimer's Disease Center (creator_code:org_t)

Related titles

  • In:Acta Neuropathologica146:1, s. 1-110001-6322

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