Neocortical tau burden determines the degree of cognitive impairment in individuals with Braak stage V neurofibrillary degeneration - Summary - MDSpire

Neocortical tau burden determines the degree of cognitive impairment in individuals with Braak stage V neurofibrillary degeneration

  • By

  • Timothy E. Richardson

  • Jonathan Cherry

  • Shrishtee Kandoi

  • Susan K. Rohde

  • Madeline Uretsky

  • Fatima Tuz-Zahra

  • Kevin F. Bieniek

  • Kurt Farrell

  • Marco M. Hefti

  • Michael B. Miller

  • Yorghos Tripodis

  • Thor D. Stein

  • Carolina Maldonado-Díaz

  • Satomi Hiya

  • Thomas G. Beach

  • María M. Corrada

  • Brittany N. Dugger

  • Margaret E. Flanagan

  • Matthew P. Frosch

  • Marla Gearing

  • Lea T. Grinberg

  • Lawrence A. Hansen

  • Debra Hawes

  • Elizabeth Head

  • C. Dirk Keene

  • Julia Kofler

  • Edward B. Lee

  • Peter T. Nelson

  • Derek H. Oakley

  • Richard J. Perrin

  • Robert A. Rissman

  • Shahriar Salamat

  • Julie A. Schneider

  • Geidy E. Serrano

  • Andrew F. Teich

  • Juan C. Troncoso

  • Thomas Wisniewski

  • Randall L. Woltjer

  • John F. Crary

  • Dennis W. Dickson

  • Ann C. McKee

  • Jamie M. Walker

  • May 25, 2026

  • 0 min

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Objective:

To investigate neuropathologic features contributing to cognitive decline variation specifically in individuals with Braak stage V neurofibrillary changes.

Key Findings:
  • ADNC correlates with global cognitive impairment but shows significant individual variation, indicating the complexity of cognitive decline.
  • Cognitive resilience and comorbid neurodegenerative pathologies complicate the relationship between ADNC and cognitive outcomes, suggesting a need for individualized assessments.
  • The density of p-tau and NFT burden may correlate better with cognitive status than Braak NFT stage alone, highlighting the limitations of current staging systems.
Interpretation:

The study highlights the complexity of cognitive decline in Alzheimer's disease, emphasizing the need for precise neuropathologic assessments and their implications for treatment strategies.

Limitations:
  • The study is limited to individuals with Braak stage V, which may not represent the broader population, potentially affecting the generalizability of the findings.
  • Potential confounding factors from comorbid pathologies were not fully accounted for, which may influence the observed relationships.
Conclusion:

Understanding the impact of neocortical tau accumulation on cognitive dysfunction requires a nuanced approach to neuropathologic assessment, which is crucial for advancing Alzheimer's research.

Original Source(s)

Neocortical tau burden determines the degree of cognitive impairment in individuals with Braak stage V neurofibrillary degeneration

  • by Timothy E. Richardson, Jonathan Cherry, Shrishtee Kandoi, Susan K. Rohde, Madeline Uretsky, Fatima Tuz-Zahra, Kevin F. Bieniek, Kurt Farrell, Marco M. Hefti, Michael B. Miller, Yorghos Tripodis, Thor D. Stein, Carolina Maldonado-Díaz, Satomi Hiya, Thomas G. Beach, María M. Corrada, Brittany N. Dugger, Margaret E. Flanagan, Matthew P. Frosch, Marla Gearing, Lea T. Grinberg, Lawrence A. Hansen, Debra Hawes, Elizabeth Head, C. Dirk Keene, Julia Kofler, Edward B. Lee, Peter T. Nelson, Derek H. Oakley, Richard J. Perrin, Robert A. Rissman, Shahriar Salamat, Julie A. Schneider, Geidy E. Serrano, Andrew F. Teich, Juan C. Troncoso, Thomas Wisniewski, Randall L. Woltjer, John F. Crary, Dennis W. Dickson, Ann C. McKee, Jamie M. Walker

  • May 25, 2026

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