Gender differences in Alzheimer disease: Brain atrophy, histopathology burden, and cognition

Jessica R. Filon, Anthony J. Intorcia, Lucia I. Sue, Elsa Vazquez Arreola, Jeffrey Wilson, Kathryn J. Davis, Marwan N. Sabbagh, Christine M. Belden, Richard J. Caselli, Charles H. Adler, Bryan K. Woodruff, Steven Z. Rapscak, Geoffrey L. Ahern, Anna D. Burke, Sandra Jacobson, Holly A. Shill, Erika Driver-Dunckley, Kewei Chen, Eric M. Reiman, Thomas G. BeachGeidy E. Serrano

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Multiple studies suggest that females are affected by Alzheimer disease (AD) more severely and more frequently than males. Other studies have failed to confirm this and the issue remains controversial. Difficulties include differences in study methods and male versus female life expectancy. Another element of uncertainty is that the majority of studies have lacked neuropathological confirmation of the AD diagnosis. We compared clinical and pathological AD severity in 1028 deceased subjects with full neuropathological examinations. The age of dementia onset did not differ by gender but females were more likely to proceed to very severe clinical and pathological disease, with significantly higher proportions having a Mini-Mental State Examination score of 5 or less and Braak stage VI neurofibrillary degeneration. Median neuritic plaque densities were similar in females and males with AD but females had significantly greater tangle density scores. In addition, we found that AD-control brain weight differences were significantly greater for females, even after adjustment for age, disease duration, and comorbid conditions. These findings suggest that when they are affected by AD, females progress more often to severe cognitive dysfunction, due to more severe neurofibrillary degeneration, and greater loss of brain parenchyma.

Original languageEnglish (US)
Pages (from-to)748-754
Number of pages7
JournalJournal of Neuropathology and Experimental Neurology
Volume75
Issue number8
DOIs
StatePublished - Aug 1 2016

Keywords

  • Amyloid plaque
  • Brain weight
  • Cognition
  • Neuritic plaque
  • Neurofibrillary tangle
  • Phosphorylated tau

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Neurology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience

Fingerprint Dive into the research topics of 'Gender differences in Alzheimer disease: Brain atrophy, histopathology burden, and cognition'. Together they form a unique fingerprint.

  • Cite this

    Filon, J. R., Intorcia, A. J., Sue, L. I., Vazquez Arreola, E., Wilson, J., Davis, K. J., Sabbagh, M. N., Belden, C. M., Caselli, R. J., Adler, C. H., Woodruff, B. K., Rapscak, S. Z., Ahern, G. L., Burke, A. D., Jacobson, S., Shill, H. A., Driver-Dunckley, E., Chen, K., Reiman, E. M., ... Serrano, G. E. (2016). Gender differences in Alzheimer disease: Brain atrophy, histopathology burden, and cognition. Journal of Neuropathology and Experimental Neurology, 75(8), 748-754. https://doi.org/10.1093/jnen/nlw047