Brain changes with aging: MR spectroscopy at supraventricular plane shows differences between women and men

Paul E. Sijens, Tom Den Heijer, Daniela Origgi, Sarah E. Vermeer, Monique M B Breteler, Albert Hofman, Matthijs Oudkerk

Research output: Contribution to journalArticlepeer-review

Abstract

PURPOSE: To assess the effect of aging on the proportions of choline (Cho), creatine, and N-acetylaspartate (NAA) in the brains of elderly women and men. MATERIALS AND METHODS: A transverse plane above the ventricle of the brain was mapped with magnetic resonance spectroscopy. Examinations were performed in 1995-1996 with 271 healthy subjects (age range, 60-90 years; mean age, 73 years) and were repeated 4 years later (1999-2000). Student t tests were used for statistical analysis. RESULTS: Difference analysis of the changes in 4 years (paired data) reproduced the decrease in Cho in women only (2.9% per year, P <.001) that had been indicated with intersubject correlation analyses. Decreases in NAA, though significant in both men and women according to age correlation analyses (P <.01 for both), did not reach significance. The resulting sex difference in the Cho/NAA ratio at a mean age of 77 years, while not yet significant at a mean age of 73 years, was especially manifest in the posterior half of the plane analyzed. CONCLUSION: Increasing sex differences in Cho/NAA ratios in a supraventricular plane indicate that brain metabolite levels differ between women and men at advanced age.

Original languageEnglish
Pages (from-to)889-896
Number of pages8
JournalRadiology
Volume226
Issue number3
DOIs
Publication statusPublished - Mar 1 2003

Keywords

  • Aging
  • Brain
  • Magnetic resonance (MR)
  • Metabolism
  • Spectroscopy

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

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