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.
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.
Authors: Gregor Hasler; Jan Willem van der Veen; Marilla Geraci; Jun Shen; Daniel Pine; Wayne C Drevets Journal: Biol Psychiatry Date: 2008-08-09 Impact factor: 13.382
Authors: Brent P Forester; Chelsea T Finn; Yosef A Berlow; Megan Wardrop; Perry F Renshaw; Constance M Moore Journal: Bipolar Disord Date: 2008-09 Impact factor: 6.744
Authors: Melissa Scholefield; Stephanie J Church; Jingshu Xu; Andrew C Robinson; Natalie J Gardiner; Federico Roncaroli; Nigel M Hooper; Richard D Unwin; Garth J S Cooper Journal: Metabolites Date: 2020-10-29