title: Regional age-related effects in the monkey brain measured with 1H magnetic resonance spectroscopy.
abstract: The rhesus monkey is a useful model for examining age-related effects on the brain, because of the extensive neuroanatomical homology between the monkey and the human brain, the tight control for neurological diseases as well as the possibility of obtaining relevant behavioral data and post-mortem tissue for histological analyses. Here, proton magnetic resonance spectroscopy ((1)H-MRS) was used together with high-resolution anatomical MRI images to carefully assess regional concentrations of brain metabolites in a group of 20 rhesus monkeys. In an anterior volume of interest (VOI) that covered frontal and prefrontal areas, significant positive correlations of myo-inositol and of total creatine concentrations with age were detected, whereas N-acetyl aspartate (NAA) and choline compounds (Cho) were not significantly correlated with age. In an occipito-parietal VOI, all metabolites showed no statistically significant age-dependent trend. Strong correlations were found between NAA concentration and gray matter fraction in the VOIs as well as between choline compounds and white matter fraction.
authors: Center for Biomedical Imaging, Boston University School of Medicine, Boston, MA 02118, USA. Itamar@bu.edu
authors: Itamar
authors: I
authors: Ronen
authors: Xiaoying
authors: X
authors: Fan
authors: Steve
authors: S
authors: Schettler
authors: Sahil
authors: S
authors: Jain
authors: Donna
authors: D
authors: Murray
authors: Dae-Shik
authors: DS
authors: Kim
authors: Ronald
authors: R
authors: Killiany
authors: Douglas
authors: D
authors: Rosene
mesh_terms: D000375:Aging / Q000502:physiology*; D000818:Animals; D001224:Aspartic Acid / Q000031:analogs & derivatives / Q000378:metabolism; D001921:Brain / Q000378:metabolism*; D001931:Brain Mapping; D002794:Choline / Q000378:metabolism; D003401:Creatine / Q000378:metabolism; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007294:Inositol / Q000378:metabolism; D008253:Macaca mulatta; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D011522:Protons; D013223:Statistics as Topic
chemical_list: D011522:Protons; D001224:Aspartic Acid; D007294:Inositol; C000179:N-acetylaspartate; D003401:Creatine; D002794:Choline