Journal
MAGNETIC RESONANCE IMAGING
Volume 20, Issue 7, Pages 527-533Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0730-725X(02)00512-X
Keywords
NAA (N-acetylaspartate); Alzheimer disease; superior temporal sulcus; stereology; high resolution magic angle spinning proton MRS
Funding
- NCI NIH HHS [CA77727] Funding Source: Medline
- NCRR NIH HHS [RR13213] Funding Source: Medline
- NIA NIH HHS [AG08487, P01 AG05134] Funding Source: Medline
- NINDS NIH HHS [NS34626] Funding Source: Medline
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Samples from human brains were examined with both stereologic methods for neuronal counting and high resolution magic angle spinning (HRMAS) proton magnetic resonance spectroscopy (1HMRS) for quantification of cellular metabolites. A statistically significant linear correlation between neuronal density and the concentration of N-acetylaspartate (NAA) in the superior temporal sulcus (STS) area was observed. Although NAA has been widely utilized as a neuronal marker in in vivo MRS, an emerging sub-discipline of diagnostic neuroradiology, the experimental proof of the unilateral relationship between NAA and neurons has yet to be confirmed. The observed correlation provides experimental evidence that NAA concentration is proportional to the neuronal density. Metabolite ratios measured from the STS area were compared to those from frontal association cortex for their sensitivities in differentiating Alzheimer disease brains from control brains. (C) 2002 Elsevier Science Inc. All rights reserved.
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