Cited by 236Advanced MRI Techniques and ApplicationsAdvanced Neuroimaging Techniques and ApplicationsMetabolomics and Mass Spectrometry Studies

In Vitro Expression of N‐Acetyl Aspartate by Oligodendrocytes: Implications for Proton Magnetic Resonance Spectroscopy Signal In Vivo

Bhakoo, Kishore K., Pearce, Daniel·2000·Journal of Neurochemistry

Abstract

Abstract: Magnetic resonance spectroscopy (MRS) provides a noninvasive means of assessing in vivo tissue biochemistry. N‐Acetyl aspartate (NAA) is a major brain metabolite, and its presence is used increasingly in clinical and experimental MRS studies as a putative neuronal marker. A reduction in NAA levels as assessed by in vivo 1 H MRS has been suggested to be indicative of neuronal viability. However, temporal observations of brain pathologies such as multiple sclerosis, mitochondrial encephalopathy with lactic acidosis and stroke‐like episodes (MELAS), and hypothyroidism have shown reversibility in NAA levels, possibly reflecting recovery of neuronal function. A knowledge of the cellular localisation of NAA is critical in interpreting these findings. The assumption that NAA is specific to neurones is based on previous immunohistochemical studies on whole brain using NAA‐specific antibodies. The neuronal localisation was further substantiated by cell culture experiments in which its presence in the oligodendrocyte‐type 2 astrocyte progenitors and immature oligodendrocytes, but not in the mature oligodendrocytes, was observed. More recently, studies on oligodendrocyte biology have revealed the requirement for trophic factors to promote the generation, maturation, and survival of oligodendrocytes in vitro. Here, we have used this new information to implement a more pertinent cell cultivation procedure and demonstrate that mature oligodendrocytes can express NAA in vitro. This observation brings into question whether the NAA changes observed in clinical in vivo 1 H MRS studies reflect neuronal function alone. The data presented here support the hypothesis that oligodendrocytes may express NAA in vivo and contribute to the NAA signal observed by 1 H MRS.

Integrity signals

Registry

Crossref · 10.1046/j.1471-4159.2000.0740254.x

Cites

69 of 69 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Bhakoo, K. K., & Pearce, D.
Affiliations
University of Oxford (GB)
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2000-01
Volume
74
Issue
1
Pages
254-262
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1514552878
Cited by
236
References
69
Citations by year
2025: 2 · 2024: 2 · 2022: 2 · 2021: 5 · 2020: 4 · 2019: 3 · 2017: 5 · 2016: 3 · 2015: 8 · 2014: 7 · 2013: 8 · 2012: 14
FWCI
23.56
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
Keywords
N-acetylaspartate, oligodendrocytes, oligodendrocyte maturation, neuronal markers, 1H magnetic resonance spectroscopy, brain metabolites, multiple sclerosis, MELAS, hypothyroidism, neuronal viability
MeSH terms
Animals, Aspartic Acid, Cell Survival, Cells, Cultured, Chromatography, High Pressure Liquid, Immunohistochemistry, Magnetic Resonance Spectroscopy, Oligodendroglia, Protons, Stem Cells, Cellular Senescence, Ciliary Neurotrophic Factor, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review