Cited by 227Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeurobiology of Language and Bilingualism

Retrosplenial cortex (BA 29/30) hypometabolism in mild cognitive impairment (prodromal Alzheimer's disease)

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Nestor, P. J., Fryer, T. D., Ikeda, M., Hodges, J. R.·2003·European Journal of Neuroscience

Abstract

Previous group studies using positron emission tomography to assess resting cerebral glucose metabolism in very early Alzheimer's disease and mild cognitive impairment have identified the posterior cingulate and adjacent cingulo-parietal cortex as the first isocortical area to develop hypometabolism. We studied the profile of resting cerebral glucose metabolism in individuals with mild cognitive impairment to assess whether more specific and stereotyped regional hypometabolism would be evident across subjects. The study found that the most consistently hypometabolic region between individual subjects was a subregion of the posterior cingulate, the retrosplenial cortex (BA 29/30). This result is discussed in the context of regional connectivity, focal lesion evidence and functional activation studies of episodic memory paradigms in both normal and Alzheimer's disease groups. We propose that the retrosplenial cortex may represent a key junction between prefrontal areas involved in implementing retrieval strategies for episodic memory and hippocampal-based mnemonic processing; we therefore interpret the retrosplenial hypometabolism as a probable contributor to the memory impairment seen in mild cognitive impairment by disconnecting these two anatomical networks.

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  1. ß 2003 Federation of European Neuroscience Societies, European Journal of Neuroscience, 18, 2663±2667 2666
  2. P. J. Nestor et al. 14609568, 2003, 9, Downloaded from https://onlinelibrary.wiley.com/doi/10.1046/j.1460-9568.2003.02999.x by Mount Vernon Nazarene University, Wiley Online Library on [22/06/2026]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License · DOI

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Authors
Nestor, P. J., Fryer, T. D., Ikeda, M., & Hodges, J. R.
Affiliations
  • University of Cambridge (GB)
  • Ehime University (JP)
  • MRC Cognition and Brain Sciences Unit (GB)
Corresponding author
Nestor, P. J.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2003-11
Volume
18
Issue
9
Pages
2663-2667
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W1965683618
Cited by
227
References
42
Citations by year
2026: 3 · 2025: 12 · 2024: 9 · 2023: 8 · 2022: 7 · 2021: 10 · 2020: 8 · 2019: 8 · 2018: 10 · 2017: 7 · 2016: 11 · 2015: 9 · 2014: 8 · 2013: 13 · 2012: 5
FWCI
5.93
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
Keywords
retrosplenial cortex, posterior cingulate cortex, cerebral glucose hypometabolism, mild cognitive impairment, prodromal Alzheimer's disease, episodic memory, memory retrieval strategies
MeSH terms
Aged, Alzheimer Disease, Cognition Disorders, Glucose, Gyrus Cinguli, Humans, Memory Disorders, Middle Aged, Tomography, Emission-Computed

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