Reduced Hippocampal GABA+ Is Associated With Poorer Episodic Memory in Healthy Older Women: A Pilot Study Article Swipe
YOU?
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· 2021
· Open Access
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· DOI: https://doi.org/10.3389/fnbeh.2021.695416
Background : The current pilot study was designed to examine the association between hippocampal γ-aminobutyric acid (GABA) concentration and episodic memory in older individuals, as well as the impact of two major risk factors for Alzheimer’s disease (AD)—female sex and Apolipoprotein ε4 ( ApoE ε4) genotype—on this relationship. Methods : Twenty healthy, community-dwelling individuals aged 50–71 (11 women) took part in the study. Episodic memory was evaluated using a Directed Forgetting task, and GABA+ was measured in the right hippocampus using a Mescher-Garwood point-resolved magnetic resonance spectroscopy (MRS) sequence. Multiple linear regression models were used to quantify the relationship between episodic memory, GABA+, ApoE ɛ4 , and sex, controlling for age and education. Results : While GABA+ did not interact with ApoE ɛ4 carrier status to influence episodic memory ( p = 0.757), the relationship between GABA+ and episodic memory was moderated by sex: lower GABA+ predicted worse memory in women such that, for each standard deviation decrease in GABA+ concentration, memory scores were reduced by 11% ( p = 0.001). Conclusions : This pilot study suggests that sex, but not ApoE ɛ4 genotype, moderates the relationship between hippocampal GABA+ and episodic memory, such that women with lower GABA+ concentration show worse memory performance. These findings, which must be interpreted with caution given the small sample size, may serve as a starting point for larger studies using multimodal neuroimaging to understand the contributions of GABA metabolism to age-related memory decline.
Related Topics
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3389/fnbeh.2021.695416
- https://www.frontiersin.org/articles/10.3389/fnbeh.2021.695416/pdf
- OA Status
- gold
- Cited By
- 16
- References
- 69
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3198612298
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3198612298Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3389/fnbeh.2021.695416Digital Object Identifier
- Title
-
Reduced Hippocampal GABA+ Is Associated With Poorer Episodic Memory in Healthy Older Women: A Pilot StudyWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2021Year of publication
- Publication date
-
2021-08-26Full publication date if available
- Authors
-
Joan Jiménez-Baladó, Alexandra Ycaza Herrera, Kay C. Igwe, Lynda Klem, Korhan Buyukturkoglu, Andrei Irimia, Chen Liu, Jia Guo, Adam M. Brickman, Teal S. EichList of authors in order
- Landing page
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https://doi.org/10.3389/fnbeh.2021.695416Publisher landing page
- PDF URL
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https://www.frontiersin.org/articles/10.3389/fnbeh.2021.695416/pdfDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.frontiersin.org/articles/10.3389/fnbeh.2021.695416/pdfDirect OA link when available
- Concepts
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Episodic memory, Forgetting, Hippocampus, Psychology, Hippocampal formation, Alzheimer's Disease Neuroimaging Initiative, Neuroscience, Apolipoprotein E, Cognition, Audiology, Medicine, Internal medicine, Disease, Cognitive impairment, Cognitive psychologyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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16Total citation count in OpenAlex
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2025: 4, 2024: 2, 2023: 5, 2022: 4, 2021: 1Per-year citation counts (last 5 years)
- References (count)
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69Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.Mescher-Garwood | 82 |
| abstract_inverted_index.γ-aminobutyric | 14 |
| abstract_inverted_index.community-dwelling | 52 |
| cited_by_percentile_year.max | 98 |
| cited_by_percentile_year.min | 89 |
| corresponding_author_ids | https://openalex.org/A5058875514 |
| countries_distinct_count | 1 |
| institutions_distinct_count | 10 |
| corresponding_institution_ids | https://openalex.org/I1174212, https://openalex.org/I2799503643, https://openalex.org/I78577930 |
| sustainable_development_goals[0].id | https://metadata.un.org/sdg/1 |
| sustainable_development_goals[0].score | 0.4399999976158142 |
| sustainable_development_goals[0].display_name | No poverty |
| citation_normalized_percentile.value | 0.89623617 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |