Volume 8, Issue 9 e1345
ORIGINAL ARTICLE
Open Access

Functional polymorphisms of the mineralocorticoid receptor gene NR3C2 are associated with diminished memory decline: Results from a longitudinal general-population study

Jan Terock

Corresponding Author

Jan Terock

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany

Department of Psychiatry and Psychotherapy, Helios Hanseklinikum Stralsund, Stralsund, Germany

Correspondence

Jan Terock, Department of Psychiatry and Psychotherapy, University Medicine Greifswald, HELIOS Klinikum Stralsund, Rostocker Chaussee 70, 18437 Stralsund, Germany.

Email: [email protected]

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Sandra Van der Auwera

Sandra Van der Auwera

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany

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Deborah Janowitz

Deborah Janowitz

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany

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Katharina Wittfeld

Katharina Wittfeld

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany

German Center for Neurodegenerative Diseases (DZNE), Greifswald, Germany

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Alexander Teumer

Alexander Teumer

Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany

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Hans J. Grabe

Hans J. Grabe

Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany

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First published: 18 June 2020
Citations: 5

Funding information

Bundesministerium für Bildung und Forschung (Grants No. 01ZZ9603, 01ZZ0103, 01ZZ0403 and 01ZX1614E).

Abstract

Background

The mineralocorticoid receptor (MR) in the brain has a key role in the regulation of the central stress response and is associated with memory performance. We investigated whether the genetic polymorphisms rs5522 and rs2070951 of NR3C2 showed main and interactive effects with childhood trauma on memory decline.

Methods

Declarative memory was longitudinally assessed in 1,318 participants from the community-dwelling Study of Health in Pomerania using the Verbal Learning and Memory Test (VLMT). In a subsample of 377 participants aged 60 and older, the Mini-Mental Status Examination (MMSE) was additionally applied. Mean follow-up time for the VLMT and MMSE were 6.4 and 10.7 years, respectively.

Results

Homozygous carriers of the G allele of rs2070951 (p < .01) and of the A allele of rs5522 (p < .001) showed higher immediate recall of words as compared to carriers of C allele (rs2070951) or the G allele (rs5522). The CG haplotype was associated with decreased recall (p < .001). Likewise, in the subsample of older patients, the AA genotype of rs5522 was associated with higher MMSE scores (p < .05). CG haplotypes showed significantly reduced MMSE scores in comparison to the reference haplotype (β = −0.60; p < .01).

Conclusions

Our results indicate that the GG genotype of rs2070951 as well as the AA genotype of rs5522 are associated with diminished memory decline.

CONFLICTS OF INTEREST

All authors declare no competing interests.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

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