KIBRA single nucleotide polymorphism is associated with hippocampal subfield volumes and cognition across development.

Autor: Homayouni R; Institute of Gerontology, Wayne State University, Detroit, MI, USA.; Department of Psychology, Wayne State University, Detroit, MI, USA., Daugherty AM; Institute of Gerontology, Wayne State University, Detroit, MI, USA.; Department of Psychology, Wayne State University, Detroit, MI, USA., Yu Q; Institute of Gerontology, Wayne State University, Detroit, MI, USA., Raz N; Department of Psychology, Stony Brook University, Stony Brook, NY, USA., Ofen N; Institute of Gerontology, Wayne State University, Detroit, MI, USA. noa.ofen@wayne.edu.; Department of Psychology, Wayne State University, Detroit, MI, USA. noa.ofen@wayne.edu.; Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA. noa.ofen@wayne.edu.
Jazyk: angličtina
Zdroj: Brain structure & function [Brain Struct Funct] 2024 Jan; Vol. 229 (1), pp. 223-230. Date of Electronic Publication: 2023 Oct 18.
DOI: 10.1007/s00429-023-02716-w
Abstrakt: The hippocampus (Hc) consists of cytoarchitectonically and functionally distinct subfields: dentate gyrus (DG), cornu ammonis (CA1-3), and subiculum. In adults, a single nucleotide polymorphism (rs17070145, C→ T) in KIBRA, a gene encoding the eponymous (KIdney-BRAin) protein, is associated with variability in Hc subfield volumes and episodic memory. T-allele carriers have larger DG and CA volumes and better episodic memory compared to C-homozygotes. Little is known, however, about KIBRA's role in the development of the brain and cognition. In a sample of children, adolescents, and young adults (N = 176, ages 5- 25 years), we replicated the adult association between KIBRA T-allele and larger DG and CA volumes but observed no relationship between KIBRA rs17070145 polymorphism and episodic memory. We noted, however, that a general cognitive performance index (IQ) differed across the allelic groups, with the lowest scores among T-homozygotes and the highest among C-homozygotes. Thus, in this developmental sample, KIBRA appears to have opposing effects on regional brain volume and cognition. These influences of KIBRA SNP may stem from associations between developmental reduction in brain volume and gains in cognitive performance-a hypothesis to be tested in longitudinal studies.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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