Targeted neurogenesis pathway-based gene analysis identifies ADORA2A associated with hippocampal volume in mild cognitive impairment and Alzheimer's disease

Alzheimer's Disease Neuroimaging Initiative (ADNI)

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Alzheimer's disease (AD) patients display hippocampal atrophy, memory impairment, and cognitive decline. New neurons are generated throughout adulthood in 2 regions of the brain implicated in AD, the dentate gyrus of the hippocampus and the subventricular zone of the olfactory bulb. Disruption of this process contributes to neurodegenerative diseases including AD, and many of the molecular players in AD are also modulators of adult neurogenesis. However, the genetic mechanisms underlying adult neurogenesis in AD have been underexplored. To address this gap, we performed a gene-based association analysis in cognitively normal and impaired participants using neurogenesis pathway-related candidate genes curated from existing databases, literature mining, and large-scale genome-wide association study findings. A gene-based association analysis identified adenosine A2a receptor (ADORA2A) as significantly associated with hippocampal volume and the association between rs9608282 within ADORA2A and hippocampal volume was replicated in the meta-analysis after multiple comparison adjustments (p = 7.88 × 10−6). The minor allele of rs9608282 in ADORA2A is associated with larger hippocampal volumes and better memory.

Original languageEnglish (US)
Pages (from-to)92-103
Number of pages12
JournalNeurobiology of Aging
Volume60
DOIs
StatePublished - Dec 1 2017

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Neurogenesis
Alzheimer Disease
Genes
Social Adjustment
Parahippocampal Gyrus
Purinergic P1 Receptors
Lateral Ventricles
Olfactory Bulb
Genome-Wide Association Study
Dentate Gyrus
Neurodegenerative Diseases
Atrophy
Meta-Analysis
Alleles
Cognitive Dysfunction
Databases
Neurons
Brain

Keywords

  • ADORA2A
  • Alzheimer's disease
  • Gene-based association analysis
  • Hippocampal volume
  • Memory
  • Neurogenesis
  • NMDA-receptor antagonist

ASJC Scopus subject areas

  • Neuroscience(all)
  • Aging
  • Developmental Biology
  • Geriatrics and Gerontology
  • Clinical Neurology

Cite this

Targeted neurogenesis pathway-based gene analysis identifies ADORA2A associated with hippocampal volume in mild cognitive impairment and Alzheimer's disease. / Alzheimer's Disease Neuroimaging Initiative (ADNI).

In: Neurobiology of Aging, Vol. 60, 01.12.2017, p. 92-103.

Research output: Contribution to journalArticle

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abstract = "Alzheimer's disease (AD) patients display hippocampal atrophy, memory impairment, and cognitive decline. New neurons are generated throughout adulthood in 2 regions of the brain implicated in AD, the dentate gyrus of the hippocampus and the subventricular zone of the olfactory bulb. Disruption of this process contributes to neurodegenerative diseases including AD, and many of the molecular players in AD are also modulators of adult neurogenesis. However, the genetic mechanisms underlying adult neurogenesis in AD have been underexplored. To address this gap, we performed a gene-based association analysis in cognitively normal and impaired participants using neurogenesis pathway-related candidate genes curated from existing databases, literature mining, and large-scale genome-wide association study findings. A gene-based association analysis identified adenosine A2a receptor (ADORA2A) as significantly associated with hippocampal volume and the association between rs9608282 within ADORA2A and hippocampal volume was replicated in the meta-analysis after multiple comparison adjustments (p = 7.88 × 10−6). The minor allele of rs9608282 in ADORA2A is associated with larger hippocampal volumes and better memory.",
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