ArticleBrain and behavior2016
Dopamine pathway gene variants may modulate cognitive performance in the DHS - Mind Study.
Article in Brain and behavior, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 10 citations in OpenAlex.
- PheSom: a term frequency-based method for measuring human phenotype similarity on the basis of MeSH vocabulary.Frontiers in genetics · 2023Article
- Parkinson disease-associated cognitive impairment.Nature reviews. Disease primers · 2021Review
- Genome-wide association studies of severe P. falciparum malaria susceptibility: progress, pitfalls and prospects.BMC medical genomics · 2019Review
- Moderating effect of mode of delivery on the genetics of intelligence: Explorative genome-wide analyses in ALSPAC.Brain and behavior · 2018Article
- Pharmacogenomics in type 2 diabetes: oral antidiabetic drugs.The pharmacogenomics journal · 2016Review
- Dopamine pathway gene variants may modulate cognitive performance in the DHS - Mind Study.Brain and behavior · 2016Article
- Cardiovascular dysautonomia and cognitive impairment in Parkinson's disease (Review).Medicine internationalReview
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundThere is an established association between type 2 diabetes and accelerated cognitive decline. The exact mechanism linking type 2 diabetes and reduced cognitive function is less clear. The monoamine system, which is extensively involved in cognition, can be altered by type 2 diabetes status. Thus, this study hypothesized that sequence variants in genes linked to dopamine metabolism and associated pathways are associated with cognitive function as assessed by the Digit Symbol Substitution Task, the Modified Mini-Mental State Examination, the Stroop Task, the Rey Auditory-Verbal Learning Task, and the Controlled Oral Word Association Task for Phonemic and Semantic Fluency in the Diabetes Heart Study, a type 2 diabetes-enriched familial cohort (n = 893).
methodsTo determine the effects of candidate variants on cognitive performance, genetic association analyses were performed on the well-documented variable number tandem repeat located in the 3' untranslated region of the dopamine transporter, as well as on single-nucleotide polymorphisms covering genes in the dopaminergic pathway, the insulin signaling pathway, and the convergence of both. Next, polymorphisms in loci of interest with strong evidence for involvement in dopamine processing were extracted from genetic datasets available in a subset of the cohort (n = 572) derived from Affymetrix(®) Genome-Wide Human SNP Array 5.0 and 1000 Genomes imputation from this array.
resultsThe candidate gene analysis revealed one variant from the DOPA decarboxylase gene, rs10499695, to be associated with poorer performance on a subset of Rey Auditory-Verbal Learning Task measuring retroactive interference (P = 0.001, β = -0.45). Secondary analysis of genome-wide and imputed data uncovered another DOPA decarboxylase variant, rs62445903, also associated with retroactive interference (P = 7.21 × 10(-7), β = 0.3). These data suggest a role for dopaminergic genes, specifically a gene involved in regulation of dopamine synthesis, in cognitive performance in type 2 diabetes.
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