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Genetic variation in galectin-3 gene associates with cognitive function at old age
Stella Trompet1, Wouter Jukema, Simon P Mooijaart
1Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands. s.trompet@lumc.nl
Neurobiology of Aging
|June 8, 2012
Summary
Genetic variations in the LGALS3 gene, which codes for galectin-3, are linked to cognitive function in older adults. These variations may influence inflammation and attention, suggesting a role in age-related cognitive decline.
Area of Science:
- Neuroscience
- Genetics
- Immunology
Background:
- Inflammation is a key factor in age-related cognitive decline and dementia.
- Galectin-3 is a protein involved in both acute and chronic inflammatory processes.
Purpose of the Study:
- To investigate the association between genetic variations in the LGALS3 gene and cognitive function in an elderly cohort.
- To explore the relationship between LGALS3 gene polymorphisms, inflammation markers, and cognitive performance.
Main Methods:
- Genotyping of three single nucleotide polymorphisms (SNPs) in the LGALS3 gene (rs4644, rs4652, rs1009977) in 5804 participants from the PROSPER study.
- Assessment of baseline cognitive function and C-reactive protein (CRP) levels.
- Longitudinal analysis of cognitive performance over time.
Main Results:
- Carriers of variant alleles in the LGALS3 gene exhibited significantly higher baseline C-reactive protein concentrations.
- Individuals with variant LGALS3 alleles showed significantly worse baseline cognitive performance compared to wild-type carriers.
- Longitudinal analysis revealed that variant allele carriers had poorer performance on attention tasks.
Conclusions:
- Genetic variations in the LGALS3 gene may be associated with cognitive function in the elderly.
- The findings suggest a potential link between LGALS3 genetic polymorphisms, inflammation, and cognitive performance, particularly attention.
- Further research is needed to validate these associations and elucidate the underlying mechanisms.
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