Apolipoprotein C3 polymorphisms, cognitive function and diabetes in Caribbean origin Hispanics.
Caren E Smith1, Katherine L Tucker, Tammy M Scott
1Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts, United States of America.
Plos One
|May 9, 2009
Summary
Apolipoprotein C3 (APOC3) gene variations are linked to cognitive decline and metabolic issues in Caribbean Hispanics with diabetes. These APOC3 polymorphisms impact glucose and lipid metabolism, affecting cognitive function.
Area of Science:
- Genetics and Metabolism
- Neuroscience and Public Health
Background:
- Apolipoprotein C3 (APOC3) influences triglyceride metabolism and is regulated by insulin, linking glucose and lipid metabolism.
- APOC3 gene polymorphisms are associated with metabolic dysregulation, but their connection to cognitive decline and diabetes requires further investigation.
Purpose of the Study:
- To investigate the relationship between APOC3 gene polymorphisms (m482 and 3u386) and cognitive function in Caribbean Hispanics.
- To determine if metabolic differences mediate the association between APOC3 genotype and cognition.
- To examine the influence of diabetes status on these relationships.
Main Methods:
- Examined APOC3 single nucleotide polymorphisms (SNPs) m482 (rs2854117) and 3u386 (rs5128) in 991 Caribbean Hispanic adults (aged 45-74).
- Assessed cognitive measures, metabolic parameters (glucose, triglycerides, total cholesterol), and diabetes status.
- Utilized multivariate regression models to analyze associations.
Main Results:
- APOC3 m482 AA genotype in diabetic subjects was linked to lower executive function, Stroop scores, higher glucose, and total cholesterol.
- APOC3 3u386 GC/GG genotype in diabetic subjects showed higher triglycerides, total cholesterol, and glucose.
- Cognitive and metabolic measures significantly differed based on type II diabetes status.
Conclusions:
- Significant associations were found between APOC3 polymorphisms, cognitive impairment, and metabolic dysregulation in Caribbean Hispanics with diabetes.
- These findings highlight the role of APOC3 in the interplay between metabolic health and cognitive function in this population.
- Further research is recommended to explore these associations in diverse populations.
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