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Free keywords:
Adolescent
Adult
Aged
Asians/genetics
Blacks/genetics
Brain/*metabolism
Child
Child, Preschool
*Evolution, Molecular
Female
Humans
Infant
Infant, Newborn
Lipid Metabolism/genetics
*Lipidomics
Lipids/genetics
Male
Metabolome/genetics
Middle Aged
Phenotype
Population Surveillance
Prefrontal Cortex/*metabolism
Whites/genetics
Young Adult
Abstract:
Human populations, despite their overwhelming similarity, contain some distinct phenotypic, genetic, epigenetic, and gene expression features. In this study, we explore population differences at yet another level of molecular phenotype: the abundance of non-polar and polar low molecular weight compounds, lipids and metabolites in the prefrontal cortical region of the brain. We assessed the abundance of 1,670 lipids and 258 metabolites in 146 Han Chinese, 97 Western European, and 60 African American individuals of varying ages, covering most of the lifespan. The statistical analysis and logistic regression models both demonstrated extensive lipid and metabolic divergence of the Han Chinese individuals from the other two populations. This divergence was age-dependent, peaking in young adults, and involved metabolites and lipids clustering in specific metabolic pathways.
