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Race and gender differences in cord blood lipoproteins
C M Loughrey1, E Rimm, G Heiss
1Department of Laboratory Medicine, Children's Hospital, Harvard Medical School, 300 Longwood Ave., Boston, MA 02115, USA. clodagh.loughrey@a1.tch.harvard.edu
Insights
Genetic factors significantly influence race and gender differences in lipoprotein and apolipoprotein levels from birth. These early disparities in neonates mirror those seen in adults, suggesting a genetic basis for cardiovascular health variations.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Established race and gender disparities in adult lipoprotein and apolipoprotein levels.
- Observed similar disparities in children, suggesting potential genetic influences.
Purpose of the Study:
- To investigate genetic factors contributing to race and gender differences in lipoprotein and apolipoprotein concentrations.
- To examine these differences in neonates as an indicator of early genetic influence.
Main Methods:
- Analysis of cord blood lipoprotein and apolipoprotein concentrations.
- Comparison between Black and White neonates of both sexes.
- Statistical control for gestational age and growth parameters.
Main Results:
- Lipoprotein and apolipoprotein patterns in neonates mirrored those found in adults and children.
- Significant differences were observed between racial groups (Black vs. White) and sexes (male vs. female).
Conclusions:
- Findings support a significant genetic component in the etiology of lipoprotein concentration differences across race and gender groups.
- Early-life disparities indicate a foundational genetic influence on lipid metabolism and cardiovascular risk.
Abstract:
Race and gender differences in lipoproteins and apolipoproteins have repeatedly been demonstrated in adults. The same disparities have been observed in children of different race and gender, implying that these differences may be influenced by genetic factors. To further explore this hypothesis, cord blood concentrations of both lipoproteins and apolipoproteins were examined in black and white neonates of both sexes. Results were controlled for the observed effects of gestational age and growth parameters. Similar patterns of lipoprotein differences to those observed in adults and children were also detected between black and white, and between male and female neonates. These findings support the concept that the aetiology of the difference in lipoprotein concentration observed between race and gender groups includes a significant genetic component.