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Published on: July 11, 2014
Familial resemblance for serum metabolite concentrations
Harmen H M Draisma1, Marian Beekman, René Pool
1Department of Biological Psychology, Faculty of Psychology and Education, VU University Amsterdam, The Netherlands.
This study investigated the heritability of over 100 serum metabolites. Most metabolite concentrations showed significant familial resemblance, largely due to genetic factors, supporting their potential as disease biomarkers.
Area of Science:
- Human genetics
- Metabolomics
- Biomarker discovery
Background:
- Metabolomics offers insights into cellular metabolism.
- Understanding metabolite heritability is crucial for identifying disease biomarkers.
- Familial resemblance in metabolite concentrations can indicate genetic or environmental influences.
Purpose of the Study:
- To assess the heritability of human serum metabolite concentrations.
- To evaluate the suitability of metabolites as biomarkers for disease.
- To differentiate genetic from environmental contributions to metabolite levels.
Main Methods:
- Utilized a targeted metabolomics platform to measure over 100 serum metabolites.
- Analyzed data from two independent cohorts: Netherlands Twin Register and Leiden Longevity Study.
- Calculated monozygotic twin correlations, midparent-offspring regression, and spouse correlations.
Main Results:
- Significant monozygotic twin correlations were found for 121 out of 123 metabolites.
- Heritability was confirmed by midparent-offspring regression.
- High heritability was observed for specific metabolites including free carnitine, serine, threonine, and phosphatidylcholine acyl-alkyl C40:3.
- Octenoylcarnitine showed evidence of shared environmental influence.
Conclusions:
- The familial resemblance of most serum metabolite concentrations is predominantly genetic.
- These findings enhance the understanding of heritability for fasting serum metabolites.
- The results support the use of these metabolites in biomarker research for diseases.
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