PPARα L162V polymorphism alters the potential of n‐3 fatty acids to increase lipoprotein lipase activity
Abstract
Omega‐3 fatty acids (FAs) may accelerate plasma triglyceride (TG) clearance by altering lipoprotein lipase (LPL) activity. Yet, the ability of n‐3 FAs to increase LPL activity is dependent on transcription factors such as peroxisome proliferator‐activated receptor alpha (PPARα). The objective was to examine the effects of n‐3 FAs on LPL activity considering the occurrence of PPAR α L162V polymorphism. First, 14 pairs of men either L162 homozygotes or carriers of the V162 allele were supplemented with n‐3 FAs. Second, transient transfections in HepG2 cells, for the L162‐ and V162‐PPARα variants with the peroxisome proliferator‐response element from the human LPL gene, were transactivated with n‐3 FAs. In vivo results demonstrate that the LPL activity increased non‐significantly by 14.4% in L162 homozygotes compared with 6.6% in carriers of the PPAR α‐V162 allele, after n‐3 FA supplementation. Additionally, the L162 homozygotes tended towards an inverse correlation between LPL activities and plasma TG levels. Conversely, carriers of the V162 allele showed no such relationship. In vitro data demonstrates that transcription rates of LPL tended to be higher for the L162‐PPARα than V162‐PPARα after n‐3 FAs activation. Overall, these results indicate that n‐3 FA supplementation increases the transcription rate of LPL to a greater extent in L162‐PPARα than V162‐PPARα.
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Increased activation of the peroxisome proliferator-activated receptor response element of the LPL gene is a potential mechanism for increased LPL mRNA expression.
“A potential mechanism for increased LPL mRNA expression is increased activation of the peroxisome proliferator-activated receptor response element of the LPL gene, which has been demonstrated using a transfection assay [42].”
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- Authors
- Rudkowska, I., Caron‐Dorval, D., Verreault, M., Couture, P., Deshaies, Y., Barbier, O., & Vohl, M.
- Affiliations
- Centre hospitalier de l'Université Laval (CA)
- Institut sur la nutrition et les aliments fonctionnels (INAF) (CA)
- Corresponding author
- Vohl, Marie‐Claude
- Venue
- Molecular Nutrition & Food Research
- Publisher
- Wiley
- Published
- 2010-04
- Volume
- 54
- Issue
- 4
- Pages
- 543-550
- ISSN
- 1613-4125 (ISSN-L)
- 1613-4133
- OpenAlex
- W2062737918
- Cited by
- 36
- References
- 45
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 1 · 2023: 2 · 2022: 5 · 2021: 2 · 2020: 2 · 2018: 2 · 2017: 5 · 2016: 1 · 2015: 3 · 2014: 1 · 2013: 2 · 2012: 4
- FWCI
- 2.25
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Molecular Nutrition & Food Research (publishedVersion)
- PubMed (publishedVersion)
- Corpus Université Laval (Université Laval) (submittedVersion)
- Funders
- Canadian Institutes of Health Research (MOP-200609)
- CIHR Bisby Fellowship
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
- Keywords
- PPARα, omega-3 fatty acids, lipoprotein lipase, plasma triglycerides, triglyceride clearance, peroxisome proliferator response element, dietary supplementation, genetic polymorphism
- MeSH terms
- Adolescent, Adult, Diet, Docosahexaenoic Acids, Erythrocytes, Fatty Acids, Genotype, Carcinoma, Hepatocellular, Humans, Lipids, Lipoprotein Lipase, Liver Neoplasms, Male, Middle Aged, Polymorphism, Genetic, Transfection, Eicosapentaenoic Acid, Fatty Acids, Omega-3, Gene Expression, Cell Line, Tumor, PPAR alpha
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