Transcriptome-based Identification of Antioxidative Gene Expression After Fish Oil Supplementation in Normo- and Dyslipidemic Men
Overview
Authors
Affiliations
Background: The beneficial effects of omega-3 polyunsaturated fatty acids (n-3 PUFAs), especially in dyslipidemic subjects with a high risk of cardiovascular disease, are widely described in the literature. A lot of effects of n-3 PUFAs and their oxidized metabolites are triggered by regulating the expression of genes. Currently, it is uncertain if the administration of n-3 PUFAs results in different expression changes of genes related to antioxidative mechanisms in normo- and dyslipidemic subjects, which may partly explain their cardioprotective effects. The aim of this study was to investigate the effects of n-3 PUFA supplementation on expression changes of genes involved in oxidative processes.
Methods: Ten normo- and ten dyslipidemic men were supplemented for twelve weeks with fish oil capsules, providing 1.14 g docosahexaenoic acid and 1.56 g eicosapentaenoic acid. Gene expression levels were determined by whole genome microarray analysis and quantitative real-time polymerase chain reaction (qRT-PCR).
Results: Using microarrays, we discovered an increased expression of antioxidative enzymes and a decreased expression of pro-oxidative and tissue enzymes, such as cytochrome P450 enzymes and matrix metalloproteinases, in both normo- and dyslipidemic men. An up-regulation of catalase and heme oxigenase 2 in both normo- and dyslipidemic subjects and an up-regulation of cytochrome P450 enzyme 1A2 only in dyslipidemic subjects could be observed by qRT-PCR analysis.
Conclusions: Supplementation of normo- and dyslipidemic subjects with n-3 PUFAs changed the expression of genes related to oxidative processes, which may suggest antioxidative and potential cardioprotective effects of n-3 PUFAs. Further studies combining genetic and metabolic endpoints are needed to verify the regulative effects of n-3 PUFAs in antioxidative gene expression to better understand their beneficial effects in health and disease prevention.
Trial Registration: ClinicalTrials.gov (ID: NCT01089231).
Grzybkowska A, Anczykowska K, Antosiewicz J, Olszewski S, Dzitkowska-Zabielska M, Tomczyk M Int J Mol Sci. 2023; 24(7).
PMID: 37047706 PMC: 10094777. DOI: 10.3390/ijms24076734.
Velasque M, Branchini G, Catarina A, Bettoni L, Fernandes R, da Silva A J Clin Exp Hepatol. 2023; 13(1):64-74.
PMID: 36647406 PMC: 9840085. DOI: 10.1016/j.jceh.2022.07.001.
Mirastschijski U, Schwab I, Coger V, Zier U, Rianna C, He W Sci Rep. 2020; 10(1):2581.
PMID: 32054903 PMC: 7018835. DOI: 10.1038/s41598-020-59394-5.
Antonini R, Scaini G, Michels M, Matias M, Schuck P, Ferreira G Metab Brain Dis. 2019; 35(2):295-303.
PMID: 31828693 DOI: 10.1007/s11011-019-00525-x.
Yang J, Fernandez-Galilea M, Martinez-Fernandez L, Gonzalez-Muniesa P, Perez-Chavez A, Martinez J Nutrients. 2019; 11(4).
PMID: 31003450 PMC: 6521137. DOI: 10.3390/nu11040872.