1
|
Aldana-Hernández P, Azarcoya-Barrera J, van der Veen JN, Leonard KA, Zhao YY, Nelson R, Goruk S, Field CJ, Curtis JM, Richard C, Jacobs RL. Dietary phosphatidylcholine supplementation reduces atherosclerosis in Ldlr -/- male mice 2. J Nutr Biochem 2021; 92:108617. [PMID: 33705949 DOI: 10.1016/j.jnutbio.2021.108617] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 11/10/2020] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
Choline is an essential nutrient required for various biological processes. Eggs, dairy, and meat are rich in phosphatidylcholine (PC), whereas cereal and legumes are rich in free choline. Excess dietary choline leads to increase plasma trimethylamine N-oxide (TMAO). Epidemiological studies suggest that plasma TMAO is a biomarker for atherosclerosis and it has been suggested that a lower intake of eggs and meat would reduce choline consumption and thus reduce atherosclerosis development. To investigate whether the form of dietary choline influences atherosclerosis development in Ldlr-/-, we randomly fed Ldlr-/-male mice (aged 8 - 10 wk) one of the three 40% (calories) high fat diets (with 0.5% w/w of cholesterol): Control (0.1% w/w free-choline, CON), choline-supplemented (0.4% free-choline, CS), or PC-supplemented (0.1% free-choline and 0.3% choline from PC, PCS). After 12-wk of dietary intervention, the animals were euthanized and tissues and blood collected. Aortic atherosclerotic plaque area, plasma choline, lipid metabolites, and spleen and peripheral blood cell phenotypes were quantified. Surprisingly, the PCS group had significantly lower atherosclerotic lesions while having 2-fold higher plasma TMAO levels compared with both CON and CS groups (P<0.05). In the fasting state, we found that PCS decreased plasma very low-density lipoprotein-cholesterol (VLDL-C) and apolipoprotein B48 (APOB48), and increased plasma high-density lipoprotein-cholesterol (HDL-C). However, very low-density lipoprotein (VLDL) secretion was not affected by dietary treatment. We observed lower levels of circulating pro-atherogenic chemokines in the PCS group. Our study suggests that increased dietary PC intake does not induce a pro-atherogenic phenotype.
Collapse
Affiliation(s)
- Paulina Aldana-Hernández
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - Jessy Azarcoya-Barrera
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | | | - Kelly-Ann Leonard
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - Yuan-Yuan Zhao
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - Randal Nelson
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Susan Goruk
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - Catherine J Field
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - Jonathan M Curtis
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - Caroline Richard
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada
| | - René L Jacobs
- Food and Nutritional Science, Department of Agricultural, University of Alberta, Edmonton, Alberta, Canada; Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada.
| |
Collapse
|