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Dietary Oxidized Linoleic Acids Modulate Fatty Acids in Mice
Chinedu C Ochin1, Thomas Wilson1, Mahdi Garelnabi1
1Department of Biomedical and Nutritional Sciences, University of Massachusetts, Lowell, MA, USA.
Journal of Lipid and Atherosclerosis
|June 3, 2022
Summary
Dietary oxidized linoleic acid disrupts fatty acid metabolism in mice. This intake elevates long chain fatty acids (LCFAs), which are precursors to bioactive molecules, impacting cardiovascular health.
Area of Science:
- Biochemistry
- Nutrition Science
- Cardiovascular Research
Background:
- Elevated oxidized lipids and abnormal lipid accumulation are linked to atheromatous plaque formation and cardiovascular diseases.
- Understanding the impact of dietary oxidized lipids on lipid metabolism is crucial for preventing cardiovascular conditions.
Purpose of the Study:
- To investigate how dietary oxidized linoleic acid affects the distribution of long chain fatty acids (LCFAs) in the liver compared to plasma in mice.
- To determine the dose-dependent effects of oxidized linoleic acid on LCFA profiles.
Main Methods:
- C57BL/6 male mice were divided into four groups receiving standard chow, linoleic acid, or oxidized linoleic acid at two different concentrations.
- Liver and plasma samples were analyzed for LCFAs (palmitic acid, stearic acid, oleic acid, linoleic acid, arachidonic acid) using gas chromatography-mass spectrometry (GC-MS).
Main Results:
- Gas chromatography-mass spectrometry (GC-MS) analysis confirmed LCFA identification with high precision (CV% 1.81-5.28%).
- Correlation analysis revealed significant differences in liver and plasma lipid profiles between control and oxidized linoleic acid-fed groups, with notable variations in fatty acid percentages.
Conclusions:
- Sustained consumption of oxidized linoleic acid-rich diets disrupts normal fatty acid metabolism.
- Increased intake of oxidized linoleic acid leads to elevated concentrations of LCFAs, which are precursors for bioactive molecules relevant to disease development.
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