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Romić S, Tepavčević S, Popović T, Zec M, Stojiljković M, Ćulafić T, Bošković M, Korićanac G. Consumption of walnuts suppresses the conversion of palmitic to palmitoleic acid and enhances omega-3 fatty acid metabolism in the heart of fructose-fed rats. Int J Food Sci Nutr 2022; 73:940-953. [PMID: 35918845 DOI: 10.1080/09637486.2022.2107186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Walnut consumption mostly has a positive implication for cardiovascular health. Walnut diet effects on the cardiac fatty acid (FA) metabolism of healthy rats and those with fructose diet-induced metabolic burden were analysed. Both walnuts and fructose increased CD36 transporter level and the nuclear content of some/all of Lipin 1/PPARα/PGC-1 complex partners, as well as cytosolic and nuclear FOXO1. However, fructose, independently of walnuts, increased the content of palmitic (PA), oleic, and vaccenic acid (VA), while in walnut-fed rats failed to increase palmitoleic acid (POA) level and the POA/PA ratio, as well as total MUFA content. In opposite, walnuts reduced the level of PA and VA and increased alpha-linolenic, eicosapentaenoic and docosapentaenoic acid level, regardless of fructose. In conclusion, both fructose and walnuts stimulated the uptake and oxidation of FA in the heart, but the walnuts, opposite to fructose, favourably altered cardiac FA profile in healthy and metabolically compromised rats.
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Affiliation(s)
- Snježana Romić
- Laboratory for Molecular Biology and Endocrinology, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Serbia
| | - Snežana Tepavčević
- Laboratory for Molecular Biology and Endocrinology, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Serbia
| | - Tamara Popović
- Centre of Excellence in Nutrition and Metabolism Research, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Serbia
| | - Manja Zec
- Centre of Excellence in Nutrition and Metabolism Research, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, Serbia.,School of Nutritional Sciences and Wellness, University of Arizona, Tucson, AZ, USA
| | - Mojca Stojiljković
- Laboratory for Molecular Biology and Endocrinology, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Serbia
| | - Tijana Ćulafić
- Laboratory for Molecular Biology and Endocrinology, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Serbia
| | - Maja Bošković
- Laboratory for Radiobiology and Molecular Genetics, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Serbia
| | - Goran Korićanac
- Laboratory for Molecular Biology and Endocrinology, Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Serbia
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