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dc.creatorBošković, Maja
dc.creatorŽivković, Maja
dc.creatorKorićanac, Goran
dc.creatorTepavčević, Snežana
dc.creatorZec, Manja
dc.creatorDebeljak-Martačić, Jasmina
dc.creatorStanković, Aleksandra
dc.date.accessioned2023-02-01T10:18:33Z
dc.date.available2023-02-01T10:18:33Z
dc.date.issued2022
dc.identifier.issn1664-042X
dc.identifier.issn1664-042X
dc.identifier.urihttp://rimi.imi.bg.ac.rs/handle/123456789/1273
dc.description.abstractIncreased fructose consumption has been linked with chronic inflammation and metabolic syndrome (MetS). Activation of the renin-angiotensin system (RAS) and NF-κB have been detected in MetS. Walnuts are a rich source of polyunsaturated omega-3 fatty acids (n-3 PUFA) that were suggested to exert anti-inflammatory effects related to cardio-metabolic health. We hypothesized that walnut supplementation has the capacity to revert unfavorable fructose-rich diet (FRD)-induced activation of cardiac RAS and NF-κB in male rats. Due to the lack of similar studies, we investigated the effects of walnut supplementation (6 weeks) on the expression of four RAS molecules (ACE, ACE2, AT1R, and AT2R) and NF-κB in rat heart after FRD (10% w/v, 9 weeks). In addition, we followed the changes in the n-6/n-3 PUFA ratio in the total pool of heart lipids after both treatments to elucidate the walnut effects on fatty acids in the heart. 36 animals (9 per group) participated in the experiment. FRD significantly increased the ACE protein level in the heart (p < 0.001). Walnut supplementation significantly increased the ACE2 protein level in the heart of FRD (p < 0.001). In addition, walnut supplementation showed a significant main effect on the arachidonic acid/eicosapentaenoic acid ratio (p = 0.004). Walnut supplementation significantly reduced this ratio, in comparison with both, the control group (C vs. FW, p < 0.05) and the FRD group (F vs. FW, p < 0.05). However, walnut treatment failed to revert the significant effect of fructose (p < 0.001) on the elevation of NF-κB protein level. Our results suggest a beneficial effect of walnut supplementation on ACE2 protein level and n-6/n-3 PUFA level in the heart of the animal model of MetS. Such results highlight the approach of omega-3-rich walnut supplementation in the stimulation of endogenous production of favorable molecules in the heart which could be an affordable nutritional treatment formaintenance of cardio-metabolic health.
dc.publisherFrontiers Media S.A.
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200017/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceFrontiers in Physiology
dc.subjectwalnuts
dc.subjectfructose-rich diet
dc.subjectmega-3 PUFA
dc.subjectrenin-angiotensin system
dc.subjectNF-κB
dc.titleWalnut supplementation after fructose-rich diet is associated with a beneficial fatty acid ratio and increased ACE2 expression in the rat heart
dc.typearticle
dc.rights.licenseBY
dc.citation.spage942459
dc.citation.volume13
dc.identifier.doi10.3389/fphys.2022.942459
dc.identifier.fulltexthttp://rimi.imi.bg.ac.rs/bitstream/id/2878/Walnut_supplementation_after_fructose-rich_diet_is_associated_with_a_beneficial_fatty_acid_ratio_pub_2022.pdf
dc.type.versionpublishedVersion


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