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Beneficial effects of linum usitatissimum L. on dyslipidemia, oxidative stress and inflammatory cytokines in hypercholesterolemic rats

Sarra Dali (Département de Biologie Laboratoire de Nutrition Clinique et Métabolique, Université Oran 1 Faculté des Sciences de la Nature et la Vie, Oran, Algeria)
Djamil Krouf (Département de Biologie Laboratoire de Nutrition Clinique et Métabolique, Université Oran 1 Faculté des Sciences de la Nature et la Vie, Oran, Algeria)
Zoheir Mellouk (Département de Biologie Laboratoire de Physiologie de la Nutrition et de Sécurité Alimentaire, Université Oran 1, Faculté des Sciences de la Nature et la Vie, Oran, Algeria)
Nawal Taleb-Dida (Département de Biologie Laboratoire de Nutrition Clinique et Métabolique, Université Oran 1 Faculté des Sciences de la Nature et la Vie, Oran, Algeria)

Nutrition & Food Science

ISSN: 0034-6659

Article publication date: 15 March 2019

Issue publication date: 12 August 2019

Abstract

Purpose

This paper aims to study the effects of a diet supplemented with flaxseeds on dyslipidemia, oxidative stress and proinflammatory cytokines, in rats consuming a high-cholesterol diet.

Design/methodology/approach

Male Wistar rats (n = 30) weighing (250 ± 5 g) of which 10 were control and 20 were rendered hypercholesterolemic (HC) by feeding a diet enriched with 1% of cholesterol, for 15 days. After this phase, rats were divided into two groups; hypercholesterolemic group (HC) (n = 10), fed 20% casein diet enriched with 1% cholesterol; and hypercholesterolemic rats fed the same diet (n = 10), but additionally supplemented with flaxseeds (Linum usitatissimum) (Lu) powder, i.e. HC-Lu. Animals of the control group (n = 10) were fed the casein diet. All the animals were maintained on the respective diets for four weeks.

Findings

This study showed that in HC-Lu as compared to HC group, plasma total cholesterol, triacylglycerols and non-HDL cholesterol concentrations were respectively 2.4-, 1.5- and 3-fold lower. Also, the lipid peroxidation was reduced in red blood cells, organs (liver, heart and aorta) and lipoproteins (HDL2, HDL3 and VDL-LDL). A higher superoxide dismutase activity was observed in liver (+61%), heart (+62%) and aorta (+59%), whereas plasma proinflammatory cytokine (IL-1beta and IL-6) levels were decreased.

Originality/value

These results suggest that flaxseeds help to reduce hypercholesterolemia, oxidative stress and inflammation in patients with hypercholesterolemia.

Keywords

Acknowledgements

This research was supported by the Algerian Ministry of Higher Education and Scientific Research.

Conflicts of interests: The authors report no conflicts of interest in this work.

Citation

Dali, S., Krouf, D., Mellouk, Z. and Taleb-Dida, N. (2019), "Beneficial effects of linum usitatissimum L. on dyslipidemia, oxidative stress and inflammatory cytokines in hypercholesterolemic rats", Nutrition & Food Science, Vol. 49 No. 4, pp. 777-790. https://doi.org/10.1108/NFS-10-2018-0269

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited