Abstract
Dietary supplementation with marine omega-3 polyunsaturated fatty acids (n-3 PUFA) can have beneficial effects on a number of risk factors for cardiovascular disease (CVD). We compared the effects of two n-3 PUFA rich food supplements (freeze-dried Odontella aurita and fish oil) on risk factors for CVD. Male rats were randomly divided into four groups of six animals each and fed with the following diets: control group (C) received a standard diet containing 7Â % lipids; second group (HF high fat) was fed with a high-fat diet containing 40Â % lipids; third group (HFFO high fat+fish oil) was fed with the high-fat diet supplemented with 0.5Â % fish oil; and fourth group (HFOA high fat+O. aurita) received the high-fat diet supplemented with 12Â % of freeze-dried O. aurita. After 8Â weeks rats fed with the high-fat diet supplemented with O. aurita displayed a significantly lower bodyweight than those in the other groups. Both the microalga and the fish oil significantly reduced insulinemia and serum lipid levels. O. aurita was more effective than the fish oil in reducing hepatic triacyglycerol levels and in preventing high-fat diet-induced steatosis. O. aurita and fish oil also reduced platelet aggregation and oxidative status induced by high fat intake. After an OA supplementation, the adipocytes in the HFOA group were smaller than those in the HF group. Freeze-dried O. aurita showed similar or even greater biological effects than the fish oil. This could be explained by a potential effect of the n-3 PUFA but also other bioactive compounds of the microalgae.
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Abbreviations
- AT:
-
Adipose tissue
- C:
-
Control diet
- CVD:
-
Cardiovascular disease
- DHA:
-
Docosahexaenoic acid
- DPA:
-
Docosapentaenoic acid
- EPA:
-
Eicosapentaenoic acid
- FO:
-
Fish oil
- GPx:
-
Glutathione peroxidase
- HF:
-
High fat diet
- HFFO:
-
High fat + fish oil diet
- HFOA:
-
High fat + Odontella aurita diet
- MDA:
-
Malondialdehyde
- OA:
-
Odontella aurita
- PRP:
-
Platelet rich plasma
- PUFA:
-
Polyunsaturated fatty acid (s)
- SFA:
-
Saturated fatty acid
- TxB2 :
-
Thromboxane B2
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Acknowledgments
This study was supported by the PHC-Volubilis program No MA/21/61 with joint financial support from the French Foreign Affairs Ministry, the Moroccan Ministry of Research and Higher Education and the FP 7 European Project GIAVAP (Genetic Improvement of Algae for Value Added Products). The authors also thank M. Ghosh for reviewing the English text in the first version of the manuscript.
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Haimeur, A., Mimouni, V., Ulmann, L. et al. Fish Oil and Microalga Omega-3 as Dietary Supplements: A Comparative Study on Cardiovascular Risk Factors in High-Fat Fed Rats. Lipids 51, 1037–1049 (2016). https://doi.org/10.1007/s11745-016-4177-2
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DOI: https://doi.org/10.1007/s11745-016-4177-2