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English Abstract
Journal Article
[Effect of green alga Ulva lactuca polysaccharides supplementation on blood pressure and on atherogenic risk factors, in rats fed a high fat diet].
Annales de Cardiologie et D'angéiologie 2018 June
AIM OF THE STUDY: To highlight the benefits of green alga Ulva lactuca polysaccharides supplementation on blood pressure and atherogenic risk factors in rats fed a high fat diet.
METHODS: Wistar male rats were fed a high fat diet (30% sheep fat) for 3 months. At an average body weight (BW) of 360g, the rats (n=18) were divided into 3 groups and consumed, for 28 days, either a high fat diet (HFD) or a high fat diet enriched with 1% of whole green algae (WGA) powder or with 1% of its polysaccharides (PLS).
RESULTS: In HFD, WGA and PLS supplementation reduced BW and food intake. WGA and PLS compared to HFD reduced systolic (PAS) (-17% and -19%) and diastolic (PAD) blood pressure (-38% and -39%), serum glucose (-37% and -30%, respectively), insulinemia (-55% and -74%, respectively), serum and hepatic total lipids, triglycerides, total cholesterol levels, as well as the total cholesterol concentration of low and very low density lipoproteins. The same, atherogenicity ratios and membrane fluidity decreased in the WGA and PLS vs HFD while lecithin: cholesterol acyltransferase (LCAT) activity increased (51 and 41% respectively).
CONCLUSION: Ulva lactuca and its polysaccharides, one of the bioactive compounds of this macroalga, seem to have hypotensive, hypoglycemic, hypolipaemic and antiatherogenic properties that can correct or prevent certain cardiovascular complications linked to a high fat diet.
METHODS: Wistar male rats were fed a high fat diet (30% sheep fat) for 3 months. At an average body weight (BW) of 360g, the rats (n=18) were divided into 3 groups and consumed, for 28 days, either a high fat diet (HFD) or a high fat diet enriched with 1% of whole green algae (WGA) powder or with 1% of its polysaccharides (PLS).
RESULTS: In HFD, WGA and PLS supplementation reduced BW and food intake. WGA and PLS compared to HFD reduced systolic (PAS) (-17% and -19%) and diastolic (PAD) blood pressure (-38% and -39%), serum glucose (-37% and -30%, respectively), insulinemia (-55% and -74%, respectively), serum and hepatic total lipids, triglycerides, total cholesterol levels, as well as the total cholesterol concentration of low and very low density lipoproteins. The same, atherogenicity ratios and membrane fluidity decreased in the WGA and PLS vs HFD while lecithin: cholesterol acyltransferase (LCAT) activity increased (51 and 41% respectively).
CONCLUSION: Ulva lactuca and its polysaccharides, one of the bioactive compounds of this macroalga, seem to have hypotensive, hypoglycemic, hypolipaemic and antiatherogenic properties that can correct or prevent certain cardiovascular complications linked to a high fat diet.
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