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Wayne State cholesterol study shows algal extracts may counter effects of high fat diets
Date:12/20/2013

ted), 3, 7, 10, 14, and 21 days while still on the high fat diet. The results indicated that the PAZ extracts may be a useful option for improving the plasma cholesterol profile despite the hypercholesterolemic state induced by a high fat diet.

Specifically, "bad" cholesterol concentrations significantly decreased in all subjects consuming the PAZ extracts, compared to those who were not treated. Furthermore, increased levels of "good" cholesterol could be seen as early as Day Three for that same group. By Day 21, "good" cholesterol levels increased by 28% and "bad" cholesterol levels decreased by 30%.

Additionally, metabolomics analysis was conducted to analyze the concentration of certain metabolites (small molecules which are byproducts of normal metabolic functions) in the blood. Administering the PAZ extract correlated with significantly decreased levels of several metabolites that are independent predictors of increased risk of atherosclerosis and cardiovascular disease.

Gene expression analysis was also conducted, to get a deeper insight into the increase in plasma HDL-c levels. Thus the expression levels (mRNA) of proteins involved in HDL-c metabolism were evaluated. By Day Ten, subjects showed a threefold increase in the gene expression of APO A1, a major protein associated with the production of HDL particles, the "good" cholesterol which increased sixfold by Day 21.

"To put this in perspective, the benefit of raising HDL can be explained by examining how these "good" cholesterol particles function: They play a key role in removing excess cholesterol from cell storage and transporting that cholesterol to the liver for excretion from the body," said Amy Steffek, Ph.D., HEPI Director of Research & Development. "They also have other properties that promote and protect cardiovascular health, and serve as an independent predictor of cardiovascular risk. To simplify, one can lower risk of cardiovascular disease by increasing
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Contact: Julie O'Connor
julie.oconnor@wayne.edu
313-577-8845
Wayne State University - Office of the Vice President for Research
Source:Eurekalert  

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