Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 33, Pages 7371-7380Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b02942
Keywords
beta-glucans; polysaccharides; dietary fibers; cholesterol; Pleurotus ostreatus; Agaricus bisporus; Lentinus edodes; oyster mushroom; shiitake mushroom; white button mushroom; low-density array (LDA)
Funding
- national R+D program from Spanish Ministry of Science and Innovation [AGL2010-21537]
- regional program from Community of Madrid (Spain) [ALIBIRD-CM S2009/AGR-1469]
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Mushrooms are a source of dietary fiber (DF) with a cholesterol-lowering effect. However, their underlying mechanisms are poorly understood. The effect of DF-enriched fractions from three mushrooms species on cholesterol-related expression was studied in vitro. The Pleurotus ostreatus DF fraction (PDF) was used in mice models to assess its potential palliative or preventive effect against hypercholesterolemia. PDF induced a transcriptional response in Caco-2 cells, suggesting a possible cholesterol-lowering effect. In the palliative setting, PDF reduced hepatic triglyceride likely because Dgat1 was down-regulated. However, cholesterol-related biochemical data showed no changes and no relation with the observed transcriptional modulation. In the preventive setting, PDF modulated cholesterol-related genes expression in a manner similar to that of simvastatin and ezetimibe in the liver, although no changes in plasma and liver biochemical data were induced. Therefore, PDF may be useful reducing hepatic triglyceride accumulation. Because it induced a molecular response similar to hypocholesterolemic drugs in liver, further dose-dependent studies should be carried out.
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