Daily consumption of black soybean (Glycine max L.) seed coat polyphenols attenuates dyslipidemia in apolipoprotein E-deficient mice
2020
Abstract Black soybean (Glycine max L.) seed coat extract (BE) is rich in polyphenols, including epicatechin, procyanidin, and cyanidin-3-glucoside. We evaluated the effects of daily consumption of BE in apolipoprotein E-deficient (ApoE−/−) mice. ApoE−/− and wild-type BALB/c mice were fed a 20% fat diet with or without 1% BE for 8 weeks. Bodyweight was unaffected by BE. BE supplementation significantly lowered serum and hepatic total cholesterol and hepatic triglyceride levels. Hepatic mRNA expression of cholesterol 7α-hydroxylase (Cyp7a1) and peroxisome proliferator-activated receptor α (Pparα) were significantly stimulated in ApoE−/− mice consuming the BE diet. These effects were characteristic in ApoE−/− mice, but not in their corresponding wild type. In conclusion, it is clear that dietary consumption of BE affected blood and hepatic levels of cholesterol and triglyceride in ApoE−/− mice, and consequently exerted preventive effects for dyslipidemia. Putative mechanisms include the upregulation of hepatic Cyp7a1 and Pparα mRNA expression.
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