NDLI: Enzyme-resistant fractions of beans lowered serum cholesterol and increased sterol excretions and hepatic mRNA levels in rats

Content Provider	Springer Nature Link
Author	Han, Kyu Ho Fukushima, Michihiro Kato, Teruhiko Kojima, Michiyuki Ohba, Kiyoshi Shimada, Ken ichiro Sekikawa, Mitsuo Naka, Masuo
Copyright Year	2003
Abstract	Feeding rats beans with resistant starch reduces their serum cholesterol concentration; however, the mechanism by which this occurs is not fully understood. We examined the effects of enzyme-resistant fractions of adzuki (Vigna angularis) and tebou (Phaseolus vulgaris, var.) beans on serum cholesterol and hepatic mRNA in rats. Rats were fed a cholesterol-free diet with 50 g of cellulose powder (CP)/kg, 50 g of an enzyme-resistant fraction of adzuki starch (AS)/kg, or 50 g of an enzyme-resistant fraction of tebou starch (TS)/kg diet for 4 wk. There were no significant differences in body weight, liver weight, and cecum contents among the groups, nor was there a significant difference in food intake among the groups. The levels of serum total cholesterol, VLDL + intermediate density lipoprotein + LDL-cholesterol, and HDL cholesterol in the AS and TS groups were significantly (P<0.05) lower than in the CP group throughout the feeding period. Total hepatic cholesterol in the CP group was significantly (P<0.05) lower than in the AS and TS groups, fecal cholesterol excretion in the TS group was significantly (P<0.05) greater than in the CP and AS groups, and the fecal total bile acid concentrations in the AS and TS groups were significantly (P<0.05) higher than in the CP group. Cecal acetate, propionate, and n-butyrate concentrations in the AS and TS groups were significantly (P<0.05) higher than in the CP group. The level of hepatic scavenger receptor class B1 (SR-B1) mRNA in the TS group was significantly (P<0.05) higher than in the CP group, and the levels of hepatic cholesterol 7α-hydroxylase mRNA in the AS and TS groups were significantly (P<0.05) higher than in the CP group. These results suggest that AS and TS have a serum cholesterol-lowering function due to the enhanced levels of hepatic SR-B1 and cholesterol 7α-hydroxylase mRNA.
Starting Page	919
Ending Page	924
Page Count	6
File Format	PDF
ISSN	00244201
Journal	Lipids
Volume Number	38
Issue Number	9
e-ISSN	15589307
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nutrition Bioorganic Chemistry Medicinal Chemistry Medical Biochemistry Biochemistry Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Organic Chemistry Biochemistry

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