title: Dietary fat content modulates the hypolipidemic effect of dietary inulin in rats.
abstract: Dietary fat content (low versus high fat) may modulate the serum lipid-lowering effect of high-performance (HP)-inulin. This study investigated the effect of dietary HP-inulin on metabolism in rats fed a low- or high-fat diet.
  
  
  
  Rats were fed a diet of 5% fat with 5% cellulose or 5% HP-inulin (average degree of polymerization = 24) (low-fat diet) or of 20% fat with 5% cellulose or 5% HP-inulin (high-fat diet) for 28 days. Total, HDL, and non-HDL cholesterols, and triglyceride concentrations in the serum were measured along with total lipid content of liver and feces. Hepatic triglyceride and cholesterol, and fecal neutral and acidic sterol concentrations in total lipid were assessed. In addition, cecum SCFA levels and bacterial profiles were determined. The hypolipidemic effect of HP-inulin differed depending on dietary fat content (5% versus 20%). Specifically, 5% inulin instead of cellulose in a semi-purified diet significantly reduced serum lipid levels in rats fed a high-fat diet, which was strongly associated with increased total lipid and neutral sterol excretion.
  
  
  
  Dietary fat content modulates the hypolipidemic effect of dietary inulin.
authors.affiliation: Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
authors.forename: Kyu-Ho
authors.initials: KH
authors.lastname: Han
authors.affiliation: Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
authors.forename: Aiko
authors.initials: A
authors.lastname: Yamamoto
authors.affiliation: Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
authors.forename: Ken-Ichiro
authors.initials: KI
authors.lastname: Shimada
authors.affiliation: Research Center, Nippon Beet Sugar MFG Co., Obihiro, Hokkaido, Japan.
authors.forename: Hiroto
authors.initials: H
authors.lastname: Kikuchi
authors.affiliation: Department of Food Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
authors.forename: Michihiro
authors.initials: M
authors.lastname: Fukushima
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002432:Cecum / Q000382:microbiology; D002784:Cholesterol / Q000378:metabolism; D059305:Diet, High-Fat / Q000009:adverse effects; D004041:Dietary Fats / Q000009:adverse effects / Q000494:pharmacology*; D005232:Fatty Acids, Volatile / Q000378:metabolism; D000069196:Gastrointestinal Microbiome / Q000187:drug effects; D000960:Hypolipidemic Agents / Q000494:pharmacology*; D007444:Inulin / Q000494:pharmacology*; D008055:Lipids / Q000097:blood*; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D011916:Rats, Inbred F344; D014280:Triglycerides / Q000378:metabolism
chemical_list: D004041:Dietary Fats; D005232:Fatty Acids, Volatile; D000960:Hypolipidemic Agents; D008055:Lipids; D014280:Triglycerides; D007444:Inulin; D002784:Cholesterol
keywords: Dietary fat; Fecal lipid excretion; Fermentation; Inulin