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Vol. 52, No. 3, 2008
Issue release date: July 2008
Section title: Original Paper
Ann Nutr Metab 2008;52:241–249
(DOI:10.1159/000140516)

Effects of Simultaneous Intakes of Fish Oil and Green Tea Extracts on Plasma, Glucose, Insulin, C-Peptide, and Adiponectin and on Liver Lipid Concentrations in Mice Fed Low- and High-Fat Diets

Shirai N. · Suzuki H.
aNational Food Research Institute, Kannondai, Tsukuba, and bKagawa Nutrition University, Chiyoda, Sakado, Japan

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 6/25/2007
Accepted: 3/10/2008
Published online: 6/19/2008

Number of Print Pages: 9
Number of Figures: 4
Number of Tables: 2

ISSN: 0250-6807 (Print)
eISSN: 1421-9697 (Online)

For additional information: http://www.karger.com/ANM

Abstract

Aims: The purpose of this study was to clarify the effects of a simultaneous intake of fish oil and green tea extracts (GTE) on plasma lipids, glucose (Glu), insulin, C-peptide, and adiponectin concentrations and on liver lipids in mice fed low- and high-fat diets. Methods: Male mice (5 months old) were fed low-fat (5%) or high-fat (20%) diets containing 0% (5 or 20% lard), 1% (4 or 19% lard) or 5% (0 or 15% lard) fish oil with or without 1% GTE for 3 months. Results: Single or combined intakes of fish oil and GTE intakes significantly lowered plasma and liver total cholesterol (T-chol) and triacylglycerol (TG) concentrations in mice on high-fat diets. However, a positive effect of GTE alone was not observed in the plasma T-chol and TG concentrations of mice on low-fat diets. Plasma Glu concentrations were significantly lowered by dietary fish oil in mice on the low- and high-fat diets. A tendency of GTE intake to decrease plasma Glu in mice on both the low- and high-fat diets was not significant. An intake of GTE only minimally influenced plasma insulin, C-peptide, and adiponectin concentrations, but fish oil supplementation increased the adiponectin concentration in mice on the low- and high-fat diets. GTE addition to the diets had no adverse effects on reductions by fish oil. Conclusion: These results suggest that a simultaneous intake of fish oil and GTE can improve plasma and liver lipid and plasma Glu profiles in mice fed a high-fat diet without any negative interactions of fish oil and GTE.


  

Author Contacts

Nobuya Shirai
National Food Research Institute
2-1-12, Kannondai, Tsukuba, Ibaraki 305-8642 (Japan)
Tel. +81 29 838 8089, Fax +81 29 838 7996
E-Mail nshinya@affrc.go.jp

  

Article Information

Received: June 25, 2007
Accepted: March 10, 2008
Published online: June 19, 2008
Number of Print Pages : 9
Number of Figures : 4, Number of Tables : 2, Number of References : 49

  

Publication Details

Annals of Nutrition and Metabolism (Journal of Nutrition, Metabolic Diseases and Dietetics)

Vol. 52, No. 3, Year 2008 (Cover Date: July 2008)

Journal Editor: Elmadfa I. (Vienna)
ISSN: 0250–6807 (Print), eISSN: 1421–9697 (Online)

For additional information: http://www.karger.com/ANM


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 6/25/2007
Accepted: 3/10/2008
Published online: 6/19/2008

Number of Print Pages: 9
Number of Figures: 4
Number of Tables: 2

ISSN: 0250-6807 (Print)
eISSN: 1421-9697 (Online)

For additional information: http://www.karger.com/ANM


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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