Open AccessHepatic fatty acid biosynthesis in KK ‐A y mice is modulated by administration of persimmon peel extract: A DNA microarray study
Author(s) -
Izuchi Ryoichi,
Ishijima Tomoko,
Okada Shinji,
Abe Keiko,
Nakai Yuji
Publication year - 2018
Publication title -
food science and nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 27
ISSN - 2048-7177
DOI - 10.1002/fsn3.728
Subject(s) - downregulation and upregulation , medicine , endocrinology , palmitic acid , peroxisome proliferator activated receptor , insulin resistance , chemistry , fatty acid synthesis , inflammation , insulin , fatty acid , ketone bodies , receptor , biology , biochemistry , metabolism , gene
Scope Previously, we showed that the intake of a persimmon peel ( PP ) extract altered hepatic gene expression associated with the insulin signaling pathway and enhanced tyrosine phosphorylation of insulin receptors in nonobese type 2 diabetic Goto‐Kakizaki rats. Our objective was to evaluate the effect of fat‐soluble PP extract on obese type 2 diabetic KK ‐A y mice with insulin resistance. Methods and results KK ‐A y mice were fed a diet mixed with 0.1% of the extract for 8 weeks. The total ketone body levels in the plasma of PP extract‐fed mice were significantly lower than those in the normal diet‐fed mice. Hepatic nonesterified palmitic acid content was higher in the PP extract‐fed mice than in normal diet‐fed mice. The hepatic gene expression profiles of the treated mice indicated upregulation of fatty acid synthesis and downregulation of inflammation‐associated genes, predicting SREBP ‐1c and PPAR γ activation. Conclusion These results suggest that the PP extract enhances hepatic fatty acid synthesis via SREBP ‐1c and PPAR γ, as well as anti‐inflammatory activity in KK ‐A y mice.