Nutrition Research and Practice

The Korean Nutrition Society (한국영양학회)
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Hog millet (Panicum miliaceum L.)-supplemented diet ameliorates hyperlipidemia and hepatic lipid accumulation in C57BL/6J-ob/ob mice

  • Park, Mi-Young (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Jang, Hwan-Hee (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Kim, Jung-Bong (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Yoon, Hyun-Nye (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Lee, Jin-Young (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Lee, Young-Min (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Kim, Jae-Hyun (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration) ;
  • Park, Dong-Sik (Functional Food & Nutrition Division, National Academy of Agricultural Science, Rural Develpoment Administration)
  • Received : 2011.07.20
  • Accepted : 2011.12.01
  • Published : 2011.12.31
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Abstract

Dietary intake of whole grains reduces the incidence of chronic diseases such as obesity, diabetes, cardiovascular disease, and cancer. In an earlier study, we showed that Panicum miliaceum L. extract (PME) exhibited the highest anti-lipogenic activity in 3T3-L1 cells among extracts of nine different cereal grains tested. In this study, we hypothesized that PME in the diet would lead to weight loss and augmentation of hyperlipidemia by regulating fatty acid metabolism. PME was fed to ob/ob mice at 0%, 0.5%, or 1% (w/w) for 4 weeks. After the experimental period, body weight changes, blood serum and lipid profiles, hepatic fatty acid metabolism-related gene expression, and white adipose tissue (WAT) fatty acid composition were determined. We found that the 1% PME diet, but not the 0.5%, effectively decreased body weight, liver weight, and blood triglyceride and total cholesterol levels (P < 0.05) compared to obese ob/ob mice on a normal diet. Hepatic lipogenic-related gene ($PPAR{\alpha}$, L-FABP, FAS, and SCD1) expression decreased, whereas lipolysis-related gene (CPT1) expression increased in animals fed the 1% PME diet (P < 0.05). Long chain fatty acid content and the ratio of C18:1/C18:0 fatty acids decreased significantly in adipose tissue of animals fed the 1% PME diet (P < 0.05). Serum inflammatory mediators also decreased significantly in animals fed the 1% PME diet compared to those of the ob/ob control group (P < 0.05). These results suggest that PME is useful in the chemoprevention or treatment of obesity and obesity-related disorders.

Keywords

References

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