Peucedanum japonicum Thunb Inhibits High-fat Diet Induced Obesity in Mice
2011
Okabe, Takafumi | Toda, Takayoshi | Nukitrangsan, Natthanan | Inafuku, Masashi | Iwasaki, Hironori | Oku, Hirosuke
This study examined the antiobese activity of Peucedanum japonicum Thunb (PJT) in mice. In the first experiment, 4-week-old C57BL/6 mice were fed seven different diets containing 15% corn oil and 0-20% PJT powder for 4 weeks. Feeding the 10% and 20% PJT diet suppressed the body weight gain and the accumulation of abdominal and subcutaneous fats. PJT reduced serum and liver levels of triglyceride and serum levels of leptin in a dose-dependent manner. PJT intake decreased the proportion of saturated fatty acids and increased polyunsaturated and n-3 fatty acids in the liver. To obtain more insight into the antiobese activity of PJT, its effect on lipid absorption and enzyme activities related to lipid metabolism was studied in the second experiment. There was an increased faecal excretion of triglyceride in mice fed 5% and 10% PJT diets. Fatty acid synthase activity was decreased while carnitine palmitoyltransferase activity was increased by 10% PJT intake. These findings pointed to the usefulness of PJT for the development of a safe natural agent to reduce obesity or body weight for the first time. The rationale for the lipid lowering mechanism of PJT and the candidate compound responsible for the observations have also been discussed.
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