Junji Akaki1, Shiori Tachi2, Naoki Nakamura3, Tetsuya Arai4, Hiroo Yamasaki5, Makoto Inoue6, Toshiaki Makino7. 1. R&D Center, Kobayashi Pharmaceutical Co., Ltd., 4-10 Doshomachi 4-chome, Chuo-ku, Osaka, Japan. Electronic address: j.akaki@kobayashi.co.jp. 2. Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, Japan. Electronic address: shioreeeeen807@gmail.com. 3. R&D Center, Kobayashi Pharmaceutical Co., Ltd., 4-10 Doshomachi 4-chome, Chuo-ku, Osaka, Japan. Electronic address: nao.nakamura@kobayashi.co.jp. 4. R&D Center, Kobayashi Pharmaceutical Co., Ltd., 4-10 Doshomachi 4-chome, Chuo-ku, Osaka, Japan. Electronic address: t.arai@kobayashi.co.jp. 5. R&D Center, Kobayashi Pharmaceutical Co., Ltd., 4-10 Doshomachi 4-chome, Chuo-ku, Osaka, Japan. Electronic address: h.yamasaki@kobatashi.co.jp. 6. Laboratory of Medicinal Resources, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Japan. Electronic address: minoue@dpc.aichi-gakuin.ac.jp. 7. Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya, Japan. Electronic address: makino@phar.nagoya-cu.ac.jp.
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE: Bofutsushosan (fangfengtongshengsan in Chinese, BTS) is a formula in traditional Japanese Kampo medicine and Chinese medicine comprising 18 crude drugs that is used for treating obesity and metabolic syndrome. AIM OF THE STUDY: We evaluated the promotive effects of BTS on lipid and cholesterol elimination in mice. MATERIALS AND METHODS: Mice were reared with a high-fat diet containing boiled water extract of BTS for 30 days, and their biochemical parameters as well as the weight and lipid content of feces were measured. We also measured cholesterol uptake into Caco-2 cells cultured with or without BTS extract. RESULTS: The body weight and amounts of visceral fat and subcutaneous fat on day 28; the weights of epididymal, perirenal, and mesenteric fat; and the serum concentrations of triglyceride, glucose, and hemoglobin A1c on day 30 were significantly lower in the BTS extract-treated groups than in the control in a dose-dependent manner. The amounts of lipid and cholesterol in the feces collected from day 6-23 were significantly greater than in the control. When Caco-2 cells were incubated with BTS extract, the uptake of cholesterol into cells was significantly reduced in a concentration-dependent manner. Among the components of BTS, the methanol extracts of Platycodi Radix and Zingiberis Rhizoma contribute but the extracts of Ephedrae Herba and Rhei Rhizoma counteract the suppressive effect of BTS on cholesterol uptake into Caco-2 cells. CONCLUSIONS: BTS has beneficial effects on obesity and metabolic syndrome, and its mechanisms of action include the promotion of lipid elimination and the inhibition of cholesterol absorption in the intestine.
ETHNOPHARMACOLOGICAL RELEVANCE: Bofutsushosan (fangfengtongshengsan in Chinese, BTS) is a formula in traditional Japanese Kampo medicine and Chinese medicine comprising 18 crude drugs that is used for treating obesity and metabolic syndrome. AIM OF THE STUDY: We evaluated the promotive effects of BTS on lipid and cholesterol elimination in mice. MATERIALS AND METHODS:Mice were reared with a high-fat diet containing boiled water extract of BTS for 30 days, and their biochemical parameters as well as the weight and lipid content of feces were measured. We also measured cholesterol uptake into Caco-2 cells cultured with or without BTS extract. RESULTS: The body weight and amounts of visceral fat and subcutaneous fat on day 28; the weights of epididymal, perirenal, and mesenteric fat; and the serum concentrations of triglyceride, glucose, and hemoglobin A1c on day 30 were significantly lower in the BTS extract-treated groups than in the control in a dose-dependent manner. The amounts of lipid and cholesterol in the feces collected from day 6-23 were significantly greater than in the control. When Caco-2 cells were incubated with BTS extract, the uptake of cholesterol into cells was significantly reduced in a concentration-dependent manner. Among the components of BTS, the methanol extracts of Platycodi Radix and Zingiberis Rhizoma contribute but the extracts of Ephedrae Herba and Rhei Rhizoma counteract the suppressive effect of BTS on cholesterol uptake into Caco-2 cells. CONCLUSIONS:BTS has beneficial effects on obesity and metabolic syndrome, and its mechanisms of action include the promotion of lipid elimination and the inhibition of cholesterol absorption in the intestine.