Inhibitory effects of Dai-saiko-to (Da-Chai-Hu-Tang) on the progression of atherosclerotic lesions in Kurosawa and Kusanagi-hypercholesterolemic rabbits.
The inhibitory effects of the traditional herbal medicine Dai-saiko-to (Da-Chai-Hu-Tang) on the progression of the atherosclerotic lesions were studied using the spontaneous familial hypercholesterolemia (FH) model, Kurosawa and Kusanagi-hypercholesterolemic (KHC) rabbits. Changes in blood chemistry, pathology and low-density lipoprotein (LDL) oxidation were measured in a control group and a Dai-saiko-to-treated group. In the control group, the area of atheromatous plaques of the aorta progressed between week 12 (29.1%) and 26 (51.5%). This progression of atherosclerotic lesions did not happen in the Dai-saiko-to-treated group between week 12 (26%) and 26 (27.4%). Antioxidative effects on LDL were seen in the Dai-saiko-to-treated group in weeks 16 and 18. Dai-saiko-to did not improve the hypercholesterolemia in the KHC rabbits. These results suggest that Dai-saiko-to has inhibitory effects on the development of atheromatous plaque formation in spontaneous FH model rabbits. It is possible that the antioxidative effects of Dai-saiko-to on LDL led to the beneficial effects observed in this study.
Kampo and Pharmacognosy Laboratory, Central Research Laboratories, Tsumura and Co., Ibaraki, Japan. iidukavakira@mail.tsumura.co.jp
A
A
Iizuka
O T
OT
Iijima
F
F
Yoshie
B
B
Makino
S
S
Amagaya
Y
Y
Komatsu
K
K
Kondo
A
A
Matsumoto
H
H
Itakura
D000818:Animals; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology*; D001013:Aorta, Thoracic / Q000187:drug effects / Q000473:pathology; D001161:Arteriosclerosis / Q000097:blood / Q000209:etiology / Q000473:pathology / Q000517:prevention & control*; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D006938:Hyperlipoproteinemia Type II / Q000097:blood / Q000150:complications / Q000473:pathology*; D015227:Lipid Peroxidation / Q000187:drug effects; D008055:Lipids / Q000097:blood; D008077:Lipoproteins, LDL / Q000378:metabolism; D008297:Male; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use; D011817:Rabbits; D013997:Time Factors
D000975:Antioxidants; D004365:Drugs, Chinese Herbal; D008055:Lipids; D008077:Lipoproteins, LDL; D010936:Plant Extracts; C051121:daisaikoto