期刊
ARCHIVES OF PHARMACAL RESEARCH
卷 34, 期 2, 页码 223-228出版社
PHARMACEUTICAL SOC KOREA
DOI: 10.1007/s12272-011-0207-z
关键词
Cyperus rotundus; Valencene; 5-Lipoxygenase; beta-Hexosaminidase; Anti-allergy
资金
- Korean Food and Drug Administration
- Ministry of Education, Science and Technology, Korea
- Food & Drug Administration (KFDA), Republic of Korea [09112한약재807] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06B3405] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
From the 70% ethanol extract of the rhizomes of Cyperus rotundus (CRE), several major constituents including the sesquiterpene derivatives (valencene, nootkatone, and caryophyllene alpha-oxide), monoterpenes (beta-pinene, 1,8-cineole, and limonene) and 4-cymene were isolated and examined for their anti-allergic activity in vitro and in vivo. In rat basophilic leukemia (RBL)-1 cells, the sesquiterpenes strongly inhibited 5-lipoxygenase-catalyzed leukotrienes production. In addition, they inhibited beta-hexosaminidase release by antigen-stimulated RBL-2H3 cells, with valencene having the highest inhibitory effect. CRE inhibited leukotrienes production and beta-hexosaminidase release at 300 mu g/mL. It was also found that the most active sesquiterpene (valencene) and CRE inhibited beta-hexosaminidase degranulation by inhibiting the initial activation reaction, Lyn phosphorylation, in IgE-stimulated RBL-2H3 cells. Moreover, CRE, valencene and nootkatone significantly inhibited the delayed-type hypersensitivity reaction in mice when administered orally at 50 - 300 mg/kg. In conclusion, C. rotundus and its constituents, valencene, nootkatone, and caryophyllene alpha-oxide, exert anti-allergic activity in vitro and in vivo. These sesquiterpenes, but not monoterpenes, certainly contribute to the anti-allergic activity of the rhizomes of C. rotundus.
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