Ethanol extracts of Saururus chinensis suppress ovalbumin-sensitization airway inflammation

Title
Ethanol extracts of Saururus chinensis suppress ovalbumin-sensitization airway inflammation
Author(s)
장현욱Zhejin Quan[Zhejin Quan]이윤주[이윤주]양주혜[양주혜]유예[유예]이응[이응]이연경김미화김종연최준혁손종근
Keywords
NF-KAPPA-B; MANASSANTIN-A; BRONCHIAL HYPERREACTIVITY; 5-LIPOXYGENASE INHIBITOR; TRANSACTIVATION ACTIVITY; PROSTAGLANDIN E-2; METHANOL EXTRACT; INOS EXPRESSION; MAST-CELLS; ASTHMA
Issue Date
201010
Publisher
ELSEVIER IRELAND LTD
Citation
JOURNAL OF ETHNOPHARMACOLOGY, v.132, no.1, pp.143 - 149
Abstract
Aim of the study: The aerial part of Saururus chinensis has been used in folk medicine to treat several inflammatory diseases in China and Korea. Previously, our group reported that anti-asthmatic activity of an ethanol extract of Saururus chinensis (ESC) might occur, in part, via the inhibition of prostaglandin D(2) (PGD(2)) and leukotriene C(4) (LTC(4)) production, and degranulation reaction in vitro, as well as through the down-regulation of interleukin (IL)-4 and eotaxin mRNA expression in an in vivo ovalbumin-sensitization animal model. However, the effects of Saururus chinensis on eicosanoid generation, as well as Th2 cytokines and eotaxin production in an in vivo asthma model, have not been fully investigated. Moreover, it has not been determined whether ESC can ameliorate airway inflammation in vivo. In the present study, we investigated the therapeutic activity of Saururus chinensis on ovalbumin (OVA)-sensitized airway inflammation and its major phytochemical compositions. Materials and methods: Asthma was induced in BALB/c mice by ovalbumin-sensitization and inhalation. ESC (10-100 mg/kg) or dexamethasone (5 mg/kg), a positive control, was administered 7 times orally every 12 h from one day before the first challenge to 1 h before the second challenge. The recruitment of inflammatory cells and hyperplasia of goblet cells were evaluated by H&E and PAS staining. Levels of Th2 cytokines, eotaxin, PGD(2) and LTC(4) were measured to evaluate the anti-inflammatory activity of ESC in OVA-sensitized mice. Contents of major components were analyzed by HPLC using a reversed-phase C18 column. Results: ESC (10 mg/kg) suppressed allergic airway inflammation by inhibition of the production of IL-4 (P < 0.001), IL-5 (P < 0.05), IL-13 (P < 0.001), eotaxin (P < 0.001), PGE(2) (P < 0.001), LTC(4) (P < 0.001) in lung extract and IgE level (P < 0.001) in the serum. In addition, ESC (50 mg/kg) reduced the infiltration of inflammatory cells and hyperplasia of goblet cells in the lung tissues. The anti-inflammatory effect of ESC was comparable to that of the positive control drug, dexamethasone. Its major phytochemical composition includes manassantin A, B and sauchinone. Conclusions: These results suggest that ESC decreased inflammation and mucus secretion in the OVA-induced bronchial asthma model, and its anti-asthmatic activity may occur in part via the inhibition of Th2 cytokines and eotaxin protein expression, as well as through prostaglandin E(2) (PGE(2)) and leukotriene C(4) (LTC(4)) generation. This effects may be attributed particularly to the presence of manassantin A, B and sauchinone major component evidenced by a HPLC analysis. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/23508http://dx.doi.org/10.1016/j.jep.2010.08.002
ISSN
0378-8741
Appears in Collections:
약학대학 > 약학부 > Articles
의과대학 > 생리학교실 > Articles
의과대학 > 병리학교실 > Articles
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