Strain-related differences in Sephadex bead-induced airway hyperresponsiveness and inflammation in rats

被引：12

作者：

Matsubara, S ^{[1
]}

Nakata, A ^{[1
]}

Kikuchi, M ^{[1
]}

Kikkawa, H ^{[1
]}

Ikezawa, K ^{[1
]}

Naito, K ^{[1
]}

机构：

[1] TANABE SEIYAKU CO LTD,PHARMACEUT DEV RES LAB,TODA,SAITAMA 335,JAPAN

来源：

INFLAMMATION RESEARCH | 1997年 / 46卷 / 08期

关键词：

Sephadex beads; rat; strain; airway hyperresponsiveness; airway inflammation;

D O I：

10.1007/s000110050191

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Objective: The aim of this study was to compare Sephadex G-200 (Sephadex)-induced airway hyperresponsiveness (AHR) and pulmonary eosinophilia among some rat strains. Materials: Sprague-Dawley (SD), Brown-Norway (BN), Fischer 344 (Fischer), Lewis and Wistar-Kyoto (WKY) rats were used. Methods: Sephadex (0.5 mg/animal) was intravenously administered on days 0, 2 and 5. Measurement of AHR using serotonin and bronchoalveolar lavage (BAL) was performed on day 7. Results: The Lewis strain exhibited significant AHR to Sephadex but the BN, Fischer and WKY strains did not. Additionally, the degree of AHR in Lewis rats was smaller than in SD rats throughout the study. Eosinophils in BAL fluid, however, increased in each strain, and the magnitude of the response was BN > Lewis > WKY > Fischer. Both the AHR and pulmonary eosinophilia in Lewis rats were inhibited by dexamethasone (0.1 mg/kg, p.o. x3). Conclusion: These results indicate that the Lewis rat is a useful strain for analysis of the mechanism of Sephadex-induced AKR and airway inflammation.

引用

页码：299 / 305

页数：7

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