Protective role of interleukin-12 in viral myocarditis

被引:42
作者
Shioi, T [1 ]
Matsumori, A [1 ]
Nishio, R [1 ]
Ono, K [1 ]
Kakio, T [1 ]
Sasayama, S [1 ]
机构
[1] KYOTO UNIV, DEPT CARDIOVASC MED, SAKYO KU, KYOTO 606, JAPAN
关键词
myocarditis; interleukin-12; cytokine; heart failure; virus;
D O I
10.1006/jmcc.1997.0445
中图分类号
R5 [内科学];
学科分类号
1002 [临床医学]; 100201 [内科学];
摘要
The co-ordinate action of several cytokines determines the nature, severity and duration of myocarditis. Interkeukin (IL)-12 mediates a broad range of effects on both innate and acquired immunity, However, the in vivo role of IL-12 in viral myocarditis remains to be elucidated. To clarify the role of IL-12 in viral myocarditis, we treated mice inoculated with the encephalomyocarditis virus (EMCV), with recombinant IL-12 and neutralizing anti-IL-12 antibody, The successive administration of 10 ng of IL-12 from the day of virus inoculation to 5 days thereafter, reduced mortality, myocardial damage and viral replication in the heart tissue. The gene expression of IL-12p35 and IL-12p40 was enhanced in the hearts of EMCV inoculated mice. Treatment with neutralizing anti-IL-12 resulted in increased mortality of mice inoculated with EMCV. In conclusion, endogenous and exogenous IL-12 play protective roles in murine viral myocarditis. (C) 1997 Academic Press Limited.
引用
收藏
页码:2327 / 2334
页数:8
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