Conclusion: Endogenous catecholamine mediates the arrhythmogenic, positively chronotropic and inotropic effects of IL-2.IL-2 at 200 U/ ml inhibits the cardiac function in the isolated rat heart. 结论:内源性儿茶酚胺介导了IL2的致离体心脏心律失常、正性变时和变力作用,较高浓度的IL2抑制离体心脏的功能。