Negative inotropic effects of recombinant interleukin 2 in patients without left ventricular dysfunction.

Abstract:

UNLABELLED:Experimental data have shown that rIL2 has negative inotropic properties. This has not been investigated in humans with normal left ventricular function. Seventeen consecutive renal cell carcinoma patients who received rIL2 therapy because of dissemination were analyzed before and after treatment with a low dose of rIL2 subcutaneously. Left ventricular ejection fraction (echocardiography), heart rate variability parameters (24 h electrocardiography), and TNF alpha, IL1 beta and nitric oxide metabolites (NO(x)) were measured. LVEF decreased from 54+/-7 to 50+/-6% (mean+/-S.D.; P=0.012), with a concomitant increase in heart rate from 87+/-13 to 94+/-13 beats/min (P=0.031). All frequency domain HRV parameters decreased: the total power from 18.0+/-7.9 to 14.0+/-5.0 ms (P=0.001), the low frequency from 10.3+/-5.4 to 8. 3+/-3.4 ms (P=0.001), and the high frequency from 6.3+/-2.6 to 4. 5+/-1.1 ms (P=0.001). There was no measurable effect on TNF alpha, IL1 beta concentrations. Plasma levels of nitrate (NO(x)) increased from 22.8+/-14.4 to 41.8+/-26.6 micromol/l (P=0.007). CONCLUSIONS:A low dose of rIL2 has a negative inotropic effect that may be mediated by increased NO concentrations. It also reduces sympathetic activity as reflected in HRV parameters.

journal_name

Eur J Heart Fail

authors

Tio RA,Nieken J,de Vries EG,Pfeiffer C,de Jongste MJ,Pieper E,Moshage H,Limburg PC,Mulder NH

doi

10.1016/s1388-9842(00)00073-8

keywords:

subject

Has Abstract

pub_date

2000-06-01 00:00:00

pages

167-73

issue

2

eissn

1388-9842

issn

1879-0844

pii

S1388-9842(00)00073-8

journal_volume

2

pub_type

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