Erythropoietin administration is associated with short-term improvement in glomerular filtration rate after ischemia-reperfusion injury.

Abstract:

BACKGROUND:Erythropoietin (EPO) is a cytokine with organ-protective properties. We hypothesized that EPO could attenuate acute renal dysfunction and inflammation in a porcine model of ischemia-reperfusion (IR). Furthermore, we aimed to characterize the impact of EPO on systemic and renal hemodynamics, and renal oxygen consumption. METHODS:Twenty-four pigs were randomly assigned to three groups: (1) EPO (5000 IU/kg) administered intravenously before IR (n=9), (2) placebo administered before IR (n=9), or (3) sham group, anesthetized and operated on only (n=6). IR was induced by clamping the left renal artery for 45 min. Hemodynamics and renal blood flow (RBF) were analyzed continuously. Glomerular filtration rate (GFR), renal oxygen consumption, and plasma cytokines (IL-1β, IL-6, IL-8, IL-10, and TNF-α) were analyzed hourly. Renal biopsies were analyzed for cytokine content and apoptosis. RESULTS:GFR was higher during reperfusion in the EPO group than in the placebo group (P<0.01). No differences between the IR groups were found in hemodynamics, RBF, oxygen consumption, or renal apoptosis. The levels of TNF-α in the plasma (P=0.036) and the levels of TNF-α and IL-10 in the renal cortex (P=0.04 and P=0.01, respectively) were lower in the EPO group compared with the sham group. CONCLUSION:EPO attenuated the renal dysfunction as estimated as GFR. This effect was not related to changes in the hemodynamics. The immunomodulatory effects of EPO were manifested as decreased levels of TNF-α and IL-10 in renal biopsies and TNF-α levels in plasma.

authors

Sølling C,Christensen AT,Krag S,Frøkiaer J,Wogensen L,Krog J,Tønnesen EK

doi

10.1111/j.1399-6576.2010.02369.x

subject

Has Abstract

pub_date

2011-02-01 00:00:00

pages

185-95

issue

2

eissn

0001-5172

issn

1399-6576

journal_volume

55

pub_type

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