Effect of a recombinant manganese superoxide dismutase on prevention of contrast-induced acute kidney injury.

Abstract:

BACKGROUND:Contrast media (CM)-induced nephropathy (CIN) is an acute deterioration of renal function following administration of CM mediated to a large extent by the increased production of ROS within the kidney. Aim of this study was to evaluate whether a novel isoform of a recombinant Manganese SOD (rMnSOD) could provide an effective protection against CIN; this molecule shares the same ability of physiological SODs in scavenging reactive oxygen species (ROS) but, due to its peculiar properties, enters inside the cells after its administration. METHODS:We studied the effects rMnSOD on oxidative damage in a rat model of CIN in uninephrectomized rats, that were randomly assigned to 3 experimental Groups: Group CON, control rats treated with the vehicle of CM, Group HCM, rats treated with CM and Group SOD, rats treated with CM and rMnSOD. RESULTS:In normal rats, pretreatment with rMnSOD, reduced renal superoxide anion production, induced by the activation of NAPDH oxidase, by 84 % (p < 0.001). In rats of Group HCM, ROS production was almost doubled compared to rat of Group CON (p < 0.01) but returned to normal values in rats of Group SOD, where a significant increase of SOD activity was detected (+16 % vs HCM, p < 0.05). Administration of CM determined a striking fall of GFR in rats of Group HCM (-70 %, p < 0.001 vs CON), greatly blunted in Group SOD (-28 % vs CON, p < 0.01); this was associated with a lower presence of both tubular necrosis and intratubular casts in SOD-treated rats (both p < 0.01 vs Group HCM). CONCLUSIONS:Our data indicate that rMnSOD is able to reduce renal oxidative stress, thus preventing the reduction of GFR and the renal histologic damage that follows CM administration.

journal_name

Clin Exp Nephrol

authors

Pisani A,Sabbatini M,Riccio E,Rossano R,Andreucci M,Capasso C,De Luca V,Carginale V,Bizzarri M,Borrelli A,Schiattarella A,Santangelo M,Mancini A

doi

10.1007/s10157-013-0828-2

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

424-31

issue

3

eissn

1342-1751

issn

1437-7799

journal_volume

18

pub_type

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