MnTMPyP, a superoxide dismutase/catalase mimetic, decreases inflammatory indices in ischemic acute kidney injury.
Inflamm Res
; 60(3): 299-307, 2011 Mar.
Article
em En
| MEDLINE
| ID: mdl-21153678
ABSTRACT
OBJECTIVE:
This study investigates the effect of a superoxide dismutase mimetic, MnTMPyP, on pro- and anti-inflammatory cytokines in acute renal ischemia-reperfusion (IR). MATERIALS AND TREATMENT Male Sprague-Dawley rats underwent bilateral clamping of the renal arteries for 45 min followed by 1, 4, or 24 h of reperfusion. A subset of animals was treated with MnTMPyP (5 mg/kg, i.p.) or saline. Porcine proximal tubular epithelial cells were ATP-depleted for 4 h followed by recovery for 2 h.METHODS:
Cytokines were analyzed by ELISA, and ED1(+) macrophages and CD8(+) T lymphocytes by immunohistochemistry. Statistical analysis was performed using ANOVA.RESULTS:
MnTMPyP attenuated the IR-mediated increase in serum creatinine and circulating levels of interleukin (IL)-2 following 24 h of reperfusion. Furthermore, treatment attenuated increases in tissue levels of tumor necrosis factor (TNF)-α, IL-2, IL-4, and IL-13. MnTMPyP partially prevented the IR-induced infiltration of ED1(+) macrophages and CD8(+) T lymphocytes in the kidney. ATP depletion-recovery of porcine proximal tubular epithelial cells resulted in decreased IL-6 and IL-10 levels, and MnTMPyP partially restored these cytokines.CONCLUSIONS:
These results show that MnTMPyP is partially effective in reducing inflammation associated with renal IR and that reactive oxygen species play a role in modulating both pro- and anti-inflammatory pathways in acute kidney injury.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Superóxido Dismutase
/
Traumatismo por Reperfusão
/
Catalase
/
Injúria Renal Aguda
/
Rim
/
Metaloporfirinas
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Inflamm Res
Assunto da revista:
ALERGIA E IMUNOLOGIA
/
PATOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos