A nitric oxide-donor furoxan moiety improves the efficacy of edaravone against early renal dysfunction and injury evoked by ischemia/reperfusion

Oxid Med Cell Longev. 2015:2015:804659. doi: 10.1155/2015/804659. Epub 2015 Mar 5.

Abstract

Edaravone (5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, EDV) is a free-radical scavenger reduces organ ischemic injury. Here we investigated whether the protective effects of EDV in renal ischemia/reperfusion (I/R) injury may be enhanced by an EDV derivative bearing a nitric oxide- (NO-) donor furoxan moiety (NO-EDV). Male Wistar rats were subjected to renal ischemia (45 minutes), followed by reperfusion (6 hours). Administration of either EDV (1.2-6-30 µmol/kg, i.v.) or NO-EDV (0.3-1.2-6 µmol/kg, i.v.) dose-dependently attenuated markers of renal dysfunction (serum urea and creatinine, creatinine clearance, urine flow, urinary N-acetyl-β-D-glucosaminidase, and neutrophil gelatinase-associated lipocalin/lipocalin-2). NO-EDV exerted protective effects in the dose-range 1.2-6 µmol/kg, while a higher dose (30 µmol/kg) was needed to obtain protection by EDV. Both EDV and NO-EDV modulated tissue markers of oxidative stress and lipid peroxidation. NO-EDV, but not EDV, activated endothelial NO synthase (NOS) and blunted I/R-induced upregulation of inducible NOS, secondary to modulation of Akt and NF-κB activation, respectively. Besides NO-EDV administration inhibited I/R-induced IL-1β, IL-18, IL-6, and TNF-α overproduction. Overall, these findings demonstrate that the NO-donor moiety contributes to the protection against early renal I/R injury and suggest that NO-donor EDV codrugs are worthy of additional study as innovative pharmacological tools.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetylglucosamine / urine
  • Acute-Phase Proteins / urine
  • Animals
  • Antipyrine / analogs & derivatives*
  • Antipyrine / chemistry
  • Antipyrine / pharmacology
  • Creatinine / blood
  • Disease Models, Animal
  • Edaravone
  • Free Radical Scavengers / pharmacology*
  • Ischemia / metabolism
  • Ischemia / pathology
  • Kidney / drug effects
  • Kidney / metabolism
  • Kidney / pathology*
  • Lipid Peroxidation / drug effects
  • Lipocalin-2
  • Lipocalins / urine
  • Male
  • Malondialdehyde / analysis
  • Nitric Oxide Donors / chemistry
  • Nitric Oxide Donors / pharmacology*
  • Oxadiazoles / chemistry
  • Oxadiazoles / pharmacology*
  • Oxidative Stress / drug effects*
  • Proto-Oncogene Proteins / urine
  • Proto-Oncogene Proteins c-akt / metabolism
  • Rats
  • Rats, Wistar
  • Reperfusion Injury / metabolism
  • Reperfusion Injury / pathology
  • Urea / blood

Substances

  • Acute-Phase Proteins
  • Free Radical Scavengers
  • Lcn2 protein, rat
  • Lipocalin-2
  • Lipocalins
  • Nitric Oxide Donors
  • Oxadiazoles
  • Proto-Oncogene Proteins
  • furoxans
  • Malondialdehyde
  • Urea
  • Creatinine
  • Proto-Oncogene Proteins c-akt
  • Edaravone
  • Antipyrine
  • Acetylglucosamine