Aminoguanidine Prevents the Oxidative Stress, Inhibiting Elements of Inflammation, Endothelial Activation, Mesenchymal Markers, and Confers a Renoprotective Effect in Renal Ischemia and Reperfusion Injury.
Consuelo PastenMauricio LozanoJocelyn RoccoFlavio CarriónCristobal AlvaradoJéssica LiberonaLuis MicheaCarlos E IrarrazabalPublished in: Antioxidants (Basel, Switzerland) (2021)
Oxidative stress produces macromolecules dysfunction and cellular damage. Renal ischemia-reperfusion injury (IRI) induces oxidative stress, inflammation, epithelium and endothelium damage, and cessation of renal function. The IRI is an inevitable process during kidney transplantation. Preliminary studies suggest that aminoguanidine (AG) is an antioxidant compound. In this study, we investigated the antioxidant effects of AG (50 mg/kg, intraperitoneal) and its association with molecular pathways activated by IRI (30 min/48 h) in the kidney. The antioxidant effect of AG was studied measuring GSSH/GSSG ratio, GST activity, lipoperoxidation, iNOS, and Hsp27 levels. In addition, we examined the effect of AG on elements associated with cell survival, inflammation, endothelium, and mesenchymal transition during IRI. AG prevented lipid peroxidation, increased GSH levels, and recovered the GST activity impaired by IRI. AG was associated with inhibition of iNOS, Hsp27, endothelial activation (VE-cadherin, PECAM), mesenchymal markers (vimentin, fascin, and HSP47), and inflammation (IL-1β, IL-6, Foxp3, and IL-10) upregulation. In addition, AG reduced kidney injury (NGAL, clusterin, Arg-2, and TFG-β1) and improved kidney function (glomerular filtration rate) during IRI. In conclusion, we found new evidence of the antioxidant properties of AG as a renoprotective compound during IRI. Therefore, AG is a promising compound to treat the deleterious effect of renal IRI.
Keyphrases
- oxidative stress
- ischemia reperfusion injury
- quantum dots
- diabetic rats
- highly efficient
- dna damage
- induced apoptosis
- heat shock
- visible light
- stem cells
- heat shock protein
- bone marrow
- nitric oxide
- heat stress
- endothelial cells
- signaling pathway
- heart failure
- long non coding rna
- acute myocardial infarction
- dendritic cells
- subarachnoid hemorrhage
- atrial fibrillation
- blood brain barrier
- immune response
- brain injury
- fatty acid
- nitric oxide synthase
- fluorescent probe
- cerebral ischemia