1. Gold nanoparticles potentiates N-acetylcysteine effects on neurochemicals alterations in rats after polymicrobial sepsis.
- Author
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Petronilho F, Tenfen L, Della Giustina A, Joaquim L, Novochadlo M, de Oliveira Junior AN, Bagio E, Goldim MPS, de Carli RJ, Bonfante SRSA, Metzker KLL, Muttini S, Dos Santos TM, de Oliveira MP, Engel NA, Rezin GT, Kanis LA, and Barichello T
- Subjects
- Animals, Antioxidants metabolism, Cytokines metabolism, Disease Models, Animal, Hippocampus drug effects, Hippocampus metabolism, Inflammation drug therapy, Inflammation metabolism, Male, Mitochondria drug effects, Mitochondria metabolism, Oxidation-Reduction drug effects, Oxidative Stress drug effects, Peroxidase metabolism, Rats, Rats, Wistar, Sepsis metabolism, Acetylcysteine metabolism, Gold pharmacology, Metal Nanoparticles administration & dosage, Sepsis drug therapy
- Abstract
Herein, we report the effect of gold nanoparticles (AuNP) and n-acetylcysteine (NAC) isolated or in association as important anti-inflammatory and antioxidant compounds on brain dysfunction in septic rats. Male Wistar rats after sham operation or caecal ligation and perforation (CLP) were treated with subcutaneously injection of AuNP (50 mg/kg) and/or NAC (20 mg/kg) or saline immediately and 12 h after surgery. Twenty-four hours after CLP, hippocampus and prefrontal cortex were obtained and assayed for myeloperoxidase (MPO) activity, cytokines, lipid peroxidation, protein carbonyls formation, mitochondrial respiratory chain, and CK activity. AuNP + NAC association decreased MPO activity and pro-inflammatory cytokines production, being more effective than NAC or AuNP isolated treatment. AuNP + NAC association and NAC isolated treatment decreased oxidative stress to lipids in both brain structures, while protein oxidation decreased only in the hippocampus of AuNP + NAC association-treated animals. Complex I activity was increased with AuNP + NAC association and NAC isolated in the hippocampus. Regarding CK activity, AuNP and AuNP + NAC association increased this marker in both brain structures after CLP. Our data provide the first experimental demonstration that AuNP and NAC association was able to reduce sepsis-induced brain dysfunction in rats by decreasing neuroinflammation, oxidative stress parameters, mitochondrial dysfunction and CK activity.
- Published
- 2020
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