6533b860fe1ef96bd12c304f

RESEARCH PRODUCT

Disturbance of antioxidant capacity produced by beauvericin in CHO-K1 cells

Beatriz MallebreraGuillermina FontMaría-josé Ruiz

subject

Antioxidantmedicine.medical_treatmentGlutathione reductaseCHO CellsToxicologymedicine.disease_causeAntioxidantsScavengerAndrologychemistry.chemical_compoundCricetulusDepsipeptidesmedicineAnimalsCell Proliferationchemistry.chemical_classificationGlutathione PeroxidaseGlutathione peroxidaseGeneral MedicineGlutathioneGlutathioneBeauvericinAcetylcysteineGlutathione ReductaseEnzymechemistryBiochemistryOxidative stress

description

Glutathione (GSH) levels, glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione-S-transferase (GST) as antioxidant defense system were evaluated in CHO-K1 cells after beauvericin (BEA) exposure. The effect of N-acetyl-cysteine (NAC) pre-treatment was assessed. GSH levels significantly decrease 18% and 29% after 5 μM of BEA in fresh medium and NAC pre-treatment, respectively compared to their controls. The GPx activity increased significantly from 35% to 66% in fresh medium and 20% in NAC pre-treatment. GR activity decreased after 5 μM of BEA up to 43% and 53% in fresh medium and NAC pre-treatment, respectively. The GST activity increased in fresh medium (from 61% to 89%) and decreased (from 22% to 35%) after NAC pre-treatment. Comparing BEA exposure in fresh medium and NAC pre-treatment, GSH levels, GPx activity and GST activity increased 716%, 458% and 206%, respectively respect to fresh medium; conversely no changes were observed in GR activity. In addition, NAC is an effective scavenger of BEA. GSH and related enzymes play an antioxidant role in the defense system of CHO-K1 cells exposed to BEA.

yearjournalcountryeditionlanguage
2014-01-15Toxicology Letters
https://doi.org/10.1016/j.toxlet.2014.02.023