title: Oleic Acid Protects Against Oxidative Stress Exacerbated by Cytarabine and Doxorubicin in Rat Brain.
abstract: The objective of this study was to analyze the effect of doxorubicin and cytarabine on biogenic amines and oxidative biomarkers in the brain of rats treated with oleic acid.
  
  
  
  Thirty-six Wistar rats distributed in 6 groups, were treated as follows: group 1 (control), NaCl 0.9%; group 2 doxorubicin (1mg/kg); group 3 cytarabine (70mg /kg); group 4 oleic acid (1500μl/kg); group 5 doxorubicin + oleic acid; group 6 cytarabine + oleic acid. All compounds were administered intraperitoneally for 5 days. The Rats were sacrificed after receiving the last administration and their brains were dissected in cortex, hemispheres, and cerebellum/medulla oblongata. Blood samples were obtained on sacrifice to assess the levels of glucose and triglycerides. In each brain region, lipoperoxidation (TBARS), H2O2, Na+, K+ ATPase, glutathione (GSH), serotonin metabolites (5-HIAA) and dopamine were measured using validated methods.
  
  
  
  Cytarabine decreased the levels of dopamine, TBARS, GSH, H2O2 and ATPase in all regions. Doxorubicin combined with oleic acid increased the levels of GSH in cortex, and decreased ATPase in cerebellum/medulla oblongata.
  
  
  
  These results suggest that the reduction of dopamine and oxidant effect during cytarabine treatment could result in brain injury but could be prevented by oleic acid supplementation.
authors.forename: David Calderón
authors.initials: DC
authors.lastname: Guzmán
authors.forename: Norma Osnaya
authors.initials: NO
authors.lastname: Brizuela
authors.forename: Maribel Ortíz
authors.initials: MO
authors.lastname: Herrera
authors.affiliation: Laboratory of Pharmacology, National Institute of Pediatrics, Av Imán #1, 3er piso, Col Cuicuilco, CP 04530, Mexico City, Mexico.
authors.forename: Hugo Juárez
authors.initials: HJ
authors.lastname: Olguín
authors.forename: Ernestina Hernández
authors.initials: EH
authors.lastname: García
authors.forename: Armando Valenzuela
authors.initials: AV
authors.lastname: Peraza
authors.forename: Gerardo Barragán
authors.initials: GB
authors.lastname: Mejía
mesh_terms: D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000378:metabolism*; D003561:Cytarabine / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology*; D004317:Doxorubicin / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology*; D008297:Male; D019301:Oleic Acid / Q000008:administration & dosage / Q000737:chemistry / Q000494:pharmacology*; D018384:Oxidative Stress / Q000187:drug effects*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D003561:Cytarabine; D019301:Oleic Acid; D004317:Doxorubicin