title: Caffeic acid phenethyl ester protects against tamoxifen-induced hepatotoxicity in rats.
abstract: Tamoxifen (TAM) is widely used in the treatment and prevention of breast cancer. Adverse effects of TAM include hepatotoxicity. Caffeic acid phenethyl ester (CAPE), an active component of propolis, has been used in folk medicine for diverse ailments. In the current study, the protective effects of CAPE against TAM-induced hepatotoxicity in female rats were evaluated. TAM (45 mg/kg/day, i.p., for 10 consecutive days) resulted in an elevation of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP), depletion of liver reduced glutathione (GSH) and accumulation of oxidized glutathione (GSSG) and lipid peroxidation (LPO). Also, TAM treatment resulted in inhibition of hepatic activity of glutathione reductase (GR), glutathione peroxidase (GPx), superoxide dismutase (SOD) and catalase (CAT). Further, it raised liver tumor necrosis factor-alpha (TNF-alpha) level and induced histopathological changes. Pretreatment with CAPE (2.84 mg/kg/day; i.p., for 20 consecutive days, starting 10 days before TAM injection) significantly prevented the elevation in serum activity of the assessed enzymes. CAPE significantly inhibited TAM-induced hepatic GSH depletion and GSSG and LPO accumulation. Consistently, CAPE normalized the activity of GR, GPx, SOD and CAT, inhibited the rise in TNF-alpha and ameliorated the histopathological changes. In conclusion, CAPE protects against TAM-induced hepatotoxicity.
authors.affiliation: Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
authors.forename: Ashwag A
authors.initials: AA
authors.lastname: Albukhari
authors.forename: Hana M
authors.initials: HM
authors.lastname: Gashlan
authors.forename: Hesham A
authors.initials: HA
authors.lastname: El-Beshbishy
authors.forename: Ayman A
authors.initials: AA
authors.lastname: Nagy
authors.forename: Ashraf B
authors.initials: AB
authors.lastname: Abdel-Naim
mesh_terms: D000818:Animals; D018931:Antineoplastic Agents, Hormonal / Q000037:antagonists & inhibitors* / Q000633:toxicity*; D000975:Antioxidants / Q000378:metabolism; D002109:Caffeic Acids / Q000494:pharmacology*; D056486:Chemical and Drug Induced Liver Injury / Q000201:enzymology / Q000473:pathology / Q000517:prevention & control*; D005260:Female; D005978:Glutathione / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000201:enzymology / Q000473:pathology; D008111:Liver Function Tests; D009504:Neutrophils / Q000187:drug effects / Q000201:enzymology; D010626:Phenylethyl Alcohol / Q000031:analogs & derivatives* / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley; D017382:Reactive Oxygen Species; D013629:Tamoxifen / Q000037:antagonists & inhibitors* / Q000633:toxicity*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism; D014969:Xanthine Oxidase / Q000378:metabolism
chemical_list: D018931:Antineoplastic Agents, Hormonal; D000975:Antioxidants; D002109:Caffeic Acids; D017382:Reactive Oxygen Species; D014409:Tumor Necrosis Factor-alpha; D013629:Tamoxifen; D014969:Xanthine Oxidase; C055494:caffeic acid phenethyl ester; D005978:Glutathione; D010626:Phenylethyl Alcohol