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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Suddek, Ghada M. |
| Description | Country affiliation: Egypt Author Affiliation: Suddek GM ( Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.) |
| Abstract | One of the major reasons for terminating a clinical trial is the liver toxicity induced by chemotherapy. Tamoxifen (TAM) is an anti-estrogen used in the treatment and prevention of hormone-dependent breast cancer. Tamoxifen therapy may cause hepatic injury. The seeds of Nigella sativa, which contain the active ingredient thymoquinone (TQ), have been used in folk medicine for diverse ailments. TQ is reported to possess anticancer and hepatoprotective effects. In this study, the protective effects of TQ against TAM-induced hepatotoxicity in female rats were evaluated. Four groups of rats were used: control; TAM; TQ; TAM+TQ. TAM (45 mg·(kg body mass)(-1)·day(-1), by intraperitoneal injection (i.p.), for 10 consecutive days) resulted in elevated serum levels of alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, lactate dehydrogenase, total bilirubin, and gamma glutamyl transferase, as well as depletion of reduced glutathione in the liver and accumulation of lipid peroxides. Also, TAM treatment inhibited the hepatic activity of superoxide dismutase. Further, it raised the levels of tumor necrosis factor alpha in the liver and induced histopathological changes. Pretreatment with TQ (50 mg·(kg body mass)(-1)·day(-1); orally, for 20 consecutive days, starting 10 days before TAM injection) significantly prevented the elevation in serum activity of the assessed enzymes. TQ significantly inhibited TAM-induced hepatic GSH depletion and LPO accumulation. Consistently, TQ normalized the activity of SOD, inhibited the rise in TNF- and ameliorated the histopathological changes. In conclusion, TQ protects against TAM-induced hepatotoxicity. |
| File Format | HTM / HTML |
| ISSN | 00084212 |
| e-ISSN | 12057541 |
| Journal | Canadian Journal of Physiology and Pharmacology |
| Issue Number | 8 |
| Volume Number | 92 |
| Language | English |
| Publisher | Canadian Science Publishing |
| Publisher Date | 2014-08-01 |
| Publisher Place | Canada |
| Access Restriction | Open |
| Subject Keyword | Discipline Physiology Discipline Pharmacology Antineoplastic Agents, Hormonal Adverse Effects Benzoquinones Therapeutic Use Drug-induced Liver Injury Drug Therapy Estrogen Antagonists Liver Drug Effects Protective Agents Tamoxifen Animals Pathology Nigella Sativa Rats, Sprague-dawley |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Physiology (medical) Pharmacology |
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