alexa Ameliorating Effects Of Thymoquinone On Titanium Dioxide Nanoparticles Induced Toxicity In Rats
ISSN: 2476-2067

Toxicology: Open Access
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8th World Congress on Toxicology and Pharmacology
April 13-15, 2017 Dubai, UAE

Khaled M A Hassanein and Yasmin O El-Amir
Jazan University, Saudi Arabia
Assiut University, Egypt
Posters & Accepted Abstracts: Toxicol Open Access
DOI: 10.4172/2476-2067.C1.003
Abstract
The ameliorating effect of Thymoquinone (TQ), the major active ingredient of Nigella sativa seeds, on Titanium Dioxide naonparticles (TiO2 NPs) induced toxicity and oxidative stress in Sprague-Dawley (SD) rats was investigated. 40 rats were divided into 4 equal groups. The first, second, third and fourth groups received TiO2 NPs, TiO2 NPs and TQ, TQ only for 6 weeks. The fourth group served as the control. Exposure to TiO2 NPs resulted in increased liver enzyme markers, oxidative stress indices, tumor necrosis factor alpha (TNF-α) and DNA damage was assessed by comet assay. TiO2 NPs resulted in decreased level of testosterone hormone. Histopathological alterations were also observed in the liver, brain, lung and testes. Transmission electron microscopy revealed changes in the hepatocytes cytoplasm related to the oxidative stress and presence of nanoparticles in the testicular tissues. Co-administration of TQ with TiO2 NPs decreased the level of liver enzymes, oxidative stress, TNF-α and DNA damage and ameliorates the level of testosterone. Furthermore, TQ increased the total antioxidant and glutathione (GSH) levels. In conclusion, TiO2 NPs induce hazardous effects in different organs and are closely related to oxidative stress. TQ have anti-oxidative and anti-inflammatory effect against the detrimental effect of TiO2 NPs.
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