Abstract Title:

Radiation-modifying abilities of Nigella sativa and Thymoquinone on radiation-induced nitrosative stress in the brain tissue.

Abstract Source:

Phytomedicine. 2013 Nov 21. pii: S0944-7113(13)00432-7. doi: 10.1016/j.phymed.2013.10.023. [Epub ahead of print]

Abstract Author(s):

Adem Ahlatci, Abdurahman Kuzhan, Seyithan Taysi, Omer Can Demirtas, Hilal Eryigit Alkis, Mehmet Tarakcioglu, Ali Demirci, Derya Caglayan, Edibe Saricicek, Kadir Cinar

Article Affiliation:

Department of Radiation Oncology, Gaziantep University, Medical School, Gaziantep, Turkey.


To investigate Nigella sativa oil (NSO) and Thymoquinone (TQ) for their antioxidant effects on the brain tissue of rats exposed to ionizing radiation. Fifty-four male albino Wistar rats, divided into six groups, were designed as group I (normal control group) did not receive NSO, TQ or irradiation; group II (control group of TQ) received dimethyl sulfoxide and sham irradiation; group III (control group of NSO) received saline and sham irradiation; group IV (irradiation plus NSO group) received both 5 Gray of gamma irradiation to total cranium and NSO; group V (irradiation plus TQ group) received both irradiation and TQ; group VI (irradiation alone group) received irradiation plus saline. Alterations in nitric oxide (NO) and peroxynitrite (ONOO(-)) levels, and nitric oxide synthase (NOS) enzyme activity were measured by biochemical methods in homogenized brain tissue of rats. Levels of NO and ONOO(-), and enzyme activity of NOS in brain tissue of the rats treated with NSO or TQ were found to be lower than in received IR alone (p<0.002) Nigella sativa oil (NSO) and its active component, TQ, clearly protect brain tissue from radiation-induced nitrosative stress.

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