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Year : 2020  |  Volume : 16  |  Issue : 6  |  Page : 1506-1516

Pro-apoptotic and anti-neoplastic impact of luteolin on solid Ehrlich carcinoma.bearing mice exposed to gamma radiation

Department of Radiation Biology, National Centre for Radiation Research and Technology, Atomic Energy Authority, Cairo, Egypt

Correspondence Address:
Khaled Shaaban Azab
Department of Radiation Biology, Radiation Research Division National Centre for Radiation Research and Technology, Atomic Energy Authority, Cairo
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_1116_19

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Background: Cancer remains a major health issue and the second foremost root of morbidity worldwide behind cardiovascular diseases. Apoptosis had linked to the eradication of possibly malignant cells, hyperplasia, and tumor progression. Objective: The present study is an endeavor to evaluate the influence of luteolin, a modifier to apoptotic regulator on the tumor growth and the tumor cell sensitivity to ionizing radiation in Ehrlich solid tumor-bearing mice (E). Materials and Methods: Mice were immunized with Ehrlich carcinoma cells (2.5 × 106 cells/mouse), received consecutive equal doses of luteolin, 1.25 mg/mouse/day and exposed to 6.5 Gy of whole-body gamma irradiation (0.46 Gy/min). Results: Luteolin markedly suppresses the developing of tumor in E mice group or mice which bearing tumor with exposure to radiation (E + R group) which has collimated with significant inhibition in protein expression of inflammatory molecules cyclooxygenase 2 and the concentration of (prostaglandin E2). Also, matrix metalloproteinase-2, 9 proteins concentrations significantly decreased with amelioration in apoptotic regulators (Caspase-3 and Granzyme-B activities). The expression of signal transducer and activator of transcription (STAT) and tumor necrosis factor-alpha genes meliorated significantly. Besides, the level of oxidant/antioxidant (reduced glutathione/malondialdehyde) markedly improved. Obviously, the most reduction of changes in all measured parameters has appeared in tumor bearing mice, injected with luteolin and exposed to gamma radiation (E + Luteolin + R group). Conclusion: It could be suggested that luteolin has a potential beneficial effect against cancer. This could be due to its ability on the induction of apoptosis, inhibition of inflammatory response, downregulation of angiogenic factors as well as increase sensitivity of tumor cells to gamma radiation.

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