STUDYING THE CYTOTOXIC AND ANTIOXIDANT ACTIVITIES OF CRUDE EXTRACTS FROM ANACYCLUS NIGELLIFOLIUS BOISS GROWN IN NORTH LEBANON.

Objective: The objective of this study is to evaluate the chemical contents (total phenolic and total flavonoid contents) of the crude ethanolic and aqueous extracts from leaves and stems of a Lebanese plant and to evaluate their cytotoxic and antioxidant activities.Methods: Quantification of the total phenolic and total flavonoid contents of all extracts of Anacyclus nigellifolius from leaves and stems and the cytotoxic activity were evaluated through XTT assay, while antioxidant activities were evaluated using spectrophotometric analyses DPPH, H2O2, and chelating of ferrous ions tests.Results: The ethanolic extract from leaves and stem of A. nigellifolius was better than aqueous extract and showed a higher content in total phenolic and total flavonoid which was 39.48±0.04 and 13±0.03, respectively. On the other hand, the best value of IC50 of DPPH, H2O2, and chelating of ferrousions of ethanol extract from leaves was 0.1 mg/mL, 0.25 mg/mL, and 0.37 mg/mL, respectively, also, ethanol extract has significantly inhibited cells growth 293T and MCF7, a percentage of inhibition was in leaves, and it has reached the 70% and 54%, respectively.Conclusions: Both ethanolic and aqueous extracts of both parts of A. nigellifolius have shown high efficiency and good antioxidant and antiproliferation power. Hence, this plant can be used in the prevention of a number of diseases related to oxidative stress as well as might be used for inhibition of cancer cell line growth.