Antioxidant and cytotoxic activities of three species of tropical seaweeds

Table 1 Cytotoxic activity of different solvent extracts of P. tetrastromatica, C. racemosa and T. ornata in human adenocarcinoma MCF-7 cells and the human non-tumourigenic 184B5 cells

Cytotoxic activity is expressed as IC₅₀ (μg/mL) ± SD (n = 3) and IC₅₀ (μg/mL) ± SD (n = 3) for MCF-7 and 184B5 cells, respectively, which is the concentration of extract at which 50 % of cell growth was inhibited relative to cells incubated in the presence of 0.1 % DMSO vehicle control. MCF-7 and 184B5 cells were treated with doxorubicin as a positive control. The drug showed IC₅₀ values at 0.21 ± 1.25 μg/ml and 0.02 ± 1.97 μg/ml in MCF-7 and 184B5 cells, respectively
ND: Not detected

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