Estimation of cytotoxic potency by brine shrimp lethality bioassay application of Clerodendrum infortunatum Linn.

Objective:To learn a scientific and systematic knowledge of anticancer,antimicrobial and pharmacological activities of natural products and estimate cytotoxic potency by using ethanol and chloroform extracts of root,leaf and stem of Clerodendrum infortunatum(Verbenaceae)due to its random use in customary and traditional medicine to cure common ailments such as intestinal disorder,diarrhea,tuberculosis and respiratory problems etc.Methods:The in vitro application was carried out with the bench-top bioassay method by using brine shrimp lethality bioassay.Results:All of the crude extracts were found to be lethal and effective.The LC50 value of ethyl alcohol fraction of root was 20.845 mg/L compared to the standard drug tetracycline of 14.675 mg/L to brine shrimp nauplii,indicating that the extracts were biologically active.Conclusions:The cytotoxic study of LC50 value showed that a good correlation with the antibiotic tetracycline.From the comparative correlation error bars and percentage,we understood that ethyl alcohol fraction of root extract was very effective.This study serves as a basis for further research to lead compounds to be isolated so that it may be as a template for the implications of these results for bioactivity and drug discovery potential of herbal products.