Cytotoxicity of the beta-carboline alkaloids harmine and harmaline in human cell assays in vitro.

beta-Carboline alkaloids are natural products widely distributed in plants and also found in alcoholic beverages, well-cooked foods and tobacco smoke. Various authors have reported genotoxic activities of several carboline in prokaryotic and eukaryotic cells that have been attributed to their abilities to intercalate into DNA. But studies on the genotoxic and on the cytotoxic potencies in human cells in vitro are not found in the literature.

[Plant lectins and their effects on cancer].

Recently, there has been increased interest in the potential health benefits of plant lectins, particularly due to their anticancer effect. This updated review discusses literature data published on the anticancer activities of plant lectins and their possible molecular mechanism(s) of action.

Cancer chemopreventive and tumoricidal properties of saffron (Crocus sativus L.).

Since cancer is the most common cause of death in the world population, the possibility that readily available natural substances from plants, vegetables, herbs, and spices may be beneficial in the prevention of cancer warrants closer examination. Saffron in filaments is the dried, dark red stigmata of Crocus sativus L. flowers and it is used as a spice, food colorant, and a drug in medicine.