Abstract
Violacein is a poorly water-soluble antitumoraland antibacterial drug. The solubility can be enhanced by complexation withβ-cyclodextrin. The inclusion complex was prepared by the co-precipitation method in molarratios of 1 : 1 and 1 : 2 of violacein/β-cyclodextrin, respectively. The acutetoxicity (E. coli strain) of violacein did not changeup to 400 μM, either in thepresence or absence of cyclodextrin. Cytotoxicity (V-79 cellculture) through DNA and MTT assays was significantlydecreased in the presence of the 1 : 2 molar ratio complex.Studies on erythrocyte lipid peroxidation by the thiobarbituricacid (TBA) methodshowed that violacein and violacein/β-CD (1 : 2) at100 μM cause 50% and 80% inhibition, respectively. At 500 μM theviolacein/β-CD complexinhibited lipid peroxidation completely; however, withfree violacein only 65% inhibition was reached at that concentration.
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De Azevedo, M.B.M., Alderete, J., Rodriguez, J.A. et al. Biological Activities of Violacein, a New Antitumoral Indole Derivative, in an Inclusion Complex with β-Cyclodextrin. Journal of Inclusion Phenomena 37, 93–101 (2000). https://doi.org/10.1023/A:1008138807481
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DOI: https://doi.org/10.1023/A:1008138807481