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Type: Artigo de periódico
Title: Cytotoxicity Of Derivatives From Dehydrocrotonin On V79 Cells And Escherichia Coli.
Author: da Silva Melo, P
Durán, N
Haun, M
Abstract: New derivatives from dehydrocrotonin (DHC, compound I), with the same anti-ulcerogenic properties but less toxicity were synthesised by reducing the cyclohexenone moiety of DHC with NaBH(4) (compound II), by reducing the cyclohexenone and lactone moieties with LiAlH(4) (compound III) and by transforming the lactone moiety into an amide (compound IV) using dimethylamine. The cytotoxicity of these derivatives from DHC was assayed on V79 fibroblast cell line. Three independent endpoints for cytotoxicity were evaluated; namely, the nucleic acid content (NAC), tetrazolium reduction (MTT) and neutral red uptake (NRU). IC(50) values of 540 and 350 microM were obtained for compound II in the NRU and NAC tests, respectively. Compound III was less toxic than the other DHC derivatives (IC(50)=1800 microM) on V79 cells based on NAC assay. Compound IV showed an IC(50) ranging from 350 to 600 microM based on the three endpoints evaluated. The three compounds were less toxic on V79 cells than DHC. DHC, compounds II, III and IV did not change the respiration rate of Escherichia coli on the acute toxicity assay.
Subject: Animals
Cell Count
Cell Line
Cell Survival
Diterpenes, Clerodane
Dose-response Relationship, Drug
Escherichia Coli
Neutral Red
Nitroblue Tetrazolium
Nucleic Acids
Plants, Medicinal
Toxicity Tests
Citation: Toxicology. v. 159, n. 3, p. 135-41, 2001-Feb.
Rights: fechado
Identifier DOI: 
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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