| Author | Elingold, Igal | |
| Author | Taboas, Melisa I. | |
| Author | Casanova, Marta B. | |
| Author | Galleano, Mónica | |
| Author | Silva, Raphael S. F. | |
| Author | Menna-Barreto, Rubem F. S. | |
| Author | Pinto, Antonio Ventura | |
| Author | Castro, Solange L. de | |
| Author | Costa, Lidia E. | |
| Author | Dubin, Marta | |
| Access date | 2020-03-12T15:32:21Z | |
| Available date | 2020-03-12T15:32:21Z | |
| Document date | 2009 | |
| Citation | ELINGOLD, Igal et al. Mechanism of action of novel naphthofuranquinones on rat liver microsomal peroxidation. Chemico-Biological Interactions, v. 182, p. 213-219, Sept. 2009. | pt_BR |
| ISSN | 0009-2797 | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/40297 | |
| Language | eng | pt_BR |
| Publisher | Elsevier | pt_BR |
| Rights | restricted access | |
| Subject in Portuguese | Naftoquinonas | pt_BR |
| Subject in Portuguese | Estresse oxidativo | pt_BR |
| Subject in Portuguese | Doença de Chagas | pt_BR |
| Subject in Portuguese | Naphthofuranquinones | pt_BR |
| Subject in Portuguese | Peroxidação lipídica | pt_BR |
| Title | Mechanism of action of novel naphthofuranquinones on rat liver microsomal peroxidation | pt_BR |
| Type | Article | |
| DOI | 10.1016/j.cbi.2009.09.002 | |
| Abstract | In order to elucidate the effect on mammal systems of new derivatives from 2-hydroxy-3-allyl-naphthoquinone, alpha-iodinated naphthofuranquinone (NPPN-3223), beta-iodinated naphthofuranquinone (NPPN-3222) and beta-methyl naphthofuranquinone (NPPN-3226) synthesized as possible trypanocidal agents, their effect on rat liver microsomal lipid peroxidation was investigated. They (a) inhibited NADPH-dependent, iron-catalyzed microsomal rat liver lipid peroxidation; (b) did not inhibit the tert-butyl hydroperoxide-dependent lipid peroxidation; (c) did not inhibit ascorbate-lipid peroxidation with the exception of NPPN-3226 which did inhibit it; (d) stimulated NADPH oxidation and microsomal oxygen uptake; (e) increased superoxide anion formation by NADPH-supplemented microsomes and (f) stimulated ascorbate oxidation. The three drugs were reduced to their seminaphthofuranquinone radical by the liver NADPH-P450 reductase system, as detected by ESR measurements. These results support the hypothesis that naphthofuranquinones reduction by microsomal NADPH-P450 reductase and semiquinone oxidation by molecular oxygen diverts electrons, preventing microsomal lipid peroxidation. In addition, hydroquinones and/or semiquinones formed by naphthofuranquinones reduction would be capable of lipid peroxidation inhibition and on interacting with the lipid peroxide radicals can lead to an antioxidant effect as we suggested for NPPN-3226 in close agreement to the inhibition of ascorbate-lipid peroxidation. Due to the properties of these molecules and their incoming structure developments, naphthofuranquinones would be considered as potentially promising therapeutic agents, mainly against Chagas disease. | pt_BR |
| Affilliation | Universidad de Buenos Aires-CONICET. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos. Buenos Ayres, Argentina. | pt_BR |
| Affilliation | Universidad de Buenos Aires-CONICET. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos. Buenos Ayres, Argentina. | pt_BR |
| Affilliation | Universidad de Buenos Aires-CONICET. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos. Buenos Ayres, Argentina. | pt_BR |
| Affilliation | Universidad de Buenos Aires-CONICET. Facultad de Farmacia y Bioquímica. Laboratorio de Radicales Libres. Buenos Ayres, Argentina. | pt_BR |
| Affilliation | Universidade Federal do Rio de Janeiro. Centro de Ciências da Saúde. Núcleo de Pesquisas em Produtos Naturais. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Celular. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Universidade Federal do Rio de Janeiro. Centro de Ciências da Saúde. Núcleo de Pesquisas em Produtos Naturais. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Celular. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | Universidad de Buenos Aires-CONICET. Facultad de Farmacia y Bioquímica. Laboratorio de Radicales Libres. Buenos Ayres, Argentina / Universidad de Buenos Aires-CONICET. Facultad de Medicina. Instituto de Investigaciones Cardiológicas. Buenos Ayres, Argentina. | pt_BR |
| Affilliation | Universidad de Buenos Aires-CONICET. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos. Buenos Ayres, Argentina. | pt_BR |
| Subject | Naphthoquinones | pt_BR |
| Subject | Lipid peroxidatio | pt_BR |
| Subject | Chagas disease | pt_BR |
| Subject | Naphthofuranquinones | pt_BR |
| Subject | Oxidative stress | pt_BR |
| e-ISSN | 1872-7786 | |
| Embargo date | 2025-01-01 | |
| xmlui.metadata.dc.subject.ods | 03 Saúde e Bem-Estar | |
