Journal article
Nitroaryl-1,4-dihydropyridines as antioxidants against rat liver microsomes oxidation induced by iron/ascorbate, Nitrofurantoin and naphthalene
Toxicology in vitro, v 21(8), pp 1610-1618
01 Dec 2007
PMID: 17669617
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
1,4-Dihydropyridines (DHPs) used in the treatment of cardiovascular diseases, are calcium channel antagonists and also antioxidant agents. These drugs are metabolized through cytochrome P-450 oxidative system, majority localized in the hepatic endoplasmic reticulum. Several lipophilic drugs generate oxidative stress to be metabolized by this cellular system. Thus, DHP antioxidant properties may prevent the oxidative stress associated with hepatic biotransformation of drugs.
In this work, we tested the antioxidant capacity of several synthetic nitro-phenyl-DHPs. These compounds (I-IV) inhibited the microsomal lipid peroxidation, UDPGT oxidative activation and microsomal thiols oxidation; all phenomena induced by Fe3+/ascorbate, a generator system of oxygen free radicals. As the same manner, these compounds inhibited the oxygen consumption induced by Cu2+/ascorbate in the absence of microsomes. Furthermore, compound III (2,6-dimethyl-4-(4-nitro phenyl)-1,4-dihydropyridin-3,5-ethyldicarboxylate) and compound V (N-ethyl-2,6-dimethyl-4-(4-nitrophenyl)-1,4-dihydropyridin-3,5-methyl-dicarboxylate) inhibited the microsomal lipid peroxidation induced by Nitrofurantoin and naphthalene in the presence of NADPH. Oxidative stress induced on endoplasmic reticulum may alter the biotransformation of drugs, so, modifying their plasmatic concentrations and therapeutic effects. When drugs which are activated by biotransformation are administered together with antioxidant drugs, such as DHPs, oxidative stress induced in situ may be prevented. (C) 2007 Elsevier Ltd. All rights reserved.
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Details
- Title
- Nitroaryl-1,4-dihydropyridines as antioxidants against rat liver microsomes oxidation induced by iron/ascorbate, Nitrofurantoin and naphthalene
- Creators
- Maria Eugenia Letelier - University of ChilePaz Entrala - University of ChileCamilo Lopez-Alarcon - Pontificia Universidad Católica de ChileVictor Gonzalez-Lira - University of ChileAlfredo Molina-Berrios - University of ChileJuan Cortes-Troncoso - University of ChileJose Jara-Sandoval - University of ChilePaola Santander - University of ChileLuis Nunez-Vergara - University of Chile
- Publication Details
- Toxicology in vitro, v 21(8), pp 1610-1618
- Publisher
- Elsevier
- Number of pages
- 9
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Drexel University
- Web of Science ID
- WOS:000251558100029
- Scopus ID
- 2-s2.0-36148969342
- Other Identifier
- 991019415662704721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Toxicology