| Halothane induces oxidative stress and NF-kappaB activation in rat liver: protective effect of propofol. | |
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MedLine Citation:
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PMID: 16965849 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We investigated the effects of propofol on markers of oxidative stress, nuclear factor kappa B (NF-kappaB) activation and inducible nitric oxide synthase (iNOS) expression in liver of rats treated with halothane under hypoxic conditions. Male Wistar rats received halothane 1%/oxygen 14%, oxygen 14%/propofol 60 mg kg(-1) i.p., or halothane 1%/oxygen 14%/propofol 60 mg kg(-1) i.p. Morphological examination showed complete loss of architecture with massive necrosis of parenchyma in the halothane group, while only minor histological abnormalities were observed in rats receiving halothane plus propofol. The cytosolic concentration of TBARS and the hydroperoxide-initiated chemiluminescence increased significantly in the liver of animals from the halothane group (+62% and +40% versus controls, respectively), and this increase was abolished by propofol administration. Halothane induced a marked activation of NF-kappaB (+180%), and resulted in a significant decrease of the nonphosphorylated form of the inhibitor IkappaBalpha (-53%), while phosphorylated IkappaBalpha protein level was markedly increased (+146%). Propofol administration lowered these effects to +30% (NF-kappaB), -26% (nonphosphorylated IkappaBalpha), and +56% (phosphorylated IkappaBalpha). The increase of iNOS protein level (+59%) induced by halothane was significantly reduced to +22% by additional administration of propofol. Results obtained show that administration of propofol inhibits oxidative stress, NF-kappaB nuclear traslocation and iNOS overexpression in liver of rats receiving halothane. Propofol treatment, by inhibiting the NF-kappaB signal transduction pathway, might block the production of noxious mediators involved in the development of halothane-induced injury. |
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Authors:
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Luis J Brasil; Beatriz San-Miguel; Nelson A Kretzmann; Jose L Gomes Do Amaral; Claudio G Zettler; Norma Marroni; Javier González-Gallego; María J Tuñón |
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Publication Detail:
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Type: Journal Article Date: 2006-07-21 |
Journal Detail:
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Title: Toxicology Volume: 227 ISSN: 0300-483X ISO Abbreviation: Toxicology Publication Date: 2006 Oct |
Date Detail:
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Created Date: 2006-09-25 Completed Date: 2006-11-29 Revised Date: 2009-11-19 |
Medline Journal Info:
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Nlm Unique ID: 0361055 Medline TA: Toxicology Country: Ireland |
Other Details:
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Languages: eng Pagination: 53-61 Citation Subset: IM |
Affiliation:
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Irmandade Santa Casa de Misericordia, Porto Alegre, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Anesthetics, Inhalation
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adverse effects* Animals Anoxia / metabolism, pathology Antioxidants / pharmacology* Blotting, Western Drug-Induced Liver Injury / etiology, metabolism, pathology, prevention & control Electrophoretic Mobility Shift Assay Halothane / adverse effects* I-kappa B Proteins / biosynthesis Liver / drug effects*, metabolism, pathology Male NF-kappa B / metabolism* Nitric Oxide Synthase Type II / biosynthesis Oxidative Stress / drug effects* Propofol / pharmacology* Rats Rats, Wistar |
| Chemical | |
Reg. No./Substance:
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0/Anesthetics, Inhalation; 0/Antioxidants; 0/I-kappa B Proteins; 0/NF-kappa B; 151-67-7/Halothane; 2078-54-8/Propofol; EC 1.14.13.39/Nitric Oxide Synthase Type II |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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