Linked Life Data

11803245

Source:http://linkedlifedata.com/resource/pubmed/id/11803245

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2002-1-22
pubmed:abstractText
Reactive oxygen species are considered important regulators in the pathogenesis and in the development of pancreatitis. The transcription factor nuclear factor kappaB (NF-kappaB) is activated by reactive oxygen species and regulates the gene expressions of inflammatory cytokines. The present study investigates (1) the susceptibility of isolated rat pancreatic acinar cells to oxidant attacks produced by adenosine diphosphate/ferrous iron, hypoxanthine/xanthine oxidase, and neutrophils primed with 4beta-phorbol 12beta-myristate 13alpha-acetate (PMA) and (2) the potential of small-molecule antioxidants (N-acetylcysteine, beta-carotene, rebamipide, allopurinol) and superoxide dismutase (SOD) to prevent such injury and oxidant-mediated NF-kappaB activation and inflammatory cytokine production in the cells. As a result, oxidative stress resulted in a time-dependent increase in lipid peroxide production in pancreatic acinar cells which was inhibited by small-molecule antioxidants and SOD. PMA-primed neutrophils induced NF-kappaB activation and increased the production of cytokines (IL-6, TNF-alpha) in the cells. This was in parallel with lipid peroxide production. Small-molecule antioxidants and SOD inhibited NF-kappaB activation and cytokine production in acinar cells caused by PMA-primed neutrophils. In conclusion, oxidative stress activates NF-kappaB, resulting in upregulation of inflammatory cytokines in pancreatic acinar cells. Small-molecule antioxidants might be clinically useful anti-inflammatory agents by inhibiting oxidant-induced cytokine production.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0031-7012
pubmed:author
pubmed:copyrightInfo
Copyright 2002 S. Karger AG, Basel
pubmed:issnType
Print
pubmed:volume
64
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
63-70
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Oxidative stress induced cytokine production in isolated rat pancreatic acinar cells: effects of small-molecule antioxidants.
pubmed:affiliation
Department of Pharmacology, Yonsei University College of Medicine, Seoul 120-752, Korea.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't