Linked Life Data

1382324

Source:http://linkedlifedata.com/resource/pubmed/id/1382324

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1992-10-22
pubmed:abstractText
Altered immune functions have been demonstrated in mice following exposure to dimethylnitrosamine (DMN). In particular, changes in cell-mediated immune responses resulted from chronic DMN exposure in vivo. Since cytokines are potent immunoregulatory peptides, experiments were performed to determine whether DMN exposure results in the induction of serum-borne inflammatory cytokines. Animals were exposed to either vehicle (PBS) or DMN (5.0 mg/kg) every 24 hr for 14 days. Serum and liver samples were obtained from individual mice at 0, 1, 2, 3, 6, 12, and 24 hr following the first exposure, with additional samples collected every 24 hr preceding the daily DMN exposure. Sera were then analyzed for IL-1 beta, IL-3, IL-6, CSF-1, GM-CSF, and TNF-alpha activities using either biological or immunological assays. In addition, liver total cellular RNA was probed for the induction of IL-1 beta transcripts using the solution hybridization/RNase protection assay. IL-1 beta, IL-6, and TNF-alpha serum activities were observed within 2 hr of DMN exposure and returned to vehicle control levels by 3 days even though DMN exposure was maintained. Chronic expression of cytokine activity (after 72 hr) was only observed for GM-CSF. A rapid induction of IL-1 beta transcripts (within 1 hr) in both vehicle and DMN-treated animals was observed by solution hybridization. However, by 3 hr postexposure, transcript levels decreased in the vehicle-treated animals while remaining elevated in the DMN-treated animals for 6 hr. These results demonstrated that DMN exposure in vivo induced: (1) the expression of serum-borne cytokine activities, and (2) IL-1 beta transcription in liver tissue.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0041-008X
pubmed:author
pubmed:issnType
Print
pubmed:volume
116
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
110-6
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Dimethylnitrosamine (DMN)-induced IL-1 beta, TNF-alpha, and IL-6 inflammatory cytokine expression.
pubmed:affiliation
Department of Animal Sciences, University of Illinois, Urbana 61801.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.