Linked Life Data

9001323

Source:http://linkedlifedata.com/resource/pubmed/id/9001323

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1997-2-11
pubmed:abstractText
Nitric oxide (NO) is a gas released by the airway epithelium, but the mechanism regulating NO release is unclear. We hypothesized that lung mononuclear cell release of tumor necrosis factor alpha (TNF) and interleukin-1beta (IL-1) would induce epithelial cells to release NO. Lung mononuclear cells were obtained from seven normal volunteers by bronchoalveolar lavage and cultured with Escherichia coli lipopolysaccharide for 24 h. The mononuclear cell culture-conditioned media (M-CM) were then applied to cultures of the murine lung epithelial cell line, LA-4. Nitrite and nitrite + nitrate concentrations were 0.9 +/- 0.1 and 11.8 +/- 2.4 microM in the M-CM. Culturing LA-4 cells line with the M-CM (1:10 dilution) resulted in a marked and time-dependent increase in nitrite or nitrite + nitrate compared with LA-4 cells cultured in media alone (2.4 +/- 0.5 versus 0.9 +/- 0.1 microm and 16.6 +/- 0.6 versus 11.8 +/- 2.4 microM after 24 h). Antibodies to TNF and/or IL-1 significantly reduced the nitrite or nitrite + nitrate concentrations and the concentrations of TNF and IL-1 in the M-CM correlated with nitrite concentrations in the LA-4 culture supernatant fluids (r2 = 0.848 and 0.956). Inducible nitric oxide synthase (iNOS) protein and mRNA examined by immunohistochemistry and Northern blot analysis revealed a marked elevation in the cells cultured with the M-CM which was significantly reduced by TNF and IL-1 antibodies. These data demonstrate that mononuclear cells can stimulate LA-4 cells to express iNOS by releasing TNF and IL-1.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1073-449X
pubmed:author
pubmed:issnType
Print
pubmed:volume
155
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
268-73
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Human lung mononuclear cells induce nitric oxide synthase in murine airway epithelial cells in vitro: role of TNFalpha and IL-1beta.
pubmed:affiliation
Research Service, Overton Brooks VA Medical Center, Shreveport, Louisiana 71101, USA.
pubmed:publicationType
Journal Article