Linked Life Data

12570925

Source:http://linkedlifedata.com/resource/pubmed/id/12570925

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2003-2-6
pubmed:abstractText
Magnesium deficiency has been shown to increase nitric oxide (NO) levels in plasma and to aggravate endotoxin lethality. The present study was performed to examine the effects of magnesium (Mg(2+))-deficient culture medium, with and without endotoxin (LPS), on NO release and inducible NOS (iNOS) mRNA levels in alveolar macrophages isolated from rats. Decreasing the Mg(2+) concentration in the culture medium from 0.39 mM (normal-Mg(2+) medium) to 0.021 mM (Mg(2+)-deficient medium) increased NO release from alveolar macrophages for 2 h. However, LPS stimulation in Mg(2+)-deficient medium had little effect on NO release. The increased NO release in Mg(2+)-deficient medium was suppressed completely by L-NAME and aminoguanidine. Dexamethasone, pyrrolidine dithiocarbamate and curcumin strongly inhibited NO release. Verapamil, U73122, TMB-8 and W-7 had no significant effect on NO release induced by Mg(2+) deficiency. Preculture of macrophages with Mg(2+)-deficient medium for 22 h markedly increased NO release and iNOS mRNA levels for a further 2 h; these increments were suppressed completely by curcumin. These results suggest that Mg(2+) deficiency enhances NO production via iNOS by alveolar macrophages. In this experimental condition, we can not suggest that NO production from alveolar macrophage plays an essential role in the pathogenesis of enhanced endotoxin lethality in Mg-deficient rats.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0024-3205
pubmed:author
pubmed:issnType
Print
pubmed:day
31
pubmed:volume
72
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1247-57
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Magnesium-deficient medium enhances NO production in alveolar macrophages isolated from rats.
pubmed:affiliation
Department of Veterinary Pharmacology, Faculty of Agriculture, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan.
pubmed:publicationType
Journal Article