Linked Life Data

11712075

Source:http://linkedlifedata.com/resource/pubmed/id/11712075

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2001-11-16
pubmed:abstractText
Inosine is an endogenous purine, which has been recently shown to exert immunomodulatory, anti-inflammatory and anti-shock effects in rodent experimental systems. Some of these actions may be related to partial adenosine receptor agonistic effects. It has not been investigated previously whether inosine exerts similar immunomodulatory or anti-inflammatory effects in human cells or enzymes. Here we investigated the effects of inosine on the activation of human monocytes, neutrophils and epithelial cells in vitro. Furthermore, using a human inosine-5'-monophosphate dehydrogenase (IMPDH) enzyme, we examined the potential effects of inosine on the activity of IMPDH, an enzyme involved in the regulation of certain inflammatory/immune processes. Tumor necrosis factor alpha (TNF-alpha) production of bacterial lipopolysaccharide (LPS) stimulated whole blood was used as an indicator of human monocyte activation. The response was dose-dependently, partially suppressed in the presence of inosine. Inosine exerted a dose-dependent and, at the highest dose (3 mM), complete inhibition of the ability of human neutrophils activated with N-formyl-methionyl-leucyl-phenylalanine (fMLP) to induce cytochrome C reduction in vitro. In the human colon cancer cell line HT-29, inosine dose-dependently attenuated the production of IL-8. Inosine failed to affect the activity of IMPDH. Taken together, we conclude that inosine exerts anti-inflammatory effects in many human cell types. Further studies need to establish whether inosine supplementation exerts anti-inflammatory effects in human beings.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1107-3756
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
617-21
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Anti-inflammatory effects of inosine in human monocytes, neutrophils and epithelial cells in vitro.
pubmed:affiliation
Inotek Corporation, Beverly, MA 01915, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.