Linked Life Data

1535780

Source:http://linkedlifedata.com/resource/pubmed/id/1535780

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1992-8-11
pubmed:abstractText
Our study examined the effects of supernatants derived from CD8+ lymphocytes treated with high molecular weight components of Mycobacterium tuberculosis on cytokine production. Such suppressor but not control supernatants increased the production of IL-4 and IL-6 whilst suppressing IL-1 beta, TNF-alpha, IL-2 and IFN-gamma production by monocytes and lymphocytes. The effects on cytokine production were time dependent being observed as early as 4 hours with peak activity observed at 24 hours. The inhibition of IL-1 beta and TNF-alpha by monocytes appeared to be related to increases in IL-6 levels present in supernatants of non-adherent lymphocytes incubated with mycobacterial components. This was confirmed by studies demonstrating that the addition of recombinant IL-6 to cultures depressed the production of these cytokines. Furthermore the addition of monoclonal anti-IL6 to such cultures restored the production of IL-1 beta and TNF-alpha. The results suggest that mycobacterial components inhibit host cellular functions by manipulating the host's cytokine network.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0921-299X
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
87-95
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Supernatants derived from CD8+ lymphocytes activated by mycobacterial fractions inhibit cytokine production. The role of interleukin-6.
pubmed:affiliation
Department of Immunology, School of Pathology, University of Witwatersrand, Johannesburg, Republic of South Africa.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't