Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
|
pubmed:dateCreated |
1997-8-21
|
pubmed:abstractText |
Resistance to the Leishmaniae is associated with interferon (IFN)-gamma mediated activation of macrophages. In this study, Balb/c mice were infected with three Leishmania strains that cause progressively growing cutaneous lesions without obvious dissemination: L. mexicana mexicana giving rise to rapidly growing lesions, and L. (Viannia) panamensis and L. mexicana-like, which both cause slowly developing lesions. The rate of lesion growth was compared to induction of early local and systemic IFN-gamma responses. All the three parasite strains induced increased levels of IFN-gamma transcripts 24 h after infection. Infection with the more aggressive strain resulted in a notably lower IFN-gamma response when compared to infection with the two low pathogenic strains. Interleukin-4 (IL-4) mRNA appeared 7 days after infection with L. (Viannia) panamensis and L. mexicana-like but not with L. mexicana mexicana. Thus, virulence of these Leishmania strains could not be associated with induction of IL-4 during the first week after infection. In addition, none of the Leishmania strains induced detectable mRNA for IL-12 or inducible nitric oxide synthase (iNOS). These data present a picture somewhat different from that which has been described in L. major experimental infection.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Jul
|
pubmed:issn |
0300-9475
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
46
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
35-40
|
pubmed:dateRevised |
2008-11-21
|
pubmed:meshHeading |
pubmed-meshheading:9246206-Animals,
pubmed-meshheading:9246206-Gene Expression,
pubmed-meshheading:9246206-Interferon-gamma,
pubmed-meshheading:9246206-Interleukin-4,
pubmed-meshheading:9246206-Leishmania mexicana,
pubmed-meshheading:9246206-Leishmaniasis, Cutaneous,
pubmed-meshheading:9246206-Lymph Nodes,
pubmed-meshheading:9246206-Mice,
pubmed-meshheading:9246206-Mice, Inbred BALB C,
pubmed-meshheading:9246206-RNA, Messenger,
pubmed-meshheading:9246206-Spleen,
pubmed-meshheading:9246206-Time Factors
|
pubmed:year |
1997
|
pubmed:articleTitle |
Experimental infection of Balb/c mice with Leishmania panamensis and Leishmania mexicana: induction of early IFN-gamma but not IL-4 is associated with the development of cutaneous lesions.
|
pubmed:affiliation |
Microbiology and Tumorbiology Center, Karolinska Institute, Stockholm, Sweden.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|