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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5-6
pubmed:dateCreated
2005-6-20
pubmed:abstractText
Gram-positive sepsis is a major disease problem. However, the contribution of various immune cell types to pathogenesis remains unclear. By infecting scid and wild type BALB/c mice with Streptococcus pneumoniae we have found a situation in which natural killer (NK) cells can play a detrimental role in the response to infection. scid mice were found to be significantly more susceptible to local and systemic pneumococcal infection than controls; they had significantly higher bacterial loads, elevated inflammatory responses and more widespread lung pathology. Interestingly, depletion of NK cells in scid mice resulted in significantly lower bacteraemia and inflammatory cytokine production. Infection with pneumococci deficient in pneumolysin revealed the toxin was involved in cytokine production. Overall results indicate that elevated NK cell activity during pneumococcal pneumonia amplifies pulmonary and systemic inflammation, increases bacteraemia and results in poor outcome.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1286-4579
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
845-52
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Identification of a detrimental role for NK cells in pneumococcal pneumonia and sepsis in immunocompromised hosts.
pubmed:affiliation
Division of Infection and Immunity, IBLS, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, UK.
pubmed:publicationType
Journal Article