Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
52
pubmed:dateCreated
2008-12-1
pubmed:abstractText
A H5N2 low pathogenic avian influenza virus (LPAIV) was isolated from a natural reservoir in Bavaria during a routine screen and was used as a vaccine strain to scrutinize the immune response involved in cross-protection after challenge infection with a H5N1 highly pathogenic avian influenza virus (HPAIV). The challenge virus was also isolated from a natural reservoir in Bavaria. Wild type, antibody deficient (muMT), CD4(-/-) and CD8(-/-) mice were infected with the apathogenic H5N2 vaccine strain and challenge infection with a 100-fold MLD(50) of the H5N1 strain was performed 80 days later. While 100% of the wild type and 100% of the CD8(-/-) mice stayed healthy, only 50% of the CD4(-/-) and none of the antibody deficient mice were protected. These results support the view that the humoral immune response and to certain extends the CD4(+) T helper cells are a prerequisite for cross-protective immunity against H5 influenza virus.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0264-410X
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6965-74
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed-meshheading:18848593-Animals, pubmed-meshheading:18848593-Antibodies, Viral, pubmed-meshheading:18848593-Antibody Formation, pubmed-meshheading:18848593-Antibody Specificity, pubmed-meshheading:18848593-CD4-Positive T-Lymphocytes, pubmed-meshheading:18848593-Cell Line, pubmed-meshheading:18848593-Cross Reactions, pubmed-meshheading:18848593-Female, pubmed-meshheading:18848593-Flow Cytometry, pubmed-meshheading:18848593-Hemagglutination Inhibition Tests, pubmed-meshheading:18848593-Immunity, Cellular, pubmed-meshheading:18848593-Immunocompetence, pubmed-meshheading:18848593-Influenza A Virus, H5N1 Subtype, pubmed-meshheading:18848593-Influenza A Virus, H5N2 Subtype, pubmed-meshheading:18848593-Influenza Vaccines, pubmed-meshheading:18848593-Lymphocyte Count, pubmed-meshheading:18848593-Male, pubmed-meshheading:18848593-Mice, pubmed-meshheading:18848593-Mice, Inbred C57BL, pubmed-meshheading:18848593-Neutralization Tests, pubmed-meshheading:18848593-Orthomyxoviridae Infections, pubmed-meshheading:18848593-Respiratory System, pubmed-meshheading:18848593-Vaccination, pubmed-meshheading:18848593-Viral Plaque Assay
pubmed:year
2008
pubmed:articleTitle
Antibodies and CD4(+) T-cells mediate cross-protection against H5N1 influenza virus infection in mice after vaccination with a low pathogenic H5N2 strain.
pubmed:affiliation
Friedrich-Loeffler-Institut, Institute of Immunology, Paul-Ehrlich Str. 28, D-72076 Tübingen, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't