Journal
VACCINE
Volume 22, Issue 29-30, Pages 4029-4034Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.vaccine.2004.03.045
Keywords
hantavirus; Dobrava virus; hemorrhagic fever with renal syndrome; nucleocapsid protein; rodents
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Dobrava hantavirus (DOBV) causes a severe form of hemorrhagic fever with renal syndrome (HFRS) for which there is no therapy or vaccine available. We compared the immunogenicity and protective efficacy of recombinant DOBV nucleocapsid protein (rDOBV N) given with Alum or Freund's as adjuvant, or PBS, in C57/BL6 mice. All mice given Alum or Freund's seroconverted as did 6/8 mice given rDOBV N with PBS. Reciprocal geometric mean total IgG-titers were 5380, 18,100, and 800, respectively, while the mean IgG1/IgG2a ratios were 17.5, 9.25, and 12. respectively. Furthermore, ELIspot assays showed higher levels of IL-4 producing peripheral blood mononuclear cells (PBMCs) in the group given Alum as compared to the other groups. Interestingly, only mice receiving rDOBV N with Freund's adjuvant were protected from challenge (75% protected), indicating that the strong Th2-type of immune response induced by Alum against rDOBV N did not induce protection in mice. (C) 2004 Elsevier Ltd. All rights reserved.
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