Title: Sera from dams of calves with bovine neonatal pancytopenia contain alloimmune antibodies directed against calf leukocytes
Authors: Pardon, Bart ×
Stuyven, Edith
Stuyvaert, Sabrina
Hostens, Miel
Dewulf, Jeroen
Goddeeris, Bruno Maria
Cox, Eric
Deprez, Piet #
Issue Date: Jun-2011
Publisher: Elsevier
Series Title: Veterinary Immunology and Immunopathology vol:141 issue:3-4 pages:293-300
Abstract: Bovine neonatal pancytopenia (BNP) is a bleeding and pancytopenic syndrome in neonatal calves, which recently emerged all over Europe. The present study tested whether antibodies directed against calf leukocytes are present in sera from known BNP dams. Sera from BNP dams (n=11) were combined with leukocytes from 11 calves (5 BNP survivors and 6 controls). After adding a fluorescein conjugated F(ab')(2) fragment of rabbit anti-bovine IgG (H&L) the level of antibody binding was measured by flow cytometry. As control groups both sera from dams from BNP affected (n=48) as from unaffected (n=54) herds were combined with leukocytes from the same calves. With sera from BNP dams, antibody binding could be visualised by immunofluoresence in both peripheral blood as in bone marrow smears. Mean fluoresence intensity values of all leukocyte subpopulations were significantly higher for the BNP dams compared to both control groups (P<0.01). BNP dams showed significantly more antibody binding on multiple leukocyte subpopulations of both BNP survivors and control calves and this from cut off values of MFI 100 onwards (P<0.01). The BNP survivor calves reacted significantly more often with sera from the BNP dams than the control calves (P<0.01). In conclusion the present study supports the hypothesis that BNP is an immune-mediated disease.
ISSN: 0165-2427
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division of Gene Technology (-)
× corresponding author
# (joint) last author

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