Article (Scientific journals)
Characterization of the Immune Response of Cattle against Non-Cytopathic and Cytopathic Biotypes of Bovine Viral Diarrhoea Virus
Lambot, Michel; Douart, A.; Joris, Eliane et al.
1997In Journal of General Virology, 78 ((Pt 5)), p. 1041-7
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Abstract :
[en] Cross-infection studies of normal calves infected with homologous pairs of non-cytopathic and cytopathic bovine viral diarrhoea virus (BVDV) showed significant differences in both humoral and cell-mediated immune responses against either biotype over a period of 5 months. Serological assays after primary intranasal inoculation showed striking significant (P < 0.05) differences between biotypes. Neutralizing titres were detected earlier and were much higher with the non-cytopathic strain than with the homologous cytopathic strain. Significant biotype-specific differences were also observed in the lymphocyte proliferative responses of cattle following in vitro stimulation by non-cytopathic/cytopathic BVDV and the non-structural p80 protein (NS3). The secondary immune response seems to be largely influenced by the biotype used for the primary inoculation and only to a lesser extent by the biotype inoculated for the second time after an interval of 91 days. Animals exposed twice to the cytopathic biotype, which exhibited the lowest antibody titres, showed evidence of BVDV-specific cell-mediated immunity as measured by lympho-proliferation against BVDV. In contrast, the antibody response in the subgroup of animals inoculated twice with homologous non-cytopathic virus was inversely correlated with the proliferative responses. These differences in the immune response were not readily apparent for the two other remaining subgroups which had received cytopathic or non-cytopathic biotypes alone following the second inoculation with non-cytopathic or cytopathic viruses, respectively. Taken together, these data suggest that the differences in immune responses against cytopathic or non-cytopathic strains may be due to a Th1/Th2-like regulatory mechanism.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Lambot, Michel ;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Immunology/Vaccinology
Douart, A.;  National Veterinary School of Nantes > Medical Pathology
Joris, Eliane;  Pfizer Central Research
Letesson, J. J.;  Université de Namur - UNamur > Immunology
Pastoret, Paul-Pierre ;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Immunology/Vaccinology
Language :
English
Title :
Characterization of the Immune Response of Cattle against Non-Cytopathic and Cytopathic Biotypes of Bovine Viral Diarrhoea Virus
Publication date :
May 1997
Journal title :
Journal of General Virology
ISSN :
0022-1317
eISSN :
1465-2099
Publisher :
Society for General Microbiology, United Kingdom
Volume :
78
Issue :
(Pt 5)
Pages :
1041-7
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 November 2020

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