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Flynn, J.N.McKeever, Declan J.Sileghem, M.R.Naessens, Jan[Modulation of the phenotype and function of bovine afferent lymph cells during infection with Trypanosoma congolense]Modulation of the phenotype and function of bovine afferent lymph cells during infection with Trypanosoma congolense

Previous data showed that six out of a group of nine cattle inoculated with NS1-p67, a recombinant form of a 67-KDa Theileria parva sporozoite surface protein, were immune to East Coast fever. This bacterialy expressed antigen encoded all 709 amino acid residues of p67 fused to the C-terminal end...


Nene, VishvanathInumaru, S.McKeever, Declan J.Morzaria, S.P.Shaw, M.Musoke, A.J.[Characterization of an insect cell-derived Theileria parva sporozoite vaccine antigen and immunogenicity in cattle]Characterization of an insect cell-derived Theileria parva sporozoite vaccine antigen and immunogenicity in cattle

Initial laboratory trials of an experimental subunit vaccine against Theileria parva based on the 67-kDa major sporozoite surface antigen revealed a range of responses to challenge. We have analyzed convergence in seven sets of monozygotic twins which suggests that genetic factors may have an i...


Ballingall, K.T.Luyai, A.Rowlands, G.J.Sales, J.Musoke, A.J.Morzaria, S.P.McKeever, Declan J.[Bovine leukocyte antigen major histocompatibility complex class II DRB3*2703 and DRB3*1501 alleles are associated with variation in levels of protection against Theileria parva challenge following immunization with the sporozoite p67 antigen]Bovine leukocyte antigen major histocompatibility complex class II DRB3*2703 and DRB3*1501 alleles are associated with variation in levels of protection against Theileria parva challenge following immunization with the sporozoite p67 antigen

Peripheral blood mononuclear cells (PBMC) from immune cattle proliferate in the presence of autologous Cowdria ruminantium-infected endothelial cells and monocytes. Endothelial cells required treatment with T-cell growth factors to induce class II major histocompatibility complex expression prior...


Mwangi, D.M.Mahan, S.M.Nyanjui, J.K.Taracha, E.L.N.McKeever, Declan J.[Immunization of cattle by infection with Cowdria ruminantium elicits T lymphocytes that recognize autologous, infected endothelial cells and monocytes]Immunization of cattle by infection with Cowdria ruminantium elicits T lymphocytes that recognize autologous, infected endothelial cells and monocytes

The p67 sporozoite antigen of Theileria parva has been fused to the C-terminal secretion signal of Escherichia coli hemolysin and expressed in secreted form by attenuated Salmonella dublin areA strain SL5631. The recombinant p67 antigen was detected in the supernatant of transformed bacterial cul...


Gentschev, I.Glaser, I.Goebel, W.McKeever, Declan J.Musoke, A.J.Heussler, V.T.[Delivery of the p67 sporozoite antigen of Theileria parva by using recombinant Salmonella dublin: Secretion of the product enhances specific antibody responses in cattle]Delivery of the p67 sporozoite antigen of Theileria parva by using recombinant Salmonella dublin: Secretion of the product enhances specific antibody responses in cattle

Cowdria-specific CD4<sup(+)> T-cell lines generated from immunized cattle responded to both soluble and membrane proteins of the agent. The lines produced the Cowdria-inhibitory cytokine IFN-<gamma> in response to soluble antigens fractionated by gel filtration and fast performance liquid chromat...


Totte, P.Nyanjui, J.Bensaid, A.McKeever, Declan J.[Bovine CD4<sup(+)> T-cell lines reactive with soluble and membrane antigens of Cowdria ruminantium]Bovine CD4<sup(+)> T-cell lines reactive with soluble and membrane antigens of Cowdria ruminantium

Cattle that recover from Theileria parva infection are solidly immune to rechallenge with homologous parasites. Most of the ILRAD/ILRI immunological research into the disease has focused on defining the basis of this protection. Over 15 years of basic and applied immunological research at ILRAD/I...


McKeever, Declan J.[Multi-component subunit vaccines against Theileria parva]Multi-component subunit vaccines against Theileria parva

ILRAD outlined two different areas of research concern to the trypanosomiasis program. One goal was to identify trypanosomal antigens responsible for the immunopathogenesis of the disease by determining how the infection of cattle with trypanosomes affects their immune system. A second goal was...


McKeever, Declan J.Sileghem, M.R.Gardiner, Peter R.Gaidulis, L.[Summary of discussion]Summary of discussion

We evaluated sexual recombination in the apicomplexan parasite Theileria parva using genome-wide marker analysis of haploid sporozoite populations obtained from infected Rhipicephalus appendiculatus ticks. Analysis of 231 parasite clones derived by in vitro infection of bovine lymphocytes reveale...


Katzer, F.Ngugi, D.Oura, C.Bishop, Richard P.Taracha, E.L.N.Walker, A.R.McKeever, Declan J.[Extensive genotypic diversity in a recombining population of the apicomplexan parasite Theileria parva]Extensive genotypic diversity in a recombining population of the apicomplexan parasite Theileria parva

Development of improved vaccine and diagnostic-based disease control strategies has benefited considerably from advances in biotechnology, particularly those relating to recombinant DNA technology. Efficiency of the vaccine development process has been increased at all levels, from the analysis o...


McKeever, Declan J.Rege, J.E.O.[Vaccines and diagnostic tools for animal health: The influence of biotechnology]Vaccines and diagnostic tools for animal health: The influence of biotechnology

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