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Young, A.S.Koech, D.K.[Biological response modifiers: Cytokines in health and disease and their therapeutic value]Biological response modifiers: Cytokines in health and disease and their therapeutic value

Development of anaemia in inflammatory diseases is cytokine-mediated. Specifically, the levels of tumour necrosis factor-alpha (TNF-alpha), produced by activated macrophages, are correlated with severity of disease and anaemia in infections and chronic disease. In African trypanosomiasis, anaemia...


Naessens, JanKitani, H.Nakamura, Y.Yagi, Y.Sekikawa, K.Iraqi, F.A.[TNF-alpha mediates the development of anaemia in a murine Trypanosoma brucei rhodesiense infection, but not the anaemia associated with a murine Trypanosoma congolense infection]TNF-alpha mediates the development of anaemia in a murine Trypanosoma brucei rhodesiense infection, but not the anaemia associated with a murine Trypanosoma congolense infection

C57BL/6 mice deficient in one or two copies of the gene for tumor necrosis factor alpha (TNF-alpha) were more susceptible to Trypanosoma congolense infection than their resistant, wild-type counterparts. The number of TNF-alpha genes was correlated with the capacity to control parasitaemia and ...


Naessens, JanKitani, H.Momotani, E.Sekikawa, K.Nthale, J.M.Iraqi, F.A.[Susceptibility of TNF-alpha-deficient mice to Trypanosoma congolense is not due to a defective antibody response]Susceptibility of TNF-alpha-deficient mice to Trypanosoma congolense is not due to a defective antibody response

Natural resistance to African trypanosomiasis in certain Bos taurus cattle in West Africa, called trypanotolerance, may hold solutions for control of this economically crippling disease. Comparison of immune responses between trypanotolerant and trypanosusceptible cattle have shown some differen...


Naessens, JanTeale, A.J.Sileghem, M.R.[Identification of mechanisms of natural resistance to African trypanosomiasis in cattle]Identification of mechanisms of natural resistance to African trypanosomiasis in cattle

A number of linkage studies in human populations have identified a locus ( pfbi) on Chromosome 5q31-q33 controlling Plasmodiun falciparum blood infection levels. This region contains numerous candidate genes encoding immunological molecules such as cytokines, growth factors and growth-factor rec...


Hernández Valladares, M.Rihet, P.Ole-MoiYoi, O.K.Iraqi, F.A.[Mapping of a new quantitative trait locus for resistance to malaria in mice by a comparative mapping approach with human chromosome 5q31-q33]Mapping of a new quantitative trait locus for resistance to malaria in mice by a comparative mapping approach with human chromosome 5q31-q33

To evaluate vaccinia virus as a delivery system for recombinant antigen in cattle, calves were immunized with a recombinant vaccinia virus (rVV) expressing the sporozoite surface antigen (p67) of Theileria parva (V-67) combined with those expressing bovine IL-4 (V-IL4) or IL-2 (V-IL2). The anti-p...


Honda, Y.Waithaka, M.M.Taracha, E.L.N.Duchateau, L.Musoke, A.J.McKeever, Declan J.[Delivery of the Theileria parva p67 antigen to cattle using recombinant vaccinia virus: IL-2 enhances protection]Delivery of the Theileria parva p67 antigen to cattle using recombinant vaccinia virus: IL-2 enhances protection

The mechanisms whereby trypanotolerant N'Dama cattle control infection with Trypanosoma congolense are unknown. Previous studies have suggested that the monocytes of N'Dama cattle are more highly activated during infection than those of trypanosus ceptible Boan cattle. However, we have recently r...


Taylor, K.Mertens, B.Lutje, V.Saya, R.[Trypanosoma congolense infection of trypanotolerant N'Dama (Bos taurus) cattle is associated with decreased secretion of nitric oxide by interferon-gamma-activated monocytes and increased transcription of interleukin-10]Trypanosoma congolense infection of trypanotolerant N'Dama (Bos taurus) cattle is associated with decreased secretion of nitric oxide by interferon-gamma-activated monocytes and increased transcription of interleukin-10

The protozoan parasite Theileria parva infects and transforms bovine lymphocytes, giving rise to a fatal lympho-proliferative condition known as East Coast fever. Although immune cattle mount strong cytolytic T. lymphocyte responses to the parasite, naive animals appear unable to respond and deve...


McKeever, Declan J.Nyanjui, J.K.Ballingall, K.T.[In vitro infection with Theileria parva is associated with IL10 expression in all bovine lymphocyte lineages]In vitro infection with Theileria parva is associated with IL10 expression in all bovine lymphocyte lineages

There is growing evidence that immunity of cattle to Cowdria ruminantium infection is mediated by T lymphocytes. C. ruminantium antigens that stimulate these responses are therefore of considerable importance to the development of a sub-unit vaccine against the disease. We have examined T cell re...


Mwangi, D.M.McKeever, Declan J.Nyanjui, J.K.Barbet, A.F.Mahan, S.M.[Immunisation of cattle against heartwater by infection with Cowdria ruminantium elicits T lymphocytes that recognise major antigenic proteins 1 and 2 of the agent]Immunisation of cattle against heartwater by infection with Cowdria ruminantium elicits T lymphocytes that recognise major antigenic proteins 1 and 2 of the agent

The membrane-associated form of the variable surface glycoprotein (mfVSG) from African trypanosomes is a potent macrophage activator capable of inducing production of tumor necrosis factor z (TNFalfa) in both bovine and murine models. Using a bovine model. we have re-investigated the hypothesis t...


Sileghem, M.R.Saya, R.Grab, D.J.Naessens, Jan[An accessory role for the diacylglycerol moiety of variable surface glycoprotein of African trypanosomes in the simulation of bovine monocytes]An accessory role for the diacylglycerol moiety of variable surface glycoprotein of African trypanosomes in the simulation of bovine monocytes

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