نتایج جستجو برای: theileria parva

تعداد نتایج: 2447  

Journal: :Molecular and biochemical parasitology 1997
D P Knowles L S Kappmeyer L E Perryman

Erythrocyte-stage Babesia equi expresses a 34-kDa immunodominant antigen recognized by antibody from persistently infected horses worldwide. This erythrocyte-stage surface protein, equi merozoite antigen-1 (EMA-1) is encoded by a single copy gene, and was previously shown to share 33% amino acid identity with similar sized proteins of Theileria sergenti and T. buffeli. A mean homology of 31% am...

Journal: :دامپزشکی 0
اصغر افشاری کارشناس ارشد موسسه تحقیقات واکسن وسرم سازی رازی غلامرضا حبیبی استادیار موسسه تحقیقات واکسن وسرم سازی رازی کسری اسماعیل نیا استادیار موسسه تحقیقات واکسن وسرم سازی رازی رویز شایان استاد دانشکده دامپزشکی دانشگاه تهران

tropical theileriosis is a tick-transmitted disease which caused by obligative intracellular protozoan theileria annulata. diagnosis is usually based on identification of parasite in giemsa stained smears of peripheral blood, spleen or lymph nodes. today, the molecular methods with high sensitivity and specificity are used for diagnosis of infected and carrier animals, epidemiological and phylo...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1988
D A Dobbelaere T M Coquerelle I J Roditi M Eichhorn R O Williams

Bovine lymphocytes infected with the parasite Theileria parva continuously secrete a growth factor that is essential for their proliferation in vitro and also constitutively express interleukin 2 receptors on their surface. Dilution of the secreted growth factor, caused by culturing cells at low density, results in retardation of culture growth. Human recombinant interleukin 2, however, effecti...

2017
Diaeldin A Salih Roger Pelle Joram M Mwacharo Moses N Njahira Wani L Marcellino Henry Kiara Agol K Malak Abdel Rahim M El Hussein Richard Bishop Robert A Skilton

East Coast fever (ECF), caused by Theileria parva infection, is a frequently fatal disease of cattle in eastern, central and southern Africa, and an emerging disease in South Sudan. Immunization using the infection and treatment method (ITM) is increasingly being used for control in countries affected by ECF, but not yet in South Sudan. It has been reported that CD8+ T-cell lymphocytes specific...

2016
Timothy K. Connelley Xiaoying Li Niall MacHugh Didier Colau Simon P. Graham Pierre van der Bruggen Evans L. Taracha Andy Gill William Ivan Morrison

Immunity against Theileria parva is associated with CD8 T-cell responses that exhibit immunodominance, focusing the response against limited numbers of epitopes. As candidates for inclusion in vaccines, characterization of responses against immunodominant epitopes is a key component in novel vaccine development. We have previously demonstrated that the Tp249-59 and Tp1214-224 epitopes dominate ...

2010
F. Katzer D. Ngugi A.R. Walker D.J. McKeever

The tick-borne protozoan parasite Theileria parva causes East Coast fever (ECF), a severe lymphoproliferative disease of cattle that is a major constraint to the improvement of livestock in eastern, central and southern Africa. Studies in cattle experimentally infected with T. parva have shown that the protective cytotoxic T lymphocyte (CTL) response is tightly focused, with individual animals ...

Journal: :Infection and immunity 2008
Simon P Graham Roger Pellé Mat Yamage Duncan M Mwangi Yoshikazu Honda Ramadhan S Mwakubambanya Etienne P de Villiers Evelyne Abuya Elias Awino James Gachanja Ferdinand Mbwika Anthony M Muthiani Cecelia Muriuki John K Nyanjui Fredrick O Onono Julius Osaso Victor Riitho Rosemary M Saya Shirley A Ellis Declan J McKeever Niall D MacHugh Sarah C Gilbert Jean-Christophe Audonnet W Ivan Morrison Pierre van der Bruggen Evans L N Taracha

Immunity against the bovine intracellular protozoan parasite Theileria parva has been shown to be mediated by CD8 T cells. Six antigens targeted by CD8 T cells from T. parva-immune cattle of different major histocompatibility complex (MHC) genotypes have been identified, raising the prospect of developing a subunit vaccine. To facilitate further dissection of the specificity of protective CD8 T...

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