Results 21 to 30 of about 19,573 (217)

Antigenic variation by protozoan parasites: insights from Babesia bovis [PDF]

Molecular Microbiology, 2005
SummaryAntigenic variation of surface membrane proteins by protozoan parasites enables these pathogenic organisms to avoid host immune responses and thus perpetuate long‐term infections. Babesia bovis, the causative agent of severe babesiosis in cattle, was previously shown to undergo antigenic variation through modifications to its primary surface ...
Ron, Dzikowski, Kirk, Deitsch
openaire   +2 more sources

Protozoan predation, diversifying selection, and the evolution of antigenic diversity in Salmonella [PDF]

Proceedings of the National Academy of Sciences, 2004
Extensive population-level genetic variability at the Salmonella rfb locus, which encodes enzymes responsible for synthesis of the O-antigen polysaccharide, is thought to have arisen through frequency-dependent selection (FDS) by means of exposure of this pathogen to host immune systems.
Hans, Wildschutte, David M, Wolfe, Aletheia, Tamewitz, Jeffrey G, Lawrence   +3 more
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Two Theileria parva CD8 T cell antigen genes are more variable in buffalo than cattle parasites, but differ in pattern of sequence diversity [PDF]

, 2011
<p><b>Background:</b> Theileria parva causes an acute fatal disease in cattle, but infections are asymptomatic in the African buffalo (Syncerus caffer).
Taracha, E. L. N., Mwangi Duncan M., Graham Simon P., Paul R. Spooner, Graham, S. P., Saya, RM, Toye, PG, Njahira, Moses N., Pelle, R., Richard P Bishop, Musoke, AJ, Silva, J., Rosemary M. Saya, Philip G Toye, Toye Philip G., Njahira, M.N., Saya, R. A., Evans L. N. Taracha, Musoke, A. J., Pelle Roger, Odongo, DO, Silva Joana C., Roger Pelle, Musoke Anthony J., Morrison, Ivan, Weir, W., Silva, J.C., Anthony J. Musoke, Joana C Silva, Graham, SP, Bishop, Richard P., Odongo, David O., Simon P Graham, Paul R Spooner, Taracha, EL, Morrison W. Ivan, Pelle, R, Bishop, R.P., Toye, P. G., Moses N Njahira, Saya Rosemary M., Duncan M. Mwangi, Spooner, P.R., Osaso Julius, Mwangi, D.M., W. Ivan Morrison, Toye, P.G., Silva, J. C., David O. Odongo, Osaso, J, Morrison, WI, Simon P. Graham, Moses N. Njahira, Mwangi, D. M., Evans L N Taracha, Taracha Evans L. N., Mwangi, DM, Odongo, D.O., Taracha, E.L.N., Bishop, RP, Morrison, W.I., Bishop, R. P., Njahira, M. N., Saya, R.M., Spooner, PR, Musoke, A.J., Saya, Rosemary M., Spooner, P. R., Richard P. Bishop, Pelle, Roger, Mwangi, David Miano, Spooner Paul R., Rosemary M Saya, Odongo David O., Njahira, MN, Joana C. Silva, Odongo, D. O., Duncan M Mwangi, Julius Osaso, W Ivan Morrison, Toye, Philip G., Njahira Moses N., Philip G. Toye, Morrison, W. Ivan, David O Odongo, Weir William, Bishop Richard P., Silva, JC, Osaso, J., Anthony J Musoke, Graham, S.P., William Weir, Weir, W   +92 more
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Determination the Time of Toxoplasmosis among Pregnant Women by using IgG Avidity to Various Toxoplasma Gondii Antigens [PDF]

Kirkuk Journal of Science, 2019
Toxoplasmosis is caused by Toxoplasma gondii, which is an intracellular protozoan parasite. Its main host is the cat. It is one of the most common human parasites. The main objective of this study is to determine the time of T.
Sanarya Tawfiq, Zainab Rezaig, Mohemid Al- Jebouri   +2 more
doaj   +1 more source

Insight into the current Toxoplasma gondii DNA vaccine: a review article

Expert Review of Vaccines, 2023
Introduction Toxoplasma gondii (T.gondii) is a widespread protozoan with significant economic losses and public health importance. But so far, the protective effect of reported DNA-based vaccines fluctuates widely, and no study has demonstrated complete ...
Xirui Zhang, Hao Yuan, Yasser S. Mahmmod, Zipeng Yang, Mengpo Zhao, Yining Song, Shengjun Luo, Xiu-Xiang Zhang, Zi-Guo Yuan   +8 more
doaj   +1 more source

Induction of humoral immune response to multiple recombinant Rhipicephalus appendiculatus antigens and their effect on tick feeding success and pathogen transmission [PDF]

, 2016
BACKGROUND: Rhipicephalus appendiculatus is the primary vector of Theileria parva, the etiological agent of East Coast fever (ECF), a devastating disease of cattle in sub-Saharan Africa.
Scoles, Glen A., Stephen Mwaura, Odongo, David O., Glen A. Scoles, David O. Odongo, Olds, Cassandra L., David Odongo (3497480), Richard Bishop (59737), Richard Bishop, Claudia Daubenberger (212658), Glen Scoles (3448283), Daubenberger, Claudia, Stephen Mwaura (3485219), Bishop, Richard, Cassandra L. Olds, Mwaura, Stephen, Claudia Daubenberger, Cassandra Olds (3485216)   +17 more
core   +1 more source

Toxoplasma gondii Recombinant Antigens in the Serodiagnosis of Toxoplasmosis in Domestic and Farm Animals

Animals, 2020
Toxoplasmosis is caused by an intracellular protozoan, Toxoplasma gondii, and is a parasitic disease that occurs in all warm-blooded animals, including humans.
Bartłomiej Ferra, Lucyna Holec-Gąsior, Weronika Grąźlewska   +2 more
doaj   +1 more source

Improved canine and human visceral leishmaniasis immunodiagnosis using combinations of synthetic peptides in enzyme-linked immunosorbent assay. [PDF]

PLoS Neglected Tropical Diseases, 2012
BACKGROUND: Zoonotic visceral leishmaniasis (VL) is a severe infectious disease caused by protozoan parasites of the genus Leishmania and the domestic dogs are the main urban parasite reservoir hosts. In Brazil, indirect fluorescence antibody tests (IFAT)
Míriam Maria Costa, Marcos Penido, Mariana Silva dos Santos, Daniel Doro, Eloísa de Freitas, Marilene Susan Marques Michalick, Gabriel Grimaldi, Ricardo Tostes Gazzinelli, Ana Paula Fernandes   +8 more
doaj   +1 more source

Immunity to Intracellular Salmonella Depends on Surface-associated Antigens [PDF]

, 2012
Invasive Salmonella infection is an important health problem that is worsening because of rising antimicrobial resistance and changing Salmonella serovar spectrum.
Rizos Konstantin, Beatrice Claudi (126116), Dirk Bumann (126124), Dirk Bumann, Somedutta Barat (126107), Barat, Somedutta, Rizos, K., Bumann, D., Schemmer, Anne K, Claudi Beatrice, Neil Burton (126123), Anne K Schemmer, Barat Somedutta, Dennis Kirchhoff (126121), Somedutta Barat, Alexander Schmidt (68515), Kirchhoff, D., Alain Mazé, Willer, Yvonne, Anne K. Schemmer (126119), Kirchhoff Dennis, Rizos, Konstantin, Dennis Kirchhoff, Bumann, Dirk, Burton Neil, Schemmer, A., Claudi, B., Mazé, Alain, Schmidt Alexander, Schemmer Anne K., Yvonne Willer (126110), Konstantin Rizos (126113), Willer Yvonne, Yvonne Willer, Willer, Y., Burton, Neil, Bumann Dirk, Alexander Schmidt, Mazé Alain, Beatrice Claudi, Schmidt, A., Alain Mazé (126117), Mazé, A., Claudi, Beatrice, Kirchhoff, Dennis, Barat, S., Konstantin Rizos, Burton, N., Schemmer, Anne K., Schmidt, Alexander, Neil Burton   +50 more
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Molecular players of homologous recombination in protozoan parasites: implications for generating antigenic variation

Infection, Genetics and Evolution, 2004
A major impediment to vaccine development against infections caused by protozoan parasites such as Plasmodium falciparum and Trypanosoma is the extraordinary ability of these parasites to rapidly change their surface molecules, a phenomenon known as antigenic variation.
Mrinal Kanti, Bhattacharyya, Douglas E, Norris, Nirbhay, Kumar   +2 more
openaire   +3 more sources