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A Field study to Estimate the Prevalence of Bovine African Trypanosomosis in Butaleja District, Uganda OAK
JING, Zhang; MAGONA, Joseph W; SAKURAI, Tatsuya; THEKISOE, Oriel M. M; OTIM, Charles P; SUGIMOTO, Chihiro; INOUE, Noboru; 井上, 昇.
Prevalence of bovine trypanosomosis was determined from a total of 203 blood samples collected from Butaleja district, eastern Uganda. All samples were examined by microhematocrit centrifuge test (MHC), PCR and ELISA. ELISA was performed in accordance with the OIE standard procedures using Trypanosoma brucei gambiense procyclic form crude antigens. PCR were utilized to identify the species and the subspecies of trypanosome. The overall prevalence of bovine African trypanosomosis was 8.9% by MHC, and 45.3% by the ELISA. Since substantial number (12 out of 18) of MHC positive samples were negative in the PCR tests, we could not conclude the most epidemic trypanosome species in the studied area. Nevertheless, the PCR results suggests that the most prevalent...
Palavras-chave: Bovine; Prevalence; Trypanosome; Uganda; Zoonotic parasite.
Ano: 2009 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2690
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Heteroptera as vectors of plant pathogens Neotropical Entomology
Mitchell,Paula L..
The ability of piercing-sucking insects to transmit plant disease is closely linked to feeding mode and target tissue. The true bugs (Heteroptera) are generally considered to be of minimal importance as vectors of plant pathogens, although they share similar feeding behaviors with homopterans. Modes of feeding in Heteroptera include "lacerate-and-flush", intracellular penetration to vascular tissue, and an osmotic pump mechanism to acquire cell contents without penetrating the cell membrane. The relationship between heteropteran taxonomy, feeding mode, and the type of pathogens transmitted is explored through a literature survey of feeding behavior and vectoring capability. Transmission by true bugs of fungal pathogens, bacteria, viruses, phytoplasmas, and...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Insect vector; True bug; Transmission; Trypanosome; Phytoplasma.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000500001
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Immunology and immunopathology of African trypanosomiasis Anais da ABC (AABC)
Vincendeau,Philippe; Bouteille,Bernard.
Major modifications of immune system have been observed in African trypanosomiasis. These immune reactions do not lead to protection and are also involved in immunopathology disorders. The major surface component (variable surface glycoprotein,VSG) is associated with escape to immune reactions, cytokine network dysfunctions and autoantibody production. Most of our knowledge result from experimental trypanosomiasis. Innate resistance elements have been characterised. In infected mice, VSG preferentially stimulates a Th 1-cell subset. A response of <FONT FACE=Symbol>gd</FONT> and CD8 T cells to trypanosome antigens was observed in trypanotolerant cattle. An increase in CD5 B cells, responsible for most serum IgM and production of autoantibodies...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trypanosome; African trypanosomiasis; Immunology; Macrophage; Lymphocytes; Nitric oxide; Cytokine; Autoantibodies.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000400004
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