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Registros recuperados: 9
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Characterization of an epimastigote-stage-specific hemoglobin receptor of Trypanosoma congolense OAK
Yamasaki, Shino; Suganuma, Keisuke; Yamagishi, Junya; Asada, Masahito; Yokoyama, Naoaki; Kawazu, Shin-ichiro; Inoue, Noboru.
Background: Since Trypanosorna spp. lack a complete heme synthesis pathway, the parasites are totally dependent on their host for heme throughout all of the stages of their life -cycle. We herein report the identification and characterization of a T. congolense epimastigote form (EMF)-specific hemoglobin (Hb) receptor. The gene was initially reported to encode a T. congolense haptoglobin (Hp)-Hb complex receptor (TcHpHbR) based on its similarity to a gene encoding a T brucei Hp-Hb complex receptor (TbHpHbR). Methods: Trypanosorna congolense IL3000 was used in this study. A TcHpHbR gene was PCR amplified from the parasite genome. The recombinant protein was used as an immunogen to raise antibodies for immunofluorescence assay and immunoblotting. Hemoglobin...
Palavras-chave: Trypanosome congolense; Epimastigote; Hemoglobin receptor.
Ano: 2016 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4441
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ウシ小型ピロプラズマ病血清診断用抗原の開発 OAK
河津, 信一郎; Kawazu, Shin-ichiro.
Palavras-chave: ウシ; 感染症; 原虫.
Ano: 2009 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2607
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Identification of a novel B. gibsoni 27-kDa protein as a serodiagnostic antigen OAK
Terkawi, M. A.; Aboge, G.; Jia, H.; Goo, Y-K.; Ooka, H.; Yamagishi, Junya; Nishikawa, Yoshifumi; Kawazu, Shin-ichiro; Fujisaki, K.; Xuan, Xuenan; 山岸, 潤也; 西川, 義文; 河津, 信一郎; 玄, 学南.
A novel gene encoding 27-kDa protein was identified by the screening of Babesia gibsoni cDNA library with acutely infected dog serum. The BgP27 is a single copy gene with a predicted open reading frame of 762 bp and 254 amino acids. The phylogenic analysis of the deduced amino acid of BgP27 demonstrated considerable identities with members of Plasmodium berghei circumsporozoite protein family that ranged between 18.4% and 22.8%. The BgP27 was expressed as a glutathione S-transferase fusion protein in Escherichia coli. The serum raised in mice against the recombinant protein specifically reacted with a 27-kDa protein in the extracts of B. gibsoni parasites. Confocal laser scanning microscopic observation showed high fluorescent reactivity with both...
Palavras-chave: Babesia gibsoni; Enzyme-linked immunosorbent assay; Deiagnostic performance.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2232
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Rapid and Sensitive Method for Detection of Newly Isolated Babesia Parasite (Babesia sp.1) in the Anticipated Vector-Tick Using the Polymerase Chain Reaction Technique OAK
Ohta, Masato; Kawazu, Shin-ichiro; Tsuji, Naotoshi; Terada, Yutaka; Kamio, Tsugihiko; Fujisaki, Kozo.
Palavras-chave: Babesia ovata; Polymerase chain reaction (PCR); Nested-PCR; Haemaphysalis longicoronis.
Ano: 1995 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/231
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Prevalence of gastrointestinal helminth parasites of zoonotic significance in dogs and cats in lower Northern Thailand OAK
Pumidonming, Wilawan; Salman, Doaa; Gronsang, Dulyatad; Abdelbaset, E. Abdelbaset; Sangkaeo, Khamphon; Kawazu, Shin-ichiro; Igarashi, Makoto.
Gastrointestinal zoonotic helminths of dogs and cats have a public health concern worldwide. We investigated the prevalence of gastrointestinal helminths of zoonotic significance in dogs and cats in lower Northern Thailand and utilized molecular tools for species identification of hookworms and Opisthorchis viverrini. Fecal samples of 197 dogs and 180 cats were collected. Overall prevalence of infection using microscopy was 40.1% in dogs and 33.9% in cats. Helminth infection found in both dogs and cats included hookworms, Spirometra spp., Taenia spp., Toxocara spp., 0. viverrini, Strongyloides spp. and Trichuris spp. Hookworms were the most common helminth in dogs, while Spirometra spp. were the most prevalent in cats. Among hookworm infection in dogs and...
Palavras-chave: Cat; Dog; Gastrointestinal helminth; Thailand; Zoonotic parasite.
Ano: 2016 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4452
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Development of DNA Probes for the Detection and Identification of Babesia ovata OAK
Kawazu, Shin-ichiro; Panchadcharam, Chandrawathani; Kawazu, Takeshi; Sekizaki, Tsutomu; Fujisaki, Kozo.
Palavras-chave: DNA probe diagnosis; Babesia ovata.
Ano: 1993 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/187
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Identification and functional analysis of a novel mitochondria-localized 2-Cys peroxiredoxin, BbTPx-2, from Babesia bovis OAK
Masatani, Tatsunori; Asada, Masahito; Hakimi, Hassan; Hayashi, Kei; Yamagishi, Junya; Kawazu, Shin-ichiro; Xuan, Xuenan.
Cysteine-based peroxidases, known as peroxiredoxins (Prx) or thioredoxin peroxidases (TPx), are important antioxidant enzymes that prevent oxidative damage caused by reactive oxygen species (ROS). In this study, we identified a novel mitochondrial 2-Cys Prx, BbTPx-2, from a bovine Babesia parasite, B. bovis. BbTPx-2 complementary DNA (cDNA) encodes a polypeptide of 254 amino acid residues. This protein has a mitochondrial targeting peptide at the N-terminus and two conserved cysteine residues of the typical 2-Cys Prx. By using a thiol mixed-function oxidation assay, the antioxidant activity of recombinant BbTPx-2 was revealed, and its antioxidant activity was comparable to that of a cytosolic 2-Cys Prx from B. bovis, BbTPx-1. Notably, we confirmed that...
Palavras-chave: Antioxidant activity; Babasia bovis; Mitochondria; Peroxiredoxin.
Ano: 2016 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4487
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Development of Monoclonal Antibodies That Target 1-Cys Peroxiredoxin and Differentiate Plasmodium falciparum from P. vivax and P. knowlesi OAK
Hakimi, Hassan; Nguyen, Thu-Thuy; Suganuma, Keisuke; Masuda-Suganuma, Hirono; Ma. M. Angeles, Jose; Inoue, Noboru; Kawazu, Shin-ichiro; 井上, 昇; 河津, 信一郎.
Prompt and accurate diagnosis of malarial patients is a crucial factor in controlling the morbidity and mortality of the disease. Effective treatment decisions require a correct diagnosis among mixed-species malarial patients. Differential diagnosis is particularly important in cases of Plasmodium vivax, a species that shares endemicity with P. falciparum in most endemic areas. Moreover, it is difficult to identify P. knowlesi on the basis of morphology alone, and rapid diagnostic tests are still not available for this malaria species. Therefore, the development of diagnostic tests applicable to the field is urgently needed. 1-Cys peroxiredoxin (1-Cys-Prx) in P. falciparum is abundantly expressed in the mature asexual stages, making it a promising...
Palavras-chave: Malaria diagnosis; Monoclonal antibody; Peroxiredoxin; Plasmodium knowlesi; P. vivax.
Ano: 2013 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3859
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DNA Probes for Detection of Babesia ovata or the Babesia sp.1, A Newly Isolated Bovine Babesia Parasite in Japan OAK
Ohta, Masato; Kawazu, Shin-ichiro; Tsuji, Naotoshi; Terada, Yutaka; Kamio, Tsugihiko; Fujisaki, Kozo.
Palavras-chave: Babesia ovata; DNA probe.
Ano: 1995 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/226
Registros recuperados: 9
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