Consulta: creatorFacets:"Okamura, Masashi"
Registros recuperados: 6
Data/hora: 11/06/2024 06:43:50

Adjuvant Effect of Oligomannose-Coated Liposome-Based Platform for veccine against African Trypanosomosis
Provedor de dados: 19
Autores: Kuboki, Noritaka; Yokoyama, Naoaki; Namangala, B; Okamura, Masashi; Inoue, Noboru; Takagi, Hideaki; Nakayama, Tomoko; Nishikawa, Yoshifumi; Ikehara, Yuzuru; Kojima, Naoya; 横山, 直明; 井上, 昇; 西川, 義文.
Palavras-chave: Adjuvant; African trypanosome; Immunization; Oligomannose-coated liposome(OML).
Ano: 2008
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2222

IN VITRO GROWTH INHIBITORY EFFECTS OF COMBINED APPLICATIONS OF CLOTRIMAZOLE, KETOCONAZOLE, AND CLODINAFOP-PROPARGYL ON EQUINE BABESIA PARASITES
Provedor de dados: 19
Autores: Bork, Sabine; Yokoyama, Naoaki; Okamura, Masashi; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
Recently，we reported the in vitro growth inhibitory effects of the imidazole derivatives，clotrimazole(CLT) and ketoconazole (KC)，and the herbicide，clodinafop-propargyl(CP)，against bovine and equine Babesia parasites. Additionally，in the bovine species，several combined applications of the CLT，KC，and CP were reported to significantly increase the inhibitory effects. In this study，similar combination tests were carried out in order to confirm possible synergistic effects in the equine species，Babesia caballi and Babesia equi. Combinations of CLT/KC， CLT/CP，and CLT/KC/CP exerted a significantly enhanced growth inhibitory efficacy in B. caballi，in contrast to B. equi，where no synergistic effects were observed in any of the combinations. Our results suggest that...
Palavras-chave: In vitro; Babesia; Clotrimazole; Ketoconazole; Clodinafop-propargyl.
Ano: 2003
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/637

Prime-boost immunization with DNA followed by a recombinant vaccinia virus expressing P50 induced protective immunity against Babesia gibsoni infection in dogs.
Provedor de dados: 19
Autores: Fukumoto, Shinya; Tamaki, Yoh; Okamura, Masashi; Bannai, Hiroshi; Yokoyama, Natsuko; Suzuki, Tomoko; Igarashi, Ikuo; Suzuki, Hiroshi; Xuan, Xuenan.
A heterologous prime-boost immunization regime with priming DNA followed by recombinant vaccinia virus expressing relevant antigens has been shown to induce effective immune responses against several infectious pathogens. In this study, we constructed a recombinant plasmid and vaccinia virus, both of which expressed P50 of Babesia gibsoni, to investigate the immunogenicity and protective efficacy of a heterologous prime-boost immunization against canine babesiosis. The dogs immunized with the prime-boost regime developed a significantly high level of specific antibody against P50 when compared with the control groups, and the antibody level was strongly increased after a booster immunization with a recombinant vaccinia virus. The prime-boost immunization...
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/812

FUCOIDAN INHIBITS THE IN VITRO GROWTH OF BABESIA BOVIS
Provedor de dados: 19
Autores: Takabatake, Noriyuki; Hashiba, Shintaro; Bork, Sabine; Okamura, Masashi; Yokoyama, Naoaki; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
Palavras-chave: Babesia bovis; Fucoidan.
Ano: 2004
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/646

Protective immunity of blood plasma fraction containing Babesia rodhaini exoantigens in mice
Provedor de dados: 19
Autores: Kamiya, Shiho; Takabatake, Noriyuki; Fujii, Kei; Okamura, Masashi; Iseki, Hiroshi; Yokoyama, Naoaki; Igarashi, Ikuo.
Babesia spp. are major hemoprotozoan parasites in animals. Exoantigens, which are soluble antigens released by the parasites during their asexual development, have been successfully applied for the development of a vaccine against babesiosis. In this study, we examined the ability of exoantigens to induce protective immunity in mice against a rodent Babesia parasite, Babesia rodhaini. The BALB/c mice immunized with the blood plasma fraction of B. rodhaini-infected mice (B. rodhaini exoantigens) showed a significant decrease in the lethal rate when challenged with B. rodhaini. Western blot analysis with anti-B. rodhaini exoantigen immune serum specifically detected at least eleven proteins in the lysate of B. rodhaini-infected erythrocytes. Next, a cDNA...
Palavras-chave: Babesiosis; Babesia rodhaini; Exoantigen; Protective effect; Mice.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/149

Babesia bovis: Subcellular localization of host erythrocyte membrane components during their asexual growth
Provedor de dados: 19
Autores: Okamura, Masashi; Yokoyama, Naoaki; Takabatake, Noriyuki; Okubo, Kazuhiro; Ikehara, Yuzuru; Igarashi, Ikuo; 横山, 直明; 五十嵐, 郁男.
In the present study, the subcellular localization of the host red blood cell (RBC) membrane components, the alpha 2-3-linked sialic acid (SA) residues and the lipid bilayer, was observed during the asexual growth of Babesia bovis using two erythrocyte probes, the SA-specific lectin (MALII) and the lipophilic fluorescent (PKH2) probes, respectively. In confocal laser scanning microscopy with MALII, the SA residues on the surface of parasitized RBCs appeared to accumulate into the intracellular parasites as the parasites matured as well as to remain on the surface of extracellular parasites. Furthermore, when PKH2-labeled RBCs were infected with B. bovis, PKH2 signals were also observed around both the intracellular and the extracellular parasites,...
Palavras-chave: Babesia bovis (B. bouis); SA; MALII; RBC; RT; PBS; Babesia equi (B. equi); PV.
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1040