Consulta: creatorFacets:"Zhang, Houshuang"
Registros recuperados: 4
Data/hora: 13/06/2024 06:31:54

Apical membrane antigen 1 is a cross-reactive antigen between Neospora caninum and Toxoplasma gondii, and the anti-NcAMA1 antibody inhibits host cell invasion by both parasites
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Zhang, Houshuang; Compaore, Muller K.A.; Lee, Eung-goo; Liao, Min; Zhang, Guohong; Sugimoto, Chihiro; Fujisaki, Kozo; Nishikawa, Yoshifumi; Xuan, Xuenan.
The cross-reactive antigens of Neospora caninum and Toxoplasma gondii are important in the exploration to determine the common mechanisms of parasite-host interaction. In this study, a gene encoding N. caninum apical membrane antigen 1 (NcAMA1) was identified by immunoscreening of a N. caninum tachyzoite cDNA expression library with antisera. from mice immunized with recombinant T gondii apical membrane antigen 1 (TgAMA 1). NcAMA1 was encoded by an open reading frame of 1695 bp, which encoded a protein of 564 amino acids. The single-copy NcAMA1 gene was interrupted by seven introns. NcAMA1 showed 73.6% amino acid identity to TgAMA1. Mouse polyclonal antibodies raised against the recombinant NcAMA1 (rNcAMA1) recognized a 69-kDa native parasite protein by...
Palavras-chave: Neospora caninum; Toxoplasma gondii; Apical membrane antigen 1; Cross-reactive; Invasion.
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1034

Neospora caninum: Application of apical membrane antigen 1 encapsulated in the oligomannose-coated liposomes for reduction of offspring mortality from infection in BALB/c mice
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Zhang, Houshuang; Nishikawa, Yoshifumi; Ikehara, Yuzuru; Kojima, Naoya; Yokoyama, Naoaki; Xuan, Xuenan.
Liposomes coated with neoglycolipids constructed with mannopentaose and  dipalmitoylphosphatidylethanolamine (Man3-DPPE), referred to as M3-DPPE  liposomes, have been shown to induce cellular immunity against antigens encapsulated therein. To evaluate whether these M3-DPPE liposomes have an  adjuvant capacity against Neospora caninum infection, a novel immunization  method utilizing soluble N. caninum apical membrane antigen 1 (NcAMA1)  encapsulated in the M3-DPPE liposomes (M3-NcAMA1) was employed. The  intent was to reduce offspring mortality from N. caninum infection in susceptible,  pregnant BALB/c mice. The results revealed that BALB/c mice developed IgG  antibodies specific to N. caninum. A significant amount of interferon (IFN)-γ  production was...
Palavras-chave: Neospora caninum; Apical membrane antigen 1; Oligomannose-coated liposomes.
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2821

Serodiagnosis of ovine toxoplasmosis in Mongolia by an enzyme-linked immunosorbent assay with recombinant Toxoplasma gondii matrix antigen 1
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Tumurjav, Buyannemekh; Terkawi, Mohamad Alaa; Zhang, Houshuang; Zhang, Guohong; Jia, Honglin; Goo, Youn-Kyoung; Yamagishi, Junya; Nishikawa, Yoshifumi; Igarashi, Ikuo; Sugimoto, Chihiro; Xuan, Xuenan.
Toxoplasma gondii matrix antigen 1 (TgMAG1), known as the 65-kDa protein, which is abundantly expressed in both bradyzoites and tachyzoites, was evaluated as a candidate for the development of a diagnostic reagent for ovine toxoplasmosis. The TgMAG1 gene was expressed in Escherichia coli as a fusion protein with glutathione S-transferase (GST),and the recombinant TgMAG1 (rTgMAG1) was tested in an enzyme-linked immunosorbent assay (ELISA). The ELISA with rTgMAG1 showed a highly specific reaction with sera from mice experimentally infected with T. gondii but not with the closely related Neospora caninum. The antibodies to TgMAG1 were detectable from the acute to the chronic infectious stages in a mouse model. A total of 175 serum samples collected from sheep...
Palavras-chave: ELISA; Mongolia; Sheep; TgMAG1; Toxoplasma gondii.
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3018

Identification of ribosomal phosphoprotein P0 of Neospora caninum as a potential common vaccine candidate for the control of both neosporosis and toxoplasmosis
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Zhang, Houshuang; Lee, Eung-goo; Liao, Min; Compaore, Muller K.A.; Zhang, Guohong; Kawase, Osamu; Fujisaki, Kozo; Sugimoto, Chihiro; Nishikawa, Yoshifumi; Xuan, Xuenan.
The characterization of the cross-reactive antigens of two closely related apicomplexan parasites, Neospora caninum and Toxoplasma gondii, is important to elucidate the common mechanisms of parasite–host interactions. In this context, a gene encoding N. caninum ribosomal phosphoprotein P0 (NcP0) was identified by immunoscreening of a N. caninum tachyzoite cDNA expression library with antisera from mice immunized with T. gondii tachyzoites. The NcP0 was encoded by a gene with open reading frame of 936 bp, which encoded a protein of 311 amino acids. The NcP0 gene existed as a single copy in the genome and was interrupted by a 432 bp intron. The NcP0 showed 94.5% amino acid identity to T. gondii P0 (TgP0). Anti-recombinant NcP0 (rNcP0) sera recognized a...
Palavras-chave: Neospora caninum; Toxoplasma gondii; Ribosomal phosphoprotein P0; Cross-reactive.
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1035