Consulta: subjectFacets:"B. microti"
Registros recuperados: 3
Data/hora: 03/06/2024 02:28:13

Inhibitory effect of apicidin on in vitro and in vivo growth of Babesia parasites
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Munkhjargal, T; Aboulaila, M.R.A; Sivakumar, T; Yokoyama, N; Igarashi, I; 横山, 直明; 五十嵐, 郁男.
Apicidin, a histone deacetylase inhibitor, has a broad spectrum of anti-protozoal activities against apicomplexan parasites. In the present study, we evaluated the inhibitory effect of apicidin on the asexual growth of bovine Babesia parasites (B. bovis and B. bigemina) in vitro, as well as on the in vivo growth of B. microti in mice. The growth of B. bovis and B. bigemina was significantly inhibited in the presence of 3 ng/ml apicidin. Complete inhibition of B. bovis and B. bigemina growth was achieved on the fourth and third days, respectively, after treatment with 729 ng/ml apicidin. These parasites failed to grow again even when drug-free medium was substituted. The 50% inhibitory concentrations of apicidin against B. bovis and B. bigemina were...
Palavras-chave: Apicidin; B .bovis; B .bigemina; B. microti; Asexual growth.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2386

The PCR detection and phylogenetic characterization of Babesia microti in questing ticks in Mongolia
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Tuvshintulga, Bumduuren; Sivakumar, Thillaiampalam; Battsetseg, Badgar; Narantsatsaral, Sandag-ochir; Enkhtaivan, Batsaikhan; Battur, Banzragch; Hayashida, Kyoko; Okubo, Kazuhiro; Ishizaki, Takahiro; Inoue, Noboru; Igarashi, Ikuo; Yokoyama, Naoaki.
Babesia microti is a tick-transmitted zoonotic hemoprotozoan parasite. In the present study, we investigated B. microti infection in questing ticks in Mongolia. A total of 219 questing ticks were collected from three different Mongolian provinces (Bayan-Olgii, Khovsgol, and Selenge). Of these, 63 from Selenge were identified as Ixodes persulcatus, while the remaining 156 (from all three provinces) were identified as Dermacentor nuttalli. When the tick DNA samples were screened using a B. microti-specific nested PCR, 19 (30.2%) of the 63 I. persulcatus ticks were found to be B. microti-positive. The parasite was not detected in D. nuttalli. Subsequently, the 18S rRNA, cox1, and tufA sequences of B. microti were amplified, sequenced, and subjected to...
Palavras-chave: 18S rRNA; B. microti; Cox1; Mongolia; Ticks; TufA.
Ano: 2015
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4554

Babesia gibsoni ribosomal phosphoprotein P0 induces cross-protective immunity against B-microti infection in mice
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: Terkawi, M. Alaa; Jia, Honglin; Zhou, Jinlin; Lee, Eung-goo; Igarashi, Ikuo; Fujisaki, Kozo; Nishikawa, Yoshifumi; Xuan, Xuenan.
Babesia gibsoni ribosomal phosphoprotein PO (BgP0) was identified as an immunodominant cross-reactive antigen with B. microti. The BgPO gene is a single copy with a predicted open reading frame of 942 bp and 314 amino acids. The BgP0 was expressed as a glutathione S-transferase fusion protein in Escherichia coli. The serum raised in mice with the recombinant BgPO showed a specific band with a 34-kDa molecular mass in the extracts of B. gibsoni and B. microti merozoites. Furthermore, the intraperitoneal (i.p.) immunization of rBgP0 and Freund's adjuvant induced strong Immoral response consisting of mixed immunoglobulins IgG1 and IgG2a in BALB/c mice. Following the challenge with B. microti, these mice delayed the onset of parasites and significantly reduced...
Palavras-chave: B. gibsoni; B. microti; Ribosomal phosphoprotein P0; Cross-reactive antigen.
Ano: 2007
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1036