Identification of a New Type of
            <i>Babesia</i>
            Species in Wild Rats (
            <i>Bandicota indica</i>
            ) in Chiang Mai Province, Thailand

Dantrakool, Anchalee; Somboon, Pradya; Hashimoto, Takeji; Saito-Ito, Atsuko

doi:10.1128/jcm.42.2.850-854.2004

Cited by 25 publications

(15 citation statements)

References 25 publications

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“…The primers of Anl, Bnl, CF1 and CR1 were used previously to determine the SSUrDNA sequence of Babesia sp. (5). The primers of CF2 (5'-TCAGAGGTGAAATTCTTAGATTTGT-3'), CR2 (5'-TCTGATCGTCTTCGATCCCCTA-3') and CR3 (5'-CGTCCTTCATCGTTGTGTGAGC-3') were based on genus Babesia-conserving sequences in the middle of SSUrDNA and 5.8S rDNA, respectively.…”

Section: Methodsmentioning

confidence: 99%

Survey of Babesia microti Infection in Field Rodents in Japan: Records of the Kobe‐Type in New Foci and Findings of a New Type Related to the Otsu‐Type

Saito-Ito

Kasahara

Kasai

et al. 2007

Microbiology and Immunology

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Of 247 rodents comprising 5 genera and 7 species collected at 17 sites throughout Japan from 2003 to 2005, Babesia microti was detected microscopically and by polymerase chain reaction (PCR) in 36 rodents comprising 2 genera and 3 species from 12 sites. Based on the analysis of small subunit ribosomal RNA gene (SSUrDNA) sequences, the Kobe‐type, the etiological type of the first Japanese case of human infection was found in Apodemus speciosus and Apodemus argenteus in Aomori, the northernmost prefecture of the Japanese mainland, while the U.S.‐type was found on Hokkaido Island and the Otsu‐type was widely distributed. In addition, a new Otsu‐related type was detected exclusively in Eothenomys andersoni in Nagano, a prefecture in central Japan. The sequences of internal transcribed spacer 1 to 2 (ITS1/2) of the present Kobe‐ and Otsu‐types were almost identical to those of the same types previously identified. The ITS1/2 sequence of the U.S.‐type identified in Hokkaido in this survey was somewhat different from that of the U.S.‐type strain originating from the U.S.A., with approximately 95% identity. This value was similar to the 94% identity found between the ITS1/2 sequences of the Otsu‐type and the new Otsu‐related type. The new Otsu‐related type of B. microti was isolated as the Nagano strain, which was serologically differentiated from the other type strains of B. microti. The divergence and distribution of genotypes are important factors in investigating the epidemiology of human B. microti infection in Japan.

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Section: Methodsmentioning

confidence: 99%

Survey of Babesia microti Infection in Field Rodents in Japan: Records of the Kobe‐Type in New Foci and Findings of a New Type Related to the Otsu‐Type

Saito-Ito

Kasahara

Kasai

et al. 2007

Microbiology and Immunology

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“…In Slovakia (Duh et al 2003), prevalence among yellow-necked mice (A. flavicollis) was 12% and prevalence among bank voles (M. glareolus) 16%. Recently, in Thailand a new type of rodent babesia (Dantrakool et al 2004) that seems to be phylogenetically closest to the canine B. canis, was found in bandicoot rats (Bandicota indica). Whether this species can also infect humans, as is the case with B. microti is not known yet.…”

Section: Babesiosismentioning

confidence: 99%

Rodent-borne diseases and their risks for public health

Meerburg¹,

Singleton²,

Kijlstra³

2009

Critical Reviews in Microbiology

810

722

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Rodents are the most abundant and diversified order of living mammals in the world. Already since the Middle Ages we know that they can contribute to human disease, as black rats were associated with distribution of plague. However, also in modern times rodents form a threat for public health. In this review article a large number of pathogens that are directly or indirectly transmitted by rodents are described. Moreover, a simplified rodent disease model is discussed.

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“…Phylogenetic trees inferred by comparison of a wide range of full‐length and truncated 18 S Apicomplexan sequences clearly indicate that many organisms currently classified as Babesia are in fact only remotely related to the genus Babesia ( sensu stricto ) 17, 26 . Many of the organisms have been characterized from field isolates only, on the basis of 18 S sequences, and in many cases the vectors are unknown.…”

Section: Genotypic Diversity At the Genus And Species Levelmentioning

confidence: 99%

Molecular Sequence Evidence for the Reclassification of Some Babesia Species

Allsopp

2006

Annals of the New York Academy of Sciences

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Taxonomic characterization of organisms in the genera Theileria and Babesia was originally based on observations of morphology and certain general phenotypic characteristics, which enabled many parasites to be unequivocally assigned to a particular genus. However, application of molecular genetic techniques, such as the polymerase chain reaction (PCR) for gene amplification, and DNA sequencing, have revealed gross inconsistencies in the assignation of some parasite genetic variants, particularly those of the B. gibsoni and B. microti complexes, to the genus Babesia. These variants cannot be assigned, on the basis of sequence information and phylogenetic analysis, to either of the genera Theileria and Babesia. The gene for which most sequence information is available for phylogenetic analysis is the small subunit ribosomal RNA (srRNA) gene. This gene allows clear distinction of the genera Theileria and Babesia (sensu stricto) and reveals that many "Babesia" variants are phylogenetically distinct from both genera. This distinction is confirmed, for some of the variants, by beta-tubulin sequence data, suggesting that the organisms should be renamed and reclassified.

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Identification of a New Type of Babesia Species in Wild Rats ( Bandicota indica ) in Chiang Mai Province, Thailand

Cited by 25 publications

References 25 publications

Survey of Babesia microti Infection in Field Rodents in Japan: Records of the Kobe‐Type in New Foci and Findings of a New Type Related to the Otsu‐Type

Survey of Babesia microti Infection in Field Rodents in Japan: Records of the Kobe‐Type in New Foci and Findings of a New Type Related to the Otsu‐Type

Rodent-borne diseases and their risks for public health

Molecular Sequence Evidence for the Reclassification of Some Babesia Species

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