Borrelia sinica sp. nov., a Lyme disease-related Borrelia species isolated in China
T Masuzawa, N Takada, M Kudeken, T Fukui, Y Yano, F Ishiguro, Y Kawamura, Y Imai and T Ezaki Department of Microbiology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, 422-8526, Japan A survey was performed for Lyme disease borrelia in the southern part of China, in Zhejiang, S...
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Veröffentlicht in: | International journal of systematic and evolutionary microbiology 2001-09, Vol.51 (5), p.1817-1824 |
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Zusammenfassung: | T Masuzawa, N Takada, M Kudeken, T Fukui, Y Yano, F Ishiguro, Y Kawamura, Y Imai and T Ezaki
Department of Microbiology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, 422-8526, Japan
A survey was performed for Lyme disease borrelia in the southern part of
China, in Zhejiang, Sichuan and Anhui provinces, along the Yangtze River
valley, in May of 1997 and 1998. Twenty isolates from Ixodes granulatus,
Ixodes ovatus, Apodemus agrarius and Niviventer confucianus were obtained.
These isolates were characterized by RFLP of the 5S--23S rDNA intergenic
spacer, sequence analysis of the intergenic spacer, 16S rDNA and flagellin
gene, DNA--DNA hybridization analysis, SDS-PAGE and Western blotting with
mAbs. Six isolates from A. agrarius, five from I. granulatus collected in
Zhejiang province and one from N. confucianus in Sichuan province were
highly similar to strains 10MT and 5MT isolated in Korea and classified as
Borrelia valaisiana. Four isolates from A. agrarius and I. granulatus
collected in Zhejiang province generated unique RFLP patterns and
phylogenetic analysis of the 16S rDNA and flagellin gene sequences
suggested that the isolates should be classified as B. valaisiana.
Furthermore, three isolates (CMN1a, CNM2, CMN3(T)) from N. confucianus
captured in Sichuan province and one (CWO1) from I. ovatus in Anhui
province showed lower 16S rDNA sequence similarity (less than 99.0%) to
sequences of previously described Lyme disease-related Borrelia species.
DNA--DNA hybridization results revealed that strains CMN3(T) and CMN1a were
clearly distinct from all other known Lyme disease Borrelia species.
Electron microscope observation showed the spirochaetes to be
morphologically similar to those of Borrelia, but the cells contained only
four periplasmic flagella inserted at each end of the spirochaetes. Based
on these results, a new Borrelia species, Borrelia sinica sp. nov., is
proposed. Strain CMN3(T) is the type strain of this new species. |
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ISSN: | 1466-5026 1466-5034 |
DOI: | 10.1099/00207713-51-5-1817 |