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Applied and Environmental Microbiology, August 2008, p. 5086-5092, Vol. 74, No. 16
0099-2240/08/$08.00+0     doi:10.1128/AEM.00071-08
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Prevalence and Genetic Diversity of Bartonella Species Isolated from Wild Rodents in Japan{triangledown}

Kai Inoue,1 Soichi Maruyama,1* Hidenori Kabeya,1 Naoyuki Yamada,1 Norio Ohashi,2 Yukita Sato,3 Masayoshi Yukawa,3 Toshiyuki Masuzawa,4 Fumihiko Kawamori,5 Teruki Kadosaka,6 Nobuhiro Takada,7 Hiromi Fujita,8 and Hiroki Kawabata9

Laboratory of Veterinary Public Health, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan,1 Laboratory of Environmental Microbiology, Institute for Environmental Sciences, University of Shizuoka and Global COE Program, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan,2 Laboratory of Biomedical Science, Department of Veterinary Medicine College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan,3 Laboratory of Microbiology and Immunology, Faculty of Pharmaceutical Sciences, Chiba Institute of Science, Shiomi 3, Choshi, Chiba 288-0025, Japan,4 Shizuoka Institute of Environment and Hygiene, 4-27-2, Kita-ando, Shizuoka 420-8637, Japan,5 Department of Parasitology, Aichi Medical University, Aichi 480-1195, Japan,6 Department of Pathological Sciences, Faculty of Medical Sciences, University of Fukui, Fukui 910-1193, Japan,7 Ohara Research Laboratory, Ohara General Hospital, Fukushima 960-0195, Japan,8 Department of Bacteriology, National Institute of Infectious Diseases, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8640, Japan9

Received 10 January 2008/ Accepted 8 June 2008

Here, we describe for the first time the prevalence and genetic properties of Bartonella organisms in wild rodents in Japan. We captured 685 wild rodents throughout Japan (in 12 prefectures) and successfully isolated Bartonella organisms from 176 of the 685 rodents (isolation rate, 25.7%). Those Bartonella isolates were all obtained from the rodents captured in suburban areas (rate, 51.8%), but no organism was isolated from the animals captured in city areas. Sequence analysis of rpoB and gltA revealed that the Bartonella isolates obtained were classified into eight genetic groups, comprising isolates closely related to B. grahamii (A-I group), B. tribocorum and B. elizabethae (B-J group), B. tribocorum and B. rattimassiliensis (C-K group), B. rattimassiliensis (D-L group), B. phoceensis (F-N group), B. taylorii (G-O group), and probably two additional novel Bartonella species groups (E-M and H-P). B. grahamii, which is one of the potential causative agents of human neuroretinitis, was found to be predominant in Japanese rodents. In terms of the relationships between these Bartonella genetic groups and their rodent species, (i) the A-I, E-M, and H-P groups appear to be associated with Apodemus speciosus and Apodemus argenteus; (ii) the C-K, D-L, and F-N groups are likely implicated in Rattus rattus; (iii) the B-J group seems to be involved in Apodemus mice and R. rattus; and (iv) the G-O group is probably associated with A. speciosus and Clethrionomys voles. Furthermore, dual infections with two different genetic groups of bartonellae were found in A. speciosus and R. rattus. These findings suggest that the rodent in Japan might serve as a reservoir of zoonotic Bartonella infection.

* Corresponding author. Mailing address: Laboratory of Veterinary Public Health, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan. Phone and fax: 81-466-84-3386. E-mail: maruyama.soichi{at}nihon-u.ac.jp

{triangledown} Published ahead of print on 7 July 2008.

Applied and Environmental Microbiology, August 2008, p. 5086-5092, Vol. 74, No. 16
0099-2240/08/$08.00+0     doi:10.1128/AEM.00071-08
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Bai, Y., Kosoy, M. Y., Lerdthusnee, K., Peruski, L. F., Richardson, J. H. (2009). Prevalence and Genetic Heterogeneity of Bartonella Strains Cultured from Rodents from 17 Provinces in Thailand. Am J Trop Med Hyg 81: 811-816 [Abstract] [Full Text]  


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