Characterization of Legionella pneumophila isolated from environmental water and ashiyu foot spa

Masato Tachibana; Masaya Nakamoto; Yui Kimura; Takashi Shimizu; Masahisa Watarai

doi:10.1155/2013/514395

Characterization of Legionella pneumophila isolated from environmental water and ashiyu foot spa

Masato Tachibana, Masaya Nakamoto, Yui Kimura, Takashi Shimizu, Masahisa Watarai

Dental School

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Hot springs are the most common infectious source of Legionella pneumophila in Japan. However, little is known about the association between L. pneumophila and environmental waters other than hot springs. In this study, water samples from 22 environmental water sites were surveyed; of the 22 samples, five were L. pneumophila positive (23%). L. pneumophila was mainly isolated from ashiyu foot spas, a type of hot spring for the feet (3/8, 38%). These isolates had genetic loci or genes that encoded the virulence factors of L. pneumophila. Moreover, these isolates showed higher intracellular growth and stronger cytotoxicity compared with the reference strain. These results suggest that ashiyu foot spa can be the original source for L. pneumophila infection.

Original language	English
Article number	514395
Journal	BioMed research international
Volume	2013
DOIs	https://doi.org/10.1155/2013/514395
Publication status	Published - 2013

ASJC Scopus subject areas

Biochemistry, Genetics and Molecular Biology(all)
Immunology and Microbiology(all)

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abstract = "Hot springs are the most common infectious source of Legionella pneumophila in Japan. However, little is known about the association between L. pneumophila and environmental waters other than hot springs. In this study, water samples from 22 environmental water sites were surveyed; of the 22 samples, five were L. pneumophila positive (23%). L. pneumophila was mainly isolated from ashiyu foot spas, a type of hot spring for the feet (3/8, 38%). These isolates had genetic loci or genes that encoded the virulence factors of L. pneumophila. Moreover, these isolates showed higher intracellular growth and stronger cytotoxicity compared with the reference strain. These results suggest that ashiyu foot spa can be the original source for L. pneumophila infection.",

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AU - Tachibana, Masato

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AU - Kimura, Yui

AU - Shimizu, Takashi

AU - Watarai, Masahisa

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AB - Hot springs are the most common infectious source of Legionella pneumophila in Japan. However, little is known about the association between L. pneumophila and environmental waters other than hot springs. In this study, water samples from 22 environmental water sites were surveyed; of the 22 samples, five were L. pneumophila positive (23%). L. pneumophila was mainly isolated from ashiyu foot spas, a type of hot spring for the feet (3/8, 38%). These isolates had genetic loci or genes that encoded the virulence factors of L. pneumophila. Moreover, these isolates showed higher intracellular growth and stronger cytotoxicity compared with the reference strain. These results suggest that ashiyu foot spa can be the original source for L. pneumophila infection.

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Characterization of Legionella pneumophila isolated from environmental water and ashiyu foot spa

Abstract

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