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首页> 外文期刊>Biocontrol Science >Abundance of Vibrio parahaemolyticus having tdh and/or trh genes in an area of Seto-Inland Sea, Japan
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Abundance of Vibrio parahaemolyticus having tdh and/or trh genes in an area of Seto-Inland Sea, Japan

机译：日本濑户内海地区具有tdh和/或trh基因的副溶血性弧菌丰富

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摘要

Vibrio parahaemolyticus is an important etiological agent of gastroenteritis associated with seafood consumption in Japan and many parts of the world. Thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH), encoded by the tdh and trh genes respectively, are the most recognized pathogenic factors of this bacterium. During this study a high percentage of V. parahaemolyticus isolated from an area was found to be positive for the tdh and/or trh genes by PCR, although almost all of the isolates lacked the ability to produce active hemolysin. Such tdh and/or trh positive strains were isolated from a specific coastal area, but not isolated from four other areas of the Seto-Inland Sea. This particular area, Kojima Bay, receives freshwater from several adjacent rivers, and such influx of water may have special effects on the growth V. parahaernolyticus, as evidenced by the high density of this bacterium in water samples (2300 to 4600 per 100 ml). V. parahaemolyticus of various sero-groups were isolated from each area; however, Kojima Bay samples were dominated by O1, O3, and O4 sero-groups.
机译：副溶血性弧菌是胃肠炎的重要病原体，与日本和世界许多地方的海鲜消费有关。分别由tdh和trh基因编码的热稳定直接溶血素（TDH）和TDH相关溶血素（TRH）是该细菌最公认的致病因素。在这项研究中，通过PCR发现，从某个区域分离出的高比例副溶血弧菌对tdh和/或trh基因呈阳性，尽管几乎所有分离株都缺乏产生活性溶血素的能力。此类tdh和/或trh阳性菌株是从特定的沿海地区分离出来的，而不是从濑户内海的其他四个地区分离出来的。这个特定的区域，小岛湾，从数条相邻的河流中接收淡水，这种水的涌入可能对副溶血弧菌的生长产生特殊的影响，这一细菌在水样中的密度很高（每100毫升2300至4600毫升）证明了这一点。 。从每个区域分离出不同血清群的副溶血性弧菌。但是，小岛湾的样本以O1，O3和O4血清群为主。

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