ムカデの顎肢表面および内部の細菌叢:同定と特徴づけ
Yasutaka Tanaka1, Daiki Mizushima2, Yoshimitsu Izawa1
1Department of Emergency and Critical Care Medicine, Jichi Medical University, Tochigi, Japan.
PloS one
|January 16, 2026
まとめ
ムカデの顎肢には多様な細菌が生息しており、黄色ブドウ球菌はその一部として同定された。ムカデに咬まれた後の二次感染を防ぐためには、徹底した創傷洗浄が不可欠である。
科学分野:
- 微生物学
- 毒性学
- 感染症学
背景:
- 熱帯・亜熱帯地域におけるムカデの咬傷は、不快感や壊死性軟部組織感染症(NSTI)を含む感染症を引き起こす可能性がある。
- 毒液注入器官であるムカデの顎肢に生息する細菌に関する情報は限られている。
研究 の 目的:
- ムカデの顎肢に存在する細菌種を同定すること。
- これらの細菌が咬傷後の感染症において果たす可能性のある役割を評価すること。
主な方法:
- 16SリボソームRNA遺伝子配列解析を用いた、オオムカデ(Scolopendra mutilans)、ヤケヤスデ(Scolopendra japonica)、およびBothropolys rugosusの顎肢の細菌群集の解析。
- 日本で収集されたムカデ標本のマイクロバイオーム解析。
主要な成果:
- ムカデの顎肢からは多様な細菌群集が検出された。
- NSTI(壊死性軟部組織感染症)に関連する属である黄色ブドウ球菌が、少数派の細菌集団として検出された。
結論:
- 本研究は、ムカデの顎肢上の細菌について初めて報告するものであり、一部は過去にムカデ咬傷感染症から分離されたものである。
- これらの細菌による感染リスクは低いと思われるが、二次感染を防ぐためには徹底した創傷洗浄が不可欠である。
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