尿路感染症における細胞内細菌バイオフィルムのようなポッド 尿路感染症
Gregory G Anderson1, Joseph J Palermo, Joel D Schilling
1Department of Molecular Microbiology, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.
Science (New York, N.Y.)
|July 5, 2003
まとめ
細胞内Escherichia coliは膀細胞内のバイオフィルムポッドを形成し,免疫防御を回避する. これらのウロプラキンの包囲された細菌構造は,強い宿主反応にもかかわらず,持続的な尿路感染症を説明します.
科学分野:
- 微生物学 微生物学とは
- 免疫学 免疫学とは
- 泌尿器科 泌尿器科とは
背景:
- Escherichia coli (E. coli) 感染症は,中性粒子の浸透と上皮細胞の脱落を含む膀における強力な先天的な免疫反応を誘発する.
- バクテリアは,表面的な膀細胞に侵入し,細胞内感染症を確立することによって,これらの防御を回避することができます.
研究 の 目的:
- E. coliが先天的免疫を破壊し,膀の上皮細胞内に持続するメカニズムを調査する.
- 細胞内大腸菌によって形成される構造と宿主細胞との相互作用を特徴付ける.
主な方法:
- 感染した膀組織を顕微鏡で分析し,細胞内細菌構造を視覚化します.
- バクテリアマトリックスと周囲の宿主由来成分の組成と組織の特徴.
主要な成果:
- 細胞内E. coliは,膀表面細胞内のバイオフィルムのようなポッドに成熟し,膀表面に膨らみを作ります.
- これらのポッドは,ウロプラキンに富んだ殻に囲まれたポリサッカリドマトリックスに埋め込まれた細菌で構成されています.
- バイオフィルム内細菌構造は,バイオフィルムに関連した要因の地域的に異なる発現と広範なマトリックス相互作用を示す.
結論:
- 細胞内バイオフィルムのようなポッドの形成は,膀におけるE. coliの持続のための新しいメカニズムです.
- これらの構造は,保護されたニッチを提供し,細菌が宿主の免疫防御を回避し,慢性または再発性尿路感染症を引き起こすことを可能にします.
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