クラミジア肺炎 (TWAR) は,頸動脈動脈硬化症において発生する
J T Grayston1, C C Kuo, A S Coulson
1Department of Epidemiology, University of Washington, Seattle 98195-7236, USA.
Circulation
|December 15, 1995
まとめ
クライミジア肺炎細菌は,エンドアテレクトミーを受けた患者の頸動脈動脈硬化組織に頻繁に検出されました. 頸動脈疾患におけるこの感染症の潜在的な役割を調査するためにさらなる研究が必要である.
科学分野:
- 心血管研究 循環器科の研究
- 感染症病理学 感染症病理学
- 微生物学 微生物学とは
背景:
- クラミジア肺炎は,大動脈と冠動脈の動脈硬化性病変で特定されています.
- 以前の血清疫学研究では,対照群と比較して,大動脈の壁の厚さが著しく高まっている個体において,C. pneumoniae抗体の有病率が高かったことが示された.
研究 の 目的:
- 頸動脈末関節切除の標本にクロミジア肺炎の存在を調査する.
- C.pneumoniaeと大動脈動脈硬化症との関連を決定するために.
主な方法:
- 免疫細胞化学 (ICC) とポリメラーゼ連鎖反応 (PCR) を用いて,新鮮に冷凍され,ホルマリンで固定された頸動脈末関節切除組織にC. pneumoniaeを検出しました.
- また,56人の患者のフォーマルリンで固定され,パラフィンで埋め込まれたアーカイブ組織も,ICCを用いて検査されました.
- 6人の患者の正常な頸動脈組織が対照群として使用されました.
主要な成果:
- 5つの新鮮冷凍およびホルミリン固定型頸動脈末関節切除の標本すべてはICCによってC. pneumoniaeが陽性であることが判明し,PCRにより3つの標本でその存在が確認されました.
- 56のアーカイブ組織をICCが分析した結果,32の標本でC.pneumoniaeが検出されました.
- 13の正常な頸動脈の組織部分の検査結果はC.pneumoniaeに陰性でした.
結論:
- クラミジア肺炎菌は,前動脈外除術を受けた患者の進行性動脈動脈硬化病変に頻繁に存在します.
- これらの発見は,大動脈動脈硬化症におけるC. pneumoniaeの潜在的な因果性または病原性役割を示唆し,さらなる調査を正当化しています.
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