抗生物質の使用年齢以降の臨床単離におけるゲノム抵抗の頻度および移動性の増加
Arya Kaul1, Célia Souque1, Mische Holland1,2
1Departments of Biomedical Informatics and Microbiology and Laboratory of Systems Pharmacology, Harvard Medical School, Boston, MA, 02115, USA.
Microbial genomics
|September 1, 2025
まとめ
抗生物質耐性遺伝子は 抗生物質の使用前に存在し 歴史的な細菌のコレクションで見つかりました 抗生物質の導入後に発生頻度と移動性が著しく増加しました
科学分野:
- 微生物学
- ゲノミクス
- 進化生物学
背景:
- 抗生物質の耐性は,臨床的な抗生物質の導入後に急速に出現します.
- 過去のデータがないため,導入前の耐性を決定することは困難です.
- 過去の耐性遺伝子の流行に関する洞察を 提供しています
研究 の 目的:
- 抗生物質の時代前と後の抗生物質耐性遺伝子の歴史的流行と特徴を調査する.
- 耐性遺伝子の進化を理解するために,歴史的分離からのゲノムデータを分析する.
- 抗生物質の使用が抵抗性遺伝子の頻度と移動性に与える影響を評価する.
主な方法:
- 英国国立型培養コレクション (NCTC) の高品質の細菌ゲノム1817の配列化.
- ゲノムを隔離年に合わせる (1885年まで遡る)
- 抗生物質耐性遺伝子や移動性遺伝子要素を特定し,定量化するためのバイオ情報分析
主要な成果:
- 抗生物質耐性遺伝子は 抗生物質の時代以前に 病原体や環境サンプルで検出されました
- 抗生物質の導入後に抵抗性遺伝子の頻度の顕著な増加が観察されました.
- レジスタンス要素は,時間とともに複数の移動要素に移動し,統合する傾向を示した.
結論:
- 大規模な抗生物質使用の前に臨床的に重要な細菌で循環した機能的な抗生物質耐性遺伝子.
- 抗生物質の使用は,耐性遺伝子の発生率と移動性の増加と関連しています.
- 抗生物質耐性の長期的進化を理解するために 歴史的なゲノムデータは極めて重要です
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