在高负荷环境中,对与抗利芬素和异化结核病相关的突变进行了全面分析
Rosângela Siqueira de Oliveira1, Angela Pires Brandão1,2, Fabiane Maria de Almeida Ferreira1
1Instituto Adolfo Lutz, São Paulo, SP, Brasil.
Revista da Sociedade Brasileira de Medicina Tropical
|September 24, 2025
概括
在巴西,耐药结核病 (TB) 突变在4.9%的Mycobacterium结核病复合体分离物中被发现. 分子测试检测到边界突变,强调需要综合监测,以有效管理耐药结核病.
科学领域:
- 微生物学 微生物学
- 遗传学 遗传学 是一个
- 公共卫生 公共卫生
背景情况:
- 结核菌复合体 (MTBC) 的耐药性构成了全球健康的重大威胁.
- 了解耐药机制对于有效的治疗和控制策略至关重要.
研究的目的:
- 来自巴西圣保罗的MTBC分离物中与一线药物耐药性相关的突变的特征.
- 评估分子测试在检测耐药性突变中的性能.
主要方法:
- 使用基因型MTBDRplus测定 (LPA) 来检测MTBC分离物的rpoB,katG和inhA基因中的突变.
- 测序了LPA推断的所有突变,以确认和识别新突变.
- 进行了表型药物敏感性测试,以评估标准临界度的有效性.
主要成果:
- 患病率为1.5%的耐利芬辛 (RIF-R) 结核病,2.0%的耐异酸 (INH-R) 结核病,和1.2%的多药耐药 (MDR) 结核病.
- 主要突变包括RIF-R的rpoB H445N,INH-R的 inhA促进物C-15T,以及MDR-TB的rpoB S450L + katG S315T1.
- 现型测试显示,标准的利芬素度未能检测到大多数边界rpoB突变.
结论:
- 在高负担环境中,对耐药结核病的持续监测至关重要.
- 整合分子和表型方法对于准确检测和治疗耐药结核病至关重要.
- 该研究发现了新的突变,强调了更新分子诊断指南的必要性.
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