抗微生物药物耐药性的地理溢出源于阿齐思罗米的大规模分布
Ariktha Srivathsan1,2, Ahmed M Arzika3, Ramatou Maliki3
1Francis I Proctor Foundation, University of California San Francisco, San Francisco, USA.
Nature communications
|January 29, 2026
概括
大量服用阿齐思罗米可降低儿童死亡率,但可以增加抗菌素耐药性 (AMR). 这项研究没有发现任何证据表明阿兹胺诱导的宏类耐药性扩散到尼日尔未经治疗的村庄.
科学领域:
- 全球健康 全球健康
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 在撒哈拉以南非洲地区,大规模使用阿齐思罗米 (azithromycin) 药物 (MDA) 显著降低了儿童死亡率.
- 与阿齐思罗米一起的MDA与抗菌素耐药性 (AMR) 的增加有关,特别是宏类耐药性.
- 抗抗药性对未经治疗的人群的潜在地理溢出可能会影响试验风险评估.
研究的目的:
- 为了研究基因型宏类耐药性在阿齐思罗米辛MDA后的地理溢出效应.
- 评估在治疗区域发展的AMR是否会蔓延到邻近未经治疗的社区.
主要方法:
- 来自尼日尔儿童的直肠拭子的深层基因组测序.
- 在周边村庄两年MDA后,对30个监测村庄的300名儿童进行分析.
- 条件变异试验,以评估阿齐思罗米辛治疗强度和耐药性基因丰度之间的关联.
主要成果:
- 在未经治疗的村庄中,没有发现宏类耐药性的地理溢出证据.
- 在接受安慰剂治疗的村庄中,AMR的遗传负荷保持在基线水平,而不管周围的阿齐思罗米辛治疗强度如何.
- 敏感性分析证实,对其他类抗生素没有溢出效应.
结论:
- 亚齐思罗米辛MDA诱导的宏类耐药性似乎局部化到接受治疗的村庄.
- 关于AMR在附近未经治疗的村庄的地理溢出方面的担忧在24个月后得到缓解.
- 研究结果表明,局部AMR效应不会显著影响研究环境中的未接受治疗的人群.
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