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在Haemophilus influenzae中重新检测出对安皮西林和塞福胺的突变性耐药性

Margo Diricks^1,2, Sabine Petersen³, Lennart Bartels⁴

¹Molecular and Experimental Mycobacteriology, Research Center Borstel, Borstel, Germany.

Genome medicine

|December 5, 2024

概括

在Haemophilus influenzae的基因型耐药性,特别是PBP3突变,对于在表型检测不清楚时预测安培素耐药性至关重要. 优先考虑基因型数据有助于准确的治疗决策.

科学领域:

微生物学微生物学
遗传学是一个遗传学.
传染性疾病传染性疾病

背景情况:

海莫菲勒斯流感会导致严重的呼吸道和侵入性感染.
抗西林耐药菌株的出现挑战了治疗.
不清楚的基因型-表型耐药性相关性使患者管理复杂化.

研究的目的:

在H. influenzae.中重新审视分子耐药机制.
确定新的抗性决定因素.
澄清基因型-表型耐药性相关性.

主要方法:

对H. influenzae分离物的系统元分析 (n=291).
量化表型耐药性与PBP3替代模式 (ftsI) 的相关性.
全球 (n=555) 和欧洲 (n=298) 临床队列上的基因组学和GWAS.

主要成果:

PBP3 II 和 III 组与安培素耐药性相关;III 组与塞福胺耐药性相关.
现型测试显示,PBP3 II组的安培素耐药性特异性较低.
GWAS发现了与耐药性相关的PBP3替代物 (M377I,A502V,N526K,V547I,N569S) 和其他基因 (oppA,ridA,ompP2).

结论:

表型分析不一致地对与PBP3相关的耐药性进行分类.
优先考虑基因型PBP3数据而不是表型结果,当MIC接近断点时,对安培素耐药性进行检测.
需要进一步研究新型耐药性模式对治疗结果和健康影响.

关键词:

这种病毒是Haemophilus influenzae.艾普西林耐药性艾普西林耐药性这是一个BLNAR BLNAR.塞福塔克西姆的耐药性全基因组关联研究研究.哈普洛型网络是指一个哈普洛型网络.文献综述文献综述文献综述在MIC中,MIC是MIC,MIC是MIC.PBP3 PBP3 在线阅读人类基因组学是什么?抵抗组织的抵抗组织.

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