碳青霉烯类耐药高毒力肺炎克雷伯菌耐药机制及进化研究进展

Research progress on resistance mechanism and evolution of carbapenem-resistant hypervirulent Klebsiella pneumoniae

  • 摘要: 肺炎克雷伯菌作为临床常见的机会致病菌,在我国临床分离病原菌中检出率位居第二。碳青霉烯类抗菌药物在临床上的广泛应用导致碳青霉烯类耐药肺炎克雷伯菌(CRKP)在全球范围内呈现高检出率,其耐药机制复杂且进化变迁多样,导致由其引发的感染防治难度大、病死率高,给临床抗感染治疗带来巨大挑战。近年来,碳青霉烯类耐药高毒力肺炎克雷伯菌(CR-hvKP)的出现与全球传播更成为公共卫生安全的重要威胁,具有碳青霉烯类抗菌药物耐药基因的高毒力肺炎克雷伯菌分离株正在全球蔓延,即使在免疫系统健康的人中也能快速引起致命感染。本文系统综述了CR-hvKP的耐药机制、进化途径、适应性变迁及临床防治策略的最新研究进展,旨在深化对该“超级细菌”的认识,为临床防控提供理论依据。

     

    Abstract: Klebsiella pneumoniae, as a clinically prevalent opportunistic pathogen, ranks as the second most commonly detected pathogen in clinical isolates in China.The extensive clinical use of carbapenem antibiotics has led to a high global detection rate of carbapenem-resistant K. pneumoniae (CRKP). Characterized by complex resistance mechanisms and diverse evolutionary pathways, CRKP infections pose significant challenges in prevention and treatment, with high associated mortality rates, creating substantial obstacles for clinical anti-infective therapy.In recent years, the emergence and global spread of carbapenem-resistant hypervirulent K.pneumoniae (CR-hvKP) have escalated into a major public health threat.Notably, hypervirulent K.pneumoniae isolates carrying carbapenem resistance genes are rapidly disseminating worldwide, causing fatal infections even in immunocompetent individuals.This article systematically reviews the latest research advances on the resistance mechanisms, evolutionary pathways, adaptive changes, and clinical management strategies of CR-hvKP, aiming to deepen understanding of this "superbug" and provide a theoretical foundation for clinical prevention and control.

     

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