遗传 ›› 2023, Vol. 45 ›› Issue (11): 1052-1061.doi: 10.16288/j.yczz.23-167

• 研究报告 • 上一篇    下一篇

糖尿病与非糖尿病患者社区获得性高毒肺炎克雷伯菌肝脓肿临床及病原学特征比较

叶静(), 王媛, 熊璐颖, 肖永红()   

  1. 浙江大学医学院附属第一医院 传染病重症诊治全国重点实验室,杭州 310003
  • 收稿日期:2023-06-19 修回日期:2023-09-18 出版日期:2023-11-20 发布日期:2023-09-29
  • 通讯作者: 肖永红 E-mail:21918251@zju.edu.cn;xiao-yonghong@163.com
  • 作者简介:叶静,硕士,医师,研究方向:传染病学。E-mail: 21918251@zju.edu.cn
  • 基金资助:
    浙江省重点研发计划(2021C03068);国家自然科学基金(81971984);济南微生态生物医学山东实验室研究项目(JNL-2022006B)

Comparison of clinical and microbiological characteristics of community-acquired hypervirulent Klebsiella pneumoniae liver abscess in diabetic and non-diabetic patients

Jing Ye(), Yuan Wang, Luying Xiong, Yonghong Xiao()   

  1. State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
  • Received:2023-06-19 Revised:2023-09-18 Published:2023-11-20 Online:2023-09-29
  • Contact: Yonghong Xiao E-mail:21918251@zju.edu.cn;xiao-yonghong@163.com
  • Supported by:
    Key Research and Development Program of Zhejiang Province(2021C03068);National Natural Science Foundation of China(81971984);Research Project of Jinan Microecological Biomedicine Shandong Laboratory(JNL-2022006B)

摘要:

高毒力肺炎克雷伯菌(hypervirulent Klebsiella pneumoniae,HvKP)造成侵袭性感染已在全球范围内被广泛报道,其感染者主要集中在患有糖尿病(diabetes mellitus,DM)、慢性肝病等基础疾病的社区人群,且容易发生全身迁徙性感染。本研究收集了本院2013年1月~2018年12月社区获得性肺炎克雷伯菌肝脓肿患者377名,男性占65.8%,其中49.6%有DM。DM患者易发生眼部及中枢神经系统(central nervous system,CNS)感染,治疗过程中更需要持续的局部脓肿引流,其中血糖控制差的患者继发血流感染(bloodstream infections,BSI)的比率更高。共获得HvKP菌株219株,K1/K2血清型占总数81.7%,K2型患者发生BSI的比率高于K1型。PCR检测结果表明,毒力基因(rmpAareokfuallSiroNmagAugewcaG)在K1/K2型菌株的携带率明显高于non-K1/K2型,ST23和ST65是最常见的多位点序列分型(multilocus sequence typing, MLST),分别属于K1及K2血清型。另外收集35株经典肺炎克雷伯菌(classic Klebsiella pneumoniae,cKP),其血清分型主要以非K1/K2型为主。HvKP的毒力基因携带率及黏性程度明显高于cKP,前者造成的原发性肝脓肿患者易出现多组织器官感染,但对除氨苄西林以外的临床常用抗菌药物表现出更高敏感性,经过有效的治疗,患者的总体预后较好。本研究对社区获得性高毒肺炎克雷伯菌的病原学特征进行分析,并结合患者临床特征进行阐述,可对临床及科研工作起到一定参考价值。

关键词: 肝脓肿, 高毒力肺炎克雷伯菌

Abstract:

Invasive infection caused by hypervirulent Klebsiella pneumoniae (HvKP) has been reported worldwide. Most of the patients are community population, related to diabetes mellitus (DM), chronic liver disease and other basic diseases, which prone to systemic migratory infection. In this study, we collected 377 patients with community acquired Klebsiella pneumoniae liver abscess in our hospital from January 2013 to December 2018, 65.8% of whom were male, and 49.6% had DM. Patients with DM are prone to eye and central nervous system (CNS) infection, which need continuous local abscess drainage during treatment. Among them, patients with poor blood glucose control have a higher rate of blood stream infections (BSI). 219 strains of HvKP were obtained, with K1/K2 Serotype accounted for 81.7%. The incidence of BSI in K2 patients was higher than that in K1 patients. The PCR results indicate that the carrying rate of virulence genes (rmpAareokfuallSiroNmagAugewcaG) in K1/K2 type strains is significantly higher than that in non K1/K2 type strains. ST23 and ST65 are the most common multilocus sequence typing (MLST), which belong to K1 and K2 Serotype respectively. All of HvKP strains showed high sensitivity to commonly used clinical antibiotics other than ampicillin, with 54.3% of the strains exhibiting high viscosity characteristics. Meanwhile, 35 classic Klebsiella pneumoniae (cKP) strains were collected, and their serum typing is mainly non K1/K2. The carrying rate of virulence genes and viscosity degree in HvKP are significantly higher than those in cKP. Primary liver abscess caused by HvKP is prone to multiple tissue and organ infections, but it shows higher sensitivity to most commonly used antibiotics in clinical practice except for ampicillin. After effective treatment, the overall prognosis of patients is better. This study analyzes the pathogenic characteristics of HvKP and elaborates on the clinical characteristics of patients, which can provide reference for clinical and scientific research work.

Key words: liver abscess, hypervirulent Klebsiella pneumoniae