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High Prevalence of Macrolide-resistance and Molecular Characterization of Streptococcus pyogenes Isolates Circulatingin China from 2009 to 2016

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单位: [1]Department of Laboratory Medicine, Civil Aviation General Hospital, Peking University Civil Aviation School of Clinical Medicine, Beijing, China, [2]State Key Laboratory for Infectious Disease Prevention and Control, Chinese Centre for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China, [3]Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China, [4]Laboratory of Clinical Microbiology and Infectious Diseases, Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China, [5]Department of Laboratory Medicine, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China, [6]Department of Clinical Laboratory, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China, [7]Department of Laboratory Medicine, Wuhan Pu Ai Hospital of Huazhong, University of Science and Technology, Wuhan, China, [8]Department of Laboratory Medicine, Henan Provincial People’s Hospital, Zhengzhou, China, [9]Department of Laboratory Medicine, Tai’an City Central Hospital (Tai’an), Shandong, China, [10]Department of Laboratory Medicine, First Hospital, Peking University, Beijing, China, [11]Department of Laboratory Medicine, Chengdu First People’s Hospital (Chengdu), Sichuan, China
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关键词: molecular characterization antibiotic resistance Streptococcus pyogenes

摘要:
Streptococcus pyogenes, or group A Streptococcus, is a pathogen responsible for a wide range of clinical manifestations, from mild skin and soft tissue infections and pharyngitis to severe diseases. Its epidemiological characteristics should be comprehensively under surveillance for regulating the national prevention and treatment practice. Herein, a total of 140 S. pyogenes, including 38 invasive and 102 noninvasive isolates, were collected from infected patients in 10 tertiary general hospitals from 7 cities/provinces in China during the years 2009-2016. All strains were characterized by classical and molecular techniques for its emm types/subtypes, virulent factors and antibiotic resistance profiling. Of 140 isolates, 15 distinct emm types and 31 subtypes were detected, dominated by emm12 (60 isolates, 42.9%), emm1(43, 30.7%), and emm89 (10, 7.1%), and 8 new emm variant subtypes were identified. All strains, invasive or not, harbored the superantigenic genes, speB and slo. The other virulence genes, smeZ, speF, and speC accounted for 96.4, 91.4, and 87.1% of collected isolates, respectively. Furthermultilocus sequence typing (MLST) placed all strains into 22 individual sequence types (STs), including 4 newly-identified STs (11, 7.9%). All isolates were phenotypically susceptible to penicillin, ampicillin, cefotaxime, and vancomycin, whereas 131(93.5%), 132(94.2%), and 121(86.4%) were resistant to erythromycin, clindamycin, and tetracycline, respectively. Our study highlights high genotypic diversity and high prevalence of macrolide resistance of S. pyogenes among clinical isolates circulating in China.

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出版当年[2016]版:
大类 | 2 区 生物
小类 | 2 区 微生物学
最新[2025]版:
大类 | 2 区 生物学
小类 | 3 区 微生物学
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出版当年[2015]版:
Q1 MICROBIOLOGY
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Q2 MICROBIOLOGY

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第一作者单位: [1]Department of Laboratory Medicine, Civil Aviation General Hospital, Peking University Civil Aviation School of Clinical Medicine, Beijing, China,
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通讯机构: [2]State Key Laboratory for Infectious Disease Prevention and Control, Chinese Centre for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China, [3]Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China,
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