Journals / Türk Mikrobiyoloji Cemiyeti Dergisi / 2016 / Cilt: 46 - Sayı: 2

Detection of CTX-M Enzymes in ESBL (ExtendedSpectrum Beta-Lactamases) Producing Escherichia coli and Klebsiella spp Isolates

Genişlemiş Spektrumlu Beta-Laktamaz (GSBL) Üreten Escherichia coli ve Klebsiella spp. İzolatlarında CTX-M Enzimlerinin Belirlenmesi

Pages
88–96
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The most common enzyme type was CTX-M-1 group, CTX-M-15 being the most common enzyme type.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: The aim of this study is to evaluate ESBL production and CTX-M enzyme types in Escherichia coli and Klebsiella spp isolates obtained from patients admitted to our hospital.
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Key Findings & Data:Material and Method: A total of 593 isolates from various clinical specimens of patients between June 2009 and December 2009 were included in the study.
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Conclusion & Impact:The most common enzyme type was CTX-M-1 group, CTX-M-15 being the most common enzyme type.
🔬Design:Research Article
📍Scope:2009 Verileri
⚙️Variables:Domain Parameters

Abstract

Objective: The aim of this study is to evaluate ESBL production and CTX-M enzyme types in Escherichia coli and Klebsiella spp isolates obtained from patients admitted to our hospital. Material and Method: A total of 593 isolates from various clinical specimens of patients between June 2009 and December 2009 were included in the study. Antibiotic susceptibility test was performed by Kirby-Bauer disk diffusion method. ESBL production was confirmed by double-disc synergy and E tests.The minimal inhibitory concentrations of cefotaxim for the isolates with ESBL were detected by agar dilution method. Polymerase chain reaction was used to determine the CTX-M enzyme types including CTX-M group, CTX-M-1 group, CTX-M-2 group, CTX-M-8 group, CTX-M-9 group, CTX-M-25 group, CTXM-15, CTX-M-3, and CTX-M-10 types. Results: ESBL production was found in 33.7% (200/593) of the isolates (34.3% for E. coli and 31.3% for Klebsiella isolates). ESBL production was significantly high in isolates from inpatients. Resistance to ciprofloxacin, levofloxacin, amoxicillin/clavulanic acid, piperacillin/tazobactam, gentamicin, amikacin, tobramycin, trimetoprimsulphametoxazol and nitrofurantoin was significantly higher in ESBL producing isolates. CTX-M enzymes were found in 192 (96%) of the 200 ESBL producing isolates. Of the CTX-M producing isolates, CTX-M-1, CTX-M-2, CTXM-8 and CTX-M-9 groups were found in 96.8% (186/192), 5.2% (10/192), 1% (2/192) and 1.5% (3/192), respectively. CTX-M-15 was found in 165 of the 186 (88.7%) CTX-M-1 group ESBL producing isolates. Conclusions: High rates of ESBL production was found among the isolates in our hospital. The most common enzyme type was CTX-M-1 group, CTX-M-15 being the most common enzyme type.

Özet

Amaç: Bu çalışmada, hastanemize başvuran hastalardan etken olarak izole edilen Escherichia coli ve Klebsiella spp. izolatlarının, GSBL üretiminin ve CTX-M enzim tiplerinin araştırılması amaçlandı. Gereç ve Yöntem: Haziran-Aralık 2009 tarihleri arasında çeşitli klinik örneklerden toplam 593 izolat çalışmaya dâhil edildi. Antibiyotik duyarlılık testi disk difüzyon yöntemi ile yapıldı. GSBL üretimi çift disk sinerji ve E test ile doğrulandı. GSBL üreten izolatlar için sefotaksim minimal inhibitör konsantrasyonları agar dilüsyon ile belirlendi. İzolatlarda polimeraz zincir reaksiyonu yöntemiyle CTX-M enzim grupları (CTX-M grup, CTX-M-1 grubu, CTX-M-2 grubu, CTX-M-8 grubu, CTX-M-9 grubu, CTX-M-25 grubu) araştırıldı. Bulgular: İzolatların %33.7'sinin (200/593) GSBL ürettiği (E. coli %34.3, K. pneumoniae %31.3) belirlendi. Yatan hastalardan izole edilen izolatlarda GSBL üretimi anlamlı olarak yüksek bulundu. GSBL üreten izolatlar diğer izolatlara göre, siprofloksasin, levofloksasin, amoksisilin/klavulanik asit, piperasilin/tazobaktam, gentamisin, amikasin, tobramisin, trimetoprim-sülfometoksazol ve nitrofurantoine anlamlı olarak dirençli bulundu. GSBL üreten izolatların 192'sinde (%96) CTX-M enzimi belirlendi. CTX-M ürettiği saptanan izolatların %96.8'inde (186/192) CTXM-1 grubu %5.2'sinde (10/192) CTX-M-2 grubu, %1'inde (2/192) CTX-M-8 grubu ve %1.5'unda (3/192) CTX-M-9 grubu saptandı. CTX-M-1 grubu GSBL ürettiği belirlenen 186 izolatın 165'inde (%88.7) CTX-M-15 enzim tipi saptandı. Sonuç: Hastanemizden elde edilen izolatlarda GSBL oranları oldukça yüksek bulunmuş olup, en sık enzim grubu CTX-M-1 grubu ve en sık enzim tipi CTX-M-15 enzimi olarak saptanmıştır.

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Cite This Article

KÖKTÜRK, F., CÖMERT, F., ÖGEDEY, E. D., KÜLAH, C., AKTAŞ, E. (2022). Detection of CTX-M Enzymes in ESBL (ExtendedSpectrum Beta-Lactamases) Producing Escherichia coli and Klebsiella spp Isolates. Türk Mikrobiyoloji Cemiyeti Dergisi, Cilt: 46 - Sayı: 2, 88–96. https://ajindex.com/articles/635904

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References (13)

  1. Bonnet R. Growing group of extended-spectrum-β- lactamases: the CTX-M enzymes. Antimicrobial Agents Chemother 2004; 48:1-14.
  2. Cantón R, Coque TM. The CTX-M β-lactamase pandemic. Curr Opin Microbiol 2006; 9:466-75.
  3. Aktaş Z, Gönüllü N, Schneider I, Bal C, Bauernfeind A. Hastanede yatan bir hastanın idrar örneğinden izole edilen Escherichia coli suşunda CTX-M-15 tipi geniş- lemiş spektrumlu beta-laktamazın tanımlanması. Mikrobiyol Bul 2005; 39:421-9
  4. Gönüllü N, Aktaş Z, Bal Kayacan Ç, et al. Dissemination of CTX-M-15 β-lactamase genes carried on Inc FI and FII plasmids among clinical isolates of E. coli in a university hospital in İstanbul, Turkey. J Clin Microbiol 2008; 46:1110-2.
  5. Coque TM, Baquero F, Canton R. Increasing prevalence of ESBL-producing Enterobacteriaceae. In Europe. Euro Surveill 2008; 13:19044
  6. Harada, S, Ishii Y, Yamaguchi K. Extended-spectrum β-lactamases: Implications for the clinical laboratory and therapy. Korean J Lab Med 2008; 28:401-12.
  7. Murray PR. Manual of Clin Microbiol. Vol. 1, 8th ed. ASM Press, Washington, DC, 2003
  8. Jarlier V, Nicolas MH, Fournier G, Philippon A. Extended-spectrum beta-lactamases conferring transferable resistance to newer beta-lactam agents in Enterobacteriaceae: hospital prevalence and susceptibility patterns. Rev Inf Dis 1988; 10:867-78.
  9. CLSI. Methods for dilution antimicrobial susceptibility test for bacteria that grow aerobically; Approved Standard, 7th ed. Document M7-A7, Clinical and Laboratory Standards Instıtute, 2006
  10. Touati A, Benallaoua S, Forte D, Madoux J, Brasme L, de Champs C. First report of CTX-M-15 and CTXM-3 β-lactamases among clinical isolates of Enterobacteriaceae in B´ejaia, Algeria. Int J Antimicrob Agents 2006; 27:397-402.
  11. Muzaheed YD, Adams-Haduch JM, Shivannavar CT, Paterson DL, Gaddad SM. Faecal carriage of CTX-M-15-producing Klebsiella pneumoniae in patients with acute gastroenteritis. Indian J Med Res 2009; 129:599-602
  12. Woodford N, Fagan EJ, Ellington MJ. Multiplex PCR for rapid detection of genes encoding CTX-M extended-spectrum β-lactamases. J Antimicrob Chemother 2006; 57:154-5.
  13. Kim J, Lim YM, Rheem I, et al. CTX-M and SHV-12 β-lactamases a