Journals / Türk Mikrobiyoloji Cemiyeti Dergisi / 2021 / Cilt: 51 - Sayı: 1

Spread of Carbapenemase Producing Klebsiella pneumoniae Isolates in Our Hospital: Investigation of Molecular Typing and Clonal Relationship

Karbapenemaz Üreten Klebsiella pneumoniae İzolatlarının Hastanemizde Yayılımı: Moleküler Tiplendirme ve Klonal İlişkinin Araştırılması§

Pages
33–41
Publication Date
2022-11-06
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

Therefore, the spread of the isolates in hospitals can be limited by detecting colonization with active surveillance programs and by applying contact isolation and effective infection control measures.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: Carbapenem resistance has been reported with increasing frequency among members of Enterobacterales, especially in the last 10 years.
📊
Key Findings & Data:Method: A total of 32 carbapenem-resistant K. pneumoniae isolates of the samples sent to microbiology laboratory between July and September 2014, were included in the study.
💡
Conclusion & Impact:Therefore, the spread of the isolates in hospitals can be limited by detecting colonization with active surveillance programs and by applying contact isolation and effective infection control measures.
🔬Design:Research Article
📍Scope:2014 Verileri
⚙️Variables:Domain Parameters

Abstract

Objective: Carbapenem resistance has been reported with increasing frequency among members of Enterobacterales, especially in the last 10 years. Screening and detection of carbapenemase-producing isolates is important in terms of both directing the treatment and preventing its spread. In our study, it was aimed to determine the carbapenemase types and molecular epidemiological relationships of carbapenem resistant Klebsiella pneumoniae isolates, which were isolated sequentially from the samples sent to microbiology laboratory of our hospital. Method: A total of 32 carbapenem-resistant K. pneumoniae isolates of the samples sent to microbiology laboratory between July and September 2014, were included in the study. In addition to classical methods, identification of isolates at species level was made with BD Phoenix ID/AST automated system. Carbapenemase types (blaOXA-48, blaNDM, blaIMP, blaKPC, blaVIM and blaGES) of the isolates were investigated by PCR. The clonal relationship between the isolates was assessed with PFGE. Results: It was noted that 18 isolates were obtained from intensive care units, 9 from inpatient and 5 from outpatient departments. The blaOXA48 gene was found in all isolates while the other carbapenemase genes were not found. It was determined that strains were isolated from 32 patients in our hospital had 12 different PFGE pulsotypes, named as A-L. Among these, the most common ones were B (n=18) and closely related B1 pattern (n=2). The remaining isolates were represented by 11 different types. It was observed that the first isolate with B pulsotype was responsible for the spread of the outbreak from General Intensive Care Unit. Conclusion: It has been thought that the spread of carbapenem- resistant K. pneumoniae isolates in the hospital was probably occurred through the transfer of isolates from patients with gastrointestinal colonization to other patients through hospital staff. Therefore, the spread of the isolates in hospitals can be limited by detecting colonization with active surveillance programs and by applying contact isolation and effective infection control measures.

Özet

Amaç: Özellikle son 10 yılda Enterobacterales üyeleri arasında karbapenem direnci artan sıklıkta rapor edilmeye başlanmıştır. Karbapenemaz üreten izolatların taranması ve saptanması, hem tedavinin doğru yönlendirilebilmesi hem de yayılımın önüne geçilebilmesi açısından önem taşımaktadır. Çalışmamızda hastanemiz Mikrobiyoloji laboratuvarına gönderilen örneklerden ardışık olarak soyutlanan karbapenem dirençli Klebsiella pneumoniae izolatlarının karbapenemaz tipleri ve moleküler epidemiyolojik ilişkilerinin saptanması amaçlanmıştır. Yöntem: Temmuz- Eylül 2014 tarihleri arasında Mikrobiyoloji laboratuvarına gönderilen örneklerden soyutlanan toplam 32 karbapeneme dirençli K. pneumoniae izolatı çalışmaya alındı. İzolatların tür düzeyinde tanımlanması klasik yöntemlere ek olarak BD Phoenix ID/AST otomatize sistemi ile yapıldı. İzolatların karbapenemaz tipleri (blaOXA-48, blaNDM, blaIMP, blaKPC, blaVIM ve blaGES) PCR ile araştırıldı. İzolatlar arasındaki klonal ilişki PFGE ile değerlendirildi. Bulgular: Onsekiz izolatın yoğun bakım ünitelerinden, dokuz izolatın servislerden ve beş izolatın polikliniklerden gönderilen örneklerden izole edildikleri görülmüştür. İzolatların tümünde blaOXA48 geni pozitif olarak saptanmış, diğer karbapenemaz genleri bulunmamıştır. Hastanemizde 32 farklı hastadan üretilen izolatların A-L olarak adlandırılan 12 farklı PFGE pulsotipine sahip olduğu belirlendi. Bunlar arasında en fazla görülenler B (n=18) ve bununla yakın ilişkili B1 paterni (n=2) idi. Geriye kalan izolatlar, birbirinden farklı olan 11 tiple temsil edildi. Salgından sorumlu B pulsotipine sahip ilk izolatın Genel Yoğun Bakım ünitesinden kaynaklanarak yayılım göstermiş olduğu görüldü. Sonuç: Karbapeneme dirençli K. pneumoniae izolatlarının hastanede yayılımının gastrointestinal kolonizasyonu olan hastalardan, hastane personelleri aracılığıyla diğer hastalara izolatların transferi yoluyla gerçekleşmiş olduğu düşünülmüştür. Bu nedenle aktif sürveyans programları ile kolonizasyonun saptanarak temas izolasyonu ve etkin enfeksiyon kontrol önlemlerinin uygulanması yoluyla hastanelerde izolatların yayılımı sınırlandırılabilir.

🔖

Cite This Article

YİŞ, R., GÜLAY, Z., SARI, A. N., GÜRBÜZ, E. D. (2022). Spread of Carbapenemase Producing Klebsiella pneumoniae Isolates in Our Hospital: Investigation of Molecular Typing and Clonal Relationship. Türk Mikrobiyoloji Cemiyeti Dergisi, Cilt: 51 - Sayı: 1, 33–41. https://ajindex.com/articles/635777

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (12)

  1. Reyes J, Aguilar AC, Caicedo A. Carbapenem-resistant Klebsiella pneumoniae: microbiology key points for clinical practice. Int J Gen Med. 2019;12:37-446.
  2. Logan LK, Weinstein RA. The epidemiology of carbapenem-resistant Enterobacteriaceae: The impact and evolution of a global menace. J Infect Dis. 2017;215(Suppl 1):S28-36.
  3. Xu L, Sun X, Ma X. Systematic review and meta-analysis of mortality of patients infected with carbapenemresistant Klebsiella pneumoniae. Ann Clin Microbiol Antimicrob. 2017;16(1):18.
  4. Carrër A, Poirel L, Eraksoy H, Cagatay A, Badur S, Nordmann P. Spread of OXA-48 positive carbapenemresistant Klebsiella pneumoniae isolates in Istanbul, Turkey, Antimicrob Agents Chemother. 2008;52(8): 2950-4.
  5. Zowawi HM, Sartor AL, Balkhy HH, et al. Molecular characterization of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae in the countries of the Gulf cooperation council: Dominance of OXA-48 and NDM producers. Antimicrob Agents Chemother. 2014;58(6):3085-90.
  6. L. Global spread of carbapenemase-producing Enterobacteriaceae. Emerg Infect Dis. 2011;17(10):1791-8.
  7. Brink AJ. Epidemiology of carbapenem-resistant Gramnegative infections globally. Curr Opin Infect Dis. 2019;32(6):609-16.
  8. Tängdén T, Giske CG. Global dissemination of extensively drug-resistant carbapenemase-producing Enterobacteriaceae: Clinical perspectives on detection, treatment and infection control. J Intern Med. 2015;277(5):501-12.
  9. Poirel L, Héritier C, Tolün V, Nordmann P. Emergence of oxacillinase-mediated resistance to imipenem in Klebsiella pneumoniae. Antimicrob Agents Chemother. 2004;48(1):15-22.
  10. Munoz-Price LS, Poirel L, Bonomo RA, et al. Clinical epidemiology of the global expansion of Klebsiella pneumoniae carbapenemases. Lancet Infect Dis. 2013;13(9):785-96.
  11. Clinical and Laboratory Standards Institute. Performance standards for antimicrobial susceptibility testing, 21 st informational supplement. CLSI Document M100-S21, 2013. CLSI, Wayne, PA
  12. Pellegrini C, Mercuri PS, Celenza G, et al. Identification of bla(IMP-22) in Pseudomonas spp. i