Journals / İnönü Üniversitesi Turgut Özal Tıp Merkezi Dergisi / 2016 / Cilt: 23 - Sayı: 1

Evaluation of Metallo Beta Lactamase E test Results from Different Brands of Mueller Hinton Agar Plates

MBL E Test Araştırmasında 5 Farklı Marka Müller-Hinton Agar Besiyerlerinden Elde Edilen Sonuçların Değerlendirilmesi

Pages
21–25
Publication Date
2022-10-17
DOI
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Aim: MBL E test for MBL screening in carbapenem resistant Pseudomonas aeruginosa isolatesis recommended as a fast and reliable phenotypic screening test.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: MBL E test for MBL screening in carbapenem resistant Pseudomonas aeruginosa isolatesis recommended as a fast and reliable phenotypic screening test.
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Key Findings & Data:However, as it has been putforward by some reserachers, because of variations in antibiotic susceptibility tests or MBL Etest with different brands of Müeller- Hinton Agar (MHA) media, the possibility thatcarbapenem MIK values and MBL E test results can, therefore, be influenced by these media.To this end, we aim to determine the most suitable MHA media to be used in search for MBLE test in routine microbiology laboratories by employing five different brands of MHA media.Materials and Methods: 29 carbapenem resistant Pseudomonas aeruginosa strains isolatedfrom hospitalised patients have been used in this study.
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Conclusion & Impact:One isolate with BBL brandMHA, two isolates with Oxoid brand MHA, 19 isolates with Himedia brand MHA, 21 isolateswith Merck brand MHA, and 27 isolates with Plasmatec brand MHA gave positive results.Conclusion: The present results indicate that use of BBL or Oxoid brand MHA media,especially in laboratories without any fascilities for molecular diagnosis, can be more reliablecompared to other brands.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: MBL E test for MBL screening in carbapenem resistant Pseudomonas aeruginosa isolatesis recommended as a fast and reliable phenotypic screening test. However, as it has been putforward by some reserachers, because of variations in antibiotic susceptibility tests or MBL Etest with different brands of Müeller- Hinton Agar (MHA) media, the possibility thatcarbapenem MIK values and MBL E test results can, therefore, be influenced by these media.To this end, we aim to determine the most suitable MHA media to be used in search for MBLE test in routine microbiology laboratories by employing five different brands of MHA media.Materials and Methods: 29 carbapenem resistant Pseudomonas aeruginosa strains isolatedfrom hospitalised patients have been used in this study. P.aeruginosa isolates were identifiedby conventional methods. Imipenem and meropenem E test were used for verification ofcarbapenem resistance. MBL E test was used for detecting MBL production by five differentbrands of Mueller Hinton agar plates and the results of these tests were compared withpolymerase chain reaction (PCR) results.Results: IMP, VIM, GIM, SIM and SPM type genes were found to be negative with polymerasechain reaction for 29 isolates that were resistant to carbapenem. One isolate with BBL brandMHA, two isolates with Oxoid brand MHA, 19 isolates with Himedia brand MHA, 21 isolateswith Merck brand MHA, and 27 isolates with Plasmatec brand MHA gave positive results.Conclusion: The present results indicate that use of BBL or Oxoid brand MHA media,especially in laboratories without any fascilities for molecular diagnosis, can be more reliablecompared to other brands.

Özet

Amaç: Karbapenem dirençli Pseudomonas aeruginosa izolatlarında MBL taraması için MBL E test; hızlı ve güvenilir fenotipik test olarak önerilmektedir. Ancak antibiyotik duyarlılık testlerinde MBL E testinde kullanılan farklı marka Müeller- Hinton Agar (MHA) besiyerlerinde karbapenem MİK değerleri ve MBL E test sonuçlarının etkilenebileceğini gösteren çalışmalar mevcuttur. Bu nedenle çalışmamızda 5 farklı marka MHA besiyeri kullanarak, rutin mikrobiyoloji laboratuarlarında MBL E test araştırılmasında kullanılabilecek en uygun marka MHA besiyerini belirlemeyi amaçladık. Gereçler ve Yöntemler: Çalışmada yatan hastalardan izole edilen, karbapenemlere dirençli 29 Pseudomonas aeruginosa izolatları konvansiyonel yöntemler ile tanımlanmıştır. Karbapenem direncini doğrulamak için imipenem ve meropenem E test (AB BIODISK, Solna, İsveç) kullanılmıştır. MBL üretimini belirlemek için MBL E test (AB BIODISK, Solna, İsveç) beş farklı marka (Oxoid, BBL, Merck, Himedia, Plasmatec) Müller Hinton agar (MHA) besiyerinde test edilmiş ve elde edilen sonuçlar Polimeraz Zincir Reaksiyonu sonuçları ile karşılaştırılmıştır. Bulgular: Karbapenemlere dirençli 29 izolatta Polimeraz Zincir Reaksiyonu ile IMP, VIM, GIM, SIM ve SPM tipi metallo beta-laktamaz geni saptanmamıştır. MBL E test ile BBL marka MHA besiyerinde bir izolat (1/29), Oxoid marka MHA besiyerinde iki izolat (2/29), Himedia marka MHA besiyerinde 19 izolat (19/29) Merck marka MHA besiyerinde 21 izolat (21/29), Plasmatec marka MHA besiyerinde 27 izolat (27/29) pozitif sonuç vermiştir. Sonuç: Moleküler tanı yapma olanağı olmayan laboratuvarlarda MBL E test araştırmalarında BBL ve Oxoid marka besiyerlerinin, diğer besiyerlerine oranla daha güvenilir bir şekilde kullanılabileceği sonucuna varılmıştır.

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Cite This Article

Ay, S., Serindağ, A., Karademir, F., Otlu, B., Tekerekoğlu, M. S., Mansur, A. (2022). Evaluation of Metallo Beta Lactamase E test Results from Different Brands of Mueller Hinton Agar Plates. İnönü Üniversitesi Turgut Özal Tıp Merkezi Dergisi, Cilt: 23 - Sayı: 1, 21–25. https://ajindex.com/articles/549214

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References (13)

  1. Brooks GF, Carroll KC, Butel JS, Morse SA. Pseudomonads, Acinetobacters, and uncommon Gramnegative bacteria.In: Brooks GF, Carroll KC, Butel JS, Morse SA eds Jawetz, Melnick, & Adelberg's Medical Microbiology. 24th edition. USA: McGraw-Hill Co; 2013. p.245-49
  2. Strateva T, Yordanov D. Pseudomonas aeruginosa - a phenomenon of bacterial resistance. J Med Microbiol 2009;58:1133-48
  3. Pitt TL, Simpson AJH. Pseudomonas and Bulkholderia spp. In: Gillespie SH, Hawkey PM. Principles and Practice of Clinical Bacteriology. 2th edition. England:John Wiley and Sons Ltd; 2006. p. 427-35
  4. Bahar G, Mazzariol A, Koncan R, Mert A, Fontana R, Rossolini GM et al. Detection of VIM-5 metallo-betalactamase in a Pseudomonas aeruginosa clinical isolate from Turkey. J Antimicrob Chemother 2004;54:282-3
  5. Özgümüş OB, Caylan R, Tosun I, Sandallı C, Aydın K, Köksal I. Molecular epidemiology of clinical Pseudomonas aeruginosa isolates carrying IMP-1 metallo-beta-lactamase gene in a University Hospital in Turkey. Microb Drug Resist 2007;13:191-8
  6. Gülay Z. Enterobacteriaceae Moleküler Epidemiyolojisi, ANKEM Derg 2014;28:73-6
  7. Lee K, Yong D, Yum JH, Lim YS, Bolmström A, Qwarnstrom A et al: Evaluation of E test MBL for detection of blaIMP-1 and blaVIM-2 allele-positive clinical isolates of Pseudomonas spp. and Acinetobacter spp. J Clin Microbiol 2005;43:942-4
  8. Walsh TR, Bolmstrom A, Qwarnstrom A, Gales A: Evaluation of a new E test for detecting metallo-betalactamases in routine clinical testing. J Clin Microbiol 2002;40:2755-9
  9. Mazarrasa CF, Mazarrasa O, Calvo J, Arco A, Martínez LM. High concentrations of manganese in Mueller– Hinton agar increase MICs of tigecycline determined by Etest. J Clin Microbiol 2009; 47: 827-9
  10. Torrico M, González N, Giménez MJ, Alou L, Sevillano D, Navarro D, Díaz-Antolín MP, Larrosa N, Aguilar L, Garcia-Escribano N. Influence of media and testing methodology on susceptibility to tigecycline of Enterobacteriaceae with reported high tigecycline MIC. J Clin Microbiol 2010;48:2243-6
  11. Clinical and Laboratory Standards Institute: Performance Standards for Antimicrobial Susceptibility Testing, 19th Informational Supplement, M100-S19, CLSI. Pennsylvania: Wayne 2009
  12. Ellington MJ, Kistler J, Livermore DM, Woodford N: Multiplex PCR for rapid detection of genes encoding acquired metallo-beta-lactamases. J Antimicrob Chemother 2007;59:321-2
  13. Palzkill T. Metallo-β-lactamase structure and function. Ann N Y Acad Sci 2013;1277:91-104.