Journals / Turkish Journal of Pharmaceutical Sciences / 2017 / Cilt: 14 - Sayı: 1

Antibiotic Resistance Profiles and Genotypes of Acinetobacter baumannii Isolates and In Vitro Interactions of Various Antibiotics in Combination with Tigecycline and Colistin

Acinetobacter baumannii İzolatlarının Antibiyotik Direnç Profili ve Genotipleri ile Tigesiklin ve Kolistinin Çeşitli Antibiyotiklerle Kombinasyonlarının İn Vitro Etkileşimleri

Pages
13–18
DOI
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AI Summary & Key Takeaways

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

Conclusion: In this study, both synergy tests showed that CL in combination with RF would be a good option in MDR A. baumannii.

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: The aim of this study was to determine the antibiotic resistance profile, clonal relation and efficacy of antibiotic combinations in nosocomial multidrug resistant (MDR) Acinetobacter baumannii.
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Key Findings & Data:Materials and Methods: Antibiotic susceptibilities of 84 MDR A. baumannii against tigecycline (TGC), colistin (CL), amikacin (AK), ciprofloxacin (CIP), meropenem (MR), moxifloxacin (MXF), rifampicin (RF) were determined by microdilution method.
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Conclusion & Impact:Conclusion: In this study, both synergy tests showed that CL in combination with RF would be a good option in MDR A. baumannii.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: The aim of this study was to determine the antibiotic resistance profile, clonal relation and efficacy of antibiotic combinations in nosocomial multidrug resistant (MDR) Acinetobacter baumannii. Materials and Methods: Antibiotic susceptibilities of 84 MDR A. baumannii against tigecycline (TGC), colistin (CL), amikacin (AK), ciprofloxacin (CIP), meropenem (MR), moxifloxacin (MXF), rifampicin (RF) were determined by microdilution method. Clonal relationship was investigated by genotyping using AP-PCR and antibiotyping. Interactions of antibiotic combinations were tested against clonally unrelated strains by the checkerboard (CB) method. The efficacy of the best combinations was also assesed on a selected isolate by the time-kill (TK) method. Results: CIP, RF, MXF, MR, AK resistance was found as 90.47%; 47.62%; 22.62%; 58.33%; 50% respectively; however; CL and TGC were not ascertained. The isolates were distinguished as 25 different antibiotypes and 15 varied molecular patterns. The best synergistic effect was detected in combinations of CL with RF (100%) and MR (100%), in combinations of TGC with RF (53%) against clonally unrelated 15 MDR A. baumannii isolates by the CB method. While CL-RF and CL-MR showed synergy by TK method like CB, on the other hand TGC-RF indicated additive interactions by TK. Conclusion: In this study, both synergy tests showed that CL in combination with RF would be a good option in MDR A. baumannii.

Özet

Amaç: Bu çalışmada nozokomiyal çoklu ilaç dirençli (ÇİD) Acinetobacter baumannii izolatlarının antibiyotik direnç profilinin belirlenmesi, moleküler düzeyde tiplendirmelerinin yapılması ve dirençli izolatlarda antibiyotik kombinasyonlarının aktivitesinin araştırılması amaçlandı. Gereç ve Yöntemler: Seksen dört ÇİD A. baumannii izolatına karşı tigesiklin (TGC), kolistin (CL), amikasin (AK), siprofloksasin (CIP), meropenem (MR), moksifloksasin (MXF) ve rifampisinin (RF) minimum inhibitör konsantrasyon (MİK) değerleri sıvı mikrodilüsyon yöntemi ile belirlendi. Epidemiyolojik ilişki, AP-PZR ve antibiyotiplendirme ile saptandı. Klonal ilişkisiz kökenlere antibiyotik kombinasyonlarının etkinliği dama tahtası (CB) yöntemi ile belirlendi. Dama tahtası yöntemi sonucunda, en etkin gözlenen kombinasyonun etkinliği, seçilmiş bir kökene karşı zamana bağlı öldürme eğrisi (TK) yöntemi ile de araştırıldı. Bulgular: CIP, RF, MXF, MR, AK'nin direnç oranları sırasıyla; %90.47; %47.62; %22.62; %58.33; %50 olarak belirlendi. TGC ve CL direnci görülmedi. Antibiyotik direnç profillerine göre 25 antibiyotip grubu belirlenirken, 15 farklı patern ayırt edildi. Klonal ilişkisiz 15 ÇİD A. baumannii izolatında CB yöntemiyle en iyi sinerjistik etki CL-RF (%100), CL-MR (%100) ve TGC-RF (%53) kombinasyonlarında gözlendi. Seçilmiş bir kökende TK yöntemiyle CL-RF ve CL-MR ile sinerji gözlendi, TGC-RF ile ise aditif etki saptandı. Sonuç: Bu çalışmada her iki sinerji testi de ÇİD A. baumannii izolatlarına karşı CL ile RF kombinasyonunun tedavide iyi bir seçim olacağını işaret etmiştir.

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Cite This Article

BÜYÜK, A., YILMAZ, F. F., YURTSEVER, S. G., LİMONCU, M. H. (2017). Antibiotic Resistance Profiles and Genotypes of Acinetobacter baumannii Isolates and In Vitro Interactions of Various Antibiotics in Combination with Tigecycline and Colistin. Turkish Journal of Pharmaceutical Sciences, Cilt: 14 - Sayı: 1, 13–18. https://ajindex.com/articles/403691

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References (11)

  1. Hagihara M, Housman ST, Nicolau DP, Kuti JL. In vitro pharmacodynamics of polymyxin B and tigecycline alone and in combination against carbapenem-resistant Acinetobacter baumannii. Antimicrob Agents Chemother. 2014;58:874-879
  2. O'Hara JA, Ambe LA, Casella LG, Townsend BM, Pelletler ML, Ernst RK. Activities of vancomycin-containing regimens against colistin-resistant Acinetobacter baumannii clinical strains. Antimicrob Agents Chemother. 2013;57:2103-2108
  3. Percin D, Akyol S, Kalın G. In vitro synergism of combinations of colistin with selected antibiotics against colistin-resistant Acinetobacter baumannii. GMS Hyg Infect Control. 2014;9:Doc14
  4. Lee HJ, Bergen PJ, Bulitta JB, Tsuji B, Forrest A, Nation RL, Li J. Synergistic activity of colistin and rifampin combination against multidrug-resistant Acinetobacter baumannii in an in vitro pharmacokinetic/pharmacodynamic model. Antimicrob Agents Chemother. 2013;57:3738-3745
  5. Ni W, Shao X, Di X, Cui J, Wang R, Lui Y. In vitro synergy of polymyxins with other antibiotics for Acinetobacter baumannii: A systematic review and meta-analysis. Int J Antimicrob Agents. 2015;45:8-18
  6. Al-Shaer M, Nazer LH, Kherallah M. Rifampicin as adjunct to colistin therapy in the treatment of multidrug-resistant Acinetobacter baumannii. Ann Pharmacother. 2014;48:766-771
  7. Principe L, D'Arezzo S, Capone A, Petrosillo N, Visca P. In vitro activity of tigecycline in combination with various antimicrobials against multidrug resistant Acinetobacter baumannii. Ann Clin Microbiol Antimicrob. 2009;8:18
  8. Tan TY, Lim TP, Lee WHL, Sasikala S, Hsu LY, Kwa AL. In vitro antibiotic synergy in extensively drug-resistant Acinetobacter baumannii: the effect of testing by time-kill, checkerboard, and E test methods. Antimicrob Agents Chemother. 2011;55:436-438
  9. Clinical and Laboratory Standards Institute. Methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically. Approved Standard, 7th ed. CLSI document M7-A7, Wayne, PA, USA, 2006. p. 1-17 10. Prashanth K, Badrinath S. Epidemiological investigation of nosocomial Acinetobacter infections using arbitrarily primed PCR & pulse field gel electrophoresis. Indian J Med Res. 2005;122:408-418
  10. Ayan M, Durmaz R, Aktaş E, Durmaz B. Bacteriological, clinical and epidemiological characteristics of hospital-acquired Acinetobacter baumannii infection in a teaching hospital. J Hosp Infect. 2003;54:39-45
  11. Pillai SK, Mollering RC, Eliopoulos GM. Antimicrobial