Prevalence of Carbapenem Resistance in Acinetobacter baumannii Isolates from Burn and Non-Burn Patients in Tehran
Abstract
Background: Acinetobacter baumannii has become one of the most important causes of nosocomial infections in recent years. The organism seems to be resistant to most classes of antibiotics. Carbapenems are considered the most effective drugs for treatment of these infections. However, increasing emergence of carbapenem resistant A. baumannii has become a major healthcare problem.
Methods: The present study was conducted to compare the antibiotic susceptibility of 61 isolates of A. baumannii (31 from patients with burn infections and 30 from non-burn patients) to 12 antibiotics including imipenem and meropenem by disc diffusion.
Results: Both groups of the isolates showed high levels of resistance to all classes of antibiotics except for aminoglycosides. Imipenem resistance was observed in 96.7% of the non-burn isolates and 100% among the burn strains.
Conclusion: On the other hand, resistance to meropenem was significantly higher in non-burn isolates (83.3%) compared to the burn strains (6.4%).
Peleg A, Seifert H, Paterson D. Acinetobacter baumannii: Emergence of a Successful Pathogen. Clin Microbiol Rev 2008; 21: 538-82.
Manchanda V, Sanchaita S, Singh N. Multidrug Resistant Acinetobacter. J Glob Infect Dis 2010; 2: 291-304.
Maragakis L, Perl T. Acinetobacter baumannii: Epidemiology, Antimicrobial Resistance and Treatment Options. Clin Infect Dis 2008; 46: 1254-63.
Poirel L, Nordmann P. Carbapenem resistance in Acinetobacter baumannii: mechanisms and epidemiology. Clin Microbiol Infect 2006; 12: 826-36.
Lu P, Doumith M, Livermore D, et al. Diversity of carbapenem resistance mechanisms in Acinetobacter baumannii from a Taiwan Hospital: spread of plasmid-borne OXA-72 carbapenemase. J Antimicrob Chemother 2009; 63: 641-47.
Zarrilli R, Giannouli M, Tomasone F, et al. Carbapenem resistance in Acinetobacter baumannii: the molecular epidemic features of an emerging problem in health care facilities. J Infect Dev Ctries 2009; 3: 335-41.
Yang H, Lee H, Suh J, et al. Outbreaks of imipenem resistant Acinetobacter baumannii producing OXA-23 β-Lactamase in a tertiary care hospital in Korea. Yonsei Med J 2009; 50: 764-70.
He´ritier C, Poirel L, Fournier P, et al. Characterization of the naturally occurring oxacillinase of Acinetobacter baumannii. Antimicrob Agents Chemother 2005; 49: 4174-79.
Walther-Rasmussen J, Høiby N. OXA-type carbapenemases. J Antimicrob Chemother 2006; 57: 373-83.
Clinical and laboratory standards institute (CLSI). Performance standards for antimicrobial testing supplement. Twenty-First Informational Supplement. 2011; 31: 62-3.
Albrecht MA, Griffith ME, Murray CK, et al. Impact of Acinetobacter infection on the mortality of burn patients. Am College Surg 2006; 203: 546-50.
Azimi L, Motevallian A, Ebrahimzadeh A, et al. Nosocomial infections in burned patients in Motahari Hospital, Tehran, Iran. Dermatol Res Pract 2011; 1-4.
Sunenshine RH, Wright MO, Maragakis LL, et al. Multidrug-resistant Acinetobacter infection mortality rate and length of hospitalization. Emerg Infect Dis 2007; 13: 97-103.
Jones RN, Sader HS, Fritsche TR, et al. Carbapenem susceptibility discords among Acinetobacter isolates. Clin Infect Dis 2006; 42: 158.
Rhomberg PR, Jones RN. Antimicrobial spectrum of activity for meropenem and nine broad-spectrum antimicrobials: report from the MYSTIC Program in North America (2002). Diagn Microbiol Infect Dis 2003; 47(1): 365-72.
Ferreira M, Coadou G, Molle V, et al. Structure–function relationships of Caro, the carbapenem resistance associated outer membrane protein of Acinetobacter baumannii. J Antimicrob Chemother 2011; 66: 2053-56.
Lesho E, Wortmann G, Moran K, et al. Fatal Acinetobacter baumannii infection with discordant carbapenem susceptibility. Clin Infect Dis 2005; 41(5): 758-59.
Mostofi S, Mirnejad R, Masjedian F. Multi-drug resistance in Acinetobacter baumannii strains isolated from clinical specimens from three hospitals in Tehran-Iran. Afr J Microbiol Res 2011; 5(21): 3579-82.
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Issue | Vol 4 No 3-4 (2015) | |
Section | Short Communications | |
Keywords | ||
Acinetobacter baumannii Antibiotic resistance Imipenem Meropenem Carbapenem |
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