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:: Volume 18, Issue 2 (Bimonthly 2014) ::
Feyz 2014, 18(2): 167-174 Back to browse issues page
Frequency of β-lactamase and metallo-β-lactamase in Pseudomonas aeruginosa strains isolated from burn wounds in Yazd burn hospital during 2011-2012
ّFatemeh Akhavan Tafti, Hengameh Zandi *, Mahmood Vakli, Seyyed Morteza Mousavi, Mohadeseh Zarei
Shahid Sadoughi University of Medical Sciences , hengameh_zandi@yahoo.com
Abstract:   (14956 Views)

Background: Pseudomonas aeruginosa is a gram-negative, non-fermentative bacillus and one of the most common opportunistic human pathogen causing 10-15% of nosocomial and burn wound infections worldwide. These bacteria are resistant to most of the antibiotics. This study aimed to investigate the frequency of extended spectrum β-lactamase (ESBL) and metallo-β-lactamase (MBL) enzymes in P.aeruginosa strains isolated from burn wounds.

Materials and Methods: In this descriptive cross-sectional study, 180 wound specimens were collected from patients hospitalized in burn hospital and then cultured. The suspected colonies were identified using the conventional biochemical methods. Susceptibility testing was performed using the Kirby-Bauer method. Moreover, the Combination Disk and E.test methods were used for the determination of ESBLs and MBL, respectively.

Results: Fifty-four (30%) out of 180 cultured samples were identified as p.aeruginosa 12 (22%) and 16 (29.5%) isolates were ESBLs and MBL producer, respectively. Overall, 42 (79%), 40 (74%), 40 (74%), 38 (70%), 35 (66%) and 34 (62%) isolates were resistant to ceftizoxime, imipenem, gentamycin, piperacillin, cefepime, meropenem and ertapenem, respectively.

Conclusion: Results reveal that the antimicrobial resistance and prevalence of ESBLs and MBL producing P.aeruginosa strains is increasing in our hospital and it is necessary to perform susceptibility testing, control risk factors and reasonably prescribe the appropriate antibiotics. Considering the diversity of ESBL and MBL classes and their prevalence in different areas, performing molecular research is needed.

Keywords: MBL, ESBL, Pseudomonas aeruginosa, Antibiotic resistance, Burn
Full-Text [PDF 295 kb]   (3498 Downloads)    
Type of Study: Research | Subject: medicine, paraclinic
Received: 2014/04/19 | Revised: 2014/04/30 | Accepted: 2014/04/19 | Published: 2014/04/19
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Akhavan Tafti ّ, Zandi H, Vakli M, Mousavi S M, Zarei M. Frequency of β-lactamase and metallo-β-lactamase in Pseudomonas aeruginosa strains isolated from burn wounds in Yazd burn hospital during 2011-2012. Feyz 2014; 18 (2) :167-174
URL: http://feyz.kaums.ac.ir/article-1-2235-en.html

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Volume 18, Issue 2 (Bimonthly 2014) Back to browse issues page
مجله علوم پزشکی فیض Feyz Medical Sciences Journal
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