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Paper Information

Journal:   PAJOUHESH DAR PEZESHKI   FALL 2007 , Volume 31 , Number 3; Page(s) 241 To 245.
 
Paper: 

SURVEY OF DRUG RESISTANCE DUE TO EXTENDED SPECTRUM BETA-IACTAMASES IN KLEBSIELLA PNEUMONIAE STRAINS ISOLATED FROM HOSPITALIZED PATIENTS

 
 
Author(s):  AMIR MOZAFARI N.*, TEHRANI H.F., TAVAF LANGEROUDI Z., ABD ELAHI ABAS
 
* DEPARTMENT OF MICROBIOLOGY, IRAN UNIVERSITY OF MEDICAL SCIENCES
 
Abstract: 

Background: Klebsiella pneumoniae is one of the most important and prevalent bacterium isolated from clinical cases especially from hospitalized patients. Recent studies have focused on multiple drug resistant Kpneumoniae strains. In this survey, drug resistance in clinical isolates was studied with special reference to extended spectrum b-lactamase.
Methods: A total of 303 Kpneumoniae strains isolated from hospitalized patients were initially surveyed for drug resistance by disc diffusion method. The resistance of the isolated strains to different antibiotics was determined by E-test.
b-lactamase production was tested with nitrocephin discs and extended spectrum b-lactamase assays were performed with double disc synergy tests.
Results: From the total of 303 Kpneumoniae isolates tested, 62, (20.4%), showed multi drug resistance, (MDR). All of these MDR strains were positive for nitrocephin test, indicating
b-lactamase production. Double disc synergy tests results showed production of extended spectrum b-lactamase in all MDR isolates.
Conclusion: Detection of 20.4% MDR strains, especially extended spectrum
b-lactamase, from K.
pneumoniae isolated from hospitalized patients, emphasizes the potential dangers of the widespread usage of extended spectrum cephalosporins. It also necessitates conduction of a wider study to determine the nationwide incidence of K. pneumoniae.

 
Keyword(s): KLEBSIELLA PNEUMONIAE, EXTENDED SPECTRUM BETA-LACTAMASE (ESRL), MULTIPLE DRUG RESISTANCE (MDR)
 
References: 
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