Occurrence of extended-spectrum b-lactamases amongEscherichia coli isolates from hospitalized and healthy children
The prevalence of extended-spectrum b-lactamases (ESBL) was determined among isolates ofEscherichia coli (n=63) isolated from hospitalized (43) and healthy (20) children. Ten isolates (21 %) were ESBL-positive for two screening tests, the double disk-synergy test and theOxoid Combination Disk method...
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Published in | Folia microbiologica Vol. 48; no. 2; pp. 243 - 247 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
01.03.2003
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Subjects | |
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Abstract | The prevalence of extended-spectrum b-lactamases (ESBL) was determined among isolates ofEscherichia coli (n=63) isolated from hospitalized (43) and healthy (20) children. Ten isolates (21 %) were ESBL-positive for two screening tests, the double disk-synergy test and theOxoid Combination Disk method. One ESBL-positive isolate came from a healthy child. The transfer frequency of oxyimino-b-lactam resistance from ESBL-producing isolates toE. coli K12 C600 recipient strain ranged from 10 super(-8) to 10 super(-5) per donor cell. Donor strains and transconjugants displayed susceptibility patterns typical of ESBL producers. They were resistant to oxyimino-b-lactams but susceptible to clavulanic acid and carbapenems. Seven out of the 10 ESBL-positive isolates were found to produce MR/MS fimbria, which may play an important role in the colonization of the human intestinal mucosa. |
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AbstractList | The prevalence of extended-spectrum b-lactamases (ESBL) was determined among isolates ofEscherichia coli (n=63) isolated from hospitalized (43) and healthy (20) children. Ten isolates (21 %) were ESBL-positive for two screening tests, the double disk-synergy test and theOxoid Combination Disk method. One ESBL-positive isolate came from a healthy child. The transfer frequency of oxyimino-b-lactam resistance from ESBL-producing isolates toE. coli K12 C600 recipient strain ranged from 10 super(-8) to 10 super(-5) per donor cell. Donor strains and transconjugants displayed susceptibility patterns typical of ESBL producers. They were resistant to oxyimino-b-lactams but susceptible to clavulanic acid and carbapenems. Seven out of the 10 ESBL-positive isolates were found to produce MR/MS fimbria, which may play an important role in the colonization of the human intestinal mucosa. |
Author | Grabowski, M Sobieszczaska, B Mowszet, K Pytrus, T Franiczek, R |
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Title | Occurrence of extended-spectrum b-lactamases amongEscherichia coli isolates from hospitalized and healthy children |
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