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Phenotypic and Genotypic Characterization of Extended-Spectrum Beta-Lactamases Produced by Escherichia coli Colonizing Pregnant Women
Joint Authors
Matar, Ghassan M.
Halimeh, Rawad
Anastasiadis, Elie
Ghaddar, Nahed
Ghaddar, Ali
Abou Fayad, Antoine
Sherri, Nour
Dhar, Rita
AlFouzan, Wadha
Yusef, Hoda
El Chaar, Mira
Source
Infectious Diseases in Obstetrics and Gynecology
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-23
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Introduction.
Infections caused by extended spectrum beta lactamase (ESBL) producing bacteria continue to be a challenge for choosing the appropriate therapy since they may exhibit coresistance to many other classes of antibiotics.
The aim of the study was to screen pregnant women for ESBL producing bacteria in Beirut, Lebanon, to examine their phenotypic and genotypic characterization and to study the association between ESBL colonization with adverse neonatal outcomes.
Method.
In this cross-sectional study, vaginal samples from 308 pregnant women at 35–37 weeks of gestation were studied during a one-year period.
The samples were plated on MacConkey agar and selective MacConkey agar supplemented with ceftazidime.
Phenotypic confirmation of ESBL production was performed by double-disc synergy test and all isolates were screened by PCR for the resistance genes blaSHV, blaTEM, and blaCTX-M.
Clonal relatedness of Escherichia coli isolates was investigated by pulsed-field gel electrophoresis.
Results.
In total, 59 women out of 308 (19.1%) were colonized by ESBL producing gram negative bacteria.
Two babies born to mothers colonized with ESBL were diagnosed with sepsis.
The susceptibility rates of isolates to other antibiotics were 39% to co-trimoxazole, 49.2% to ciprofloxacin, 91.5% to gentamicin, 18.6% to aztreonam and 35.6% to cefepime.
Most of isolates were highly sensitive to meropenem and imipenem, with a susceptibility of 93.2%.
PCR was performed on all E.
coli isolates to detect the most common ESBL producing genes; blaCTX-M was the predominant gene (90.7%), followed by blaTEM (88.4%) and finally blaSHV (44.2%).
PFGE analysis of 34 E.
coli isolates revealed 22 distinct clusters showing more than 85% similarity.
Conclusion.
In conclusion, this study showed that Lebanon has a high prevalence of ESBL carriage in pregnant women.
Further studies that include a continuous screening of pregnant women and follow up of their newborn clinical status should be conducted to foresee the risk of transmission.
American Psychological Association (APA)
Ghaddar, Nahed& Anastasiadis, Elie& Halimeh, Rawad& Ghaddar, Ali& Matar, Ghassan M.& Abou Fayad, Antoine…[et al.]. 2020. Phenotypic and Genotypic Characterization of Extended-Spectrum Beta-Lactamases Produced by Escherichia coli Colonizing Pregnant Women. Infectious Diseases in Obstetrics and Gynecology،Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1167270
Modern Language Association (MLA)
Ghaddar, Nahed…[et al.]. Phenotypic and Genotypic Characterization of Extended-Spectrum Beta-Lactamases Produced by Escherichia coli Colonizing Pregnant Women. Infectious Diseases in Obstetrics and Gynecology No. 2020 (2020), pp.1-7.
https://search.emarefa.net/detail/BIM-1167270
American Medical Association (AMA)
Ghaddar, Nahed& Anastasiadis, Elie& Halimeh, Rawad& Ghaddar, Ali& Matar, Ghassan M.& Abou Fayad, Antoine…[et al.]. Phenotypic and Genotypic Characterization of Extended-Spectrum Beta-Lactamases Produced by Escherichia coli Colonizing Pregnant Women. Infectious Diseases in Obstetrics and Gynecology. 2020. Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1167270
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1167270