Diversity of Molecular Mechanisms Conferring Carbapenem Resistance to Pseudomonas aeruginosa Isolates from Saudi Arabia
Joint Authors
al-Agamy, Mohamed H.
El Mahdy, Taghrid S.
Shibl, Atef M.
Jeannot, Katy
Samaha, Hassan A.
Plésiat, Patrick
Courvalin, Patrice
Source
Canadian Journal of Infectious Diseases and Medical Microbiology
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-08-11
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Background.
This study described various molecular and epidemiological characters determining antibiotic resistance patterns in Pseudomonas aeruginosa isolates.
Methods.
A total of 34 carbapenem-resistant P.
aeruginosa clinical isolates were isolated from samples collected at a tertiary hospital in Riyadh, Saudi Arabia, from January to December 2011.
Susceptibility testing, serotyping, molecular characterization of carbapenem resistance, and pulsed-field gel electrophoresis (PFGE) were performed.
Results.
All isolates were resistant to ceftazidime, and more than half were highly resistant (minimum inhibitory concentration (MIC) > 256 mg/L).
Fifteen isolates had MIC values ≥64 mg/L for any of the carbapenems examined.
Vietnamese extended-spectrum β-lactamase (VEB-1) ( n = 16 / 34 ) and oxacillinase (OXA-10) ( n = 14 / 34 ) were the most prevalent extended-spectrum β-lactamase and penicillinase, respectively.
Verona imipenemase (VIM-1, VIM-2, VIM-4, VIM-11, and VIM-28) and imipenemase (IMP-7) variants were found in metallo-β-lactamase producers.
A decrease in outer membrane porin gene (oprD) expression was seen in nine isolates, and an increase in efflux pump gene (MexAB) expression was detected in five isolates.
Six serotypes (O:1, O:4, O:7, O:10, O:11, and O:15) were found among the 34 isolates.
The predominant serotype was O:11 (16 isolates), followed by O:15 (nine isolates).
PFGE analysis of the 34 carbapenem-resistant P.
aeruginosa isolates revealed 14 different pulsotypes.
Conclusions.
These results revealed diverse mechanisms conferring carbapenem resistance to P.
aeruginosa isolates from Saudi Arabia.
American Psychological Association (APA)
al-Agamy, Mohamed H.& Jeannot, Katy& El Mahdy, Taghrid S.& Samaha, Hassan A.& Shibl, Atef M.& Plésiat, Patrick…[et al.]. 2016. Diversity of Molecular Mechanisms Conferring Carbapenem Resistance to Pseudomonas aeruginosa Isolates from Saudi Arabia. Canadian Journal of Infectious Diseases and Medical Microbiology،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1099992
Modern Language Association (MLA)
al-Agamy, Mohamed H.…[et al.]. Diversity of Molecular Mechanisms Conferring Carbapenem Resistance to Pseudomonas aeruginosa Isolates from Saudi Arabia. Canadian Journal of Infectious Diseases and Medical Microbiology No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1099992
American Medical Association (AMA)
al-Agamy, Mohamed H.& Jeannot, Katy& El Mahdy, Taghrid S.& Samaha, Hassan A.& Shibl, Atef M.& Plésiat, Patrick…[et al.]. Diversity of Molecular Mechanisms Conferring Carbapenem Resistance to Pseudomonas aeruginosa Isolates from Saudi Arabia. Canadian Journal of Infectious Diseases and Medical Microbiology. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1099992
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1099992