scholarly journals Molecular Typing of Klebsiella pneumoniae isolates using Repetitive Extragenic Palindromic Sequence-Based PCR in a Hospital in Tehran, Iran

2017 ◽  
Vol 6 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Abdolmajid Ghasemian ◽  
Morvarid Shafiei ◽  
Majid Eslami ◽  
Mahtab Vafaei ◽  
Farshad Nojoom ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Molecular Typing ◽  
Palindromic Sequence ◽  
Repetitive Extragenic Palindromic

An Outbreak of ESBL-producing Klebsiella pneumoniae in an Iranian Referral Hospital: Epidemiology and Molecular Typing

2019 ◽  
Vol 19 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Shima Mahmoudi ◽  
Babak Pourakbari ◽  
Aliakbar Rahbarimanesh ◽  
Mohammad Reza Abdosalehi ◽  
Keyghobad Ghadiri ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Nosocomial Infections ◽  
Molecular Typing ◽  
Genetic Relatedness ◽  
Referral Hospital ◽  
Limited Information ◽  
Hospital Epidemiology ◽  
Rapd Pcr ◽  
Published Report ◽  
Random Amplification

Introduction: Klebsiella pneumoniae is a common cause of nosocomial infections; however, there is limited information in Iran regarding nosocomial outbreaks due to extended-spectrum β–lactamase (ESBL) producing K pneumoniae strains, particularly using molecular methods. The present study focused on the molecular mechanism of ESBL resistance and genetic relatedness in K. pneumoniae isolates causing nosocomial infections in an Iranian referral hospital. Material and Methods: This study evaluated the antimicrobial resistance and molecular epidemiology of K. pneumoniae causing nosocomial infections in children between October 2013 and March 2014. The ESBL detection was carried out for all the isolates by the CLSI method and PCR was carried out for the detection of the blaSHV, blaTEM, and blaCTX-M genes among ESBL-producing K. pneumonia. Molecular typing of the K. pneumoniae was performed using random amplification of polymorphic DNA-polymerase chain reaction (RAPD-PCR). Results: A total of 30 isolates of K. pneumoniae were used for epidemiological analysis. High rates of resistance to cefotaxime (n=29, 97%), cefazolin (n=29, 97%), cefepime (n=25, 83%) and gentamicin (n=23, 77%) were observed. A total of 29 strains (97%) produced ESBLs. The frequency of blaSHV, blaCTX-M and blaTEM genes among these isolates was 83% (n=25), 70% (n=21) and 57% (n=17), respectively. Surprisingly 11 isolated (37%) carried blaSHV, blaCTX-M and blaTEM genes simultaneously. Moreover, the concurrent presence of “blaSHV and blaCTX-M” and “blaSHV and blaTEM” was seen in 8 (27%) and 4 (13%) isolates, respectively. RAPDPCR analyses revealed that K. pneumoniae isolates belonged to 2 RAPD-PCR types among which one cluster counted for 28 isolates. Conclusion: To our knowledge, this is the first published report of a nosocomial outbreak of ESBL-producing K. pneumoniae in children in Iran. Although the epidemiology of nosocomial infections with ESBL-producing organisms has not yet been explored in depth in Iran, our findings suggest that ESBL-producing organisms are already an established public health threat in our country.

scholarly journals Molecular Typing of Klebsiella pneumoniae Isolated from Medical Centers in Kermanshah Using Pulse Field Gel Electrophoresis

2019 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Azam Elahi ◽  
Alisha Akya ◽  
Roya Chegene Lorestani ◽  
Keyghobad Ghadiri ◽  
Shokofe Baakhshii
Keyword(s):  
Klebsiella Pneumoniae ◽  
Molecular Typing ◽  
Gel Electrophoresis ◽  
Pulse Field ◽  
Pulse Field Gel Electrophoresis ◽  
Medical Centers

scholarly journals The Inc FII Plasmid and its Contribution in the Transmission of blaNDM-1 and blaKPC-2 in Klebsiella pneumoniae in Egypt

Antibiotics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 266 ◽  
Author(s):  
Eman Ramadan Mohamed ◽  
Mamdouh Yones Ali ◽  
Nancy G F M Waly ◽  
Hamada Mohamed Halby ◽  
Rehab Mahmoud Abd El-Baky
Keyword(s):  
Polymerase Chain Reaction ◽  
Klebsiella Pneumoniae ◽  
Molecular Typing ◽  
University Hospital ◽  
Chain Reaction ◽  
Great Problem ◽  
E Coli ◽  
String Test ◽  
Resistance Patterns ◽  
Polymerase Chain

The emergence of blaKPC-2 and blaNDM-1 producing Klebsiella pneumoniae represents a great problem in many Egyptian hospitals. One hundred and twenty-six K. pneumoniae isolates from patients admitted to Assiut University Hospital were identified by an API20E kit. Carbapenemase-producing K. pneumoniae (CPKP) was detected by the modified carbapenem inactivation method (mCIM), the EDTA-modified carbapenem inactivation method (eCIM), and an E-test. Based on the polymerase chain reaction, all isolates were negative for bla-VIM-1 and bla-IMP-1, fifteen of these isolates were positive for both blaKPC-2 and blaNDM-1, two isolates were positive for blaKPC-2 only, and twenty-eight isolates were positive for bla-NDM-1 only. Although one isolate was positive for the string test, all CPKP isolates were negative for capsular genes. Only 71.1% of CPKP transferred their plasmids to their corresponding transconjugants (E. coli J53). The resistance patterns of the clinical isolates and their transconjugates were similar, except for 12 isolates, which showed differences with their transconjugates in the resistance profile of four antibiotics. Molecular typing of the plasmids based on replicon typing showed that Inc FIIK and FII plasmids predominated in isolates and their transconjugants carrying blaKPC-2 and/or blaNDM-1. Conjugative Inc FII plasmids play an important role in the spread of CPKP, and their recognition is essential to limit their spread.

Molecular Typing ofMycobacterium chelonaeIsolates From a Pseudo-outbreak Involving an Automated Bronchoscope Washer

2008 ◽  
Vol 29 (11) ◽  
pp. 1088-1090 ◽  
Author(s):  
Alexandra Chroneou ◽  
Sarah K. Zimmerman ◽  
Steven Cook ◽  
Sandra Willey ◽  
Jane Eyre-Kelly ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Bronchoalveolar Lavage ◽  
Molecular Typing ◽  
Bronchoalveolar Lavage Fluid ◽  
Lavage Fluid ◽  
Clinical Findings ◽  
Chain Reaction ◽  
Mycobacterium Chelonae ◽  
Polymerase Chain ◽  
Repetitive Extragenic Palindromic

We describe a pseudo-outbreak ofMycobacterium chelonaeinfection in bronchoalveolar lavage fluid from 9 patients that was traced to contamination of an automated bronchoscope washer. Molecular typing using repetitive extragenic palindromic polymerase chain reaction was helpful in confirming epidemiologic and clinical findings.

scholarly journals Molecular typing of Klebsiella pneumoniae isolates from public hospitals in Recife, Brazil

2005 ◽  
Vol 160 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Ana Catarina de Souza Lopes ◽  
Juliana Falcão Rodrigues ◽  
Marcos Antônio de Morais Júnior
Keyword(s):  
Klebsiella Pneumoniae ◽  
Molecular Typing ◽  
Public Hospitals

scholarly journals Characteristics of dual carbapenemase-producing Klebsiella pneumoniae strains from an outbreak in Venezuela: a retrospective study

2020 ◽  
Vol 44 ◽  
pp. 1
Author(s):  
Dianny Martínez ◽  
Luisa Caña ◽  
Hectorina Rodulfo ◽  
José García ◽  
Diorelis González ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Klebsiella Pneumoniae ◽  
Boronic Acid ◽  
Molecular Typing ◽  
Control Strategies ◽  
Mercaptoacetic Acid ◽  
Central Hospital ◽  
Synergy Test ◽  
Phenotypic Methods ◽  
Surrounding Areas

Objective. To characterize carbapenemase-producing Klebsiella pneumoniae isolated from patients treated at a hospital in Cumaná, Sucre, Venezuela. Methods. This was a retrospective study conducted at the general hospital in Cumaná where 58 K. pneumoniae strains were analyzed for resistance to antimicrobials, specifically carbapenems, in January – June 2015. Production of metallo-β-lactamases and serine carbapenemases was determined by the double-disc synergy test, using EDTA-sodium mercaptoacetic acid and 3-aminophenyl boronic acid discs, respectively. Multiplex-PCR was used to detect genes coding for carbapenemases. Molecular typing using ERIC-PCR determined the presence of clones. Results. Four strains of K. pneumoniae resistant to carbapenems were identified. Phenotypic methods for detection of metallo-β-lactamases and serine carbapenemases were positive, and PCR demonstrated the co-presence of blaNDM and blaKPC genes in all four strains. ERIC-PCR identified two clones circulating in the hospital. Conclusions. Infection control strategies are needed at the central hospital in Cumaná and its surrounding areas to prevent the spread of these pathogens, especially given the high levels of migration from Venezuela to other countries in South America.

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