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Université de Fribourg

Occurrence of NDM-1-producing Morganella morganii and Proteus mirabilis in a single patient in Portugal: probable in vivo transfer by conjugation

Aires-de-Sousa, Marta ; Ortiz de la Rosa, José Manuel ; Goncalves, Maria Luísa ; Costa, Augusto ; Nordmann, Patrice ; Poirel, Laurent

In: Journal of Antimicrobial Chemotherapy, 2020, vol. 75, no. 4, p. 903–906

To decipher the genetics of acquisition of carbapenemase-encoding genes identified in two carbapenem-resistant Enterobacteriaceae recovered from a single patient in Portugal.Methods: Carbapenemase genes were searched by PCR assays and mating-out assays were performed to further characterize the plasmid support of the carbapenemase genes. Genetic characterization of the plasmid supports was...

Université de Fribourg

Intestinal carriage of extended-spectrum beta-lactamase–producing Enterobacteriaceae at admission in a Portuguese hospital

Aires-de-Sousa, Marta ; Lopes, Elizeth ; Gonçalves, Maria Luísa ; Pereira, Ana Luísa ; Machado e Costa, Augusto ; Lencastre, Hermínia de ; Poirel, Laurent

In: European Journal of Clinical Microbiology & Infectious Diseases, 2019, p. -

To evaluate the prevalence of extended-spectrum β-lactamase (ESBL)–producing Enterobacteriaceae fecal carriers at admission in a Portuguese hospital and to determine the epidemiology and antimicrobial resistance patterns of ESBL-producing isolates. During a 2-month period, rectal swabs were collected at hospital admission from 151 at-risk patients. In addition, 48 rectal swabs were...

Université de Fribourg

High colonization rate and heterogeneity of ESBL- and carbapenemase-producing enterobacteriaceae isolated from gull feces in Lisbon, Portugal

Aires-de-Sousa, Marta ; Fournier, Claudine ; Lopes, Elizeth ; Lencastre, Hermínia de ; Nordmann, Patrice ; Poirel, Laurent

In: Microorganisms, 2020, vol. 8, no. 10, p. 1487

In order to evaluate whether seagulls living on the Lisbon coastline, Portugal, might be colonized and consequently represent potential spreaders of multidrug-resistant bacteria, a total of 88 gull fecal samples were screened for detection of extended- spectrum β-lactamase (ESBL)- or carbapenemase-producing Enterobacteriaceae for methicillin-resistant Staphylococcus aureus (MRSA) and for...

Université de Fribourg

Epidemiology of Carbapenemase-Producing Klebsiella pneumoniae in a Hospital, Portugal

Aires-de-Sousa, Marta ; Ortiz de la Rosa, José Manuel ; Gonçalves, Maria Luísa ; Pereira, Ana Luísa ; Nordmann, Patrice ; Poirel, Laurent

In: Emerging Infectious Diseases, 2019, vol. 25, no. 9, p. 1632–1638

We aimed to provide updated epidemiologic data on carbapenem-resistant Klebsiella pneumoniae in Portugal by characterizing all isolates (N = 46) recovered during 2013– 2018 in a 123-bed hospital in Lisbon. We identified blaKPC-3 (n = 36), blaOXA-181 (n = 9), and blaGES-5 (n = 8) carbapenemase genes and observed co-occurrence of blaKPC-3 and blaGES-5 in 7 isolates. A single GES-5–producing...

Université de Fribourg

Cooccurrence of NDM-1, ESBL, RmtC, AAC(6′)-Ib, and QnrB in Clonally Related Klebsiella pneumoniae Isolates Together with Coexistence of CMY-4 and AAC(6′)-Ib in Enterobacter cloacae Isolates from Saudi Arabia

Al-Agamy, Mohamed H. ; El-Mahdy, Taghrid S. ; Radwan, Hesham H. ; Poirel, Laurent

In: BioMed Research International, 2019, p. -

The aim of this study was to investigate the mechanisms responsible for resistance to antimicrobials in a collection of enterobacterial isolates recovered from two hospitals in Saudi Arabia. A total of six strains isolated from different patients showing high resistance to carbapenems was recovered in 2015 from two different hospitals, with four being Klebsiella pneumoniae and two...

Université de Fribourg

Non-typhoidal Salmonella blood stream infection in Kuwait: Clinical and microbiological characteristics

Albert, M. John ; Bulach, Dieter ; Alfouzan, Wadha ; Izumiya, Hidemasa ; Carter, Glen ; Alobaid, Khaled ; Alatar, Fatemah ; Sheikh, Abdul Rashid ; Poirel, Laurent

In: PLOS Neglected Tropical Diseases, 2019, vol. 13, no. 4, p. e0007293

Salmonella organisms are classified into typhoidal Salmonella (causing enteric fever) and non-typhoidal Salmonella (NTS) (causing infections other than enteric fever). Apart from causing other infections, NTS causes blood-stream infection (bacteremia and septicemia). NTS blood stream infection (NTS-BI) is considered to be an emerging and neglected tropical disease in Africa. It causes a very...

Université de Fribourg

Antimicrobial activity of octenidine against multidrug-resistant Gram-negative pathogens

Alvarez-Marin, R. ; Aires-de-Sousa, Marta ; Nordmann, Patrice ; Kieffer, Nicolas ; Poirel, Laurent

In: European Journal of Clinical Microbiology & Infectious Diseases, 2017, p. 1–5

Multidrug-resistant (MR) Gram-negative (GN) pathogens pose a major and growing threat for healthcare systems, as therapy of infections is often limited due to the lack of available systemic antibiotics. Well-tolerated antiseptics, such as octenidine dihydrochloride (OCT), may be a very useful tool in infection control to reduce the dissemination of MRGN. This study aimed to investigate the...

Université de Fribourg

New Delhi metallo-β-lactamase-producing Acinetobacter baumannii : a novel paradigm for spreading antibiotic resistance genes

Bonnin, Rémy A. ; Poirel, Laurent ; Nordmann, Patrice

In: Future Microbiology, 2013, vol. 9, no. 1, p. 33–41

The impact of carbapenemase production among clinically significant Gram-negative rods is becoming a major medical issue. To date, Acinetobacter baumannii has been considered as a final recipient of carbapenemase genes (imipenemase, Verona metallo-β-lactamase, Guiana extended-spectrum β-lactamase and Klebsiella pneumonia carbapenemase types) from Enterobacteriaceae and ...

Université de Fribourg

Carbapenemase-producing organisms: a global scourge

Bonomo, Robert A ; Burd, Eileen M ; Conly, John ; Limbago, Brandi M ; Poirel, Laurent ; Segre, Julie A ; Westblade, Lars F

In: Clinical Infectious Diseases, 2018, vol. 66, no. 8, p. 1290–1297

The dramatic increase in the prevalence and clinical impact of infections caused by bacteria producing carbapenemases is a global health concern. Carbapenemase production is especially problematic when encountered in members of the family Enterobacteriaceae. Due to their ability to readily spread and colonize patients in healthcare environments, preventing the transmission of these organisms...