Carbapenem-resistant Pseudomonas aeruginosa: association with virulence genes and biofilm formation. 2017

Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
Universidade Federal de Uberlândia, Instituto de Ciências Biomédicas, Laboratório de Microbiologia, Uberlândia, MG, Brazil. Electronic address: iara_rossi@hotmail.com.

Pseudomonas aeruginosa is an opportunistic pathogen that causes frequently nosocomial infections, currently becoming more difficult to treat due to the various resistance mechanisms and different virulence factors. The purpose of this study was to determine the risk factors independently associated with the development of bacteremia by carbapenem-resistant P. aeruginosa, the frequency of virulence genes in metallo-β-lactamases producers and to evaluate their ability to produce biofilm. We conducted a case-control study in the Uberlândia Federal University - Hospital Clinic, Brazil. Polymerase Chain Reaction was performed for metallo-β-lactamases and virulence genes. Adhesion and biofilm assays were done by quantitative tests. Among the 157 strains analyzed, 73.9% were multidrug-resistant, 43.9% were resistant to carbapenems, 16.1% were phenotypically positive for metallo-β-lactamases, and of these, 10.7% were positive for blaSPM gene and 5.3% positive for blaVIM. The multivariable analysis showed that mechanical ventilation, enteral/nasogastric tubes, primary bacteremia with unknown focus, and inappropriate therapy were independent risk factors associated with bacteremia. All tested strains were characterized as strongly biofilm producers. A higher mortality was found among patients with bacteremia by carbapenem-resistant P. aeruginosa strains, associated independently with extrinsic risk factors, however it was not evident the association with the presence of virulence and metallo-β-lactamases genes.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011550 Pseudomonas aeruginosa A species of gram-negative, aerobic, rod-shaped bacteria commonly isolated from clinical specimens (wound, burn, and urinary tract infections). It is also found widely distributed in soil and water. P. aeruginosa is a major agent of nosocomial infection. Bacillus aeruginosus,Bacillus pyocyaneus,Bacterium aeruginosum,Bacterium pyocyaneum,Micrococcus pyocyaneus,Pseudomonas polycolor,Pseudomonas pyocyanea
D011552 Pseudomonas Infections Infections with bacteria of the genus PSEUDOMONAS. Infections, Pseudomonas,Pseudomonas aeruginosa Infection,Infection, Pseudomonas,Pseudomonas Infection,Pseudomonas aeruginosa Infections
D001938 Brazil A country located on the eastern coast of South America, located between Colombia and Peru, that borders the Atlantic Ocean. It is bordered on the north by Venezuela, Guyana, Suriname, and French Guiana, on the south by Uruguay, and on the west by Argentina. The capital is Brasilia.
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D001426 Bacterial Proteins Proteins found in any species of bacterium. Bacterial Gene Products,Bacterial Gene Proteins,Gene Products, Bacterial,Bacterial Gene Product,Bacterial Gene Protein,Bacterial Protein,Gene Product, Bacterial,Gene Protein, Bacterial,Gene Proteins, Bacterial,Protein, Bacterial,Proteins, Bacterial

Related Publications

Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
July 2023, The Lancet. Microbe,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
May 2018, Annals of clinical and laboratory science,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
December 2014, Microbial pathogenesis,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
December 2020, Antibiotics (Basel, Switzerland),
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
July 2022, Archives of microbiology,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
February 2022, Animals : an open access journal from MDPI,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
September 2023, The Lancet. Microbe,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
December 2016, Nature communications,
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
June 2023, Antibiotics (Basel, Switzerland),
Iara Rossi Gonçalves, and Raquel Cristina Cavalcanti Dantas, and Melina Lorraine Ferreira, and Deivid William da Fonseca Batistão, and Paulo Pinto Gontijo-Filho, and Rosineide Marques Ribas
January 2019, GMS hygiene and infection control,
Copied contents to your clipboard!