Navegando por Assunto "Klebsiella pneumoniae"

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Acesso aberto (Open Access)
Caracterização molecular de Klebsiella pneumoniae produtoras de ß-lactamases de espectro ampliado e Carbapenemase tipo KPC isoladas de pacientes hospitalizados em Belém, estado do Pará
(Universidade Federal do Pará, 2016-12-13) MARQUES, Patrícia Bentes; LOUREIRO, Edvaldo Carlos Brito; http://lattes.cnpq.br/2685418720563351
The antimicrobial resistance in Enterobacteriaceae is increasing worldwide. The K. pneumoniae constitute an important group of human patogen, causing of hospital and communitarian infections. In these bacteria, the production of extended spectrum beta-lactamases (ESBL) is one of the main mechanisms of resistance the antimicrobials, responsible for the imperfection of the therapy against infections for gram-negative bacilli. This work aimed to do the molecular characterization of the K. pneumoniae producing ESBL and KPC about antimicrobial resistence in pacients from Belém-PA. A total of 124 K. pneumoniae isolates were collected from public hospital from Belém-PA and susceptibility test was performed to detect its susceptibility patterns antibiotics. Phenotypic tests for extended-spectrum beta-lactamases (ESBLs) and carbapenemase-producing Klebsiella pneumoniae (KPC) producing strains were performed to detect the resistance phenotype of the isolates. Then PCR amplification and sequencing analysis were performed for the drug resistance determinants genes. The results showed that 83% strains harbored bla CTX-M gene, 85,5% carried bla SHV , 83% carried bla TEM and 5% carried bla KPC. The most frequent gene ESBL detected was bla CTX-M-71, which was observed in 60% of isolates. Other ESBL genes were bla SHV-38 (5% of isolates), bla SHV-100 (5% of isolates) and bla SHV-12 (3,5% of isolates). O gene bla KPC-2 was detected in 100% of isolates.These enterobacterias showed multidrug resistance phenotypes with high levels for quinolones and aminoglycosides. Associations between genotypes and antibiotic resistance were observed.The presence of multidrug resistant micro-organisms in hospitals, reinforces the need for measures for rapid containment of possibles infections caused by these pathogens.
Acesso aberto (Open Access)
Infecções da corrente sanguínea por Klebsiella spp. produtora de Betalactamase de espectro expandido em unidades de terapia intensiva neonatal de hospital de ensino no estado do Pará: fatores de risco para letalidade
(Universidade Federal do Pará, 2010) ESPÍNOLA, Débora Consuelo Santos Macêdo; CARNEIRO, Irna Carla do Rosário Souza; http://lattes.cnpq.br/4389330944043163; SOUSA, Rita Catarina Medeiros; http://lattes.cnpq.br/3560941703812539
Extended-spectrum beta-lactamase-producing Klebsiella spp. has emerged as a common problem globally. However, data relative to the clinical and epidemiologic characteristics outcome in infected newborns due to for this ESBL-producing gram-negative bacterium of ESBL are still they are limited. A retrospective descriptive study that examined risk factors associated to letality for examined the analytical epidemiology of ESBL-producing Klebsiella spp. bloodstream infections (BSI) in the NICU of a teaching hospital in the state of Pará. A sample of 27 neonates were studied, most of the neonates were premature (77.8%), with mean gestational age 34 weeks, from 27 to 41 weeks. The BSI episodes were more common with infants weighing ≤ 1500 g (40.7%), and 14.8% below 1000g. The mean length of hospital stay was 40.51 days ranging from 5 to 101 days (SD = ± 29.61). The average time of onset of BSI was 12.2 days ranging from 5 to 24 days after the date of admission. Most infections were caused by bacteria of the species Klebsiella pneumoniae (52%). The overall mortality was found 66.7%, as for mortality related to BSI (up to 14 days of bacteremia), the fatality rate was 51.8% (14/27). The central vascular catheter (CVC) was present in about 60% of the RN and all the patients presented under mechanics ventilation at the moment of the episode of the BSI. Regarding the variables studied until the 14th day after the bacteremia episode, only the inappropriate treatment presented significance statistics (P < 0.0017), since all the newborn that had received inappropriate treatment had an unfavorable evolution. The nosocomial BSI due to caused ESBL-producing Klebsiella if have become a common problem in premature neonates RN with high raised mortality in those who that they received inappropriate antimicrobial treatment.