| Texto completo | |
| Autor(es): Mostrar menos - |
Calarga, Aline Parolin
;
Pardini Gontijo, Marco Tulio
;
Paula de Almeida, Luiz Gonzaga
;
Ribeiro de Vasconcelos, Ana Tereza
;
Nascimento, Leandro Costa
;
Cotrim de Moraes Barbosa, Taise Marongio
;
de Carvalho Perri, Thalita Mara
;
dos Santos, Silvia Regina
;
Tiba-Casas, Monique Ribeiro
;
Lemes Marques, Eneida Goncalves
;
Ferreira, Cleide Marques
;
Brocchi, Marcelo
Número total de Autores: 12
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Brazilian Journal of Microbiology; v. 53, n. 3, p. 14-pg., 2022-04-21. |
| Resumo | |
Salmonella enterica causes Salmonellosis, an important infection in humans and other animals. The number of multidrug-resistant (MDR) phenotypes associated with Salmonella spp. isolates is increasing worldwide, causing public health concern. Here, we aim to characterize the antimicrobial-resistant phenotype of 789 non-typhoidal S. enterica strains isolated from human infections in the state of Sao Paulo, Brazil, along 20 years (2000-2019). Among the non-susceptible isolates, 31.55, 14.06, and 13.18% were resistant to aminoglycosides, tetracycline, and beta-lactams, respectively. Moreover, 68 and 11 isolates were considered MDR and Extended Spectrum beta-Lactamase (ESBL) producers, respectively, whereas one isolate was colistin-resistant. We selected four strains to obtain a draft of the Genome Sequence; one S. Infantis (ST32), one S. Enteritidis (ST11), one S. I 4,[5],12:i:- (ST19), and one S. Typhimurium (ST313). Among them, three presented at least one of the following antimicrobial resistance genes (AMR) linked to mobile DNA: bla(TEM-1B), dfrA1, tetA, sul1, floR, aac(6')-laa, and qnrE1. This is the first description of the plasmid-mediated quinolone resistance (PMQR) gene qnrE1 in a clinical isolate of S. I 4,[5],12:i:-. The S. Typhimurium is a colistin-resistant isolate, but did not harbor mcr genes, but it presented mutations within the mgrB, pmrB, and pmrC regions that might be linked to the colistin-resistant phenotype. The virulence pattern of the four isolates resembled the virulence pattern of the highly pathogenic S. Typhimurium UK-1 reference strain in assays involving the in vivo Galleria mellonella model. In conclusion, most isolates studied here are susceptible, but a small percentage present an MDR or ESBL-producer and pathogenic phenotype. Sequence analyses revealed plasmid-encoded AMR genes, such as beta-lactam and fluoroquinolone resistance genes, indicating that these characteristics can be potentially disseminated among other bacterial strains. (AU) | |
| Processo FAPESP: | 17/10051-2 - Potencial biotecnológico e caracterização fenotípica e molecular de mutantes de Salmonella enterica |
| Beneficiário: | Marcelo Brocchi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 14/13412-8 - Salmonella enterica: importância de NAPS na patogenicidade e atenuação da virulência |
| Beneficiário: | Marcelo Brocchi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |