Virulence and antimicrobial susceptibility of clinical and environmental strains of Aeromonas spp. from northeastern Brazil

被引：8

作者：

Collares Maia Castelo-Branco, Debora de Souza ^{[1
]}

de Melo Guedes, Glaucia Morgana ^{[1
]}

Nogueira Brilhante, Raimunda Samia ^{[1
]}

Gadelha Rocha, Marcos Fabio ^{[1
,2
]}

Costa Sidrim, Jose Julio ^{[1
]}

Bezerra Moreira, Jose Luciano ^{[1
]}

Cordeiro, Rossana de Aguiar ^{[1
]}

Sales, Jamille Alencar ^{[2
]}

Riello, Giovanna Barbosa ^{[1
]}

de Alencar, Lucas Pereira ^{[2
]}

Neto Paiva, Manoel de Araujo ^{[2
]}

Vasconcelos, David Caldas ^{[1
]}

Bezerra de Menezes, Isis Sousa ^{[1
]}

de Ponte, Yago Brito ^{[2
]}

de Souza Sampaio, Celia Maria ^{[2
]}

Monteiro, Andre Jalles ^{[3
]}

Pinheiro Gomes Bandeira, Tereza de Jesus ^{[1
,4
,5
]}

机构：

[1] Univ Fed Ceara, Postgrad Program Med Microbiol, Dept Pathol & Legal Med, Fortaleza, Ceara, Brazil

[2] Univ Estadual Ceara, Postgrad Program Vet Sci, Sch Vet Med, Fortaleza, Ceara, Brazil

[3] Univ Fed Ceara, Dept Stat & Appl Math, Fortaleza, Ceara, Brazil

[4] Christus Coll Unichristus, Sch Med, Fortaleza, Ceara, Brazil

[5] Diagnost Amer SA DASA, Fortaleza, Ceara, Brazil

来源：

CANADIAN JOURNAL OF MICROBIOLOGY | 2015年 / 61卷 / 08期

关键词：

Aeromonas spp; human infections; environments; virulence genes; antimicrobial resistance; ANTIFUNGAL SUSCEPTIBILITY; HYDROPHILA; DIVERSITY; SOBRIA; YEASTS; GENES; FISH;

D O I：

10.1139/cjm-2015-0107

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The aims of the present study were to isolate and identify clinical and environmental strains of Aeromonas spp. by means of biochemical tests and the automated method VITEK 2 and to investigate the presence of the virulence genes cytotoxic enterotoxin (act), hemolysin (asa-1), and type III secretion system (ascV), and also the in vitro antimicrobial susceptibility of the strains. From the clinical isolates, 19 Aeromonas hydrophila, 3 Aeromonas veronii bv. sobria, and 1 Aeromonas caviae were identified, while from the environmental strains, 11 A. hydrophila, 22 A. veronii bv. sobria, 1 A. veronii bv. veronii, and 1 A. caviae were recovered. The gene act was detected in 69.5% of clinical isolates, asa-1 in 8.6%, and ascV in 34.7%. In the environmental strains, the detection rates were 51.4%, 45.7%, and 54.2% for the genes act, asa-1, and ascV, respectively. Resistance to amoxicillin-clavulanate and piperacillin-tazobactam was observed in 15 and 3 clinical strains, respectively, and resistance to ceftazidime, meropenem, imipenem, ciprofloxacin, and trimethoprim-sulfamethoxazole was observed in 1 strain for each drug. Resistance to amoxicillin-clavulanate and piperacillin-tazobactam was detected in 17 and 1 environmental strain, respectively. Higher resistance percentages were observed in clinical strains, but environmental strains also showed this phenomenon and presented a higher detection rate of virulence genes. Thus, it is important to monitor the antimicrobial susceptibility and pathogenic potential of the environmental isolates.

引用

页码：597 / 601

页数：5

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