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Medeiros PHQS, Lima AÂM, Guedes MM, Havt A, Bona MD, Rey LC, Soares AM, Guerrant RL, Weigl BH, Lima IFN. Molecular characterization of virulence and antimicrobial resistance profile of Shigella species isolated from children with moderate to severe diarrhea in northeastern Brazil. Diagn Microbiol Infect Dis 2017; 90:198-205. [PMID: 29217418 DOI: 10.1016/j.diagmicrobio.2017.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 10/08/2017] [Accepted: 11/01/2017] [Indexed: 12/28/2022]
Abstract
Molecular characterization of virulence and antimicrobial resistance profiles were determined for Shigella species isolated from children with diarrhea in Fortaleza, Brazil. Fecal specimens were collected along with socioeconomic and clinical data from children with moderate to severe diarrhea requiring emergency care. Shigella spp. were isolated by standard microbiological techniques, and we developed 4 multiplex polymerase chain reaction assays to detect 16 virulence-related genes (VRGs). Antimicrobial susceptibility tests were performed using disk diffusion assays. S. flexneri and S. sonnei were the predominant serogroups. S. flexneri was associated with low monthly incomes; more severe disease; higher number of VRGs; and presence of pic, set, and sepA genes. The SepA gene was associated with more intense abdominal pain. S. flexneri was correlated with resistance to ampicillin and chloramphenicol, whereas S. sonnei was associated with resistance to azithromycin. Strains harboring higher numbers of VRGs were associated with resistance to more antimicrobials. We highlight the correlation between presence of S. flexneri and sepA, and increased virulence and suggest a link to socioeconomic change in northeastern Brazil. Additionally, antimicrobial resistance was associated with serogroup specificity in Shigella spp. and increased bacterial VRGs.
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Affiliation(s)
| | - Aldo Ângelo Moreira Lima
- Institute of Biomedicine for Brazilian Semi-Arid (IBISAB), Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil; Center for Global Health, Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, USA
| | - Marjorie Moreira Guedes
- Institute of Biomedicine for Brazilian Semi-Arid (IBISAB), Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Alexandre Havt
- Institute of Biomedicine for Brazilian Semi-Arid (IBISAB), Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Mariana Duarte Bona
- Institute of Biomedicine for Brazilian Semi-Arid (IBISAB), Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Luís Carlos Rey
- Department of Mother and Child Health, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Alberto Melo Soares
- Institute of Biomedicine for Brazilian Semi-Arid (IBISAB), Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil
| | - Richard Littleton Guerrant
- Center for Global Health, Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, USA
| | - Bernhard H Weigl
- Program for Appropriate Technology in Health (PATH), Seattle, WA, USA
| | - Ila Fernanda Nunes Lima
- Institute of Biomedicine for Brazilian Semi-Arid (IBISAB), Department of Physiology and Pharmacology, Federal University of Ceara, Fortaleza, CE, Brazil
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Lindsay BR, Chakraborty S, Harro C, Li S, Nataro JP, Sommerfelt H, Sack DA, Colin Stine O. Quantitative PCR and culture evaluation for enterotoxigenicEscherichia coli(ETEC) associated diarrhea in volunteers. FEMS Microbiol Lett 2014; 352:25-31. [DOI: 10.1111/1574-6968.12362] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 12/12/2013] [Accepted: 12/13/2013] [Indexed: 11/26/2022] Open
Affiliation(s)
- Brianna R. Lindsay
- Department of Epidemiology and Public Health; University of Maryland, School of Medicine; Baltimore MD USA
| | - Subhra Chakraborty
- Department of International Health; Johns Hopkins Bloomberg School of Public Health; Baltimore MD USA
| | - Clayton Harro
- Department of International Health; Johns Hopkins Bloomberg School of Public Health; Baltimore MD USA
| | - Shan Li
- Department of Epidemiology and Public Health; University of Maryland, School of Medicine; Baltimore MD USA
| | - James P. Nataro
- Department of Pediatrics; University of Virginia; Charlottesville VA USA
| | - Halvor Sommerfelt
- Centre for International Health; University of Bergen; Bergen Norway
- Department of International Public Health; Norwegian Institute of Public Health; Oslo Norway
| | - David A. Sack
- Department of International Health; Johns Hopkins Bloomberg School of Public Health; Baltimore MD USA
| | - Oscar Colin Stine
- Department of Epidemiology and Public Health; University of Maryland, School of Medicine; Baltimore MD USA
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