SciELO - Scientific Electronic Library Online

 
vol.44 número3Comparación de la eficiencia de extracción de ácidos nucleicos utilizando distintos kits comerciales y empleando la qPCR: Efecto de las sustancias inhibidorasObtención y evaluación de un derivado proteico purificado de una cepa argentina de Mycobacterium avium subsp. paratuberculosis índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

Compartilhar


Revista argentina de microbiología

versão impressa ISSN 0325-7541

Resumo

GARCIA, Carlos A. et al. Siderophores of Stenotrophomonas maltophilia: detection and determination of their chemical nature. Rev. argent. microbiol. [online]. 2012, vol.44, n.3, pp.150-154. ISSN 0325-7541.

Stenotrophomonas maltophilia is an emerging nosocomial pathogen. Despite the broad spectrum of syndromes associated with S. maltophilia infections, little is known about its virulence factors, including siderophore production. The aims of this work were to detect S. maltophilia siderophores and to determine their chemical nature. We studied 31 S. maltophilia isolates from device-associated infections, recovered over the period 2006-2011 at Hospital de Clínicas José de San Martin, Buenos Aires, Argentina, and the strain K279a, whose genome has been fully sequenced. The production of siderophores was screened by the chrome azurol S (CAS) agar assay, previously modified to detect siderophores in this species. When grown on modified CAS agar plates, all the clinical isolates and K279a were CAS-positive for siderophore production. In order to determine the chemical nature of siderophores, the Csáky (hydroxamate-type) and Arnow (catechol-type) assays were used. All S. maltophilia isolates produced catechol-type siderophores, but hydroxamate-type siderophores were not detected.

Palavras-chave : Stenotrophomonas maltophilia; Siderophores; CAS agar; Csáky; Arnow.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons