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Sepsis by Chromobacterium violaceum: first case report from Colombia 55
Díaz Pérez,Julio Alexander; García,Jorge; Rodriguez Villamizar,Laura Andrea.
Chromobacterium violaceum is found in tropical and subtropical regions; it is the only Chromobacterium species pathogenic for humans. Due to its rare presentation, physicians often ignore the importance of this pathogen. We report a fulminant fatal case of bacteremia in a 38-year-old Colombian man. The clinical manifestations were fever, thoracic pain, respiratory failure and death. His condition, from the beginning of clinical diagnosis, went into continuous deterioration, till his death, within a few days after the symptoms began. Two hemocultures isolated C. violaceum. We conclude that doctors should consider this differential diagnosis in patients with systemic inflammatory response syndrome, with continuous deterioration.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Chromobacterium violaceum; Bacteremia.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000400016
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Composition, anti-quorum sensing and antimicrobial activity of essential oils from Lippia alba 58
Olivero-Verbel,Jesus; Barreto-Maya,Ana; Bertel-Sevilla,Angela; Stashenko,Elena E..
Many Gram-negative pathogens have the ability to produce N-acylhomoserine lactones (AHLs) as signal molecules for quorum sensing (QS). This cell-cell communication system allows them to coordinate gene expression and regulate virulence. Strategies to inhibit QS are promising for the control of infectious diseases or antibiotic resistant bacterial pathogens. The aim of the present study was to evaluate the anti-quorum sensing (anti-QS) and antibacterial potential of five essential oils isolated from Lippia alba on the Tn-5 mutant of Chromobacterium violaceum CV026, and on the growth of the gram-positive bacteria S. aureus ATCC 25923. The anti-QS activity was detected through the inhibition of the QS-controlled violacein pigment production by the sensor...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Violacein; Chromobacterium violaceum; Limonene; Carvone; Geranial; Neral.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300001
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