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¿Qué son las enterobacterias no fermentadoras?
Con el término de Bacilos gram-negativos no fermentadores (BNF), se designa un heterogéneo grupo de microorganismos incapaces de fermentar diversos hidratos de carbono. Muchos de ellos se comportan como oportunistas y pueden causar infecciones graves.
¿Cómo combatir la Morganella morganii?
El tratamiento está basado en sensibilidad a un anti- biótico preservando el injerto renal, desde que se conoce que Morganella morganii a muchos antibióticos beta lactamicos, una opción de tratamiento se recomienda el uso de una cefalospori- na de tercera por 10 a 14 dias2.
¿Que fermentan las enterobacterias?
Las Enterobacterias se caracterizan por ser anaerobios facultativos, con forma de varilla, negativos a la oxidasa, que fermentan la glucosa en ácido y / o dióxido de carbono. …
What is the role of Morganella morganii in histamine production?
Morganella morganii produces the enzyme histidine decarboxylase, which reacts with histidine, a free amino acid present in the muscle of some species of fin fish, including tunas, mahimahi, sardines, and mackerel. When these fish are improperly stored, spoilage from Morganella morganii may cause the decarboxylation of histidine into histamine.
What is Morganella morganii?
Morganella morganii belongs to the tribe Proteeae of the Enterobacteriaceae family. This species is considered as an unusual opportunistic pathogen that mainly causes post-operative wound and urinary tract infections.
How does Morganella produce hemolysin?
Morganella species may also produce a hemolysin, which enhances virulence by lysing erythrocytes due to the formation of hydrophilic pores in the cell wall ( 86 ). Resistance to β-lactam antibiotics in Morganella species is usually mediated by the presence of chromosomally encoded β-lactamases belonging to the AmpC β-lactamase family.
Does Morganella morganii ferment lactose?
Morganella morganii ferments glucose and mannose but not lactose. Morganella morganii is motile, facultatively anaerobic, and nonencapsulated, and it hydrolyzes urease and reduces nitrates.