Tag: Listeriosis

Virulence factors, Pathogenesis and Clinical manifestations of Listeria monocytogenes 4.55/5 (11)

Listeria monocytogenes

Virulence factors of Listeria monocytogenes 1. Adhesion proteins (Ami, Fbp A, flagellin) Mediate bacterial binding to host cell that contribute to virulence. 2. Listeriolysin O A hemolytic and cytotoxic toxin that allows for survival within phagocytes. 3. Internalin Cell surface protein that induces phagocytosis. 4. Act A Induces actin polymerization on the surface of host cells, […]

Laboratory diagnosis of Listeriosis caused by Listeria monocytogenes 4.04/5 (23)

Laboratory diagnosis of Listeriosis caused by Listeria monocytogenes

Laboratory diagnosis of Listeriosis caused by Listeria monocytogenes Specimens: Cerebrospinal fluid (CSF), Blood Microscopy Gram-stain preparations of cerebrospinal fluid (CSF) typically show no organisms because the bacteria are generally present in concentrations below the limit of detection (e.g., 10ˆ4 bacteria per milliliter CSF or less). If the Gram stain shows organisms, they are intracellular and extracellular […]

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