title: Corynebacterium aquaticum septicemia. Characterization of the microorganisms.
abstract: An 85-year-old woman with the diagnosis of diabetic ketoacidosis developed septicemia during hospitalization. Cultures of the patient's blood revealed the presence of Gram-variable coccobacilli, later identified as Corynebacterium aquaticum. The microorganisms grew aerobically on blood agar plates after incubation overnight. The colonies were convex, non-hemolytic and slightly yellow-pigmented. No growth was observed on MacConkey and endo agar plates. The organisms were catalase-positive, oxidase-negative, motile, and oxidized glucose and mannitol. The morphologic and biochemical properties of Corynebacterium aquaticum should be considered for separation from related organisms such as Listeria monocytogenes, Corynebacterium species and oxidative Gram-negative rods that do not grow on MacConkey medium (Flavobacterium spp.).
mesh_terms: D000368:Aged; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D003352:Corynebacterium / Q000302:isolation & purification* / Q000378:metabolism; D003354:Corynebacterium Infections / Q000382:microbiology*; D005260:Female; D005417:Flavobacterium / Q000302:isolation & purification; D006801:Humans; D008089:Listeria monocytogenes / Q000302:isolation & purification; D018805:Sepsis / Q000382:microbiology*
chemical_list: D000900:Anti-Bacterial Agents