Cardiobacterium valvarum

Bacteria
General | Carbohydrate O/F | Substrate utilisation | Enzymes | Metabolites | Antibiotics

Overview

  • Cardiobacterium valvarum is a Gram-negative, non-spore-forming, aerobic, rod-shaped bacterium. It has been detected in at least 1 gut microbiome compilation study or metastudy. Cardiobacterium valvarum is probably a rare gut coloniser.



  • This organism has been recovered from the blood of a patient with endocarditis. The risk classification (www.baua.de) for this organism is 2, i.e., risk of individual infection, but low risk of spread. It is an opportunistic pathogen. It's gut microbiome symbiotic status is unknown.
    • QUIRKS
  • In 1% of Europeans (unseenbio.com). Rare coloniser.
    • GENERAL CHARACTERISTICS
    Character Response
  • 🌡
  • Temperature tolerance:
  • grows at 35℃;
  • H+
  • Acid from carbohydrates usually produced:
  • glucose; mannose; sorbitol;
  • ±
  • Strain-dependent acid from carbs:
  • fructose;
  • Active enzymes:
  • oxidase;
    • SPECIAL FEATURES
    Character Response
  • ✓
  • Metabolites produced:
  • H₂S; indole;
  • ✗
  • Nitrate:
  • not reduced
    • RESPONSE TO ANTIBIOTICS
    Class Active Resistant
  • Penicillins:
  • imipenem; ticarcillin-clavulanic acid;
  • Cephalosporins:
  • cefepime; ceftazidime;
  • Quinolines:
  • ciprofloxacin;
  • Heterocycles:
  • trimethoprim-sulfamethoxazole;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Cardiobacteriales Family:  Cardiobacteriaceae Genus:  Cardiobacterium Gram stain:  neg O2 Relation.:  aerobic Spore:  No spore Morphology:  Rod
    Health:  Unknown
    Source:  the blood of a patient with endocarditis
    Mid T(℃):  35(+)
    		Aesculin:  neg Urea:  neg
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Fructose:  d Galactose:  neg Glucose:  + Mannose:  + Xylose:  neg Lactose:  neg Maltose:  neg Sucrose:  neg Mannitol:  neg Sorbitol:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  neg Urease:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  + Indole:  +
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    tica-clav:  S(0.03)
    imipenem:  S(0.032)
    cefepime:  S(0.38)
    ceftazidime:  S(0.064)
    amikacin:  Var(MIC50): 1.5), MIC90: Var(1.5
    ciprofloxacin:  S(0.016)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    SXT:  S(0.03)

    References

    SPECIFIC REFERENCES FOR CARDIOBACTERIUM VALVARUM
  • Han2004 - Endocarditis with ruptured cerebral aneurysm caused by Cardiobacterium valvarum sp. nov.
  • Han2005a - Characterization of oral strains of Cardiobacterium valvarum and emended description of the organism.
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR CARDIOBACTERIUM VALVARUM
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    • Added: October 10, 2022