Haemophilus quentini

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

Overview

  • Haemophilus quentini is a Gram-negative, non-spore-forming, facultatively anaerobic, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. Haemophilus quentini is probably a rare gut coloniser. (Kus2019)



  • This organism has been recovered from clinical sources and human faeces. Is a rare opportunistic pathogen. A possible gut commensal.
    • GENERAL CHARACTERISTICS (Kus2019);
    Character Response
  • H+
  • Acid from carbohydrates usually produced:
  • fructose; glucose; xylose; maltose;
  • Active enzymes:
  • alkaline phosphatase; acid phosphatase; catalase; Leu arylamidase; ornithine decarboxylase; oxidase; urease;
    • SPECIAL FEATURES (Kus2019);
    Character Response
  • ✗
  • Metabolites not produced:
  • indole;
  • ✗
  • ONPG test:
  • not active
  • ✓
  • Nitrate:
  • reduced
    • RESPONSE TO ANTIBIOTICS (Kus2019);
    Class Active Resistant
  • Penicillins:
  • amoxicillin-clavulanic acid; ampicillin; ampicillin-sulbactam; imipenem; meropenem;
  • Cephalosporins:
  • cefaclor; cefepime; cefixime;
  • Macrolides:
  • clarithromycin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • levofloxacin;
  • Heterocycles:
  • chloramphenicol; trimethoprim-sulfamethoxazole;

  • Milisavljevic, V., Garg, M., Vuletic, I., Miller, J. F., Kim, L., Cunningham, T. D., & Schröder, I. (2013). Prospective assessment of the gastroesophageal microbiome in VLBW neonates. BMC Pediatrics, 13(1), 49.

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Pasteurellales Family:  Pasteurellaceae Genus:  Haemophilus Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Morphology:  Rod
    Health:  Unknown
    Source:  clinical sources and human faeces
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Fructose:  + Glucose:  + Mannose:  neg Xylose:  + Lactose:  neg Maltose:  + Sucrose:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  + Ac-β-glcamnd:  neg α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  neg α-Glucosidase:  neg β-Glucosidase:  neg β-Glucuronidase:  neg α-Mannosidase:  neg γ-Glu transf.:  neg OrnDC:  + LeuAA:  + AlkalineP:  + AcidP:  + Esterase(C4):  neg EstLip(C8):  neg Lipase:  neg Lipase(C14):  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Indole:  neg
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    Augmentin:  Sens
    ampicillin:  Sens
    amp-sulb:  Sens
    imipenem:  Sens
    meropenem:  Sens
    cefaclor:  Sens
    cefepime:  Sens
    cefixime:  Sens
    clarithromycin:  Sens
    levofloxacin:  Sens
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  Sens
    chloramphenicol:  Sens
    SXT:  Sens

    References

    SPECIFIC REFERENCES FOR HAEMOPHILUS QUENTINI
  • Kus2019 - Identification and Characterization of 'Haemophilus quentini' Strains Causing Invasive Disease in Ontario, Canada (2016 to 2018).
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    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR HAEMOPHILUS QUENTINI
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
  • ...............................
    • Added: April 08, 2021