Helicobacter canadensis

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

Overview

  • Helicobacter canadensis is a Gram-negative, non-spore-forming, microaerophilic, motile, helical-shaped bacterium. It has been detected in at least 5 gut microbiome compilation studies or metastudies. Helicobacter canadensis is likely to be transient and not a long-term gut coloniser. (Fox2000; On2005Bergey; On2005Bergey)



  • This organism has been recovered from human faeces (diarrhoea). The risk classification (www.baua.de) for this organism is 2, i.e., risk of individual infection, but low risk of spread (notes: human and animal pathogen). It is an opportunistic pathogen. Likely to be transient and not a long-term gut commensal. Robust growth can have negative consequences for gut health.
    • GENERAL CHARACTERISTICS (Fox2000); (On2005Bergey); (On2005Bergey);
    Character Response
  • 🌡
  • Temperature tolerance:
  • grows at 42℃; Grows optimally at 37℃.
  • Active enzymes:
  • catalase; oxidase;
    • SPECIAL FEATURES (On2005Bergey);
    Character Response
  • ✗
  • Methyl red test:
  • not active
  • ✗
  • VP test:
  • not active
  • ±
  • Nitrate:
  • strain dependent
  • ±
  • NO3➔NO2:
  • strain dependent
  • ✗
  • Pigments:
  • not produced
    • RESPONSE TO ANTIBIOTICS (Fox2000); (On2005Bergey); (On2005Bergey);
    Class Active Resistant
  • Cephalosporins:
  • cephalothin;
  • Quinolines:
  • nalidixic-acid;
  • NOTES

    Media containing 1% glycine supports growth.

  • Fox, J. G., Chien, C. C., Dewhirst, F. E., Paster, B. J., Shen, Z., Melito, P. L., Woodward, D. L., & Rodgers, F. G. (2000). Helicobacter canadensis sp. nov. isolated from humans with diarrhea as an example of an emerging pathogen. Journal of Clinical Microbiology, 38(7), 2546–2549.

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Epsilonproteobacteria Order:  Campylobacterales Family:  Helicobacteraceae Genus:  Helicobacter Gram stain:  neg O2 Relation.:  microaerophilic Spore:  No spore Motility:  Swimming Morphology:  Helical Pigment:  neg
    Health:   Negative
    Source:  human faeces (diarrhoea)
    Opt. T:  37℃
    High T(℃):  42(+)
    		Urea:  neg Gelatin:  neg Starch:  neg Casein:  neg Tyrosine:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  neg γ-Glu transf.:  neg AlkalineP:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Pigment:  neg
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    cephalothin:  R(30)
    nalidixic-acid:  R(30)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)

    References

    SPECIFIC REFERENCES FOR HELICOBACTER CANADENSIS
  • Fox2000 - Helicobacter canadensis sp. nov. Isolated from Humans with Diarrhea as an Example of an Emerging Pathogen.
  • On2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Alpha-, Beta-, Delta-, and Epsilonproteobacteria Part C. Family Helicobacteraceae, Genus I. Helicobacter
  • On2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Alpha-, Beta-, Delta-, and Epsilonproteobacteria Part C. Family Helicobacteraceae, Genus I. Helicobacter
  • Li2012 - Molecular-phylogenetic characterization of the microbiota in ulcerated and non-ulcerated regions in the patients with Crohn's disease
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR HELICOBACTER CANADENSIS
  • Forster2019 - A human gut bacterial genome and culture collection for improved metagenomic analyses.
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • New2022 - Collective effects of human genomic variation on microbiome function.
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
  • Tyakht2013 - Human gut microbiota community structures in urban and rural populations in Russia.
  • ...............................
    • GENERAL REFERENCES FOR HELICOBACTER CANADENSIS
  • CCUG - Culture Collection University of Gothenburg - Entire Collection
    • Added: April 08, 2021