Description of 'Candidatus Helicobacter heilmannii' based on DNA sequence analysis of 16S rRNA and urease genes

Jani L. O'Rourke, Jay V Solnick, Brett A. Neilan, Karin Seidel, Robert Hayter, Lori M. Hansen, Adrian Lee

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

While Helicobacter pylori is accepted as the major bacterial agent of gastric disease in humans, some patients and many animals are infected with a larger, tightly helical-shaped bacterium previously referred to as 'Helicobacter heilmannii' or 'Gastrospirillum hominis'. Taxonomic classification of these bacteria has been hampered by the inability to cultivate them in vitro and by the inadequate discriminatory power of 16S rRNA gene sequence analysis. This study describes the detection and phylogenetic analysis of 26 different gastrospirillum isolates from humans and animals, which incorporates sequence data based on the 16S rRNA and urease genes. Fifteen gastrospirilla detected in humans, primates and pigs clustered with 'Candidatus Helicobacter suis', thus expanding the host range for this organism. By comparison, based on 16S rRNA data, the remaining 11 gastrospirilla could not be differentiated from Helicobacter felis, Helicobacter bizzozenonii and Helicobacter salomonis. However, urease gene sequence analysis allowed for the discrimination of this latter group into four discrete clusters, three of which contained the above recognized species. The fourth cluster contained isolates from human and feline hosts, and should provisionally be considered a unique bacterial species, for which the name 'Candidatus Helicobacter heilmannii' is proposed.

Original languageEnglish (US)
Pages (from-to)2203-2211
Number of pages9
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume54
Issue number6
DOIs
StatePublished - Nov 2004

Fingerprint

Helicobacter heilmannii
Helicobacter
Urease
urease
DNA Sequence Analysis
rRNA Genes
sequence analysis
ribosomal RNA
nucleotide sequences
DNA
gene
Helicobacter salomonis
Helicobacter felis
bacterium
genes
animal
host range
Sequence Analysis
pig
primate

ASJC Scopus subject areas

  • Microbiology
  • Applied Microbiology and Biotechnology
  • Ecology, Evolution, Behavior and Systematics
  • Immunology

Cite this

Description of 'Candidatus Helicobacter heilmannii' based on DNA sequence analysis of 16S rRNA and urease genes. / O'Rourke, Jani L.; Solnick, Jay V; Neilan, Brett A.; Seidel, Karin; Hayter, Robert; Hansen, Lori M.; Lee, Adrian.

In: International Journal of Systematic and Evolutionary Microbiology, Vol. 54, No. 6, 11.2004, p. 2203-2211.

Research output: Contribution to journalArticle

O'Rourke, Jani L. ; Solnick, Jay V ; Neilan, Brett A. ; Seidel, Karin ; Hayter, Robert ; Hansen, Lori M. ; Lee, Adrian. / Description of 'Candidatus Helicobacter heilmannii' based on DNA sequence analysis of 16S rRNA and urease genes. In: International Journal of Systematic and Evolutionary Microbiology. 2004 ; Vol. 54, No. 6. pp. 2203-2211.
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