Profiling of bacterial flora in gastric biopsies from patients with Helicobacter pylori-associated gastritis and histologically normal control individuals by temperature gradient gel electrophoresis and 16S rDNA sequence analysis.
The aim of this study was to establish bacterial profiles in gastric biopsy specimens from patients with Helicobacter pylori-associated gastritis by means of temporal temperature gradient gel electrophoresis (TTGE) of PCR-amplified 16S rDNA fragments. Specimens from eight patients with asymptomatic gastritis and five histologically normal controls revealed a Helicobacter-specific band in the TTGE profile with increased amounts of Helicobacter-specific DNA in the biopsies from most of the gastritis patients. DNA from other genera including Enterococcus, Pseudomonas, Streptococcus, Staphylococcus and Stomatococcus was also found in the stomach. In the absence of gastric inflammation, Helicobacter spp. appeared to be part of a complex, presumably indigenous microbial flora found in the biopsy specimens from the stomach.
Monstein
Hans-Jürg
HJ
Tiveljung
A
A
Kraft
C H
CH
Borch
K
K
Division of Clinical Microbiology, Molecular Biology Laboratory-LMÖ and *Surgery, Faculty of Health Sciences, University Hospital, S-581 85 Linköping, Sweden.
Jonasson
J
J
D001706:Biopsy; D003001:Cloning, Molecular; D004275:DNA, Ribosomal / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel / Q000379:methods; D005756:Gastritis / Q000382:microbiology*; D016481:Helicobacter Infections / Q000382:microbiology*; D016480:Helicobacter pylori / Q000235:genetics*; D006801:Humans; D012336:RNA, Ribosomal, 16S / Q000235:genetics*; D017422:Sequence Analysis, DNA
D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S