1887

Abstract

Sequences of known 16S rRNA genes, derived from sequence analysis of cloned 16S rDNA, were used to design a specific oligonucleotide probe targeting spirochaetes of lineages 2 and 3. The probe was used with fluorescent hybridization to study the involvement of these organisms in human intestinal spirochaetosis. Seventeen human colonic biopsies from Norway and Denmark with intestinal spirochaetosis caused by -like organisms different from the type strain of (lineage 1) were examined. Application of the probe gave a positive signal in two Norwegian biopsies, whereas the 15 other biopsies were hybridization-negative. The positive reaction visualized the spirochaetes as a fluorescent, 3–5 μm-high fringe on the surface epithelium, extending into the crypts. The study verified the presence of lineages 2 and 3 and identified the bacteria as an aetiological agent of human intestinal spirochaetosis.

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2004-04-01
2019-11-22
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