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. 1997 Feb;35(2):482–485. doi: 10.1128/jcm.35.2.482-485.1997

Identification and characterization of Serpulina pilosicoli isolates recovered from the blood of critically ill patients.

D J Trott 1, N S Jensen 1, I Saint Girons 1, S L Oxberry 1, T B Stanton 1, D Lindquist 1, D J Hampson 1
PMCID: PMC229606  PMID: 9003622

Abstract

The phenotypic and genetic characteristics of spirochetes isolated from the blood of one U.S. and six French patients with severe clinical disease or impaired immunity were examined. All spirochetes were anaerobic, weakly beta-hemolytic, positive for hippurate hydrolysis, and negative for beta-glucosidase activity. Cell lengths ranged from 4 to 8 microm, and each isolate had between 8 and 12 periplasmic flagella per cell. These features were consistent with the spirochetes' being Serpulina pilosicoli, the agent of intestinal spirochetosis. All isolates were positive in a PCR assay amplifying a portion of the S. pilosicoli 16S rRNA gene, and they all grouped with fecal isolates of S. pilosicoli in multilocus enzyme electrophoresis (MLEE). The blood isolates could be differentiated from each other by MLEE, although the U.S. and two French isolates were closely related. Apparently S. pilosicoli may translocate from the large intestine to establish spirochetemia. The clinical significance of this finding remains uncertain and requires further investigation.

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Selected References

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