Abstract:
:Previously-developed PCR protocols specific for the 16S rRNA gene of the intestinal spirochaetes Brachyspira aalborgi and Brachyspira pilosicoli were adapted for the detection of these species in human faeces, following DNA extraction and purification using mini-prep columns. The limits of detection in seeded faeces for B. aalborgi and B. pilosicoli respectively were 2x10(2) and 7x10(3) cells per PCR reaction, equivalent to 5x10(4) and 1x10(5) cells per g of faeces. The PCR techniques were applied to faecal samples from two patients with histological evidence of intestinal spirochaetosis. In the first patient, in whom B. aalborgi had been identified by 16S rDNA PCR from colonic biopsies, a positive amplification for B. aalborgi only was obtained from the faeces. The organism could not be isolated from these faeces. In the second patient, both colonic biopsies and faeces were PCR positive for B. pilosicoli only, and B. pilosicoli was isolated from the faeces. These new faecal PCR protocols should be valuable for future studies on the epidemiology of intestinal spirochaete infections in human populations, particularly as it is not currently possible to isolate B. aalborgi from faeces.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Mikosza AS,La T,Margawani KR,Brooke CJ,Hampson DJdoi
10.1111/j.1574-6968.2001.tb10599.xkeywords:
subject
Has Abstractpub_date
2001-04-13 00:00:00pages
167-70issue
2eissn
0378-1097issn
1574-6968pii
S0378109701001008journal_volume
197pub_type
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