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Journal of Clinical Microbiology, July 2001, p. 2713-2716, Vol. 39, No. 7
Children's Research Centre, Our Lady's
Hospital for Sick Children,1 and
Department of Paediatrics, The Conway Institute, University
College Dublin,3 Dublin 12, Ireland, and
National Laboratory for Enteric Pathogens, Canadian Science
Centre for Human and Animal Health, Laboratory Centre for Disease
Control, Winnipeg, Manitoba, Canada2
Received 27 December 2000/Returned for modification 10 January
2001/Accepted 12 April 2001
The optimum method for isolating Campylobacter
upsaliensis from stools has not been clearly defined. In a
preliminary study, cefoperazone amphotericin teicoplanin (CAT)
selective medium isolated six C. upsaliensis strains
which were not detected using modified cefoperazone charcoal
deoxycholate (mCCDA). In order to identify the factors that underlie
the superiority of CAT over mCCDA for isolating C. upsaliensis, we examined the effect of incubation time and
antibiotic content of culture media on the growth of C. upsaliensis isolates using semiquantitative methods. The
recovery of a subgroup of C. upsaliensis isolates from
seeded stool specimens was also evaluated. Differences in growth of
C. upsaliensis on CAT and mCCDA were modest and
were not explained by the antibiotic profiles of the two
media. Recovery of C. upsaliensis from spiked human
feces on CAT was superior to that on mCCDA at lower concentrations of
organisms (103 CFU/ml). We conclude that although CAT
is more suitable than mCCDA for the isolation of
C. upsaliensis from stools, the superiority of CAT for
detecting this organism is not accounted for by the antibiotic
composition of the medium.
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.7.2713-2716.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Basis of the Superiority of Cefoperazone Amphotericin
Teicoplanin for Isolating Campylobacter upsaliensis
from Stools
*
Corresponding author. Mailing address: The Children's
Research Centre, Our Lady's Hospital for Sick Children, Crumlin,
Dublin 12, Ireland. Phone: 353-1-4556901. Fax: 353-1-4555307. E-mail: BILLY.BOURKE{at}ucd.ie.
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