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Journal of Clinical Microbiology, February 2000, p. 737-744, Vol. 38, No. 2
Ministerio de Sanidad y Consumo, Instituto de
Salud Carlos III, Centro Nacional de Microbiologia, 28220 Majadahonda,
Madrid, Spain1; University of Edinburgh,
Centre for Tropical Veterinary Medicine, Easter Bush, Roslin,
Midlothian, Scotland EH25 9RG2; and
Institute for Animal Health, Pirbright Laboratories, Pirbright,
Woking, Surrey, England GU24 0NF3
Received 16 June 1999/Returned for modification 21 July
1999/Accepted 3 November 1999
We have designed species-specific oligonucleotides which permit the
differential detection of two species of cestodes, Taenia saginata and Taenia solium. The oligonucleotides
contain sequences established for two previously reported, noncoding
DNA fragments cloned from a genomic library of T. saginata.
The first, which is T. saginata specific (fragment HDP1),
is a repetitive sequence with a 53-bp monomeric unit repeated 24 times
in direct tandem along the 1,272-bp fragment. From this sequence the
two oligonucleotides that were selected (oligonucleotides PTs4F1 and
PTs4R1) specifically amplified genomic DNA (gDNA) from T. saginata but not T. solium or other related cestodes
and had a sensitivity down to 10 pg of T. saginata gDNA.
The second DNA fragment (fragment HDP2; 3,954 bp) hybridized to both
T. saginata and T. solium DNAs and was not a
repetitive sequence. Three oligonucleotides (oligonucleotides PTs7S35F1, PTs7S35F2, and PTs7S35R1) designed from the sequence of HDP2
allowed the differential amplification of gDNAs from T. saginata, T. solium, and Echinococcus
granulosus in a multiplex PCR, which exhibits a sensitivity of 10 pg.
0095-1137/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Differential Diagnosis of Taenia
saginata and Taenia solium Infection by PCR
*
Corresponding author. Mailing address: University of
Edinburgh, Centre for Tropical Veterinary Medicine, Easter Bush,
Roslin, Midlothian, Scotland, EH25 9RG. Phone: 44-131-6506217. Fax:
44-131-6506217. E-mail: Leslie.Harrison{at}ed.ac.uk.
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