Molecular discrimination of taeniid cestodes :

McManus, Donald P. (2006). Molecular discrimination of taeniid cestodes :. In: N. Arizono and T. Tegoshi, Preceedings of tne International Symposium on Taeniasis/Cysticercosis and Echinococcosis with Focus on Asia and the Pacific. International Symposium on Taeniasis/Cysticercosis and Echinococcosis with Focus on Asia and the Pacific, Asahikawa, Japan, (S31-S37). 5-8 July 2005. doi:10.1016/j.parint.2005.11.004


Author McManus, Donald P.
Title of paper Molecular discrimination of taeniid cestodes :
Conference name International Symposium on Taeniasis/Cysticercosis and Echinococcosis with Focus on Asia and the Pacific
Conference location Asahikawa, Japan
Conference dates 5-8 July 2005
Proceedings title Preceedings of tne International Symposium on Taeniasis/Cysticercosis and Echinococcosis with Focus on Asia and the Pacific   Check publisher's open access policy
Journal name Parasitology International   Check publisher's open access policy
Place of Publication Amstedam, Netherlands
Publisher Elsevier
Publication Year 2006
Sub-type Fully published paper
DOI 10.1016/j.parint.2005.11.004
ISSN 1383-5769
1873-0329
Editor N. Arizono
T. Tegoshi
Volume 55
Issue Supp. 1
Start page S31
End page S37
Total pages 7
Language eng
Abstract/Summary DNA approaches are now being used routinely for accurate identification of Echinococcus and Taenia species, subspecies and strains, and in molecular epidemiological surveys of echinococcosis/taeniasis in different geographical settings and host assemblages. The publication of the complete sequences of the mitochondrial (int) genomes of E. granulosus, E. multilocularis, T solium and Asian Taenia, and the availability of mtDNA sequences for a number of other taeniid genotypes, has provided additional genetic information that can be used for more in depth phylogenetic and taxonomic studies of these parasites. This very rich sequence information has provided a solid molecular basis, along with a range of different biological, epidemiological, biochemical and other molecular-genetic criteria, for revising the taxonomy of the genus Echinococcus and for estimating the evolutionary time of divergence of the various taxa. Furthermore, the accumulating genetic data has allowed the development of PCR-based tests for unambiguous identification of Echinococcus eggs in the faeces of definitive hosts and in the environment. Molecular phylogenies derived from mtDNA sequence comparisons of geographically distributed samples of T solium provide molecular evidence for two genotypes, one being restricted to Asia, with the other occurring in Africa and America. Whether the two genetic forms of T solium differ in important phenotypic characteristics remains to be determined. As well, minor DNA sequence differences have been reported between isolates of T saginata and Asian Taenia. There has been considerable discussion over a number of years regarding the taxonomic position of Asian Taenia and whether it should be regarded as a genotype, strain, subspecies or sister species of T saginata. The available molecular genetic data do not support independent species status for Asian Taenia and T saginata. What is in agreement is that both taxa are closely related to each other but distantly related to T solium. This is important in public health terms as it predicts that cysticercosis in humans attributable to Asian Taenia does not occur, because cysticercosis is unknown in T saginata. (C) 2005 Elsevier Ireland Ltd. All rights reserved.
Subjects 320405 Medical Parasitology
730212 Disease distribution and transmission
Keyword Echinococcus
Taenia
Mitochondrial Genome
Cox1 Gene
Nad1 Gene
Dna Identification
Pcr-based Tests
Genotype
Strain
Asian Taenia
Taenia Saginata
Taenia Solium
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Issue title Taeniasis/cysticercosis and echinococcosis with focus on Asia and the Pacific

 
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Created: Wed, 15 Aug 2007, 08:56:42 EST