Population genetic structure of Taenia solium from Madagascar and Mexico: implications for clinical profile diversity and immunological technology

Journal article


Vega, R., Piñero, D., Ramanankandrasana, B., Dumas, M., Bouteille, B., Fleury, A., Sciutto, E., Larralde, C. and Fragoso, G. 2003. Population genetic structure of Taenia solium from Madagascar and Mexico: implications for clinical profile diversity and immunological technology. International Journal for Parasitology. 33 (13), pp. 1479-1485. https://doi.org/10.1016/S0020-7519(03)00206-6
AuthorsVega, R., Piñero, D., Ramanankandrasana, B., Dumas, M., Bouteille, B., Fleury, A., Sciutto, E., Larralde, C. and Fragoso, G.
Abstract

Taenia solium is a cestode parasitic of humans and pigs that strongly impacts on public health in developing countries. Its larvae (cysticercus) lodge in the brain, causing neurocysticercosis, and in other tissues, like skeletal muscle and subcutaneous space, causing extraneuronal cysticercosis. Prevalences of these two clinical manifestations vary greatly among continents. Also, neurocysticercosis may be clinically heterogeneous, ranging from asymptomatic forms to severely incapacitating and even fatal presentation. Further, vaccine design and diagnosis technology have met with difficulties in sensitivity, specificity and reproducibility. Parasite diversity underlying clinical heterogeneity and technological difficulties is little explored. Here, T. solium genetic population structure and diversity was studied by way of random amplified polymorphic DNA in individual cysticerci collected from pigs in Madagascar and two regions in Mexico. The amplification profiles of T. solium were also compared with those of the murine cysticercus Taenia crassiceps (ORF strain). We show significant genetic differentiation between Madagascar and Mexico and between regions in Mexico, but less so between cysticerci from different localities in Mexico and none between cysticerci from different tissues from the same pig. We also found restricted genetic variability within populations and gene flow was estimated to be low between populations. Thus, genetic differentiation of T. solium suggests that different evolutionary paths have been taken and provides support for its involvement in the differential tissue distribution of cysticerci and varying degrees of severity of the disease. It may also explain difficulties in the development of vaccines and tools for immunodiagnosis.

Year2003
JournalInternational Journal for Parasitology
Journal citation33 (13), pp. 1479-1485
PublisherElsevier
ISSN00207519
Digital Object Identifier (DOI)https://doi.org/10.1016/S0020-7519(03)00206-6
Publication process dates
Deposited27 Apr 2017
Accepted14 Jul 2003
Output statusPublished
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https://repository.canterbury.ac.uk/item/8825z/population-genetic-structure-of-taenia-solium-from-madagascar-and-mexico-implications-for-clinical-profile-diversity-and-immunological-technology

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