Issue |
Parasite
Volume 20, 2013
|
|
---|---|---|
Article Number | 24 | |
Number of page(s) | 4 | |
DOI | https://doi.org/10.1051/parasite/2013024 | |
Published online | 01 July 2013 |
Research Article
Genetic diversity among Trypanosoma (Duttonella) vivax strains from Zambia and Ghana, based on cathepsin L-like gene
Diversité génétique des souches de Trypanosoma (Duttonella) vivax de Zambie et Ghana, basée sur le gène similaire à la cathepsine L
1
Division of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido
001-0020, Japan
2
National Livestock Resources Research Institute (NaLIRRI), P.O. Box 96
Tororo, Uganda
3
Veterinary Services Department, P.O. Box M161
Accra, Ghana
4
Department of Paraclinical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka, Zambia
* Corresponding author: sugimoto@czc.hokudai.ac.jp
Received:
27
March
2013
Accepted:
18
June
2013
Understanding the evolutionary relationships of Trypanosoma (Duttonella) vivax genotypes between West Africa and Southern Africa can provide information on the epidemiology and control of trypanosomosis. Cattle blood samples from Zambia and Ghana were screened for T. vivax infection using specie-specific PCR and sequencing analysis. Substantial polymorphism was obtained from phylogenetic analysis of sequences of cathepsin L-like catalytic domains. T. vivax from Ghana clustered together with West African and South American sequences, while T. vivax from Zambia formed one distinct clade and clustered with East African and Southern African sequences. This study suggests existence of distinct genetic diversity between T. vivax genotypes from West Africa and Zambia as per their geographical origins.
Résumé
Comprendre les relations évolutives des génotypes de Trypanosoma (Duttonella) vivax d’Afrique de l’Ouest et du Sud peut fournir des informations sur l’épidémiologie et le contrôle de la trypanosomiase. Des échantillons de sang de bétail de Zambie et du Ghana ont été testés pour l’infection à T. vivax en utilisant une PCR spécifique à l’espèce et en analysant les séquences. Un polymorphisme substantiel a été obtenu par une analyse phylogénétique des séquences de domaines catalytiques similaires à la cathepsine L. T. vivax du Ghana était groupé avec les séquences d’Afrique de l’Ouest et d’Amérique du Sud, alors que T. vivax de Zambie formait un clade distinct et était groupé avec des séquences d’Afrique de l’Est et du Sud. Cette étude suggère l’existence d’une diversité génétique distincte des génotypes de T. vivax d’Afrique de l’Ouest et de Zambie en fonction de leurs origines géographiques.
Key words: Trypanosomiasis / Trypanosoma vivax / Zambia / Ghana
© J. Nakayima et al., published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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