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Genetic Diversity of Plasmodium falciparum Shows Geographical Variation
Alison Creasey
Alison Creasey
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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Brian Fenton
Brian Fenton
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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Alison Walker
Alison Walker
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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Sodsri Thaithong
Sodsri Thaithong
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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Salma Oliveira
Salma Oliveira
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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Susan Mutambu
Susan Mutambu
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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David Walliker
David Walliker
University of Edinburgh, Chulalongkorn University, Instituto Evandro Chagas, Blair Research Laboratory, Edinburgh, Scotland, United Kingdom
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Sixty Plasmodium falciparum isolates, 20 each from Thailand, Zimbabwe, and Brazil, were characterized for 20 variant genetic markers, including the enzymes glucose phosphate isomerase, adenosine deaminase and peptidase, 11 other proteins detected by 2-dimensional electrophoresis (2D-PAGE), 2 merozoite surface antigens (MSA-1 and MSA-2), one exported antigen (Exp-1), and sensitivity to the drugs chloroquine, pyrimethamine, and mefloquine. The study examines the extent of diversity between individual isolates and the differences in the frequency of certain variants of the markers between the 3 countries. The principal conclusions to be drawn from the study are that there is extensive polymorphism in many of the genetically determined characters of this parasite, multiple infections with >1 genetically distinct parasite are common, and there are geographical variations in the frequencies with which variant forms of certain markers occur.
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| Past two years | Past Year | Past 30 Days | |
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| Abstract Views | 1469 | 1171 | 234 |
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| PDF Downloads | 26 | 11 | 0 |