Geographic distribution of human Blastocystis subtypes in South America

Blastocystis is a cosmopolitan enteric protist colonizing probably more than 1 billion people. This protozoan exhibits genetic diversity and is subdivided into subtypes (STs). The aim of this study was to determine the distribution of Blastocystis STs in symptomatic and asymptomatic human samples fr...

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Detalhes bibliográficos
Autores: Ramírez, Juan David, Sánchez A., Hernández C., Flórez C., Bernal M.C., Giraldo J.C., Reyes P., López M.C., García L., Cooper P.J., Vicuña Y., Mongi F., Casero R.D.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Colombia
Recursos:Universidad del Rosario
Repositorio:Repositorio EdocUR - U. Rosario
Idioma:inglés
OAI Identifier:oai:repository.urosario.edu.co:10336/24299
Acesso em linha:https://doi.org/10.1016/j.meegid.2016.03.017
https://repository.urosario.edu.co/handle/10336/24299
Access Level:acceso abierto
Palavra-chave:Allele
Article
Blastocystis
Feces analysis
Gene frequency
Genetic variability
Geographic distribution
Human
Molecular epidemiology
Multilocus sequence typing
Nonhuman
Nucleotide sequence
Parasite identification
Phylogeny
Phylogeography
Priority journal
Sequence analysis
South america
Asymptomatic disease
Blastocystis infections
Classification
Feces
Female
Genetics
Genotype
Isolation and purification
Male
Parasitology
Severity of illness index
Transmission
Protozoal dna
Asymptomatic diseases
Humans
18s alleles
Genotyping
Subtypes
protozoan
Dna
Descrição
Resumo:Blastocystis is a cosmopolitan enteric protist colonizing probably more than 1 billion people. This protozoan exhibits genetic diversity and is subdivided into subtypes (STs). The aim of this study was to determine the distribution of Blastocystis STs in symptomatic and asymptomatic human samples from different countries of South America. A total of 346 fecal samples were genotyped by SSU rDNA showing ST1 (28.3%), ST2 (22.2%), ST3 (36.7%), ST4 (2%), ST5 (2.3%), ST6 (2%), ST7 (2.3%), ST8 (0.6%), ST12 (0.9%) and a novel ST (2.7%). These findings update the epidemiology of Blastocystis in South America and expand our knowledge of the phylogeographic differences exhibited by this stramenopile. © 2016 Elsevier B.V.

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