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 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.

• Fecha de publicación: 2016
• Institución: Universidad del Rosario
• Repositorio: Repositorio EdocUR - U. Rosario
• Idioma: eng
• OAI Identifier: oai:repository.urosario.edu.co:10336/24299
• Acceso en línea: https://doi.org/10.1016/j.meegid.2016.03.017; https://repository.urosario.edu.co/handle/10336/24299
• Palabra clave: 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; Blastocystis infections; Classification; Feces; Female; Genetics; Genotype; Isolation and purification; Male; Molecular epidemiology; Parasitology; Phylogeny; Severity of illness index; Transmission; Protozoal dna; Asymptomatic diseases; Blastocystis; Blastocystis infections; Feces; Female; Genotype; Humans; Male; Molecular epidemiology; Phylogeny; Phylogeography; Severity of illness index; South america; 18s alleles; Blastocystis; Genotyping; Molecular epidemiology; Subtypes; protozoan; Dna
• License: Abierto (Texto Completo)