Subtype Distribution of Blastocystis in Thai-Myanmar Border, Thailand

Supaluk Popruk; Ruenruetai Udonsom; Khuanchai Koompapong; Aongart Mahittikorn; Teera Kusolsuk; Jiraporn Ruangsittichai; Attakorn Palasuwan

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저자정보: Supaluk Popruk (Mahidol University) Ruenruetai Udonsom (Mahidol University) Khuanchai Koompapong (Mahidol University) Aongart Mahittikorn (Mahidol University) Teera Kusolsuk (Mahidol University) Jiraporn Ruangsittichai (Mahidol University) Attakorn Palasuwan (Chulalongkorn University)

저널정보: 대한기생충학열대의학회 Parasites, Hosts and Diseases The Korean Journal of Parasitology Vol.53 No.1

발행연도: 2015.2

수록면: 13 - 19 (7page)

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Blastocystis sp. is a common zoonotic intestinal protozoa which has been classified into 17 subtypes (STs). A cross-sectional study was conducted to determine the prevalence and subtype distribution of Blastocystis in villagers living on the Thai-Myanmar border, where the risk of parasitic infection is high. A total of 207 stool samples were collected and DNA was extracted. PCR and sequencing using primers targeting small-subunit ribosomal RNA (SSU rRNA) gene were performed. The prevalence of Blastocystis infection was 37.2% (77/207). ST3 (19.8%; 41/207) was the predominant subtype, followed by ST1 (11.6%; 24/207), ST2 (5.3%; 11/207), and ST4 (0.5%; 1/207). A phylogenetic tree was reconstructed using the maximum likelihood (ML) method based on the Hasegawa-Kishino-Yano + G + I model. The percentage of bootstrapped trees in which the associated taxa clustered together was relatively high. Some sequences of Blastocystis positive samples (TK18, 39, 46, 71, and 90) were closely related to animals (pig and cattle) indicating zoonotic risks. Therefore, proper health education in parasitic prevention for the villagers should be promoted to improve their personal hygiene. Further longitudinal studies are required to monitor the prevalence of parasitic infections after providing health education and to investigate Blastocystis ST in animals living in these villages.

#Blastocystis #zoonotic risk #Thai-Myanmar border

참고문헌 (37)

참고문헌 신청

Tan KS / 2008 / New insights on classification, identification, and clinical relevance of Blastocystis spp / Clin Microbiol Rev 21:639~665

Yakoob J / 2010 / Irritable bowel syndrome: is it associated with genotypes of Blastocystis hominis / Parasitol Res 106:1033~1038

Wong KH / 2008 / Predominance of subtype 3 among Blastocystis isolates from a major hospital in Singapore / Parasitol Res 102:663~670

Alfellani MA / 2013 / Genetic diversity of Blastocystis in livestock and zoo animals / Protist 164:497~509

Rene BA / 2009 / Subtype analysis of Blastocystis isolates from Blastocystis cyst excreting patients / Am J Trop Med Hyg 80:588~592

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