title: Sympatric distribution of three human Taenia tapeworms collected between 1935 and 2005 in Korea.
abstract: Taeniasis has been known as one of the prevalent parasitic infections in Korea. Until recently, Taenia saginata had long been considered a dominant, and widely distributed species but epidemiological profiles of human Taenia species in Korea still remain unclear. In order to better understand distribution patterns of human Taenia tapeworms in Korea, partial nucleotide sequences of mitochondrial cox1 and ITS2 (internal transcribed spacer 2) were determined, along with morphological examinations, on 68 Taenia specimens obtained from university museum collections deposited since 1935. Genomic DNA was extracted from formalin-preserved specimens. Phylogenetic relationships among the genotypes (cox1 haplotype) detected in this study were inferred using the neighbor-joining method as a tree building method. Morphological and genetic analyses identified 3 specimens as T. solium, 51 specimens as T. asiatica, and 14 specimens as T. saginata. Our results indicate that all 3 Taenia tapeworms are sympatrically distributed in Korea with T. asiatica dominating over T. saginata and T. solium.
authors.affiliation: Department of Parasitology and Medical Research Institute, Chungbuk National University College of Medicine, Chongju, Chungbuk 361-763, Korea.
authors.forename: Hyeong-Kyu
authors.initials: HK
authors.lastname: Jeon
authors.forename: Kyu-Heon
authors.initials: KH
authors.lastname: Kim
authors.forename: Jong-Yil
authors.initials: JY
authors.lastname: Chai
authors.forename: Hyun-Jong
authors.initials: HJ
authors.lastname: Yang
authors.forename: Han-Jong
authors.initials: HJ
authors.lastname: Rim
authors.forename: Keeseon S
authors.initials: KS
authors.lastname: Eom
mesh_terms: D000818:Animals; D001483:Base Sequence; D002590:Cestode Infections / Q000453:epidemiology / Q000469:parasitology; D051545:Cyclooxygenase 1 / Q000235:genetics / Q000378:metabolism; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D005786:Gene Expression Regulation; D006801:Humans; D007723:Korea / Q000453:epidemiology; D008928:Mitochondria / Q000201:enzymology; D008969:Molecular Sequence Data; D010802:Phylogeny; D013621:Taenia / Q000145:classification* / Q000235:genetics*; D013997:Time Factors
chemical_list: D021903:DNA, Ribosomal Spacer; D051545:Cyclooxygenase 1