Sympatric distribution of three human Taenia tapeworms collected between 1935 and 2005 in Korea.
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.
Jeon
Hyeong-Kyu
HK
Department of Parasitology and Medical Research Institute, Chungbuk National University College of Medicine, Chongju, Chungbuk 361-763, Korea.
Kim
Kyu-Heon
KH
Chai
Jong-Yil
JY
Yang
Hyun-Jong
HJ
Rim
Han-Jong
HJ
Eom
Keeseon S
KS
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
D021903:DNA, Ribosomal Spacer; D051545:Cyclooxygenase 1