Parasites, Hosts and Diseases

"cestoda"

Brief Communications

Reconstruction of the nearly complete mitochondrial genome of a Danish isolate of Hymenolepis diminuta (Cyclophyllidea: Hymenolepididae) with extension of the noncoding region: Kwangjae Cho, Minkyung Kim, Yang-Kyu Choi, Won Gi Yoo; Parasites Hosts Dis 2025;63(4):364-370.
Published online November 19, 2025; DOI: https://doi.org/10.3347/PHD.25061

We present a nearly complete mitochondrial genome (mitogenome) of Hymenolepis diminuta from a Danish isolate, which was reassembled and comprehensively annotated using whole-genome sequencing data retrieved from the Sequence Read Archive (accession No. ERS056110). Although 2 mitogenomes of H. diminuta have previously been submitted to GenBank (accession No. AP017664, Danish isolate; NC_002767, putative German laboratory strain), the former lacks noncoding regions, while the latter harbors relatively short repeat units. Our newly reconstructed mitogenome is 14,090 bp long, comprising 12 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes, and a 643-bp noncoding region containing 7 tandem repeat units. The annotated sequence has been deposited in the Third Party Annotation database in GenBank (accession No. BK071817). Phylogenetic analysis based on mitogenomic sequences confirmed a close relationship between H. diminuta and Hymenolepis nana. This improved mitogenome sequence represents a valuable resource for comparative mitogenomic and phylogenetic investigations within the families Hymenolepididae, Taeniidae, and Diphyllobothriidae.

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Cloning of the novel putative apoptosis-related gene of Spirometra erinacei (Order Pseudophyllidea): Soo-Ung Lee, Sun Huh; Korean J Parasitol 2006;44(3):233-237.
Published online September 20, 2006; DOI: https://doi.org/10.3347/kjp.2006.44.3.233

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We postulated that apolysis was processed in accordance with apoptotic changes occurring in a cestode, Spirometra erinacei (Pseudophyllidea). We cloned the novel putative apoptosis-associated gene from S. erinacei via screening of a S. erinacei cDNA library with a ced-3 gene (activator of apoptosis) probe from Caenorhabditis elegans. We identified a 261-bp cDNA sequence, which encodes for an 86-amino acid protein. The cloned gene expression was observed in the neck and gravid proglottids via Northern blotting, using cloned cDNA inserts as probes, but the clone was not expressed in any of other tissues. We suggest that this gene may be involved in the apolysis of S. erinacei during normal tissue development and differentiation in cestode parasites.

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The genome of the sparganosis tapeworm Spirometra erinaceieuropaeiisolated from the biopsy of a migrating brain lesion
Hayley M Bennett, Hoi Ping Mok, Effrossyni Gkrania-Klotsas, Isheng J Tsai, Eleanor J Stanley, Nagui M Antoun, Avril Coghlan, Bhavana Harsha, Alessandra Traini, Diogo M Ribeiro, Sascha Steinbiss, Sebastian B Lucas, Kieren SJ Allinson, Stephen J Price, Thom
Genome Biology.2014;[Epub] CrossRef

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Original Article

Infection status with helminthes in feral cats purchased from a market in Busan, Republic of Korea: Woon-Mok Sohn, Jong-Yil Chai; Korean J Parasitol 2005;43(3):93-100.
Published online September 20, 2005; DOI: https://doi.org/10.3347/kjp.2005.43.3.93

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The present study was performed to investigate the infection status with helminth in a group of feral cats in Korea. More than 29 helminth species including adults or eggs were detected in visceral and fecal samples of the examined cats. Among these were a host of nematodes, including toxocarids, Ancylostoma sp. and the larva of Anisakis simplex; trematodes, including Clonorchis sinensis, Paragonimus westermani, Eurytrema pancreaticum, Pharyngostomum cordatum, Metagonimus spp., Heterophyes nocens, Pygidiopsis summa, Heterophyopsis continua, Stictodora fuscata, Stictodora lari, Acanthotrema felis, Stellantchasmus falcatus, Centrocestus armatus, Procerovum varium, Cryptocotyle sp., Echinostoma revolutum, Echinostoma hortense, Echinochasmus japonicus, Stephanoprora sp., Plagiorchis muris, Neodiplostomum sp. and diplostomulum. We also detected a variety of cestodes, including Spirometra erinacei, Taenia taeniaeformis and unidentified species of tapeworm. We also found examples of the acanthocephalan, Bolbosoma sp. In our assessment of the stools, we detected at least 12 species of helminth eggs. These findings confirmed that feral cats in Korea are infected with a variety of helminth parasite species. Furthermore, among the helminths detected, E. pancreaticum, S. fuscata, S. lari, A. felis, S. falcatus, C. armatus, P. varium, Cryptocotyle sp., E. revolutum, E. japonicus, Stephanoprora sp., P. muris, Neodiplostomum sp. and Bolbosoma sp. represent helminth fauna which have not been reported previously in feral cats in the Republic of Korea.

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