Issue |
Parasite
Volume 7, Number 4, December 2000
|
|
---|---|---|
Page(s) | 305 - 309 | |
DOI | https://doi.org/10.1051/parasite/2000074305 | |
Published online | 10 September 2014 |
Note de recherche
Molecular identification of Paragonimus ohirai and P. westermani from Anhui Province, China
Identification moléculaire de Paragonimus ohirai et P. westermani de la province d’Anhui, Chine
1
Department of Parasitology, Hanyang University College of Medicine, Seoul 133-791.
2
Department of Parasitology and Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul 120-752.
3
Department of Parasitology, Soonchunhyang University College of Medicine, Chonan, Chungchongnam-do 330-090. Hwang U.W. was equally contributed with the first author for this work.
* Correspondence: Duk-Young Min. Tel.82-2-2290-0681 Fax:82-2-2281-6519. E-mail: dymin@email. hanyang.a c .kr
Received:
23
August
2000
Accepted:
29
September
2000
Nucleotide sequences of the internal transcribed spacer 2 (ITS2) region were determined from seven adults of species Paragonimus collected from Jinde and Xiuning Counties, Anhui Province, China. Among these, the nucleotide sequence obtained from one Paragonimus adult (Jinde County) was identical to the ITS2 sequence of P. ohirai previously reported. In order to confirm the result, partial regions of mitochondrial cytochrome C oxidase (COI) and NADH dehydrogenase 1 (ND1) from the putative P. ohirai sample were further sequenced. They showed a high level of similarity with those of P. ohirai, COI (99.7 %) and ND1 (99.5 %), supporting the result obtained from the ITS2. In addition to this, we designed P. ohirai and P. westermani specific primers (BDW and BD2O H) from ITS2 to identify P. westermani and P. ohirai easily and rapidly. After testing utility of the primers, they were applied to identify seven unidentified Paragonimus samples collected from Jinde and Xiuning Counties, China. All the examined samples showed P. westermani band pattern, and it was reconfirmed by sequencing their ITS2 regions that they are P. westermani. This result indicates that the two newly designed specific primers could be quite helpful for easily identifying P. westermani and P. ohirai, that most of Paragonimus in Jinde and Xiuning Counties consist of P. westermani, and that P. ohirai exists in Jinde County with minority.
Résumé
Les séquences nucléotidiques de la région ITS2 ont été déterminées à partir de sept Paragonimus adultes provenant des régions de Jinde et Xiuning de la province d'Anhui en Chine. La séquence nucléotidique obtenue à partir d'un Paragonimus adulte (région de Jindel était identique à la séquence ITS2 de P. ohirai précédemment décrite. Afin de confirmer ceci, il a été réalisé un séquençage partiel portant sur le cytochrome C oxydase I (COI) et sur la deshydrogénase NADH 1 (ND1) de l'exemplaire supposé être un P. ohira . Il a été observé un haut degré de similitude avec celles de P. ohira — COI (99,7 %) et ND1 (99,5 %) – en faveur du résultat obtenu avec ITS2. De plus, nous avons repéré des zones spécifiques d'ITS2 (BDW et BD2OH) de P. ohira et P. westermani afin de les distinguer plus facilement et rapidement. Elles ont été utilisées pour identifier sept Paragonimus provenant des régions de Jinde et de Xiuning. Tous les exemplaires ont été identifiés en tant que P. westermani. Ceci confirme que ces deux nouvelles séquences spécifiques peuvent être utile à une identification aisée de P. ohirai et P. westermani, et que la plupart des Paragonimus des régions de Jinde et Xiuning sont des P. westermani, et que P. ohirai est minoritaire dans la région de Jinde.
Key words: Paragonimus ohirai / Paragonimus westermani / Anhui Province / China / internal transcribed spacer 2 (ITS2)
Mots clés : Paragonimus ohirai / Paragonimus westermani / Province d'Anhui / Chine / internal transcribed spacer 2 (ITS2)
© PRINCEPS Editions, Paris, 2000, transferred to Société Française de Parasitologie
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