Study of the ethiological agent of gnathostomosis in Nayarit, Mexico

In order to clarify the specific identity of the ethiological agent of human gnathostomosis in Nayarit State, Mexico, morphological and molecular studies were conducted on advanced third stage larvae obtained from human and fish tissue. Cathorops fuerthii from Agua Brava lagoons complex, was the onl...

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Bibliographic Details
Published in:Parasitology international 2002-06, Vol.51 (2), p.201-204
Main Authors: León-Règagnon, Virginia, Osorio-Sarabia, David, Garcı́a-Prieto, Luis, Akahane, Hiroshige, Lamothe-Argumedo, Rafael, Koga, Masataka, Messina-Robles, Maud, Alvarez-Guerrero, César
Format: Article
Language:English
Subjects:
Animals
DNA, Helminth - analysis
DNA, Ribosomal Spacer - analysis
Fish Diseases - parasitology
Fishes - parasitology
Gnathostoma - classification
Gnathostoma - genetics
Gnathostoma - growth & development
Gnathostoma binucleatum
Human gnathostomosis
Humans
Larva - parasitology
Mexico
Molecular Sequence Data
Nayarit
Sequence Analysis, DNA
Spirurida Infections - parasitology
Spirurida Infections - veterinary
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Summary:In order to clarify the specific identity of the ethiological agent of human gnathostomosis in Nayarit State, Mexico, morphological and molecular studies were conducted on advanced third stage larvae obtained from human and fish tissue. Cathorops fuerthii from Agua Brava lagoons complex, was the only fish species found to be infected among four species surveyed. Morphological variability does not allow specific identification of the larvae. Internal transcribed spacer 2 of the ribosomal DNA was sequenced for six larvae (five from fish, one from human tissue). Low divergence in the sequences of Nayarit larvae and Gnathostoma binucleatum (0.24% or less) indicate that the larvae examined belong to this species.
ISSN:1383-5769
1873-0329
DOI:10.1016/S1383-5769(02)00014-4