Memórias do Instituto Oswaldo Cruz | |
Angiostrongylus cantonensis (Nematode: Metastrongyloidea) in molluscs from harbour areas in Brazil | |
Omar Dos Santos Carvalho2  Ronaldo Guilherme Carvalho Scholte1  Cristiane Lafeta Furtado De Mendonça2  Liana Konovaloff Jannotti Passos2  Roberta Lima Caldeira2  | |
[1] ,Fiocruz Centro de Pesquisas René Rachou Belo Horizonte MG ,Brasil | |
关键词: Angiostrongylus cantonensis; molluscs; eosinophilic meningoencephalitis; ports; Brazil; | |
DOI : 10.1590/S0074-02762012000600006 | |
来源: SciELO | |
【 摘 要 】
Angiostrongylus cantonensis is the most common aetiological agent of human eosinophilic meningoencephalitis. Following a report indicating the presence of this parasite in Brazil in 2007, the present study was undertaken to investigate the presence of A. cantonensis in the surrounding Brazilian port areas. In total, 30 ports were investigated and the following molluscs were identified: Achatina fulica, Belocaulus sp., Bradybaena similaris sp., Cyclodontina sp., Helix sp., Leptinaria sp., Melampus sp., Melanoides tuberculata, Phyllocaulis sp., Pomacea sp., Pseudoxychona sp., Rhinus sp., Sarasinula marginata, Streptaxis sp., Subulina octona, Succinea sp., Tomigerus sp., Wayampia sp. and specimens belonging to Limacidae and Orthalicinae. Digestion and sedimentation processes were performed and the sediments were examined. DNA was extracted from the obtained larvae and the internal transcribed spacer region 2 was analysed by polymerase chain reaction-restriction fragment length polymorphism after digestion with the endonuclease ClaI. Of the 30 ports investigated in this study, 11 contained molluscs infected with A. cantonensis larvae. The set of infected species consisted of S. octona, S. marginata, A. fulica and B. similaris. A total of 36.6% of the investigated ports were positive for A. cantonensis, indicating a wide distribution of this worm. It remains uncertain when and how A. cantonensis was introduced into South America.
【 授权许可】
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