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      Confirmation of the presence of Angiostrongylus cantonensis in lung tissue of the African giant snail (Lissachatina fulica) in Colombia Translated title: Confirmación de la presencia de Angiostrongylus cantonensis en tejido pulmonar de caracol gigante Africano (Lissachatina fulica) en Colombia

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          Abstract

          Abstract Objetive: To confirm the presence of Angiostrongylus cantonensis in Lissachatina fulica individuals in Colombia. Methods: 19 individuals of L. fulica were collected in the city of Buenaventura, Valle del Cauca, Colombia. Lung tissue was extracted and two analysis methods were used: visual identification by histological observation, and identification through conventional and real-time PCR. The A. cantonensis detection rate was established taking into account each of the analysis techniques used. Results: Presence of A. cantonensis was confirmed in the lung tissue of L. fulica specimens collected in the city of Buenaventura, Valle del Cauca, Colombia. The detection rate based on visual identification through histological analysis was 89%, whereas it was 95% using conventional PCR, and 100% using real-time PCR. Conclusion: This study confirmed for the first time the presence of A. cantonensis associated with L. fulica specimens in Colombia. Therefore, eosinophilic meningitis could be considered an emerging disease in Colombia.

          Translated abstract

          Resumen Objetivo: confirmar la presencia de Angiostrongylus cantonensis en individuos de Lissachatina fulica en Colombia. Materiales y métodos: se recolectaron 19 individuos de L. fulica en la ciudad de Buenaventura, Valle del Cauca, Colombia. Se extrajo el tejido pumonar y se utilizaron dos métodos de análisis: identificación visual por observación histológica e identificación a través de PCR convencional y en tiempo real. La tasa de detección de A. cantonensis fue establecida para cada una de las técnicas de análisis utilizadas. Resultados: se confirmó la presencia de A. cantonensis en el tejido pulmonar de los especímenes de L. fulica recolectados en la ciudad de Buenaventura, Valle del Cauca, Colombia. La tasa de detección alcanzanda a través de la técnica de identificación visual mediante análisis histológico fue del 89%, mientras que usando la técnica de PCR convencional fue del 95% y de PCR en tiempo real fue del 100%. Conclusión: este estudio confirma por primera vez la presencia de A. cantonensis asociado a especímenes de L. fulica en Colombia. Por lo tanto, se sugiere que la meningitis eosinofílica sea propuesta como una enfermedad emergente en Colombia.

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          The giant African snail Achatina fulica as natural intermediate host of Angiostrongylus cantonensis in Pernambuco, northeast Brazil.

          The human cases of eosinophilic meningitis recently reported from Brazil have focused the attention of the public health agencies on the role the introduced snail Achatina fulica plays as hosts of the metastrongylid nematodes. Determining the potential of this snail to host and develop infective larval stages of metastrongylids in the wild and identify the species harbored by them is crucial for designing effective control measures. Here we assess if A. fulica may act as intermediate host of A. cantonensis at the peridomiciliary areas of a patient's house from state of Pernambuco (PE), who was diagnosed with eosinophilic meningitis and a history of ingesting raw molluscs. Larvae obtained from naturally infected A. fulica were orally administered to Rattus norvegicus. The worms were collected from the pulmonary artery and brain, and were morphologically characterized and compared to the Japan isolate of A. cantonensis. Adult worms and infective L(3) larvae (PE isolate) recovered from A. fulica specimens were also analyzed by polymerase chain reaction and restriction fragment length polymorphism of ITS2 region from rDNA and compared to A. cantonensis (ES isolate), A. vasorum (MG isolate) and A. costaricensis (RS isolate). The large size of the spicules (greater than those observed in other species of Angiostrongylus) and the pattern of the bursal rays agree with the original species description by Chen (1935). Furthermore, the morphology of the PE isolate was similar to that of Japan isolate. The PCR-RFLP profiles obtained were distinctive among species and no variation in patterns was detected among adult individuals from A. cantonensis isolates from PE and ES. The importance of A. fulica as an intermediate host of eosinophilic menigoencepahlitis in Brazil is emphasized. 2010 Elsevier B.V. All rights reserved.
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            Diagnostic morphology of the third-stage larvae of Angiostrongylus cantonensis, Angiostrongylus vasorum, Aelurostrongylus abstrusus, and Anafilaroides rostratus (Nematoda: Metastrongyloidea).

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              The discovery of Angiostrongylus cantonensis as a cause of human eosinophilic meningitis.

              The theoretical and subsequent confirmation in 1961 of the rat lungworm, Angiostrongylus cantonensis, as the causative agent o f eosinophilic meningitis is one o f the remarkable parasitological findings of the twentieth century. Here, Joseph Alicato briefly summarizes the early history and his epidemiological studies on the relationship between the parasite and the epidemics o f encephalitis that swept through Oceania after the Second World War.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                inf
                Infectio
                Infect.
                Asociación Colombiana de Infectología. (Bogotá, Distrito Capital, Colombia )
                0123-9392
                June 2019
                : 23
                : 2
                : 129-132
                Affiliations
                [1] Cali Valle del Cauca orgnameUniversidad del Valle orgdiv1Facultad de Ciencias Naturales y Exactas orgdiv2Departamento de Biología, Grupo de Investigación en Ecología Animal Colombia
                [2] Cali Valle del Cauca orgnameUniversidad del Valle orgdiv1Facultad de Ciencias Naturales y Exactas orgdiv2Departamento de Biología, Grupo de Investigación en Genética Molecular Humana Colombia
                Article
                S0123-93922019000200129
                10.22354/in.v23i2.768
                0d301166-e1fe-418c-986d-86debd8e9377

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 14 April 2018
                : 11 August 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 23, Pages: 4
                Product

                SciELO Colombia

                Categories
                Original articles

                Parasitic disease,meningoencephalitis,mollusks,parasites,disease vectors,zoonoses,enfermedad parasítica,meningoencefalítis,moluscos,parasitos,vectores de enfermedades,zoonosis

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