Pseudoterranovosis y sushi

Abstract

A case of accidental ingestion of Pseudoterranova decipiens is reported, on account of this patient we review main concepts related to this emerging pathology in Chile. Consumption of raw fish in different preparations such as sushi or sashimi, cebiche and seafood is becoming more and more popular. Through intermediary hosts used in the preparation, one can acquire the third stage larval of Anisakis simplex or P. decipiens. These parasites frequently cause gastritis, acutely after the consumption of raw fish, or more rarely intestinal involvement. It may also cause allergic symptoms such as urticaria, angioedema and anaphylactic shock. The larvae is eliminated spontaneously in most cases; others need to be removed by upper gastrointestinal endoscopic examination. In Chile, the most common species is P. decipiens, which are generally no invasive, rarely migrate beyond the stomach and cause mild or no symptoms. Prevention strategies include avoid eating raw fish or undercooked seafood containing the parasite, to cook food with high temperatures or to freeze raw fish prior to preparation of meals, which inactivates the larvae.Key words: Anisakidosis, anisakiosis, pseudoterranovosis, Anisakis simplex, Pseudoterranova decipiens, foodborne parasitic infections, fishborne parasitic infections, zoonoses.Palabras clave: anisakidosis, anisakiosis, pseudoterranovosis, Anisakis simplex, Pseudoterranova decipiens, enfermedades parasitarias transmitidas por alimentos, enfermedades parasitarias transmitidas por peces y mariscos, zoonosis. Introduccióne estima que las infecciones parasitarias transmitidas por alimentos afectan a más de 50 millones de personas en el mundo, cifra probablemente sub-estimada por la dificultad en el diagnóstico y una sub-notificación. La mayor incidencia de estas infecciones se encuentra en el Este y Sudeste asiático, situación que se está haciendo cada vez más frecuente en nuestro medio con los viajes a destinos exóticos y la incorporación de la comida oriental a los menús tradicionales. Las infecciones parasitarias son el resultado de la ingesta de alimentos crudos o mal cocidos. Comentario editorial en página 196. La mayoría de estos cuadros son producidos por nemátodos, tremátodos, céstodos y protozoos 1 . Presentamos el caso de una paciente que tras visitar un restaurante de comida japonesa, elimina con la tos una forma juvenil de nemátodo. Caso ClínicoPaciente de 30 años, sexo femenino, sana, residente en la ciudad de Santiago. Asistió a un restaurante de comida japonesa, donde degustó sushi de variados sabores, algunos de ellos preparados con salmón crudo. Al día siguiente, comenzó con tos y estornudos, se

TheAnisakis simplexAni s 7 major allergen as an indicator of trueAnisakisinfections

“…4), differentiation between Anisakis and Pseudoterranova infection may also be possible. Although human Anisakis infections are much more prevalent, pseudoterranovosis is currently arising as an emerging infection in some countries where consumption of raw fish in different dishes such as sushi, sashimi and ceviche is becoming popular [28,29]. In contrast to the failure of the Anisakis dead larvae to induce a good antibody response against the polypeptide t-Ani s 7 in rats, dead larvae were able to induce a strong IgG1 response and slight IgE, IgA, IgG2b and IgG2c responses when nAni s 7 was used as target antigen in capture ELISA.…”

Anisakid nematodes prevalence in Chilean hake (Merluccius gayi gayi) commercialized in the city of Talca, Chile

“…In South America, Chile is the country that shows a high prevalence of anisakids in fish , becoming it into a country very susceptible to present cases of anisakiasis in humans. Anisakidae includes 24 genera, three of them with importance in public health: Anisakis, Contracaecum and Pseudoterranova (Jofré et al, 2008). Fish are an intermediate host of the L3 infective larvae, which migrate through the digestive wall reaching abdominal organs such as liver, ventral or dorsal muscles, and surrounding connective tissue.…”

Eliminación de estadios juveniles de Ascaris lumbricoides (Linneo, 1758) por via oral: Reporte de un caso y algunas consideraciones epidemiológicas

“…El diagnóstico diferencial debe efectuarse con estadíos juveniles de helmintos de la Familia Anisakidae, que pertenecen también al orden Ascaridida, y que son eliminados por la boca 13 , escasos días después de haber ingerido pescado crudo o insufi cientemente cocido (esta paciente había ingerido merluza cruda, como cebiche, 11 días atrás).…”