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Descarga Aquí La Publicación Completa VERSIÓN: ISSN 0718-8730 CONTINUACIÓN DE PARASITOLOGÍA LATINOAMERICANA Y REVISTA IBÉRICA DE PARASITOLOGÍA ARTÍCULOS ORIGINALES • Diagnóstico molecular de la infección con Trypanosoma cruzi en ratones. • Estructura secundaria y mapa de variabilidad de la subunidad pequeña del ARNr de Entamoeba . Posibles implicaciones para la taxonomía del género. • Tegumental ultrastructure of Echinostoma caproni adults (Trematoda: Echinostomatidae). • Parasitismo intestinal, anemia y estado nutricional en niños de la comunidad de Yantaló, San Martín, Perú. • Rol de la Imagenología en el diagnóstico de las parasitosis. • Modificación de la célula nodriza de T. spiralis en ratas long Evans inmunizadas con antígeno soluble total de T. spiralis y sacrificadas en diferentes tiempos. • Frecuencia de esquistosomiasis y otras enfermedades parasitarias en Zuata, Edo Aragua, Venezuela 2008-2009. • Prevalencia de Ornithonyssus bursa en aves passeriformes. COMUNICACIONES • Prevalencia de parásitos gastrointestinales en equinos Pura ORGANO OFICIAL Sangre de Carrera durante. el período de cuarentena 2012 DE LA FEDERACIÓN en el hipódromo “La Rinconada” Caracas, Venezuela. LATINOAMERICANA DE PARASITÓLOGOS • Efecto de un inmunomodulador comercial en combinación con oxitetraciclina, imidocarb y diminazeno en el tratamiento de piroplasmosis en equinos Pura Sangre de Carrera. SOCIEDAD ESPAÑOLA DE PARASITOLOGÍA VOLUMEN 71 JULIO - DICIEMBRE 2012 Núm 2 ISSN: 0718-8730 Revista Ibero-Latinoamericana de Parasitología Volumen 71 Nº 2 - 2012 Órgano oficial de la Federación Latinoamericana de Parasitólogos y de la Sociedad Española de Parasitología Producción: María Cristina Illanes H. [email protected] Prohibida su reproducción total o parcial sin autorización del editor. 114 REVISTA IBERO-LATINOAMERICANA DE PARASITOLOGIA Editor Héctor Alcaíno Contador (Chile) Editor Alterno Antonio Osuna Carrillo de Albornoz (Universidad de Granada - España) Co-Editores (Receiving Editors) A. Martínez Fernández (UCM - España) F. Martínez Ubeira (USC - España) Mª D. Bargues (UV - España) F. Rojo Vazquez (ULE - España) W. Apt (Universidad de Chile) Secretaria de Edición Dra. Susana Vilchez Tornero (Universidad de Granada - España) Comité Editorial Alejandro G. Schijman (Argentina) Jorge Sapunar (Chile) Ana Espino (Univ de Puerto Rico) J.P. Dubey (Iowa. USA) Anne F. Petavy (Lyon, Francia) JM Correia da Costa (Portugal) Benjamín Cimerman (Brasil) J. Guisantes del Barco (Univ. del País Vasco, España) César Náquira (Perú) Luca Rossi (Turín, Italia) Claudio Genchi (Italia, Milán) Michel Tibayrenc (Montpellier, Francia) Christian Epe (Hannover, Alemania) Naftale Katz (Belo Horizonte, Brasil) David Rollinson (Natural History Museum Osvaldo Ceruzzi (Uruguay) London, UK) Pascal Boireau (Francia) Douglas Colwell (Lethbridge, Alberta. Canadá) Paul de Rycke (Gent, Bélgica) David Botero (Colombia) Peter Schantz (Atlanta, USA) Edoardo Pozio (Roma, Italia) Philippe Dorchies (Touluse, Francia) Els Meeusen (Monash University, Australia) Ramón Carreño Passow (Ohio Wesleyan George Hillyer (Puerto Rico, USA) University, USA) Guillermo Denegri (Argentina) Ramón Lazo (Ecuador) Heinz Mehlhorn (Bochum, Alemania) Raúl Romero Cabello (México) Hernán Reyes (Chile) Rodrigo Zeledón (Costa Rica) Jacques Cabaret (INRA, Tours, Francia) Thomas Schnieder (Director Institute for Jack Frenkel (Nueva México, USA) Parasitology, Hannover, Alemania) Jean Dupouy-Camet (Paris) Yves Carlier (Bruselas, Bélgica) Jorge Guerrero (Philadelfia, USA) 115 Rev. Ibero-Latinoam. Parasitol. (2012); 71 (2): 116 Contenido ARTÍCULOS ORIGINALES - Diagnóstico molecular de la infección con Trypanosoma cruzi en ratones. Zúñiga P., Ponzano P., Romo G, Paláu M.T., Larenas J., García A. y Vergara, U. ..................... 117 - Estructura secundaria y mapa de variabilidad de la subunidad pequeña del ARNr de Entamoeba. Posibles implicaciones para la taxonomía del género. Alfonso S., Martínez-Díaz R.A. y Ponce-Gordo F. ....................................................................... 125 - Tegumental ultrastructure of Echinostoma caproni adults (Trematoda: Echinostomatidae). Sotillo J., Trudgett A., Cortés A. T., Trelis M., Fried B, Marcilla A., Esteban J. G and Toledo R. 138 - Parasitismo intestinal, anemia y estado nutricional en niños de la comunidad de Yantaló, San Martín, Perú. Garaycochea O., Acosta-García G, Vigo-Ames N., Heringman K., Dyer A., Jerí S. y Siancas G. ........................................................................................................ 143 - Rol de la Imagenología en el diagnóstico de las parasitosis. Canals M. .................................................................................................................................... 152 - Modificación de la célula nodriza deT. spiralis en ratas long Evans inmunizadas con antígeno soluble total de T. spiralis y sacrificadas en diferentes tiempos. Laredo S. V., Martínez M. P., Reveles R. G., Muñoz J. J. y Moreno M. A .................................... 160 - Frecuencia de esquistosomiasis y otras enfermedades parasitarias en Zuata, Edo Aragua, Venezuela 2008-2009. González A., Montenegro I., Navarro M ., De Noya B. y López M. ............................................. 167 - Prevalencia del ácaro Ornithonyssus bursa Berlese, 1888 (Mesostigmata: Macronyssidae) en un ensamble de aves (Passeriformes) de bosques del centro de la Provincia de Santa Fe, Argentina. Arrabal J. P., Manzoli D. E., Antoniazzi L. R., Lareschi M. y Beldomenico P. M. ....................... 172 COMUNICACIONES - Prevalencia de parásitos gastrointestinales en equinos Pura Sangre de Carrera durante el período de cuarentena 2012 en el hipódromo “La Rinconada” Caracas, Venezuela. Morales A A., Bello H y Villoria D. .............................................................................................. 179 - Efecto de un inmunomodulador comercial en combinación con oxitetraciclina, imidocarb y diminazeno en el tratamiento de piroplasmosis en equinos Pura Sangre de Carrera. Morales A., Villoria D., Romero N., Morales G., Kassar M., Arrieta D. y Requiz F. .................. 183 Índice de Autores 2012 ...................................................................................................................... 188 Normas de publicación ...................................................................................................................... 190 116 Rev. Ibero-Latinoam. Parasitol. (2012); 71 (2): 117-124 Artículo Original Diagnóstico molecular de la infección con Trypanosoma cruzi en ratones ZÚÑIGA C.1, PONZANO P.1, ROMO G.1, PALÁU M.T. 4, LARENAS J.3, GARCÍA A5 y VERGARA U.1,2 1 Departamento de Medicina Preventiva, Facultad de Ciencias Veterinarias, Universidad de Chile. Avenida Santa Rosa 11735. La Pintana, Santiago - Chile. 2 Escuela de Postgrado, Facultad de Medicina, Universidad de Chile. Avenida Independencia 1027, Santiago- Chile. 3 Departamento de Patología Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile. Avenida Santa Rosa 11735, La Pintana, Santiago - Chile. 4 Carrera de Nutrición, Universidad Autónoma de Chile, Santiago - Chile. 5 Escuela de Tecnología Médica, Universidad Pedro de Valdivia, La Serena - Chile. ABSTRACT MOLECULAR DIAGNOSIS OF TRYPANOSOMA CRUZI INFECTION IN MICE Mice from CF1 and A.Sw strains were experimentally infected with 2000 Dm28c trypomastigotes of Trypanosoma cruzi. Although both mouse groups showed a similar prepatent period of three days after initial infection, the number of free parasites in bloodstream and the percentage of accumulated mortality were significantly different. Nine days after infection, the CF1 mice showed a maximum parasitemia level of only 8,7 x 104 ± 1,2 x 103 parasites/mL, while A.Sw mice reached a significant higher level of 24,7 x 104 ± 2,5 x 103 parasites/mL (p < 0,0069), at the seventeenth day of infection After the peak of parasitemia, the number of parasites rapidly decreased and the bloodstream became negative in a seven days time period, in both groups of infected animals. The results of accumulated mortality, used as a criteria to establish susceptibility or resistance to T cruzi infection, showed that CF1 mice are highly susceptible to the parasite, reaching 100% of accumulated mortality at 25 days after initial infection, On the contrary, A.Sw mice appear to be resistant to Chagas disease since they showed a significantly lower 20% of accumulated mortality (p < 0,0023) at twenty fifth day of infection and 70% survived longer than six months after initial infection. However, when we performed a conventional polymerase chain reaction using the T. cruzi specific minicircle primers 121 and 122, the 330-basepair parasite. Key words: Tripanosoma cruzi, mice strains, PCR Recibido: 16 de Agosto de 2012. Aceptado: 30 de Octubre de 2012. Correspondencia : C. Zúñiga. Email: [email protected] U. Vergara Email: [email protected] 117 C. ZÚÑIGA et al. RESUMEN Ratones de las cepas CF1 y A.Sw fueron experimentalmente infectados con 2000 tripomastigotes sanguíneos del clon Dm28c de Trypanosome cruzi. Aunque ambos grupos mostraron una prepatencia similar de tres días, el número de parásitos libres en el torrente sanguíneo y el porcentaje de mortalidad acumulada fueron significativamente diferentes. Nueve días después de la infección inicial los ratones CF1 mostraron un nivel máximo de parasitemia de sólo 8,7 x 104 ± 1,2 x 103 parásitos/mL, mientras los ratones A.Sw alcanzaron un nivel significativamente más alto de 24,7 x 104 ± 2,5 x 103 parásitos/mL (p < 0,0069), al
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