Detección molecular de Anaplasma platys en perros de Costa Rica
Fecha
2009-01
Autores
Dolz, Gaby
ROMERO-ZUÑIGA, JUAN JOSÉ
Vargas, Bernardo
Ábrego, Leida
Meneses Guevara, Ana
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Editor
Universidad Nacional, Costa Rica
Resumen
En este trabajo, se analizó, mediante la técnica de reacción en cadena de la polimerasa (PCR, Polymerase Chain Reaction, por sus siglas en inglés), la presencia de Anaplasma platys, agente causal de la trombocitopenia cíclica infecciosa canina (ICCT, infectious canine cyclic thrombocytopenia, por sus siglas en inglés), en sangre de perros de Costa Rica. Se analizaron 300 muestras sanguíneas; 20 provenían de perros con sintomatología sospechosa de ICCT, las restantes 280 muestras se obtuvieron de un banco de sangre, recolectadas previamente de perros con sintomatología sospechosa de erliquiosis. Para cada muestra, se recopiló la siguiente información: ubicación geográfica, época de recolecta, raza, edad y sexo. Las muestras de sangre se analizaron mediante dos ensayos de PCR, uno para amplificar un fragmento del gen 16S ARNr de la familia Anaplasmataceae, y un PCR anidado para amplificar, específicamente, A. platys. Un total de 19 (6.3%) muestras resultaron positivas a A. platys, lo cual demuestra la presencia del agente en perros de Costa Rica. Una cepa de A. platys mostró un 100% de similitud con una secuencia parcial del gen 16S ARNr de A. platys (AF156784) publicado en GenBank. El PCR de Anaplasmataceae detectó menor cantidad de muestras positivas a A. platys que el PCR anidado; sin embargo, proporcionó evidencia sobre la posible presencia de otras especies de la familia Anaplasmataceae en perros de Costa Rica.
The presence of Anaplasma platys, causal agent of infectious canine cyclic thrombocytopenia (ICCT) was analyzed in Costa Rican dogs using a polymerase chain reaction (PCR) assay. A total of 300 blood samples were analyzed; 20 samples were collected from dogs with suspected ICCT, while the other 280 were obtained from blood bank samples previously collected from dogs with suspected ehrlichial infection. The following information was collected for each sample: geographical location, period of sample collection, race, gender, and age. Blood samples were analyzed using two different PCR assays: one to amplify a fragment of the 16S rRNA gene of the Anaplasmataceae family and a nested PCR to specifically amplify A. platys. A total of 19 samples (6.3%) were positive for A. platys, showing the presence of the agent in dogs in Costa Rica. A strain of A. platys showed 100% similarity to a partial sequence of 16S rRNA gene of A. platys (AF156784) published in GenBank. Anaplasmataceae PCR detected less samples being positive for A. platys than nested PCR; however, this study showed evidence regarding the probable presence of other species of the Anaplasmataceae family in dogs in Costa Rica.
The presence of Anaplasma platys, causal agent of infectious canine cyclic thrombocytopenia (ICCT) was analyzed in Costa Rican dogs using a polymerase chain reaction (PCR) assay. A total of 300 blood samples were analyzed; 20 samples were collected from dogs with suspected ICCT, while the other 280 were obtained from blood bank samples previously collected from dogs with suspected ehrlichial infection. The following information was collected for each sample: geographical location, period of sample collection, race, gender, and age. Blood samples were analyzed using two different PCR assays: one to amplify a fragment of the 16S rRNA gene of the Anaplasmataceae family and a nested PCR to specifically amplify A. platys. A total of 19 samples (6.3%) were positive for A. platys, showing the presence of the agent in dogs in Costa Rica. A strain of A. platys showed 100% similarity to a partial sequence of 16S rRNA gene of A. platys (AF156784) published in GenBank. Anaplasmataceae PCR detected less samples being positive for A. platys than nested PCR; however, this study showed evidence regarding the probable presence of other species of the Anaplasmataceae family in dogs in Costa Rica.
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Palabras clave
PERRO, DOG, DIAGNÓSTICO (MEDICINA VETERINARIA), ENFERMEDADES CANINAS, REACCION DE CADENA DE LA POLIMERASA, PRUEBAS DE LABORATORIO, COSTA RICA, BIENESTAR ANIMAL, DIAGNOSIS (VETERINARY MEDICINE), CANINE DISEASES, POLYMERASE CHAIN REACTION (PCR), LABORATORY DIAGNOSIS, ANIMAL WELFARE