RESUMO
OBJECTIVE: . To characterize the nucleoprotein (N) and establish the origin of the rabies virus in dogs coming from Arequipa. MATERIALS AND METHODS.: Thirty samples of nervous tissue from the departments of Arequipa and Puno were analyzed. Total RNA was extracted from the samples and cDNA was synthesized to amplify the nucleoprotein gene, sequence it, and perform bioinformatics analysis. RESULTS: . A defined group was formed with respect to the external group (European bat lyssavirus). This group was classified into two subgroups, one constituted by samples coming from Puno and Arequipa (subgroup A), and another one by samples from Puno (subgroup B), exhibiting a nucleotide identity of 99.9% in subgroup A. This group was classified in two subgroups, one constituted by samples coming from Puno and Arequipa (subgroup A), and another one by samples from Puno (subgroup B), observing a nucleotide identity of 99.9% in subgroup A. CONCLUSIONS.: The groupings of viral sequences show that the cases of canine rabies reported in Arequipa are the result of the expansion of canine rabies from the endemic region of Puno.
OBJETIVOS.: Caracterizar la nucleoproteína (N) y establecer el origen del virus de la rabia en canes procedentes de Arequipa. MATERIALES Y MÉTODOS.: Se analizaron 30 muestras de tejido nervioso procedentes de los departamentos de Arequipa y Puno. Se extrajo el ARN total de las muestras y se sintetizó ADNc para amplificar el gen de la nucleoproteína, secuenciarlo y realizar el análisis bioinformático. RESULTADOS.: Se obtuvo la formación de un grupo definido con respecto al grupo externo (European bat lyssavirus). Este grupo fue clasificado en dos subgrupos, uno constituido por muestras procedentes de Puno y Arequipa (subgrupo A), y otro por muestras de Puno (subgrupo B), observándose una identidad nucleotídica de 99,9% en el subgrupo A. CONCLUSIONES.: Los agrupamientos de las secuencias virales muestran que los casos de rabia canina notificados en Arequipa son el resultado de la expansión de rabia canina procedente de la región endémica de Puno.
Assuntos
Nucleoproteínas/genética , Vírus da Raiva/genética , Proteínas Virais/genética , Animais , Cães , PeruRESUMO
RESUMEN Objetivos. Caracterizar la nucleoproteína (N) y establecer el origen del virus de la rabia en canes procedentes de Arequipa. Materiales y métodos. Se analizaron 30 muestras de tejido nervioso procedentes de los departamentos de Arequipa y Puno. Se extrajo el ARN total de las muestras y se sintetizó ADNc para amplificar el gen de la nucleoproteína, secuenciarlo y realizar el análisis bioinformático. Resultados. Se obtuvo la formación de un grupo definido con respecto al grupo externo (European bat lyssavirus). Este grupo fue clasificado en dos subgrupos, uno constituido por muestras procedentes de Puno y Arequipa (subgrupo A), y otro por muestras de Puno (subgrupo B), observándose una identidad nucleotídica de 99,9% en el subgrupo A. Conclusiones. Los agrupamientos de las secuencias virales muestran que los casos de rabia canina notificados en Arequipa son el resultado de la expansión de rabia canina procedente de la región endémica de Puno.
ABSTRACT Objective . To characterize the nucleoprotein (N) and establish the origin of the rabies virus in dogs coming from Arequipa. Materials and Methods. Thirty samples of nervous tissue from the departments of Arequipa and Puno were analyzed. Total RNA was extracted from the samples and cDNA was synthesized to amplify the nucleoprotein gene, sequence it, and perform bioinformatics analysis. Results . A defined group was formed with respect to the external group (European bat lyssavirus). This group was classified into two subgroups, one constituted by samples coming from Puno and Arequipa (subgroup A), and another one by samples from Puno (subgroup B), exhibiting a nucleotide identity of 99.9% in subgroup A. This group was classified in two subgroups, one constituted by samples coming from Puno and Arequipa (subgroup A), and another one by samples from Puno (subgroup B), observing a nucleotide identity of 99.9% in subgroup A. Conclusions. The groupings of viral sequences show that the cases of canine rabies reported in Arequipa are the result of the expansion of canine rabies from the endemic region of Puno.
Assuntos
Animais , Cães , Vírus da Raiva/genética , Proteínas Virais/genética , Nucleoproteínas/genética , PeruRESUMO
Objective. To characterize the nucleoprotein (N) and establish the origin of the rabies virus in dogs coming from Arequipa. Materials and Methods. Thirty samples of nervous tissue from the departments of Arequipa and Puno were analyzed. Total RNA was extracted from the samples and cDNA was synthesized to amplify the nucleoprotein gene, sequence it, and perform bioinformatics analysis. Results. A defined group was formed with respect to the external group (European bat lyssavirus). This group was classified into two subgroups, one constituted by samples coming from Puno and Arequipa (subgroup A), and another one by samples from Puno (subgroup B), exhibiting a nucleotide identity of 99.9% in subgroup A. This group was classified in two subgroups, one constituted by samples coming from Puno and Arequipa (subgroup A), and another one by samples from Puno (subgroup B), observing a nucleotide identity of 99.9% in subgroup A. Conclusions. The groupings of viral sequences show that the cases of canine rabies reported in Arequipa are the result of the expansion of canine rabies from the endemic region of Puno.
RESUMO
El Potos flavus es un mamífero nocturno que habita en bosques neotropicales desde Centroamérica hastaSudamérica. Se realizó un estudio de cuatro casos de rabia en Potos flavus ocurridos desde abril de 2012 en el departamento de Madre de Dios en Perú, captados como parte de la vigilancia epidemiológica. Los análisis realizados en el laboratorio de referencia regional de Madre de Dios determinaron presencia de antígeno del virus de la rabia en tres de las muestras de tejido encefálico, dichos resultados fueron corroborados en el Laboratorio de Zoonosis Virales del Instituto Nacional de Salud del Perú mediante inmunofluorescencia directa, la tipificación no identificó ninguna de las variantes conocidas en murciélagos o en perros. La ocurrencia de cuatro casos de rabia en Potos flavus suma evidencias de la emergencia de un nuevo reservorio del virus de la rabia y que ha sido reportada previamente en el mismo departamento el año 2007. (AU)
The Potos flavus is a nocturnal mammal that lives in neotropical forests from Central America to South America. A study of four cases of rabies in Potos flavus was conducted; these occurred in April 2012 in the Madre de Dios region in Peru and were collected as part of epidemiological surveillance. The analysis performed in the regional reference laboratory of Madre de Dios determined the presence of the rabies virus antigen in three of the brain tissue samples. Results were verified in the Laboratory of Viral Zoonoses of the Peruvian National Institute of Health by direct immunofluorescence. The typification did not identify any of the known variants in bats or dogs. The occurrence of four cases of rabies in Potos flavus adds evidence of the emergence of a new reservoir of the rabies virus previously reported in the same region in 2007. (AU)