Dicistrovirus de la comunidad de polinizadores encontrados en palomas: ¿un nuevo reservorio viral?
; Echeverria, Maria Gabriela
; Origlia, Javier Anibal Otros responsables
Fecha
08/2022
Editorial
Universidad Nacional Mayor de San Marcos. Facultad de Medicina Veterinaria
Revista
Revista de Investigaciones Veterinarias del Perú
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Institución organizadora
ISSN
1609-9117
eISSN
1682-3419
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Español
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Resumen
Los Dicistrovirus son una familia de virus que afectan invertebrados de importanciasanitaria y económica. Las palomas son, asimismo, reservorios naturales de patógenosque han causado enfermedades emergentes y reemergentes en el humano. Se capturaron25 palomas (24 Columba livia y una Zenaida auriculata) en La Plata, Buenos Aires,entre mayo y junio de 2019. Se tomaron hisopados de orofaringe/coana y luego cloacalde cada ave. Se realizó la extracción de ARN con Trizol®. Se utilizaron 5 μl del ARN totalpara la síntesis de ADN complementario (ADNc). La reacción se llevó a cabo utilizandouna PCR múltiple (mPCR) como metodología de screening en un volumen final de 25 μl.Esta PCR múltiple amplifica seis virus. Como control positivo se utilizó una muestrapreviamente aislada y caracterizada en el laboratorio de los autores como virus de laparálisis aguda israelí (IAPV), y cuya presencia fue confirmada mediante screening utilizandocebadores específicos, para una PCR simple, que amplifican 185 pb. Quince de lasmuestras (60%) fueron positivas a IAPV tanto en la PCR múltiple como en la PCR específica. Se requiere de estudios adicionales para explorar la patogenicidad de los dicistrovirusen las palomas y determinar si estos virus son los mismos que afectan a la comunidad depolinizadores.
Dicistroviruses are a family of viruses that affect invertebrates of sanitary and economic importance. Pigeons are also natural reservoirs of pathogens that have caused emerging and re-emerging diseases in humans. Twenty-five pigeons (24 Columba livia and one Zenaida auriculata) were captured in La Plata, Buenos Aires, between May and June 2019. Oropharyngeal/choana and then cloacal swabs were taken from each bird. RNA extraction was performed with Trizol®. For the analysis, 5 µl of total RNA was used for complementary DNA (cDNA) synthesis. The reaction was carried out using multiplex PCR (mPCR) as screening methodology in a final volume of 25 µl. This multiplex PCR amplifies six viruses. As a positive control, a sample previously isolated and characterized in the authors’ laboratory as Israeli acute paralysis virus (IAPV) was used, and whose presence was confirmed by screening using specific primers, for a simple PCR, that amplify 185 bp. Fifteen of the samples (60%) were positive for IAPV in both the multiplex PCR and the specific PCR. Additional studies are required to explore the pathogenicity of dicistroviruses in pigeons and to determine if these viruses are the same ones that affect the pollinator community.
Dicistroviruses are a family of viruses that affect invertebrates of sanitary and economic importance. Pigeons are also natural reservoirs of pathogens that have caused emerging and re-emerging diseases in humans. Twenty-five pigeons (24 Columba livia and one Zenaida auriculata) were captured in La Plata, Buenos Aires, between May and June 2019. Oropharyngeal/choana and then cloacal swabs were taken from each bird. RNA extraction was performed with Trizol®. For the analysis, 5 µl of total RNA was used for complementary DNA (cDNA) synthesis. The reaction was carried out using multiplex PCR (mPCR) as screening methodology in a final volume of 25 µl. This multiplex PCR amplifies six viruses. As a positive control, a sample previously isolated and characterized in the authors’ laboratory as Israeli acute paralysis virus (IAPV) was used, and whose presence was confirmed by screening using specific primers, for a simple PCR, that amplify 185 bp. Fifteen of the samples (60%) were positive for IAPV in both the multiplex PCR and the specific PCR. Additional studies are required to explore the pathogenicity of dicistroviruses in pigeons and to determine if these viruses are the same ones that affect the pollinator community.
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