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Viral research in Brazilian owls (Tyto alba and Rhinoptynx clamator) by transmission electron microscopy / Investigación viral en buhos brasileños (Tyto alba y Rhinoptynx clamator) a través de microscopía electrónica de transmisión
Catroxo, M. H. B; Taniguchi, D. L; Melo, N. A; Milanelo, L; Petrella, S; Alves, M; Martins, A. M. C. R. P. F; Rebouças, M. M.
  • Catroxo, M. H. B; Biological Institute of São Paulo. Laboratory of Electron Microscopy. BR
  • Taniguchi, D. L; Biological Institute of São Paulo. Laboratory of Electron Microscopy. BR
  • Melo, N. A; Biological Institute of São Paulo. Laboratory of Electron Microscopy. BR
  • Milanelo, L; Tiete Ecological Park. São Paulo. BR
  • Petrella, S; Adolfo Lutz Institute. São Paulo. BR
  • Alves, M; Tiete Ecological Park. São Paulo. BR
  • Martins, A. M. C. R. P. F; Biological Institute of São Paulo. Laboratory of Electron Microscopy. BR
  • Rebouças, M. M; Biological Institute of São Paulo. Laboratory of Electron Microscopy. BR
Int. j. morphol ; 28(2): 627-636, June 2010. ilus
Article in English | LILACS | ID: lil-577164
ABSTRACT
The barn-owl (Tyto Alba) and striped-owl (Rhinoptynx clamator) belong respectively to the families Tytonidae and Strigidae. Avian paramyxoviruses have been isolated from a variety of species of wild and domestic birds wordlwide causing diverse clinical symptoms and signs. Paramyxoviruses belong to the family Paramyxoviridae and Avulovirus genus, including nine serotypes (APMV 1 to 9). The lymphoid leukosis is a retrovirus-induced neoplasia. The avian retroviruses belong to the Retroviridae family and to the Alpharetrovirus genus. Coronaviruses can cause respiratory and enteric disease in several species of birds. They belong to the Coronaviridae family and to the groups 3a e 3c. In this study, we describe the presence of viruses in four owls, two barn owls (Tyto alba) and two striped owls (Rhinoptynx clamator), rescued from tree-lined streets of Sao Paulo, Brazil and sent to the Recovery Center of Wild Animals of the Tietê Ecological Park, where the animals died. Fragments of lung, liver and small intestine of these birds were processed for transmission electron microscopy utilizing negative staining (rapid preparation), immunoelectron microscopy and immunocitochemistry techniques. Under the transmission electron microscopy paramyxovirus particles, pleomorphic, roughly spherical or filamentous, measuring 100 to 500 nm of diameter containing an envelope covered by spikes, an herring-bone helical nucleocapsid-like structure, measuring 15 to 20 nm in diameter, were visualized in the samples of lung, liver and small intestine of all owls. In small intestine samples of the two striped-owl (owls 3 and 4) it was detected pleomorphic coronavirus particles with a diameter of 75-160 nm containing a solar corona-shaped envelope, with projections of approximately 20 nm of diameter. In liver fragments of one striped-owl (owl 4) pleomorphic particles of retrovirus with a diameter of 80-145 nm containing an envelope with short projections and diameter of 9 nm were....
RESUMEN
La lechuza (Tyto Alba) y el búho de orejas (Rhinoptynx clamator) pertenecen respectivamente a las familias Strigidae y Tytonidae. El paramixovirus aviario se ha aislado de especies de vida silveste como las aves domésticas por todo el mundo, causando diversos síntomas clínicos. El paramixovirus pertenece a la familia Paramyxoviridae y al Avulovirus genus que incluye nueve serotipos (APMV 1 a 9). La leucosis linfoide es una neoplasia inducida por retrovirus. Los retrovirus aviarios pertenecen a la familia Retroviridae y el género Alpharetrovirus. Los coronavirus pueden causar enfermedades respiratorias y entéricas en varias especies de aves. Ellos pertenecen a la familia Coronaviridae y a los grupos 3a y 3c. En este estudio, se describe la presencia del virus en cuatro búhos, dos lechuzas (Tyto alba) y dos búhos de orejas (Rhinoptynx clamator), rescatados de las calles arboladas de São Paulo, Brasil y enviados al Centro de Recuperación de Animales Silvestres del Parque Ecológico de Tietê, donde hubo murieron los animales. Fragmentos de pulmón, delhígado y del intestino delgado de estas aves fueron procesados para microscopía electrónica de transmisión utilizando tinción negativa (preparación rápida), inmunomicroscopía y técnicas de inmunocitoquímica. Bajo microscopía electrónica de transmisión, partículas de paramixovirus, pleomórficas, aproximadamente esféricas o filamentosas, de 100 a 500 nm de diámetro con un sobre cubierto por espigas, y nucleocápside helicoidal con características de espiga, midiendo 15 a 20 nm de diámetro, fueron visualizadas en las muestras de pulmón, hígado e intestino delgado de todos los búhos. En muestras de intestino delgado de dos búho de orejas (búhos 3 y 4) se detectaron partículas pleomórficas con coronavirus de un diámetro de 75-160 nm con un sobre con forma de corona solar, con proyecciones de aproximadamente 20 nm de diámetro. En el hígado de un búho de orejas (búho 4) se observaron partículas pleomórficas de retrovirus con ...
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Full text: Available Index: LILACS (Americas) Main subject: RNA Viruses / Strigiformes Limits: Animals Country/Region as subject: South America / Brazil Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Adolfo Lutz Institute/BR / Biological Institute of São Paulo/BR / Tiete Ecological Park/BR

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Full text: Available Index: LILACS (Americas) Main subject: RNA Viruses / Strigiformes Limits: Animals Country/Region as subject: South America / Brazil Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Adolfo Lutz Institute/BR / Biological Institute of São Paulo/BR / Tiete Ecological Park/BR