Detection of rabies virus in organs unrelated to the central nervous system of experimentally-inoculated vampire bats

María Luisa Méndez-Ojeda, Edith Rojas-Anaya, Jose Francisco Morales-Álvarez, Graciela Tapia-Pérez, Gerardo Suzán, Osiris Gaona Pineda, Rodrigo A. Medellín-Legorreta, Charles E Rupprecht, Elizabeth Loza-Rubio

Resumen


The aim of this research was to detect rabies virus in peripheral tissues in captive vampires. Vampire bats were inoculated with 106 MICLD50 of homologous rabies virus. Bats displayed clinical signs of rabies beginning on d 8 until the 19th d post-inoculation (pi). Rabies virus antigens were found in the brain of all rabid bats. Viral RNA was detected in brain, salivary gland and tongue tissue by RT-PCR and nested PCR (nPCR). Viral genome was also detected in organs unrelated to the central nervous system. Rabies virus was not detected in saliva nor documented from any tissues without occurrence of viral antigens in the brain. Host humoral response was most pronounced via the induction of viral neutralizing antibodies (VNA) from d 8 to 20 pi, having a peak at d 14 with 0.9 IU. Antibody levels were variable, but tended to remain high after inoculation, showing significant differences to the negative control group (P=0.001). This research is one of the few recent studies focused upon Desmodus rotundus and contributes to the basic knowledge of rabies virus pathogenesis, which is required for an understanding of perpetuation in a major viral reservoir in Latin America.


Palabras clave


Desmodus rotundus; Pathogenesis; Rabies; Vampire bat; Zoonosis.

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Referencias


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DOI: https://doi.org/10.22319/rmcp.v9i3.4247

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