ESACB - Escola Superior Agrária
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Browsing ESACB - Escola Superior Agrária by Field of Science and Technology (FOS) "Ciências Agrárias::Ciências Veterinárias"
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- Histopathological findings and molecular diagnosis of Nocardia spp. in wild mammalsPublication . Matos, Manuela; João, S.; Matos, Ana; Figueira, Luís Manuel Faria; Cardoso, Luis; Coelho, Ana Cláudia; Pinto, Maria de LurdesNocardiosis is an emerging zoonosis caused by Nocardia spp. bacteria. The disease is linked to infections in immunocompromised individuals, being potentially lethal when it turns systemic. The development of reliable and valid diagnostic methods is crucial to the identification of these pathogenic agents, particularly in wild mammals, which are potential reservoirs in the wildlife. A convenience sample of 114 wild mammals belonging to the orders Canidae, Cervidae, Erinaceidae, Herpestidae, Mustelidae, Suidae, and Viverridae were studied.
- Screening wild birds for tick-borne zoonotic pathogens in PortugalPublication . Loureiro, Filipa; Mesquita, João R.; Cardoso, Luis; Santos-Silva, S.; Moreira, G.; Bento, J. T.; Silva, F.; Barradas, P. F.; Matos, M.; Matos, Ana Cristina; Coelho, A. C.Wild birds may be involved in the transmission of agents of infectious diseases, including zoonoses, a circumstance which raises a number of public and animal health issues. Migratory bird species play a significant role in the introduction of tick-borne pathogens to new geographic areas, contributing to the dissemination of various etiological agents. This preliminary study aimed to assess the occurrence of four potentially zoonotic pathogens (Hepatozoon spp., Borrelia spp., Babesia spp. and Theileria spp.) in the wild birds of Portugal. Blood and tissue samples were taken from 103 birds admitted at wildlife rehabilitation centers. Through the use of conventional PCR, our findings indicate no evidence of the circulation of these pathogens among the studied bird populations in the region. In the One Health context, it is relevant to understand how faraway avian populations play a role in the epidemiology of infectious diseases. Further molecular studies are needed to deepen the knowledge of avian piroplasmosis, borreliosis and hepatozoonosis.
- Serological evidence of Coxiella burnetii exposure in hunting dogs in Portugal.Publication . Pires, Humberto; Cardoso, Luis; Lopes, Ana Patrícia; Fontes, Maria da Conceição; Matos, Manuela; Santos Pintado, Cristina Maria Baptista; Figueira, Luís Manuel Faria; Mesquita, João R.; Matos, Ana; Coelho, Ana CláudiaCoxiella burnetii is a γ-Proteobacteria that is the etiologic agent of Q fever, a worldwide zoonosis. The role of dogs in the transmission of C. burnetii to humans is uncertain, and extensive seroprevalence studies of dogs have previously not been conducted in Portugal. A serologic survey was conducted for antibodies to C. burnetii in a sample of 90 hunting dogs from east-central Portugal, namely the municipalities of Proença-a-Nova and Castelo Branco, during the hunting season of 2021.