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1.
Artigo em Inglês | MEDLINE | ID: mdl-33802554

RESUMO

Leptospirosis is a worldwide-spread zoonosis causing disease and death in dogs and in humans. A Leptospiral infection has been recorded in several wild carnivore species in Europe, but tissue pathological changes were not commonly described. The Grey wolf (Canis lupus) has been expanding its distribution range in north-eastern Italy during the last decade. A young wolf, representing the first individual handled in the region, was found road-killed and then submitted to necropsy. Pathological changes included erosive lesions of gingival mucosa, mild liver enlargement, and multifocal degenerative-necrotic areas along with hyperemic reactive lesions; multifocal interstitial nephritis and multifocal lung hemorrhages were observed. A Polymerase Chain Reaction (PCR) able to detect pathogenic species of Leptospira performed on a kidney sample was positive. Serological reactions for serogroup Gryppotyphosa (1:6400), Pomona (1:800), and Icterohaemorrhagiae (1:200) were evidenced by MAT. Genotyping by Multilocus Sequence Typing (MLST) performed on detected Leptospira characterized it as belonging to Sequence Type (ST) 117, which refers to L. kirschneri, serogroup Pomona, serovar Mozdok. Regardless of the role of Leptospira infection as an eventual predisposing factor to the road killing of this wolf, to the best of the authors' knowledge, this is the first report of Leptospira-induced pathology in a wolf in Europe. Surveys on Leptospira infection in free-ranging wildlife species should be pursued in order to achieve further epidemiological knowledge on the circulation of the Leptospira strain.


Assuntos
Leptospira , Leptospirose , Lobos , Animais , Cães , Exposição Ambiental , Europa (Continente) , Itália/epidemiologia , Leptospira/genética , Leptospirose/epidemiologia , Leptospirose/veterinária , Tipagem de Sequências Multilocus , Sorogrupo
2.
Ticks Tick Borne Dis ; 7(5): 853-858, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27150590

RESUMO

Cytauxzoonosis is an emerging, tick-transmitted, protozoan disease affecting domestic and wild felids and caused by Cytauxzoon felis, Cytauxzoon manul and Cytauxzoon spp. This study aimed to determine the presence of infection with Cytauxzoon spp. in Felis silvestris silvestris in Italy, in order to enhance the comprehension of its pattern distribution among domestic cat populations. In addition, wildcats were tested for other endemic vector-borne pathogens in Italy. The carcasses of 21 F. s. silvestris were collected from central and northern regions of Italy. All the animals were submitted to necropsy and samples of the spleens were collected. Cytauxzoon infection was surveyed by a conventional PCR amplifying a portion of the SSU-rDNA of species of Piroplasmida. The samples were also screened for Anaplasma spp., Ehrlichia spp., Rickettsia spp., Babesia spp., Theileria spp., and Leishmania spp. using SYBR Green Real-Time PCR (rPCR) assays. Four animals (19%) were positive for Piroplasmida-PCR assay and three sequenced amplicons were obtained (14.3%), clustering with the Italian, Spanish, French and Romanian Cytauxzoon spp. isolates and with C. manul found in Mongolia. The samples were negative for the other pathogens screened. The present results showed that Cytauxzoon spp. may infect both F. s. silvestris and F. s. catus.


Assuntos
Animais Selvagens/parasitologia , Felis/parasitologia , Piroplasmida/isolamento & purificação , Infecções Protozoárias em Animais/epidemiologia , Infecções Protozoárias em Animais/parasitologia , Anaplasma/genética , Animais , Babesia/genética , Coccídios/genética , DNA Ribossômico , Vetores de Doenças , Itália/epidemiologia , Filogenia , Piroplasmida/genética , Piroplasmida/fisiologia , Infecções Protozoárias em Animais/transmissão , Reação em Cadeia da Polimerase em Tempo Real , Rickettsia/genética , Theileria/genética
3.
Avian Pathol ; 38(3): 229-31, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19468940

RESUMO

Squamous cell carcinoma (SCC) or avian keratoacanthoma is a neoplastic skin lesion of unknown aetiology that has been well described in birds. Some studies have reported that poxviruses may contribute to the onset of SCC. Here we describe a case of SCC on the underside of a pelican's foot. Histologically, the tumour consisted of irregular cords of pleomorphic epithelial cells that invaded the adjacent tissues. Additionally, keratinized epithelial cells and moderate numbers of keratin pearls were observed. Intracytoplasmic inclusions, a characteristic of this virus, were observed in some of these cells, and viral particles were characterized by electron microscopy. Although the aetiology of the carcinoma in this case may have been secondary to chronic focal trauma, the possibility of a latent or chronic form of fowlpox should be considered in the pathogenesis of the lesion.


Assuntos
Doenças das Aves/patologia , Carcinoma de Células Escamosas/veterinária , Doenças do Pé/veterinária , Vírus da Varíola das Aves Domésticas/ultraestrutura , Corpos de Inclusão/patologia , Neoplasias Cutâneas/veterinária , Animais , Doenças das Aves/virologia , Aves , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/virologia , Doenças do Pé/patologia , Doenças do Pé/virologia , Microscopia Imunoeletrônica , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/virologia
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