Transmissible venereal tumour with encephalic metastasis in dogs.

From January 2000 to December 2023 the Laboratory of Animal Pathology of the Federal University of Campina Grande received 6,218 canine autopsy and biopsy submissions, with six (0.09%) autopsy cases diagnosed as transmissible venereal tumour (TVT) with encephalic metastases. The mean age of affected dogs (four females and two males) was 7 years.

Platynosomum (Trematoda: Dicrocoeliidae) infection in barn owls (Tyto alba) in Northeastern Brazil.

Platynosomum spp. are parasites that inhabit the gallbladder and bile ducts of various mammals and birds worldwide. Most studies of Platynosomum spp.

Osteosarcoma in a free-living yellow armadillo (Euphractus sexcinctus).

An adult male free-living yellow armadillo (Euphractus sexcinctus) was found by hunters and referred for clinical evaluation because of a tumour-like lesion on the carapace. The animal was lethargic and weak with severe dehydration, enophthalmos and cachexia, and was euthanized because of its very poor clinical condition. Necropsy revealed a whitish, exophytic, irregular and moist mass (7 × 6.

Hepatic arteriovenous malformation in a calf.

A case of hepatic arteriovenous malformation is described in a calf that presented with a marked increase in abdominal volume and died 12 h after birth. At necropsy, the calf had marked abdominal distension and haemoperitoneum. The left hepatic lobe was reduced in size and covered by slightly whitish and intensely vascularized membranous tissue.

Clinical, histopathological, and molecular findings for Mycobacterium avium subspecies paratuberculosis (MAP) in dairy goats under semiarid conditions.

The objective of this study was to report the occurrence of Mycobacterium avium subspecies paratuberculosis (MAP) in dairy goats, via description of their clinical presentation, histopathological findings, and molecular identification of the infectious agent. Screening was performed using IS900 real-time PCR (qPCR) in milk samples from 179 properties in the semiarid of Northeast region of Brazil. Pooled milk samples from all lactating goats from processing plants were submitted to molecular diagnosis.

A Retrospective Study of Pythiosis in Domestic Animals in Northeastern Brazil.

Pythiosis is an endemic disease in northeastern Brazil and we now report the epidemiological, clinical and pathological findings in a retrospective study of naturally occurring cases in domestic animals. From January 1985 to December 2020, the Laboratory of Animal Pathology of the Federal University of Campina Grande examined 13,542 tissue samples from necropsies and biopsies. Among these samples, 306 were diagnosed as pythiosis: 195 cases in horses, 75 in sheep, 19 in dogs, six in mules, four in cattle, three in cats, two in goats, one in a donkey and one in an ostrich.

Pythiosis in Equidae in Northeastern Brazil: 1985-2020.

The epidemiologic, clinical, pathologic, microbiological and immunohistochemical findings of pythiosis in equidae in northeastern Brazil are described. From January 1985 to December 2020 the Laboratory of Animal Pathology of the Federal University of Campina Grande received 1,331 tissue samples of equidae, 202 (15.17%) of which were diagnosed as pythiosis.

In vivo Hemostatic Activity of Jatropha mollissima: A Triple-Blinded, Randomized, Controlled Trial in an Animal Model.

Objective: The objective of this study was to evaluate the hemostatic activity of the sap from (Pohl) Baill. in rats.

Materials And Methods: Twenty-four Wistar rats were randomized into four groups ( = 6): the JM25 and JM40 groups were treated with ethanolic extract from the sap of , in a concentration of 25 and 40 mg·mL, respectively; the MO group was treated with Monsel's solution and the control group SC with a 0.

Natural Infection by Leishmania infantum in domestic cats (Felis catus) in a municipality of moderate transmission in the Brazilian semi-arid region.

The main clinical, anatomopathological, and molecular aspects of the infection by Leishmania infantum are described in two cats with multicentric cutaneous, nodular, and ulcerated lesions. The animals were submitted to a clinical examination, followed by serological, molecular and parasitological exams, with culture and isolation of the parasite, and subsequent isoenzymatic characterization. The animals were euthanized and necropsied.

Aural Hematoma Secondary to Hemangiosarcoma in a Domestic Cat-Case Report.

A 7-year-old, white, domestic short hair, female cat was presented with an aural hematoma of the right pinna, which had been partially resected a year previously. A 3 × 4 cm mass, macroscopically similar to an auricular hematoma, was visible on the convex surface and a smaller vascular lesion was present on the ear margin. Cytological examination of the smaller mass was suggestive of hemangiosarcoma, and a diagnosis confirmed by histopathologic and immunohistochemical tests.

In vivo biocompatibility of silicon dioxide nanofilm used as antimicrobial agent on acrylic surface.

the focus ofthis study was to testthe hypothesisthatthere would be no difference betweenthe biocompatibility of silicon dioxide nanofilms used as antimicrobial agents. Sixty male Wistar rats were divided into 4 groups (n=15): Group C (Control,Polyethylene), Group AR (Acrylic Resin), Group NP (Acrylic Resin coated with NP-Liquid), Group BG (Acrylic Resin coated with Bacterlon).the animals were sacrificed with 7,15 and 30 days and tissues analyzed as regardsthe events of inflammatory infiltrate, edema, necrosis, granulation tissue, mutinucleated giant cells, fibroblasts and collagen.

Microbiological, molecular, and histopathological findings in goats experimentally infected with Actinobacillus seminis.

The objective of this study was to experimentally evaluate the pathogenicity of an Actinobacillus seminis isolate named SAAS01 in goats. Animals were challenged with 2 mL of a suspension containing 1,5 × 10 CFU/mL of A. seminis (SAAS01 isolate) through the intrapreputial, epididymis tail, and conjunctival routes.

Histological analysis of biocompatibility of different surgical adhesives in subcutaneous tissue.

The focus of this study was to test the hypothesis that there would be no difference between the biocompatibility of cyanoacrylate-based adhesives in rat subcutaneous tissues. In total, 60 male Wistar rats were used, and divided into four groups (n = 15): Group C (control, PVA-polyvinyl alcohol sponge), Group NO (N-butyl-2-octylcyanoacrylate), Group NH (n-hexyl-cyanoacrylate), and Group EC (Ethyl-cyanoacrylate). The animals were sacrificed after time intervals of 7, 15, and 30 days and tissues were analyzed under optical microscope as regards the events of inflammatory infiltrate, edema, necrosis, granulation tissue, giant cells, young fibroblasts, and collagen formation.

An Update on the Known Host Range of the Brazilian Vaccinia Virus: An Outbreak in Buffalo Calves.

Even nearly forty years after the eradication of smallpox, members of the family continue to be the focus of an increasing number of studies. Among these studies, prominently stands vaccinia virus, an orthopoxvirus that is associated with bovine vaccinia outbreaks. Although more frequently associated with infections in cattle and humans, the host range of vaccinia virus is not restricted only to these hosts.

Cutaneous pythiosis in a donkey (Equus asinus) in Brazil.

Our study describes the clinical, epidemiologic, pathologic, immunohistochemical, and molecular aspects PCR of a case of cutaneous pythiosis in a donkey (Equus asinus) from Brazil. During a dry period, the animal grazed for 4 months around a pond where the vegetation remained green. Skin lesions were nodular, multifocal, and disseminated, mainly involving the legs, ventral chest, and mammary gland.

Acute toxoplasmosis in pigs in Brazil caused by Toxoplasma gondii genotype Chinese 1.

This study reports the clinicopathological, immunohistochemical, and molecular findings from two cases of systemic toxoplasmosis in pigs showing apathy and dyspnea. In the post-mortem examination, severe diffuse necrotizing bronchointerstitial pneumonia with numerous intralesional tachyzoites of Toxoplasma gondii was observed. The lungs had not collapsed but were diffusely reddened, and the parenchyma showed friable whitish subpleural nodules with multifocal to coalescent distribution and diameters of 0.

Poisoning by Ipomoea asarifolia in lambs by the ingestion of milk from ewes that ingest the plant.

Two experiments, each with 10 pregnant ewes (8 treated and 2 controls) were performed to determine if nursing lambs of lactating ewes become intoxicated when the ewes ingest Ipomoea asarifolia but do not show clinical signs themselves. In the first experiment the sheep grazed I. asarifolia in the field while in the second, sheep were maintained in individual bays consuming dry I.

Outbreaks of Vesicular stomatitis Alagoas virus in horses and cattle in northeastern Brazil.

The current article describes outbreaks of vesicular stomatitis (VS) in horses and cattle in Paraiba and Rio Grande do Norte states, northeastern Brazil, between June and August 2013. The reported cases affected 15-20 horses and 6 cattle distributed over 6 small farms in 4 municipalities, but additional data indicated the involvement of a large number of animals on several farms. The disease was characterized by blisters; eruptive lesions in coronary bands, lips, mouth, and muzzle; salivation; claudication and loss of condition.

Rabies in the insectivorous Pallas's mastiff bat (Molossus molossus) in northeastern Brazil.

We describe the pathologic and immunohistochemical findings in five cases of rabies in the insectivorous Pallas's mastiff bat (Molossus molossus) in the city of Patos, state of Paraíba, northeastern Brazil. All cases were found during the day, in different neighborhoods, prostrate and unable to fly. No significant lesions were observed at necropsy or on histologic examination.

Parasites of Psittaciformes and Accipitriformes in Paraíba state, northeastern Brazil.

In this study, we investigated the presence of gastrointestinal helminths in 97 captive birds (Psittaciformes and Accipitriformes) necropsied between June and December 2011 in the state of Paraiba, Brazil. Forty-three birds were infected. Psittaciformes were infected by nematode Ascaridia hermaphrodita (97.

Natural and experimental poisoning of goats with the pyrrolizidine alkaloid-producing plant Crotalaria retusa L.

Crotalaria retusa L. (rattleweed), estimated to contain about 4.96% monocrotaline (MCT) in the seed, was associated with a natural poisoning outbreak in goats.

Pythiosis of the digestive tract in sheep.

Cutaneous and rhinofacial infections by Pythium insidiosum have previously been reported in sheep in Brazil. In the current study, a new form of pythiosis involving the alimentary tract of 2 nursing lambs from 2 different farms in the semiarid region of Brazil is described. The first lamb showed food regurgitation, lethargy, and anorexia, and died 5 days after the presentation of clinical signs.

Identification of parasites in Puffinus puffinus (Birds, Procellariiformes) from Northeastern Brazil.

Studies on the parasitic fauna of migratory sea birds of the Puffinus genus are scarce. Therefore, the aim of this study was to identify parasites of 16 specimens of Puffinus puffinus (Procellariiformes, Procellariidae) that died during the period of June 2011 to December 2011 at the Wildlife Screening Center (CETAS) of the Brazilian Institute of Environment and Natural Resources (IBAMA) in Cabedelo, Paraíba. During necropsy, biting lice and/or gastrointestinal helminths were collected in seven (43.

Junctional epidermolysis bullosa in a calf.

A case of epidermolysis bullosa in a calf descendent from a Gir bull and a Gir crossbreed cow is reported. The calf presented with exungulation of all hooves, widespread erosions and crusts on the skin, and ulcers in the oral cavity. Histologically, the skin showed subepidermal separation with clefts occasionally filled with eosinophilic clear fluid, cellular debris, or neutrophils.

Meningoencephalitis caused by Naegleria fowleri in cattle of northeast Brazil.

Primary amoebic meningoencephalitis is an acute disease of the central nervous system of humans and animals caused by Naegleria fowleri. This report describes a case of meningoencephalitis caused by N. fowleri in a crossbred, one-year-old bovine with progressive neurological signs.