Qualitative and quantitative evaluation of the ventricular system and brain parenchyma in healthy dogs of different skull conformation on computed tomography scans.

This study aimed to perform quantitative and qualitative evaluations of the lateral and third ventricles, and brain parenchyma, in healthy dogs of different skull conformations on CT scans. Forty-five adult client-owned dogs were divided into three groups according to skull conformation: G1 (dolichocephalic)-15 German Shepherds; G2 (mesaticephalic)-15 Rottweilers; G3 (brachycephalic)-15 Boxers. Transverse plane images were used for quantitative and qualitative evaluations of the lateral ventricles and third ventricle, and pre- and post-contrast brain parenchyma. The height of both ventricles and brain was measured at the level of the interthalamic adhesion. Ventricle height, brain height, and ventricle/brain height ratio were statistically higher in G3 compared with G1 and G2 that were similar. The third ventricle was visible but unmeasurable in five dogs from G1 and three from G2. In G3, all dogs had third ventricle visible and measurable in all images. Asymmetric ventricles were seen in five dogs in Group 1 and Group 2, and seven in Group 3. Brain parenchyma had homogenous density in 80% of the dogs in all groups. Contrast enhancement of the rostral midline was visualized in all dogs. In conclusion, brain CT scans of healthy dogs showed that the qualitative data were similar among groups, but lateral ventricle and brain measurements in brachycephalic dogs differed from the dolichocephalic and mesaticephalic dogs.

Use of hyaluronic acid associated with triamcinolone acetonide or ozone gas in the treatment of induced osteoarthritis in rabbits.

PURPOSE: To evaluate the effects of the intra-articular application of hyaluronic acid associated with triamcinolone acetonide, and ozone gas in the treatment of induced osteoarthritis in rabbit's stifles. METHODS: Twenty-one Norfolk rabbits were submitted to cranial cruciate ligament transection of the left stifle. After six weeks of the surgery, the rabbits were randomized assigned into three groups: G1 (control) - saline solution (0.9%); G2 - hyaluronic acid associated with triamcinolone; G3 - ozone gas, submitted to three intra-articular applications every seven days. RESULTS: Significant differences occurred: osteophytes at medial femoral condyle (G2 > G1, G2 > G3) on radiography exam; thickening of the medial condyle (G1 > G3, G2 > G3) on ultrasound exam; osteophytes at lateral tibial condyle (G2 > G1, G2 > G3), and medial femoral condyle (G1 > G2, G3 > G1) on computed tomography. Histologically, mean values of chondrocytes in the femur and tibia in G3 and G2 were statistically lower. CONCLUSIONS: The intra-articular injection of hyaluronic acid associated with triamcinolone accentuated degenerative joint disease by imaging and macroscopic evaluations, and by histological findings, this treatment and the ozone gas treatment showed similar effects and were inferior to the saline solution (0.9%).

Use of hyaluronic acid associated with triamcinolone acetonide or ozone gas in the treatment of induced osteoarthritis in rabbits

Purpose: To evaluate the effects of the intra-articular application of hyaluronic acid associated with triamcinolone acetonide, and ozone gas in the treatment of induced osteoarthritis in rabbit’s stifles.Methods: Twenty-one Norfolk rabbits were submitted to cranial cruciate ligament transection of the left stifle. After six weeks of the surgery, the rabbits were randomized assigned into three groups: G1 (control) – saline solution (0.9%); G2 – hyaluronic acid associated with triamcinolone; G3 – ozone gas, submitted to three intra-articular applications every seven days. Results: Significant differences occurred: osteophytes at medial femoral condyle (G2 > G1, G2 > G3) on radiography exam; thickening of the medial condyle (G1 > G3, G2 > G3) on ultrasound exam; osteophytes at lateral tibial condyle (G2 > G1, G2 > G3), and medial femoral condyle (G1 > G2, G3 > G1) on computed tomography. Histologically, mean values of chondrocytes in the femur and tibia in G3 and G2 were statistically lower. Conclusions: The intra-articular injection of hyaluronic acid associated with triamcinolone accentuated degenerative joint disease by imaging and macroscopic evaluations, and by histological findings, this treatment and the ozone gas treatment showed similar effects and were inferior to the saline solution (0.9%).

DEA 1. 1 blood group frequency in dogs attended at the veterinary hospital of UFMT (Sinop/MT), risk of DEA 1 negative dog sensitization and occurrence of hemolytic transfusion reaction in a second blood transfusion / Frequência do grupo sanguíneo DEA 1. 1 em cães atendidos no Hospital Veterinário da UFMT (Sinop/MT), risco de sensibilização de cães DEA 1 negativos e da ocorrência de reação transfusional hemolítica por ocasião de uma segunda transfusão de sangue

The goal of this research was to identify the frequency of the DEA 1.1 blood group in dogs from Sinop, Mato Grosso, Brazil, to help in the recruitment of compatible blood donors and recipients, and to assess the risk of transfusion reactions in previously sensitized dogs. Also, from the obtained results, to pick potential blood donors to compose a data bank. 195 adult dogs (1 to 4 years old), males and females, mongrel and purebred dogs were screened at the Veterinary Hospital of the University of Mato Grosso. The DEA 1.1 blood typing was performed using commercially available immunochromatographic strip for DEA 1.1 (Quick Test DEA 1.1, Alvedia, Lyon, France). The results showed a general frequency of 65% for DEA 1.1 positive dogs (n = 126) and 35% for DEA 1 negative dogs (n = 69). The general risk of sensitization of a DEA 1 negative dog following a first transfusion with DEA 1.1 positive blood was 23%, while the risk of this sensitized recipient to receive DEA 1.1 positive blood in a second transfusion and to develop an acute hemolytic reaction was calculated to be 5%. The blood typing of the dogs allowed their classification as DEA 1 typed blood donors, in a preliminary data bank, and also ensured the safety of blood transfusions.

Objetivou-se identificar a frequência do grupo sanguíneo DEA 1.1 em cães de Sinop, Mato Grosso, Brasil, para auxiliar a seleção de doadores e receptores de sangue compatíveis e, adicionalmente, avaliar o risco de reações transfusionais em cães sensibilizados. Além disso, a partir dos resultados obtidos, selecionar potenciais doadores de sangue para compor um banco de dados. Um total de 195 cães adultos (de 1 a 4 anos de idade), machos e fêmeas, mestiços e puros, que nunca haviam recebido transfusões de sangue, foram triados no Hospital Veterinário da Universidade do Mato Grosso. A tipagem sanguínea DEA 1.1 foi realizada utilizando-se ensaio imunocromatográfico comercialmente disponível para DEA 1.1 (Quick Test DEA 1.1, Alvedia, Lyon, França). Os resultados demonstraram uma frequência geral de 65% para cães DEA 1.1 positivos (n = 126) e 35% para cães DEA 1 negativos (n = 69). O risco geral de sensibilização de cães DEA 1 negativos após uma primeira transfusão com sangue DEA 1.1 positivo foi calculado em 23%, enquanto o risco deste receptor sensibilizado receber sangue DEA 1.1 positivo em uma segunda transfusão e desenvolver uma reação hemolítica aguda foi calculado em 5%. A tipagem sanguínea dos cães permitiu sua inserção como doadores de sangue tipados para o grupo DEA 1 em um banco de dados preliminar e garantiu a segurança das transfusões de sangue.