Navegando por Assunto "dog"
Agora exibindo 1 - 4 de 4
Resultados por página
Opções de Ordenação
Item Avaliação histológica e ultra-sonográfica de fígado de cadelas submetidas a programas de ganho e perda de peso(Universidade Federal de Goiás, 2008-11-27) COSTA, Rogério de Oliveira; FIORAVANTI, Maria Clorinda Soares; http://lattes.cnpq.br/8772502020076257; BORGES, Naída Cristina; http://lattes.cnpq.br/9181279951885005; ARAÚJO, Eugênio Gonçalves de; http://lattes.cnpq.br/3919777570059928The objective of this experiment was to evaluate the histology of livers of castrated bitches during sequential periods of weight gain and loss, through analysis of samples obtained by ultrasound guided biopsies. The experimental groups were composed by 30 bitches submitted to overweight by using of hypercaloric ration, from these animals were selected 14 to be submitted to two differents weight loss programs with seven receiving hypocaloric ration and seven receiving normocaloric ration. Periodic ultrasonographic analysis was employed to evaluate liver structure during the initial, obesity and weight loss stages, and revealed that none of the animals displayed altered images and no lesions at any stages. Histological examination revealed that no animals showed (0%) fibrosis or fat degeneration, 13 animals (92,8%) presented mild inflammation and one animal (7,2%) had severe inflammation. Nine animals (64,2%) did not have any kind of necrosis, four animals (28,5%) had mild necrosis and one animal (7,2%) had moderate necrosis. At the end of obesity stage, no animal showed fibrosis or fat degeneration and all 14 animals had mild inflammation. Ten dogs (71,5%) showed no signs of necrosis and four animals (28,5%) with light necrosis. Finally, in both groups in the weight loss stage no one animal (0%) with fibrosis, fat degeneration or necrosis and 14 animals (100%) with light inflammation. The group 2 had no animal had fibrosis, fat degeneration or necrosis and all dogs showed light inflammation. The results allowed the establishment of comparative parameters between ultrasonographic liver images and histological hepatic analysis in different stages of obesity and weight loss.Item Implante intraperitonial de tela de polipropileno revestida de hidrogel de poli (2-hidroxietil metacrilato) em cães aspecto histológico(Universidade Federal de Goiás, 2010-10-24) SILVA, Daniel Barbosa da; MOURA, Veridiana Maria Brianezi Dignani de; http://lattes.cnpq.br/8773201078957745; PAULO, Neusa Margarida; http://lattes.cnpq.br/7949273598509043Abdominal wall defects may occur in fairly all animal species, and frequently demand corrective surgical treatment including implants of meshes, such as polypropylene. However, this biomaterial is not free from complications, what stimulates constant researches for new biomaterials that present certain advantages. Due to its well known biocompatibility, poliHEMA hydrogel was the chosen biomaterial for experimental abdominal wall implant associated to polypropylene mesh. This essay compared tissue responses to the employment of polypropylene mesh alone (group PP) and polyHEMA Hydrogel film associated to polypropylene mesh (group PH) on the correction of induced abdominal wall defects on bitches. Twelve mongrel adult female dogs, weighting from 10 to 20 kg, were divided in two equal groups. The animals from group PP received the polypropylene mesh implant whilst those from group PH received polyHEMA hydrogel coated polypropylene mesh to replace the abdominal transverse muscle. Six animals from each group were submitted to surgical procedure to remove the meshes at 30 and 60 days of the postoperative period. Tissue repairing phenomena such as: chronic inflammatory reaction, giant cell presence (foreign body chronic granulomatous inflammatory reaction) and connective tissue proliferation were microscopically evaluated. It may be concluded that polyHEMA hydrogel as a coating agent on polypropylene mesh implanted onto abdominal wall of female dogs triggers greater deposition of type I collagen, than polypropylene mesh alone.Item Sulfato de vincristina no tratamento do tumor venéreo transmissível frente à caracterização citomorfológica(Universidade Federal de Goiás, 2009-12-18) SIMERMANN, Nívia Faria Silva; MOURA, Veridiana Maria Brianezi Dignani de; http://lattes.cnpq.br/8773201078957745; FIORAVANTI, Maria Clorinda Soares; http://lattes.cnpq.br/8772502020076257; BRITO, Luiz Augusto Batista; http://lattes.cnpq.br/3212353728321020The transmissible venereal tumor (TVT) is among the most common cancers in dogs in Brazil. This is a sexually transmitted cancer through a mechanism of transplantation of viable tumor cells, it has high incidence among dogs of both sexes in reproductive age, with high occurrence in areas of high concentration of dogs with poor control of reproduction. The diagnosis made in the routine of clinical medicine is usually based only on clinical symptoms and the chemotherapy of choice has been the vincristine sulfate. This drug has been shown in most cases a good response to treatment with complete regression of the tumor, but there are also cases where the tumor appears resistant to treatment. This study aimed to demonstrate the practicality of using fine needle aspiration cytology as a method of diagnosis and cytomorphologic classification, being effective and safe as well as measuring the response of different cytomorphologic groups forward to treatment with vincristine sulfate. Also evaluating the clinical response, hematologic and biochemical tests using serum liver function (ALT) and renal (creatinine), in the therapy instituted. Were evaluated and treated 18 dogs of both sexes, carrying TVT, which received six consecutive weeks during the administration of vincristine sulfate in the dosage of 0.03 mg / kg administered intravenously. The animals underwent weekly prior to medication, clinical assessment, haematological and biochemical. It was observed in this study that cytological examination is a simple technique, minimally invasive and painless, and a safe method that provides no risk to the patient's life and does not require the use of sophisticated equipment, sedation or anesthesia for their achievement. Animals carrying the TVT plasmacytoid type, had higher rate of tumor resistance to treatment in relation to established groups and linfocytic mixed, showing a greater resistance to treatment with this group of vincristine sulfate. The efficiency of response to treatment was presented by the linfocytic group. The vincristine sulfate showed few side effects, low hematological, hepatic and renal toxicity, it is therefore an effective option in the control of transmissible venereal tumor in not resistant cases.Item Expressão de fator de crescimento transformador Beta e inibidores teciduais de metaloproteinases 1 e 2 em próstatas caninas normais e com lesões proliferativas(Universidade Federal de Goiás, 2012-03-08) TOLEDO, Denise Caroline; MENEZES, Liliana Borges de; http://lattes.cnpq.br/2012543423092393; BRITO, Luiz Augusto Batista; http://lattes.cnpq.br/3212353728321020; MOURA, Veridiana Maria Brianezi Dignani de; http://lattes.cnpq.br/8773201078957745The canine gland has drawn interest for research due to its similarities with the human prostate and the great incidence of lesions. Moreover, the canine prostate shows high incidence of diseases. The main lesions that affect the prostate are prostatitis, benign prostatic hyperplasia (BPH), cysts and adenocarcinoma. Recently attention has been given to lesions considered premalignant such as prostatic intraepithelial neoplasia (PIN) and proliferative inflammatory atrophy (PIA), both studied in the human gland and also found in the canine prostate. In order to evaluate the development of prostate cancer starting as premalignant lesions, some immunohistochemical markers are employed, such as tissue inhibitors of metalloproteinases (TIMP), which have a key role in regulating the catalytic action of metalloproteinases (MMP), and transforming growth factor-β (TGF-β), that induces angiogenesis and inhibits cell proliferation and is considered a mediator of prostate growth. The objective of this study was to investigate the expression of TIMP-1, TIMP-2 and TGF-β in canine normal prostate tissue and with proliferative lesions. For this, 150 adult canine prostates were obtained from postmortem examinations. After microscopic evaluation 54 glands, compatible with normal, epithelial BPH, stromal BPH, PIA, PIN and adenocarcinoma were selected and used to make tissue microarray block (Tissue Microarray - TMA). TMA slides were subjected to immunohistochemistry with anti-TIMP-1, anti-TIMP-2 and anti-TGF-β, to assess staining intensity of epithelial cells and stromal cells.Cytoplasmatic staining of canine prostate cells by TIMP-1, TIMP-2 and TGF-β was observed, with TIMP-1 and TIMP-2 being more expressed in premalignant and malignant lesions, while TGF-β was expressed mainly by normal tissue and BPH. Furthermore, there were differences in the expression between epithelial and stromal cells.