Fator de crescimento do endotélio vascular e do transportador de glicose 1 em cães com ceratose actínica e carcinoma de células escamosas

• Autor(a) principal: Palacios Junior, Reinaldo Juan Garrido [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/122155
• topic: Cão - Doenças; Neovascularização; Metabolismo; Pele - Cancer; Carcinoma de celulas escamosas; Tumores em animais; Skin Cancer

The skin exposed to UV light undergoes changes in morphology and function, this influences the local production of cytokines and impairs the antigen recognition and processing. The chronic sun exposure on the skin of dogs with ages of eight to ten years, short hair coat and clear, with little pigmentation and glabra, usually progresses to actinic keratosis (AK) and culminates in cutaneous squamous cell carcinoma (SCC). Essential part of the malignant phenotype is angiogenesis, which is the promoter Vascular Endothelial Growth Factor (VEGF) that plays on endothelial cells. Additionally angiogenesis, the growth of neoplastic cells requires increasing cell membrane proteins involved in nutrition, as the Glucose Transporter 1 (GLUT 1), which is essential for survival and proliferation of tumor cells. Thus, we proposed to investigate the value of VEGF and GLUT 1 in tumor progression employing for this skin of dogs concomitantly presented the AK (AK group), SCC (SCC Group) absent from skin diseases and skin (Lesions distant Group), comparing them with the skin of healthy dogs without histopathological changes (Control Group); also evaluate whether treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) may interfere with markings of antibodies, as well as evaluating the intensity of these markings differed in the skin of dogs with tumor recurrence of which did not. For this, 15 dogs were selected with AK and SCC lesions and with lesions distant skin and 15 dogs with normal skin. The intensity of expression of GLUT 1 and VEGF was investigated by use of immunohistochemistry and the results were evaluated statistically. The AK and Lesions distant Groups showed similar behavior as the intensity staining of VEGF; while the intensity of GLUT 1 was similar in AK and SCC Groups. Samples from the AK Group who did not receive NSAIDs, VEGF showed higher intensity staining than the AK group receiving NSAID; already in dogs with tumor recurrence ...