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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Imunoterapia com a vacina heteróloga de DNA-HSP65+proteína-HSP65 de Mycobacterium leprae em tumores mamários de cadelas

João, Carolina Franchi [UNESP] 07 March 2012 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:31:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-03-07Bitstream added on 2014-06-13T19:01:33Z : No. of bitstreams: 1 joao_cf_dr_jabo.pdf: 1122575 bytes, checksum: 9ae3af7c9b6ed043db7419a9794af8db (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / A mastectomia é o procedimento terapêutico mais frequentemente empregado para tratar tumores mamários de cadelas e o sucesso depende do estádio do tumor no momento da intervenção. Estudos em modelos animais mostram que as proteínas de choque térmico (HSP) têm a capacidade de induzir imunidade inata tumor-específica e resulta na regressão do tumor. Sendo assim, este estudo teve como objetivos avaliar a eficácia do imunomodulador DNA-HSP65+proteína-HSP65 no tratamento de cadelas com tumores mamários malignos, seu potencial imunoestimulatório e investigar o aparecimento de efeitos adversos. Fizeram parte do experimento 21 cadelas com tumores mamários malignos. Destas 13 foram tratadas com o imunoterápico e oito submetidas a mastectomia da cadeia mamaria afetada. As cadelas (n= 13) receberam até três aplicações do imunomodulador, via intratumoral, no tumor de maior volume, com intervalo médio de 15 dias. O potencial imunoestimulatório do imunomodulador foi investigado através da citometria de fluxo pela comparação do numero de células natural killer ativadas, células B e T, CD4 e CD8, monócitos, monócitos ativados, macrófagos e células dendríticas; da proliferação espontânea de células mononucleares e da produção de anticorpos anti-HSP65 pelo teste ELISA antes do tratamento e 15 dias após o termino do mesmo. Seis cadelas (46,1%) apresentaram regressão em pelo menos um dos tumores da cadeia mamária, e uma (7,7%) no tumor que recebeu a aplicação do imunoterápico. Quando se consideram todas as mamas acometidas por tumores (n= 40), nove (22,5%) apresentaram regressão tumoral, 19 (47,5%) progressão e 12 (30%) se mantiveram estáveis. Três cadelas vieram a óbito durante o experimento; uma mastectomizada e duas tratadas com o imunoterápico. O imunoterapico não... / Mastectomy is a therapeutic procedure most often used to treat breast tumors in bitches and success depends on the tumor stage at the time of intervention. Studies in animal models show that the heat shock proteins (HSP) have the ability to induce tumorspecific innate immunity and results in tumor regression. Thus, this study aimed to evaluate the efficacy of immunomodulatory DNA-HSP65 + HSP65 protein in the treatment of dogs with malignant mammary tumors, and investigate its potential immunostimulatory the appearance of adverse effects. The experiment consisted of 21 dogs with malignant mammary tumors Of these 13 were treated with immunotherapy undergo mastectomy and eight of the affected mammary chain. Female dogs (n = 13) received three applications of the immunomodulator, intratumoral, in the greater volume tumor, with a mean interval of 15 days between applications. The potential immunostimulatory was investigated by flow cytometry by comparing the number of activated natural killer cells, T and B cells, CD4 and CD8 lymphocytes, monocytes, activated monocytes, macrophages and dendritic cells, the proliferation of mononuclear cells and spontaneous production anti-HSP65 antibody by ELISA before treatment and 15 days after the end. Six dogs (46.1%) had regression at least in one tumor of the mammary chain, and one dog (7.7%) in the tumor that received intratumoral application. When you consider all breast tumors (n = 40), nine (22.5%) had tumor regression, 19 (47.5%) progression and 12 (30%) remained stable. Three dogs died during the experiment, one after mastectomy and two after immunotherapy. The immunotherapy did not cause significant systemic immune stimulation. There was an increase of anti- HSP65 after treatment and the proliferation of leukocytes, although... (Complete abstract click electronic access below)

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