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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

The role of TGF-ß and Wnt5a in mammary gland development and tumorigenesis

Roarty, Kevin Patrick. January 2008 (has links) (PDF)
Thesis (Ph. D.)--University of Alabama at Birmingham, 2008. / Title from first page of PDF file (viewed Feb. 13, 2009). Includes bibliographical references.
2

International genetic evaluations for udder health traits in dairy cattle /

Mark, Thomas, January 2005 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2005. / Härtill 5 uppsatser.
3

Mastitis in sows : clinical, bacteriological and cytological examinations in assessing udder health during early lactation and at weaning /

Persson, Arne, January 1900 (has links)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 5 uppsater.
4

Mechanism of progesterone receptor repression of transcription of the [beta]-casein gene in mammary epithelial cells /

Buser, Adam C. January 2007 (has links)
Thesis (Ph.D. in Cancer Biology) -- University of Colorado Denver, 2007. / Typescript. Includes bibliographical references (leaves 182-210). Free to UCD affiliates. Online version available via ProQuest Digital Dissertations;
5

Estrogen receptor signalling in mammary epithelial cells /

Hedengran Faulds, Malin, January 2004 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2004. / Härtill 4 uppsatser.
6

Immunodetecção de marcadores de prognóstico em neoplasias mamárias de gatas: correlação dos padrões classificados /

Schweigert, Augusto. January 2012 (has links)
Orientador: Gisele Fabrino Machado / Banca:Daniela Bernadete Rozza / Banca: Rosemeri de Oliveira Vasconcelos / Resumo: As neoplasias mamárias em gatas representam o terceiro tipo neoplásico mais frequente nesta espécie. A maioria destas neoplasias são malignas, e exibem alto potencial metastático. Devido a isto, e a escassez de trabalhos referentes ao prognóstico de gatas com câncer de mama, foram avaliados em 32 amostras de neoplasia mamária de gatas, a expressão imuno- histoquímica de alguns marcadores de prognóstico. As amostras foram segregadas em grupos seguindo os parâmetros de classificação da organização mundial de saúde em carcinomas tubulopapilares, cribriformes e sólidos e de acordo com o método de Nottighan modificado em graus I, II e III. Os cortes histológicos foram submetidos a processamento imuno-histoquímico para avaliação da expressão da metaloproteinase 9 (MMP-9), do fator de crescimento endotelial vascular (VEGF), da proteína de proliferação celular Ki- 67 e de linfócitos TCD3+, CD79+ e macrófagos, afim de se avaliar os diferentes padrões de classificação. Os resultados da marcação imuno- histoquímica foram avaliados com auxílio de um sistema de análise de imagem computadorizada para determinar a porcentagem da área imunomarcada. Em relação à classificação morfológica observou-se diferença significativa entre a densidade de linfócitos TCD3+ entre os grupos. Durante a análise nas amostras segregadas de acordo com a gradação histológica verificou-se diferença significativa entre a imunomarcação da MMP-9, entre a intensidade de infiltração de células TCD3+ e uma tendência de variação na proteína Ki-67. Observamos também correlação positiva entre os níveis de expressão da MMP-9 e da Ki-67, da MMP-9 e células TCD3, e da proteína Ki-67 com as células TCD3. Desta forma concluímos que classificação histológica dos carcinomas de mama em gatas não é um bom parâmetro para determinação do prognóstico da doença... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The mammary tumors in cats represent the third most common tumor type in the species. Most of these are malignant neoplasms exhibit a high metastatic potential. Because of this and the lack of studies regarding the prognosis for cats with breast cancer were evaluated 32 samples of breast cancer in cats. These samples were grouped according to morphological and histological classification, and the sections were submitted to immunohistochemical processing to evaluate the expression of metalloproteinase 9 (MMP-9), the vascular endothelial growth factor (VEGF) protein of cell proliferation Ki-67 and CD3 + T lymphocytes, and CD79 + macrophages in order to evaluate differences in the different grading standards. The results of immunohistochemical marking were evaluated by using a system of computerized image analysis to assess the percentage of area immunomarked. Regarding the morphological classification showed a significant difference between the amount of T lymphocytes CD3 + between the groups. During analysis the samples segregated according to histologic grading there was significant difference between the immunostaining of MMP-9, between the intensity of infiltration of T cells CD3 + and a tendency of variation in the Ki-67 protein. We also observed a positive correlation between the expression levels of MMP-9 and Ki-67, MMP-9 and TCD3 cells, and Ki-67 protein in cells T CD3+. Thus we conclude that histologic classification of breast carcinomas in cats is not a good parameter for determining the prognosis of the disease when evaluated together with the levels of immunohistochemical expression of MMP- 9, VEGF and Ki67. The best best parameters for determining the prognosis was observed when the histological grade was considered . The higher was the proliferative index determined by the positivity of Ki-67 protein from neoplastic cells, the greater... (Complete abstract click electronic access below) / Mestre
7

Avaliação da população de células tronco tumorais nas neoplasias da glândula mamária em cadelas /

Gouveia, Gabriela Mayumi. January 2012 (has links)
Orientador: Maria cecilia Rui Luvizotto / Banca: Gisele Fabrino Machado / Banca: Sandra Helena Penha de Oliveira / Resumo: Os tumores mamários são as mais freqüentes neoplasias em cadelas, representando cerca de 50% dos tumores diagnosticadas nesta espécie e tem maior incidência em fêmeas de meia idade a idosas. Têm sido utilizadas como modelo de estudo para neoplasias mamárias de mulher devido às várias características comuns como as similaridades histológicas e imuno- histoquímicas. Na última década, estudos baseados nos perfis moleculares das neoplasias mamárias, tornaram possível a identificação de algumas células neoplásicas com características de células tronco - as células tronco tumorais (CTT). Uma das moléculas putativas para marcação das CTTs é o CD44. A telomerase, que vem sendo relatada como marcador tumoral, é potencialmente expressa também em CTTs. Estudos recentes estabeleceram um elo crucial entre a transição epitelial-mesenquimal (EMT) e a aquisição de propriedades moleculares e funcionais de células-tronco. Por este motivo analisamos a expressão das proteínas CD44, Citoqueratinas AE1/AE3 e Vimentina, e da enzima telomerase, em tumores mamários de cadelas a fim de investigar o potencial de marcação de CTTs e sua relação com a EMT. Para tal foram utilizados métodos de imuno-histoquímica em tecidos parafinizados tanto in vivo quanto in vitro, fazendo-se uso de técnicas como Tissue MicroArrays (TMA), citoinclusão de tecidos tumorais e cultivos celulares. A expressão da telomerase nas células de tumores mamários cultivadas foi analizada por PCR em tempo real. Nas amostras de tecido parafinizado in vivo, a imunomarcação da citoqueratina demonstrou diferença significativa entre tumores benignos e malignos (p˂0,05), mostrando-se mais intensa em tumores malignos. Já a vimentina apresentou maior intensidade de marcação em tumores benignos, porém não apresentando diferença significativa (p˂0,05)... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract:Mammary tumors are the most frequent cancers in dogs, representing about 50% of tumors, and have a higher incidence in females of middle aged and elderly. These tumors have been used as a model for breast cancer in women due to several common characteristics such as histological and immunohistochemical similarities. In the last decade, studies based on molecular profiles of breast cancer, made possible the identification of some neoplastic cells with characteristics of stem cells - cancer stem cells (CSC). One of the putative molecules of CSCs is CD44. Telomerase, which has been reported as a tumor marker, is potentially also expressed in CSCs. Recent studies have established a crucial link between the epithelial- mesenchymal transition (EMT) and the acquisition of molecular and functional properties of stem cells. For that reason we analyzed the expression of proteins CD44, Cytokeratins AE1/AE3 and Vimentin, and the telomerase enzyme, in dogs mammary tumors, to investigate the potencial for CSC markers, and its relation with the EMT using immunohistochemistry in paraffin embedded tissues in both in vivo and in vitro, making use of techniques such as Tissue MicroArrays (TMA), cell blocks from tumors and cell cultures. Besides that, we analyzed the telomerase expression in mammary tumor cultivated cells by quantitative real time PCR. Immunostaining of cytokeratin had no significant difference between benign and malignant tumors (p ˂ 0,05), being more intense in malignant tumors. However vimentina showed higher staining intensity in benign tumors, but with no significant difference (p ˂ 0,05). The expression of CD44 was higher in malignant tumors that have greater proliferative and metastatic potencial, however its relation with EMT was not detected in the analyzed tumors. Telomerase expression was positive in the neoplastic cultivated cells, however without significant difference... (Complete abstract click electronic access below) / Mestre
8

STAT5A expression and regulation in mammary epithelial cells /

Olsen, Hanne, January 2004 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2004. / Härtill 4 uppsatser.
9

Analysis of potential substrates for the pro-survival kinase AKT /

Lyons, Traci Renae. January 2006 (has links)
Thesis (Ph.D. in Molecular Biology) -- University of Colorado at Denver and Health Sciences Center, 2006. / Typescript. Includes bibliographical references (leaves 194-209). Free to UCD Anschutz Medical Campus. Online version available via ProQuest Digital Dissertations;
10

PAT protein regulation of cytoplasmic lipid droplet formation and secretion : role of adipophilin in mammary epithelial cells /

Russell, Tanya D. January 2008 (has links)
Thesis (Ph.D. in Molecular Biology) -- University of Colorado Denver, 2008. / Typescript. Includes bibliographical references (leaves 134-149). Free to UCD affiliates. Online version available via ProQuest Digital Dissertations;

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