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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.
31

The combination of karyotype analysis, HbF and p53 immunostaining is useful for the differential diagnosis between refractory anemia and aplastic anemia.

岩崎, 卓識, Iwasaki, Takashi 30 September 2008 (has links)
名古屋大学博士学位論文 学位の種類:博士(医療技術学) (課程) 学位授与年月日:平成20年9月30日
32

Scintillation proximity assay (SPA) measuring p53 DNA binding and total p53 level in human thyroid cancer cell line ARO

Xie, Tian. January 2007 (has links)
Thesis (M.S.)--State University of New York at Binghamton, Department of Biological Sciences, 2007. / Includes bibliographical references.
33

Role of integrin signaling in cell proliferation and survival /

Bao, Wenjie, January 2005 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2005. / Härtill 4 uppsatser.
34

Regulation of p53 and susceptibility to cell death in chemically-induced preneoplastic hepatocytes /

Silins, Ilona, January 2003 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2003. / Härtill 4 uppsatser.
35

Characterization of the functional interaction between two tumor suppressors p53 and B56Gamma-PP2A /

Shouse, Geoffrey P. January 2009 (has links)
Thesis (Ph. D.)--University of California, Riverside, 2009. / Includes abstract. Includes bibliographical references. Issued in print and online. Available via ProQuest Digital Dissertations.
36

New approaches to stapled peptides targeting the p53-MDM2 interaction

Saunders, Alexander William January 2016 (has links)
Recent approaches to constraining peptide sequences into more structurally-defined α- helical secondary structures, so-called peptide stapling, are discussed. Stapled peptides are a class of therapeutics that have been shown to more effectively target protein-protein interactions, which are harder to target using a classical small-molecule therapeutic approach. Stapling a peptide constrains it into a well-defined secondary structure. This more accurately mimics the protein-protein interaction making the peptide a more viable therapeutic. Starting from the p53-MDM2 interaction, a protein-protein interaction with important implications in cell health, a known peptidyl inhibitor of this interaction was stapled and analysed for increased α-helicity. This was achieved by using monomers that utilise the copper (I) alkyne azide cycloaddition as a cross-linking methodology, which has been less well researched in the context of peptide stapling. The viability of a novel stapled peptomer inhibitor approach, accomplished using a new, optimised monomer synthesis, is investigated. Additionally, the synthesis of a ligand series designed for use in the copper(I) alkyne azide cycloaddition is also discussed.
37

Comportamento das células epiteliais de lesões císticas odontogênicas : um estudo imunoistoquímico

Oliveira, Márcia Gaiger de January 2006 (has links)
O propósito do presente estudo foi analisar as células epiteliais odontogênicas procurando um entendimento maior sobre a natureza e conseqüentemente o comportamento de algumas lesões odontogênicas. A expressão imunoistoquímica de p53 e PCNA foi analisada em cisto radicular, cisto dentígero, ceratocisto odontogênico e cisto odontogênico calcificante (Cisto de Gorlin) onde verificou-se que no cisto radicular e cisto dentígero a expressão dos marcadores está relacionado com proliferação e stress celular causado pelo estímulo inflamatório e em ceratocisto odontogênico e Cisto de Gorlin a expressão dos marcadores corresponde a proliferação celular não descartando também a presença de mutação no gene TP53. Também foi observada a expressão de Ki-67, EGFR e Survivin em folículo pericoronário, ceratocisto odontogênico e cisto dentígero que mostrou que as células epiteliais dos folículos pericoronários têm potencial proliferativo para formar lesões odontogênicas e que a proliferação das células do cisto dentígero é relacionada com o estímulo inflamatório. Todos os marcadores estudados comprovaram a natureza neoplásica do ceratocisto odontogênico. / The purpose of this study was to analyze odontogenic epithelial cells to contribute to the knowledge about their nature and, consequently, about the behavior of certain odontogenic lesions. Immunohistochemical expressions of p53 and PCNA were analyzed in radicular cysts, dentigerous cysts, odontogenic keratocysts and calcifying odontogenic cysts (Gorlin cyst). In radicular and dentigerous cysts, the expression of these markers was associated with cell proliferation and stress caused by an inflammatory stimulus. In keratocysts and Gorlin cysts, the expression of markers corresponded to cell proliferation. Results also showed possible mutation in TP53 gene. Also, Ki-67, EGFR and Survivin were expressed in pericoronal follicles, odontogenic keratocysts and dentigerous cysts, which demonstrated that epithelial cells of pericoronal follicles may proliferate to form odontogenic lesions and that cell proliferation in dentigerous cysts was associated with an inflammatory stimulus. The analysis of all markers under study confirmed the neoplastic nature of odontogenic keratocysts.
38

Comportamento das células epiteliais de lesões císticas odontogênicas : um estudo imunoistoquímico

Oliveira, Márcia Gaiger de January 2006 (has links)
O propósito do presente estudo foi analisar as células epiteliais odontogênicas procurando um entendimento maior sobre a natureza e conseqüentemente o comportamento de algumas lesões odontogênicas. A expressão imunoistoquímica de p53 e PCNA foi analisada em cisto radicular, cisto dentígero, ceratocisto odontogênico e cisto odontogênico calcificante (Cisto de Gorlin) onde verificou-se que no cisto radicular e cisto dentígero a expressão dos marcadores está relacionado com proliferação e stress celular causado pelo estímulo inflamatório e em ceratocisto odontogênico e Cisto de Gorlin a expressão dos marcadores corresponde a proliferação celular não descartando também a presença de mutação no gene TP53. Também foi observada a expressão de Ki-67, EGFR e Survivin em folículo pericoronário, ceratocisto odontogênico e cisto dentígero que mostrou que as células epiteliais dos folículos pericoronários têm potencial proliferativo para formar lesões odontogênicas e que a proliferação das células do cisto dentígero é relacionada com o estímulo inflamatório. Todos os marcadores estudados comprovaram a natureza neoplásica do ceratocisto odontogênico. / The purpose of this study was to analyze odontogenic epithelial cells to contribute to the knowledge about their nature and, consequently, about the behavior of certain odontogenic lesions. Immunohistochemical expressions of p53 and PCNA were analyzed in radicular cysts, dentigerous cysts, odontogenic keratocysts and calcifying odontogenic cysts (Gorlin cyst). In radicular and dentigerous cysts, the expression of these markers was associated with cell proliferation and stress caused by an inflammatory stimulus. In keratocysts and Gorlin cysts, the expression of markers corresponded to cell proliferation. Results also showed possible mutation in TP53 gene. Also, Ki-67, EGFR and Survivin were expressed in pericoronal follicles, odontogenic keratocysts and dentigerous cysts, which demonstrated that epithelial cells of pericoronal follicles may proliferate to form odontogenic lesions and that cell proliferation in dentigerous cysts was associated with an inflammatory stimulus. The analysis of all markers under study confirmed the neoplastic nature of odontogenic keratocysts.
39

Imunomarcação de proteínas de estresse (HSP 27, HSP 72, HSP 90) e proteína P53 em neoplasias mamárias de cadelas

Paula, Ana Carolina Barbosa de [UNESP] 28 January 2010 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:27:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-28Bitstream added on 2014-06-13T19:57:04Z : No. of bitstreams: 1 paula_acb_me_jabo.pdf: 945268 bytes, checksum: 8488b75c904e7af7b9e65ce5c9db72e1 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Os tumores de mama são a principal causa de morte em cães e isso vem despertando maior interesse no desenvolvimento de estudos relacionados a este distúrbio. A proximidade com os seres humanos, tanto na convivência quanto aos hábitos, podem influenciar o aparecimento das neoplasias. A semelhança dos tumores mamários caninos com os tumores de mama da mulher leva a um interesse no estudo da patologia comparada, estimulando o uso de modelos animais. Apesar dos muitos estudos, pouco se conhece sobre o prognóstico e as causas dos tumores mamários caninos, observando-se um esforço crescente na tentativa de acrescentar aos fatores prognósticos clássicos novos parâmetros, de natureza molecular, que auxiliem a decisão clínica, à semelhança do verificado em Medicina Humana, estando entre eles os marcadores moleculares, como a proteína P53 e as proteínas de estresse. A expressão de proteína P53 e das proteínas de estresse tem sido observada em muitas neoplasias, incluindo o câncer de mama. Nesse sentido, o objetivo do presente estudo foi investigar a imunomarcação de HSP 27, HSP 72, HSP 90 e proteína P53 em tecido mamário normal e neoplásico de cadelas e estabelecer uma relação entre a expressão destas proteínas e o grau histológico das neoplasias. Foi realizada análise estatística e o nível de significância (α) adotado foi de 5%. Dentre os tumores malignos, os carcinomas simples foram o tipo histológico predominante. Para a proteína P53, não houve diferença significativa em sua expressão entre os grupos de tumores malignos avaliados, ocorrendo o mesmo para as HSPs 27, 72 e 90. A sensibilidade do teste de imuno-histoquímica para a proteína P53, nesta amostra, foi de 67,5%, a especificidade foi de 100%, o valor preditivo positivo foi de 100%, o valor preditivo negativo foi de 25% e acurácia do teste foi de 92%. Ainda para a proteína P53, comparando-se o grupo... / Breast tumors are the leading cause of death in dogs and this has aroused great interest in developing studies related to this disease. The proximity with humans, much as in living habits, may influence the onset of tumors. The similarity of canine mammary tumors with breast tumors of women take an interest in the study of comparative pathology, stimulating the use of animal models. Despite many studies, little is known about the prognosis and causes of canine mammary tumors, observing a growing effort in trying to add to the classic prognostic factors new parameters of molecular nature, that help the clinical decision, like that seen in Human Medicine, and among them the molecular markers such as P53 and stress proteins. The expression of P53 protein and the stress proteins has been observed in many cancers, including breast cancer. Accordingly, the purpose of this study was to investigate the immunostaining of HSP 27, HSP 72, HSP 90 and P53 protein in normal and neoplastic breast tissue of female dogs and establish a relationship between the expression of these proteins and the histological grade of tumors. Statistical analysis was performed and significance level (α) was 5%. Among the malignant tumors, simple carcinomas were the predominant histologic type. Protein P53, presented no significant difference in expression between the evaluated groups of malignant tumors, the same occurring for HSPs 27, 72 and 90. The test sensitivity of immunohistochemistry for protein P53 in this sample was 67,5%, specificity was 100%, positive predictive value was 100%, negative predictive value was 25% and accuracy of test was 92%. Although protein P53, compared to the control group with other groups in relation to staining intensity and proportion score, there was a significant difference only between the group of simple carcinomas. With regard to staining intensity, we tested the correlation between... (Complete abstract click electronic access below)
40

Comportamento das células epiteliais de lesões císticas odontogênicas : um estudo imunoistoquímico

Oliveira, Márcia Gaiger de January 2006 (has links)
O propósito do presente estudo foi analisar as células epiteliais odontogênicas procurando um entendimento maior sobre a natureza e conseqüentemente o comportamento de algumas lesões odontogênicas. A expressão imunoistoquímica de p53 e PCNA foi analisada em cisto radicular, cisto dentígero, ceratocisto odontogênico e cisto odontogênico calcificante (Cisto de Gorlin) onde verificou-se que no cisto radicular e cisto dentígero a expressão dos marcadores está relacionado com proliferação e stress celular causado pelo estímulo inflamatório e em ceratocisto odontogênico e Cisto de Gorlin a expressão dos marcadores corresponde a proliferação celular não descartando também a presença de mutação no gene TP53. Também foi observada a expressão de Ki-67, EGFR e Survivin em folículo pericoronário, ceratocisto odontogênico e cisto dentígero que mostrou que as células epiteliais dos folículos pericoronários têm potencial proliferativo para formar lesões odontogênicas e que a proliferação das células do cisto dentígero é relacionada com o estímulo inflamatório. Todos os marcadores estudados comprovaram a natureza neoplásica do ceratocisto odontogênico. / The purpose of this study was to analyze odontogenic epithelial cells to contribute to the knowledge about their nature and, consequently, about the behavior of certain odontogenic lesions. Immunohistochemical expressions of p53 and PCNA were analyzed in radicular cysts, dentigerous cysts, odontogenic keratocysts and calcifying odontogenic cysts (Gorlin cyst). In radicular and dentigerous cysts, the expression of these markers was associated with cell proliferation and stress caused by an inflammatory stimulus. In keratocysts and Gorlin cysts, the expression of markers corresponded to cell proliferation. Results also showed possible mutation in TP53 gene. Also, Ki-67, EGFR and Survivin were expressed in pericoronal follicles, odontogenic keratocysts and dentigerous cysts, which demonstrated that epithelial cells of pericoronal follicles may proliferate to form odontogenic lesions and that cell proliferation in dentigerous cysts was associated with an inflammatory stimulus. The analysis of all markers under study confirmed the neoplastic nature of odontogenic keratocysts.

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