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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

Studies directed towards the total synthesis of the natural product Taxol

Allison, Jeffrey Corbin. January 2003 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2003. / Vita. Includes bibliographical references. Available also from UMI Company.
2

Studies on water-soluble taxol derivatives /

Zhao, Zhiyang, January 1991 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 64-66). Also available via the Internet.
3

Studies on the biosynthesis of taxol /

Colony, James Lynn. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaf 122).
4

Degradation kinetics of taxol using mass spectroscopy /

Zhang, Jun. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 77-83). Also available on the World Wide Web.
5

Isolation, structure elucidation and approaches to the partial synthesis of new taxol analogs /

Chen, Ru, January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 59-68). Also available via the Internet.
6

Towards a new pathway for synthesis of taxol and its analogs

Joud, Carol. Holton, Robert Anthony, January 2005 (has links)
Thesis (M.S.)--Florida State University, 2005. / Advisor: Robert A. Holton, Florida State University, College of Arts and Sciences, Dept. of Chemistry. Title and description from dissertation home page (viewed Jan. 26, 2006). Document formatted into pages; contains xii, 196 pages. Includes bibliographical references.
7

Efeito do paclitaxel na via IRS/PI3K/Akt/mTOR em linhagem de adenocarcinoma de mama e carcinoma de pulmão / Paclitaxel effect on the IRS/PI3-kinase/Akt/mTOR pathway in breast cancer adenocarcinoma and lung cancer carcinoma

Rocha, Guilherme Zweig, 1983- 17 August 2018 (has links)
Orientador: José Barreto Campello Carvalheira / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-17T01:03:59Z (GMT). No. of bitstreams: 1 Rocha_GuilhermeZweig_M.pdf: 10293423 bytes, checksum: 9c8ea03bc3ea3b9cf1fe2ac695bb5916 (MD5) Previous issue date: 2010 / Resumo: A elucidação das vias de crescimento celular e a observação de que essas vias estão alteradas no câncer humano incentivou a procura de inibidores específicos. Proteínas adaptadoras, que se ligam a múltiplos elementos de uma cascata de sinalização e coordenam a sinalização celular, bem como quinases intracelulares podem ser candidatos ideais a alvos para o bloqueio da sinalização celular. Nesse sentido, a via de sinalização IRS/PI3K/Akt/mTOR e a AMPK aparecem como alvos para o bloqueio de crescimento e indução de apoptose de células tumorais. Por outro lado, a descoberta dos taxanos, ésteres de alcalóides complexos, compostos por um sistema de anéis e com diversas ramificações laterais que são essenciais para a ação única contra os microtúbulos, é provavelmente a mais importante adição ao arsenal quimioterápico do final do século vinte. Entretanto, os efeitos da associação entre taxanos e moduladores da atividade da AMPK e de bloqueadores da mTOR em linhagens de câncer de mama e de pulmão são apenas parcialmente conhecidos. Assim, o objetivo do projeto foi avaliar o efeito do tratamento concomitante entre taxanos e moduladores da atividade da AMPK em diferentes linhagens de câncer de mama e de pulmão. As células de adenocarcinoma de mama (MCF-7) e de carcinoma de pulmão (A549) foram tratadas com metformina, ativador da AMPK, e com paclitaxel; e animais SCID foram inoculados com células de câncer de pulmão A549 e tratados com metformina ou paclitaxel ou então uma combinação das duas drogas. Os resultados obtidos demonstram que AMPK é ativada por metformina e que mTOR, p70S6K e 4EBP-1 são inibidas pelo tratamento com metformina de maneira dependente do tempo e da dose a que foram submetidos nas células MCF-7 e A549. Além disso, observamos que o tratamento com paclitaxel ativou não apenas a AMPK, mas também p53 e sestrina 2, e inibiu as proteínas mTOR, p70S6K e 4EBP-1 de maneira dependente do tempo e da dose nas duas linhagens de células utilizadas. Assim, na associação de 2-DG com paclitaxel e de metformina com paclitaxel, verificamos que as proteína ativadas pela associação de drogas eram p53, sestrina 2 e AMPK, enquanto mTOR, p70S6K e 4EBP-1 encontravam-se inibidas nas células MCF-7 e A549. Também observamos que o tratamento de metformina com paclitaxel resulta em aumento no número de células com parada na fase G2/M do ciclo celular e diminui o crescimento tumoral em animais com diminuição da proliferação e aumento da apoptose, em relação aos tratamentos isolados e ao grupo controle. Assim, podemos sugerir que a associação de um ativador da AMPK, que leva a uma diminuição da atividade de vias de crescimento, proliferação e diferenciação celular pode ser uma alternativa mais eficiente que o tratamento com paclitaxel isolado / Abstract: Metformin is a widely-used antidiabetic drug whose anti-cancer effects, mediated by the activation of AMPK and reduction of mTOR signaling, have become noteworthy. Chemotherapy produces genotoxic stress and induces p53 activity, which can cross-talk with AMPK/mTOR pathway. Herein, we investigate whether the combination of metformin and paclitaxel has an effect in cancer cell lines. Human tumors were xenografted into SCID mice and the cancer cell lines were treated only with paclitaxel or metformin, or a combination of both drugs. Western Blotting, flow cytometry and immunohistochemistry were then used to characterize the effects of the different treatments. The results presented herein, demonstrate that the addition of metformin to paclitaxel leads to quantitative potentialization of molecular signaling through AMPK and a subsequent potent inhibition of the mTOR signaling pathway. Treatment with metformin and paclitaxel resulted in an increase in the number of cells arrested in the G2/M phase of the cell cycle, decreased tumor growth and increased apoptosis in tumor-bearing mice, when compared to individual drug treatments. We have provided evidence for a convergence of metformin and paclitaxel induced signaling at the level of AMPK. This mechanism illustrates how different drugs may cooperate to augment anti-growth signals, and suggests that target activation of AMPK by metformin may be a compelling ally in cancer treatment / Mestrado / Medicina Experimental / Mestre em Ciências
8

POSS-Based Biodegradable Polymers for Stent Applications: Electroprocessing, Characterization and Controlled Drug Release

Guo, Qiongyu January 2010 (has links)
Thesis(Ph.D.)--Case Western Reserve University, 2010 / Title from PDF (viewed on 2009-12-22) Department of Macromolecular Science and Engineering Includes abstract Includes bibliographical references and appendices Available online via the OhioLINK ETD Center
9

Molecular cloning and characterization of three enzymes involved in Taxol/Taxoid biosynthesis Taxoid 2[alpha]-hydroxylase, Taxoid 7[beta]-hydroxylase, and Taxoid 5[alpha]-O-Acetyl transferase /

Chau, Mydoanh, January 2004 (has links) (PDF)
Thesis (Ph. D. in Molecular Plant Sciences)--Washington State University. / Includes bibliographical references.
10

Studies directed towards the total synthesis of the natural product Taxol

Allison, Jeffrey Corbin 23 June 2011 (has links)
Not available / text

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