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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

Delaying/Reducing the Risk of Clinical Tumour Progression after Primary Curative Procedures

Wirth, Manfred 21 February 2014 (has links) (PDF)
The advent of prostate-specific antigen (PSA) testing and increased patient awareness has led to patients being diagnosed with prostate cancer at an earlier stage and a younger age than previously. Adjuvant hormonal therapy to radiotherapy or prostatectomy has been shown to reduce the risk of tumour progression, and in some studies survival benefits have been demonstrated. The non-steroidal antiandrogen bicalutamide (‘Casodex’) has undergone extensive evaluation and is currently undergoing clinical trials as immediate therapy, either alone or as adjuvant to treatment of curative intent in patients with localized or locally advanced disease. Data from the first analysis of one of the studies in the Early Prostate Cancer (EPC) programme involving 3,603 patients have shown that, after a median follow-up of 2.6 years, the risk of prostate cancer progression was significantly reduced (by 43%) in patients receiving bicalutamide 150 mg compared with those receiving standard care alone (HR 0.57; 95% CI 0.48, 0.69; p ≪ 0.0001). The risk of PSA progression was also significantly reduced (by 63%). At this stage the survival data are still immature. Side effects of bicalutamide were mostly gynaecomastia and breast pain, which is consistent with its pharmacology. Overall withdrawal rates were similar in the bicalutamide 150 mg and standard care alone groups. In the bicalutamide 150 mg group, withdrawals were mainly due to side effects, whereas in the group receiving standard care alone, withdrawals were mainly due to disease progression. The programme is ongoing, and survival data are awaited. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
2

Delaying/Reducing the Risk of Clinical Tumour Progression after Primary Curative Procedures

Wirth, Manfred January 2001 (has links)
The advent of prostate-specific antigen (PSA) testing and increased patient awareness has led to patients being diagnosed with prostate cancer at an earlier stage and a younger age than previously. Adjuvant hormonal therapy to radiotherapy or prostatectomy has been shown to reduce the risk of tumour progression, and in some studies survival benefits have been demonstrated. The non-steroidal antiandrogen bicalutamide (‘Casodex’) has undergone extensive evaluation and is currently undergoing clinical trials as immediate therapy, either alone or as adjuvant to treatment of curative intent in patients with localized or locally advanced disease. Data from the first analysis of one of the studies in the Early Prostate Cancer (EPC) programme involving 3,603 patients have shown that, after a median follow-up of 2.6 years, the risk of prostate cancer progression was significantly reduced (by 43%) in patients receiving bicalutamide 150 mg compared with those receiving standard care alone (HR 0.57; 95% CI 0.48, 0.69; p ≪ 0.0001). The risk of PSA progression was also significantly reduced (by 63%). At this stage the survival data are still immature. Side effects of bicalutamide were mostly gynaecomastia and breast pain, which is consistent with its pharmacology. Overall withdrawal rates were similar in the bicalutamide 150 mg and standard care alone groups. In the bicalutamide 150 mg group, withdrawals were mainly due to side effects, whereas in the group receiving standard care alone, withdrawals were mainly due to disease progression. The programme is ongoing, and survival data are awaited. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
3

Chemistry, photophysics, and biomedical applications of gold nanotechnologies

Dreaden, Erik Christopher 04 June 2012 (has links)
Gold nanoparticles exhibit a combination of physical, chemical, optical, and electronic properties unique from all other nanotechnologies. These structures can provide a highly multifunctional platform with which to diagnose and treat diseases and can dramatically enhance a variety of photonic and electronic processes and devices. The work herein highlights some newly emerging applications of these phenomena as they relate to the targeted diagnosis and treatment of cancer, improved charge carrier generation in photovoltaic device materials, and strategies for enhanced spectrochemical analysis and detection. Chapter 1 introduces the reader to the design, synthesis, and molecular functionalization of gold nanotechnologies, and provides a framework from which to discuss the unique photophysical properties and applications of these nanoscale materials and their physiological interactions in Chapter 2. Chapter 3 discusses ongoing preclinical research in our lab investigating the use of near-infrared absorbing gold nanorods as photothermal contrast agents for laser ablation therapy of solid tumors. In Chapter 4, we present recent work developing a novel strategy for the targeted treatment of hormone-dependent breast and prostate tumors using multivalent gold nanoparticles that function as highly selective and potent endocrine receptor antagonist chemotherapeutics. In Chapter 5, we discuss a newly-emerging tumor-targeting strategy for nanoscale drug carriers which relies on their selective delivery to immune cells that exhibit high accumulation and infiltration into breast and brain tumors. Using this platform, we further investigate the interactions of nanoscale drug carriers and imaging agents to a transmembrane protein considered to be the single most prevalent and single most important contributor to drug resistance and the failure of chemotherapy. Chapter 6 presents work from a series of studies exploring enhanced charge carrier generation and relaxation in a hybrid electronic system exhibiting resonant interactions between photovoltaic device materials and plasmonic gold nanoparticles. Chapter 7 concludes by presenting studies investigating the contributions from so-called “dark” plasmon modes to the spectrochemical diagnostic method known as surface enhanced Raman scattering.

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