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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.
121

Modelo de hipertensão arterial decorrente do bloqueio de NF-kB durante a nefrogênese: efeito da sobrecarga salina / Salt overload aggravates hypertension and promotes severe renal injury in rats subjected to NF-?B inhibition during nephrogenesis

Avila, Victor Ferreira de 21 June 2018 (has links)
Recentemente descrevemos que ratos tratados com o inibidor do sistema NF-?B pirrolidina ditiocarbamato (PDTC) durante a lactação desenvolvem uma hipertensão arterial na fase adulta, sem lesão renal aparente, caracterizando assim um novo modelo hipertensão essencial. No presente estudo, nós investigamos se a Uninefrectomia (UNx) associada a uma sobrecarga salina (SS) na dieta revelaria uma possível disfunção renal, agravando assim a hipetensão arterial e levando a lesões renais. Ratos Munich-Wistar recém-nascidos foram divididos em 2 grupos: Controle, sem qualquer tratamento; e PDTCLact, recebendo PDTC (280 mg/Kg/dia) na água do bebedouro do 0 aos 20 dias após o nascimento. Após 10 semanas de vida, 120 ratos machos submetidos à Uninefrectomia e foram estudados em dois protocolos. No protocolo 1, os ratos machos foram subdivididos em: UNx+NS, ratos Controle recebendo dieta padrão (NS); PDTCLact+UNx+NS, ratos PDTCLact recebendo NS; UNx+SS, ratos Controle recebendo SS; PDTCLact+UNx+SS, ratos PDTCLact recebendo SS. Após 12 semanas, os animais do Grupo UNx+SS apresentaram hipertensão, aumento da albuminúria e lesões renais moderadas. Nos animais do grupo PDTCLact+UNx+SS a hipertensão, esclerose glomerular e a deposição de Colágeno-1 intersticial apresentaram um aumentado exacerbado, juntamente com lesões arteriolares do tipo \"casca de cebola\", estresse oxidativo, ativação do NF-kB, intenso infiltrado de macrófagos, linfócitos e aumento de células positivas para Angiotensina II, mesmo com a renina plasmática reduzida. Para investigar o papel do sistema renina-angiotensina neste modelo, no protocolo 2, 40 ratos foram divididos em: PDTCLact+UNx+SS, como descrito no protocolo 1; PDTCLact+UNx+SS+L, ratos tratados com Losartan (50 mg/kg) na água do bebedouro. O tratamento com Losartan foi capaz de atenuar as lesões glomerulares e a inflamação renal. Esses resultados indicam que a integridade do sistema NF-kB é fundamental para o desenvolvimento adequado do rim e a manutenção da homeostase do sódio na fase adulta. Paradoxalmente, esse mesmo sistema contribui para o desenvolvimento da lesão renal quando a disfunção renal causada por sua inibição durante a nefrogênese é desmascarada por UNx associada ao SS / Recently we described that rats treated with the NF-?B inhibitor pyrrolidine dithiocarbamate (PDTC) during lactation develop high blood pressure hypertensive in adult life, without apparent functional or structural damage to the kidneys, thus providing a new model of essential hypertension. In the present study, we investigated whether uninephrectomy (UNx) associated with saline overload would unveil a possible renal dysfunction, thus aggravating arterial hypertension and leading to hemodynamically mediated renal injury. Munich-Wistar rat pups were divided into 2 groups: Control, receiving no treatment; and PDTCLact, receiving PDTC (280 mg/kg/ day) in the drinking water from 0 to 20 days after birth. At 10 weeks of age, 120 male rats underwent uninephrectomy and were studied in two protocols. In Protocol 1, rats were subdivided into: UNx+NS, control rats receiving normal salt (NS) diet; PDTCLact+UNx+NS, PDTCLact rats receiving NS; UNx+HS, control rats receiving high-salt (HS) diet; PDTCLact+UNx+HS, PDTCLact rats receiving HS. After 12 weeks, the UNx+HS animals were moderately hypertensive and exhibited mild albuminuria and renal injury. By contrast, arterial hypertension, glomerulosclerosis and cortical collagen-1 deposition were exacerbated in the PDTCLact+UNx+HS group, along with \"onion skin\" arteriolar lesions, evidence of oxidative stress, NF-kB activation and intense infiltration by macrophages, lymphocytes and angiotensin II-positive cells, even though circulating renin was depressed. To investigate the role of the renin-angiotensin system in this setting, 40 rats were divided into: PDTCLact+UNx+HS, treated as described before; and PDTCLact+UNx+HS+L, receiving in addition Losartan, 50 mg/kg in drinking water. Losartan treatment strongly atenuated glomerular injury and renal inflammation. The NF-kB system is essential for the kidneys to develop properly and maintain sodium homeostasis in adult life. Paradoxically, this same system contributes to renal injury when renal dysfunction caused by its inhibition during nephrogenesis is unmasked by UNx associated to HS
122

Deregulated NF-κB signalling pathways in EBV-positive nasopharyngeal carcinoma. / Deregulated NF-kappa B signalling pathways in Epstein-Barr virus-positive nasopharyngeal carcinoma / Deregulated NF-kB signalling pathways in EBV-positive nasopharyngeal carcinoma / EB病毒陽性鼻咽癌的NF-кB信號通路失調 / EB bing du yang xing bi yan ai de NF-кB xin hao tong lu shi tiao

January 2011 (has links)
Lou, Pak Kin. / Thesis (M.D.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 136-170). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgements --- p.v / Table of Contents --- p.vi / List of Figures --- p.x / List of Tables --- p.xiii / List of Publications --- p.xv / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1. --- Aims of Study --- p.1 / Chapter 1.2. --- Literature Review --- p.2 / Chapter 1.2.1. --- Nasopharyngeal Carcinoma --- p.2 / Chapter 1.2.1.1. --- Overview --- p.2 / Chapter 1.2.1.2. --- Histopathology --- p.2 / Chapter 1.2.1.3. --- Epidemiology --- p.3 / Chapter 1.2.1.4. --- Etiology --- p.5 / Chapter 1.2.1.4.1. --- Epstein-Barr Virus (EBV) Latent Infection --- p.5 / Chapter 1.2.1.4.2. --- Environmental Factors --- p.5 / Chapter 1.2.1.4.3. --- Genetic Factors --- p.6 / Chapter 1.2.1.5. --- Molecular Pathogenesis --- p.7 / Chapter 1.2.1.5.1. --- Chromosomal Alterations --- p.7 / Chapter 1.2.1.5.2. --- NPC-associated Tumour Suppressor Genes --- p.7 / Chapter 1.2.1.5.3. --- NPC-associated Oncogenes --- p.8 / Chapter 1.2.2. --- Epstein-Barr Virus --- p.9 / Chapter 1.2.2.1. --- Overview --- p.9 / Chapter 1.2.2.2. --- Lytic and Latent Infection of EBV --- p.9 / Chapter 1.2.2.3. --- EBV Latency Programs and Associated --- p.10 / Malignancies --- p.11 / Chapter 1.2.2.4. --- The Role of EBV in NPC --- p.12 / Chapter 1.2.3. --- NF-kB Signalling Pathways --- p.12 / Chapter 1.2.3.1. --- Overview --- p.12 / Chapter 1.2.3.2. --- Pathway Components --- p.12 / Chapter 1.2.3.2.1. --- NF-kB Subunits --- p.16 / Chapter 1.2.3.2.2. --- Inhibitors of kB (IkBs) --- p.16 / Chapter 1.2.3.2.3. --- IkB Kinases (IKKs) --- p.17 / Chapter 1.2.3.3. --- NF-kB Activation and Signalling --- p.17 / Chapter 1.2.3.3.1. --- The Canonical Pathway --- p.18 / Chapter 1.2.3.3.2. --- The Non-canonical Pathway --- p.18 / Chapter 1.2.3.3.3. --- Physiological Functions of NF-kB --- p.19 / Chapter 1.2.3.4. --- NF-kB Signalling and Tumourigenesis --- p.20 / Chapter 1.2.3.4.1. --- Oncogenic Activation of NF-kB in Hematological Malignancies --- p.20 / Chapter 1.2.3.4.2. --- Oncogenic Activation of NF-kB in Solid and Epithelial Tumours --- p.22 / Chapter Chapter 2 --- Material and Methods --- p.22 / Chapter 2.1. --- Tumour Specimens --- p.24 / Chapter 2.2. --- NPC Tumour Lines and Immortalized NP Cell Lines --- p.24 / Chapter 2.2.1. --- Cell Lines --- p.24 / Chapter 2.2.2. --- Xenografts --- p.27 / Chapter 2.3. --- DNA Sequence Analysis --- p.27 / Chapter 2.3.1. --- Genomic DNA Extraction --- p.27 / Chapter 2.3.2. --- Polymerase Chain Reaction (PCR) --- p.28 / Chapter 2.3.3. --- DNA Sequencing --- p.32 / Chapter 2.4. --- RNA Expression Analysis --- p.32 / Chapter 2.4.1. --- Total RNA Extraction and Reverse Transcription --- p.33 / Chapter 2.4.2. --- Quantitative Real-time Polymerase Chain Reaction (QRT-PCR) --- p.35 / Chapter 2.5. --- Protein Expression Analysis --- p.35 / Chapter 2.5.1. --- Total Protein Extraction --- p.35 / Chapter 2.5.2. --- Nuclear and Cytoplasmic Protein Isolation --- p.36 / Chapter 2.5.3. --- Western Blotting --- p.39 / Chapter 2.6. --- Immunohistochemical Staining --- p.41 / Chapter 2.7. --- Statistical Analysis --- p.41 / Chapter 2.8. --- Immunoprecipitation --- p.43 / Chapter 2.9. --- Electrophoretic Mobility Shift Assay (EMSA) and Supershift Assay --- p.44 / Chapter 2.10. --- Enzyme-Linked Immunosorbent Assay (ELISA) --- p.45 / Chapter 2.11. --- Plasmid Preparation --- p.45 / Chapter 2.11.1. --- Plasmids --- p.45 / Chapter 2.11.2. --- Bacterial Transformation and Plasmid DNA Extraction --- p.46 / Chapter 2.12. --- Transfections --- p.46 / Chapter 2.12.1. --- Transient Transfection --- p.46 / Chapter 2.12.2. --- Stable Transfection --- p.47 / Chapter 2.13. --- Immunofluorescence --- p.47 / Chapter 2.14. --- Cell Proliferation and Viability Analysis --- p.47 / Chapter 2.15. --- Small Interfering RNA (siRNA) Knockdown --- p.49 / Chapter 2.16. --- Expression Microarray --- p.49 / Chapter 2.16.1. --- Agilent Oligonucleotide Microarray --- p.50 / Chapter 2.16.2. --- Data Analysis --- p.51 / Chapter Chapter 3 --- Activation of NF-kB Signals in NPC --- p.51 / Chapter 3.1. --- Introduction --- p.52 / Chapter 3.2. --- Results --- p.52 / Chapter 3.2.1. --- Expression Pattern of NF-kB Subunits in NPC Tumour Lines --- p.55 / Chapter 3.2.2. --- Distinct NF-kB Complexes in NPC Tumour Lines --- p.60 / Chapter 3.2.3. --- Expression of NF-kB Subunits in NPC Primary Tumours --- p.67 / Chapter 3.3. --- Discussion / Chapter Chapter 4 --- Alterations of NF-kB Components in NPC --- p.71 / Chapter 4.1. --- Introduction --- p.72 / Chapter 4.2. --- Results --- p.72 / Chapter 4.2.1. --- Homozygous Deletion of IicBa and TRAF3 in NPC Tumour Lines --- p.76 / Chapter 4.2.2. --- Mutation of TRAF2 and A20 in NPC Tumour Lines / Chapter 4.2.3. --- Aberrant Expression of Multiple NF-kB Signalling Components in NPC Tumour Lines --- p.80 / Chapter 4.2.4. --- Expression of NF-kB Signalling Components in NPC --- p.85 / Primary Tumour --- p.92 / Chapter 4.3. --- Discussion --- p.99 / Chapter Chapter 5 --- Identification of Downstream Targets for NPC-associated NF-kB Signalling --- p.99 / Chapter 0.1. --- Introduction --- p.99 / Chapter 0.2. --- Results --- p.100 / Chapter 0.2.1. --- Target Genes Modulated by p50 --- p.100 / Chapter 0.2.2. --- Functional Annotation of p50 Target Genes --- p.105 / Chapter 0.2.3. --- Target Genes Modulated by RelB --- p.105 / Chapter 0.2.4. --- Functional Annotation of RelB Target Genes --- p.105 / Chapter 0.2.5. --- Functional Annotation of Genes Modulated by both p50 and RelB --- p.111 / Chapter 0.3. --- Discussion --- p.118 / Chapter Chapter 6 --- Functional Role of TRAF3 Inactivation in NPC --- p.118 / Chapter 0.1. --- Introduction --- p.118 / Chapter 0.2. --- Results --- p.118 / Chapter 0.2.1. --- Effect of TRAF3 Restoration on NF-kB Activity --- p.119 / Chapter 0.2.2. --- Effect of TRAF3 Expression on Cell Proliferation --- p.123 / Chapter 0.2.3. --- TRAF3 Expression Modulates Interferon Transcription in NPC Cells --- p.128 / Chapter 0.3. --- Discussion / Chapter Chapter 7 --- General Discussion --- p.132 / Chapter Chapter 8 --- Conclusion / Chapter Chapter 9 --- References / Appendix --- p.136
123

NF-кB targeting by dehydroxymethylepoxyquinomicin (DHMEQ) in nasopharyngeal carcinoma (NPC). / NF-kappa B targeting by dehydroxymethylepoxyquinomicin (DHMEQ) in nasopharyngeal carcinoma (NPC) / NF-KB targeting by dehydroxymethylepoxyquinomicin (DHMEQ) in nasopharyngeal carcinoma (NPC) / 抗癌葯物DHMEQ在鼻咽癌中標靶NF-кB腫瘤治療 / Kang ai yao wu DHMEQ zai bi yan ai zhong biao ba NF-кB zhong liu zhi liao

January 2008 (has links)
Wong, Ho Ting. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 66-77). / Abstracts in English and Chinese. / Acknowledgement --- p.i / List of abbreviations --- p.ii / List of tables and figures --- p.iv / Abstract in English --- p.vi / Abstract in Chinese --- p.viii / Table of content --- p.x / Chapter Chapter 1 --- Literature review / Chapter 1.1 --- Nasopharyngeal carcinoma (NPC) and treatments --- p.1 / Chapter 1.2 --- EBV and NF-kB signaling in NPC / Chapter 1.2.1 --- Role of EBV and NF-kB in NPC --- p.2 / Chapter 1.2.2 --- NF-kB signaling in cancer --- p.4 / Chapter 1.2.3 --- NF-kB activation in NPC --- p.7 / Chapter 1.2.3.1 --- NF-kB activation by LMP1 --- p.8 / Chapter 1.2.3.2 --- NF-kB and LMP2A --- p.10 / Chapter 1.2.3.3 --- NF-kB activation by non-viral factors --- p.10 / Chapter 1.2.4 --- NF-kB target genes in NPC --- p.11 / Chapter 1.3 --- NF-kB targeting / Chapter 1.3.1 --- NF-kB targeting agents --- p.14 / Chapter 1.3.2 --- "DHMEQ, a novel blocker of NF-kB Transactivation" --- p.15 / Chapter Chapter 2 --- Aim of study and Research plan --- p.18 / Chapter Chapter 3 --- Materials and Methods / Chapter 3.1 --- Cell lines and Reagents --- p.20 / Chapter 3.2 --- Cell viability assay --- p.21 / Chapter 3.3 --- Cell apoptosis detection / Chapter 3.3.1 --- PARP cleavage --- p.22 / Chapter 3.3.2 --- DNA fragmentation --- p.22 / Chapter 3.4 --- Cell cycle analysis --- p.22 / Chapter 3.5 --- Transwell migration or Matrigel invasion assay --- p.23 / Chapter 3.6 --- Soft agar colony formation assay --- p.24 / Chapter 3.7 --- Drug treatment for western blotting --- p.25 / Chapter 3.8 --- "Protein extraction and quantification, SDS-PAGE and western blotting" / Chapter 3.8.1 --- Protein extraction and quantification --- p.25 / Chapter 3.8.2 --- SDS-PAGE and western blotting --- p.26 / Chapter 3.9 --- Fractionation --- p.28 / Chapter 3.10 --- NF-kB transcriptional activity assay / Chapter 3.10.1 --- Construction of NF-kB reporter system --- p.29 / Chapter 3.10.2 --- Luciferase assay --- p.29 / Chapter 3.11 --- Statistical Analysis --- p.30 / Chapter Chapter 4 --- Results / Chapter 4.1 --- Anti-tumor activity of DHMEQ in NPC / Chapter 4.1.1 --- Growth inhibition in NPC cell lines --- p.31 / Chapter 4.1.2 --- Apoptotic induction in NPC cell lines --- p.35 / Chapter 4.1.3 --- Cell cycle arrest in NPC cell lines --- p.38 / Chapter 4.1.4 --- Inhibition of migration and invasive behavior of NPC cell lines --- p.38 / Chapter 4.1.5 --- Abrogation of soft agar colony formation ability of NPC cell lines --- p.43 / Chapter 4.2 --- Mechanistic study of DHMEQ in NPC / Chapter 4.2.1 --- Blockade of p65 nuclear translocation --- p.48 / Chapter 4.2.2 --- Attenuation of NF-kB transcriptional activity --- p.48 / Chapter 4.2.3 --- Downregulation of NF-kB target genes --- p.53 / Chapter Chapter 5 --- Discussion --- p.54 / Chapter Chapter 6 --- Summary --- p.60 / Chapter Chapter 7 --- Future Study --- p.63 / Reference List --- p.66 / Appendix / Chapter Appendix 1 --- Construction of NF-kb report plasm id --- p.78 / Chapter Appendix 2 --- Wound healing assay --- p.86 / Chapter Appendix 3 --- Reverse-phase protein Array --- p.88
124

Kappa Control with Online Analyzer Using Samples from the Digester's Mid-phase

Gäärd, Peter January 2004 (has links)
<p>In the pulp industry, digesters are used to disolve lignin in wood chips. The concentration of lignin is measured and is called the Kappa number. In this thesis, the question of whether an online Kappa sensor, taking samples from the mid-phase of the digester, is useful or not is analyzed. For the samples to be useful, there has to be a relationship between the measured Kappa at the mid- phase and the measured Kappa in the blowpipe at the bottom of the digester. An ARX model of the lower part of the digester has been estimated. Despite a lot of noise, it seems that it might be possible to use the mid-phase samples and for this model predict the blowpipe flow Kappa signal. It is concluded that the mid-phase samples should be further improved to be more useful. The mid-phase samples have also been used in another ARX model, this time to LP-filter these values without time loss. </p><p>Another important issue has been to examine if the existing controller is good or not. In order to be able to compare it with other controllers, a simulator has been created in MATLAB - Simulink. Test results from this simulator show that the existing controller's use of the mid-phase Kappa samples improves its performance. For a simplified digester model, the existing controller has also been compared with an MPC controller. This test shows that the MPC controller is significantly better. Hence, the conclusion in this thesis is that it might be interesting to study MPC further using a more advanced model.</p>
125

Kappa Control with Online Analyzer Using Samples from the Digester's Mid-phase

Gäärd, Peter January 2004 (has links)
In the pulp industry, digesters are used to disolve lignin in wood chips. The concentration of lignin is measured and is called the Kappa number. In this thesis, the question of whether an online Kappa sensor, taking samples from the mid-phase of the digester, is useful or not is analyzed. For the samples to be useful, there has to be a relationship between the measured Kappa at the mid- phase and the measured Kappa in the blowpipe at the bottom of the digester. An ARX model of the lower part of the digester has been estimated. Despite a lot of noise, it seems that it might be possible to use the mid-phase samples and for this model predict the blowpipe flow Kappa signal. It is concluded that the mid-phase samples should be further improved to be more useful. The mid-phase samples have also been used in another ARX model, this time to LP-filter these values without time loss. Another important issue has been to examine if the existing controller is good or not. In order to be able to compare it with other controllers, a simulator has been created in MATLAB - Simulink. Test results from this simulator show that the existing controller's use of the mid-phase Kappa samples improves its performance. For a simplified digester model, the existing controller has also been compared with an MPC controller. This test shows that the MPC controller is significantly better. Hence, the conclusion in this thesis is that it might be interesting to study MPC further using a more advanced model.
126

Interaction of PKCbeta with CARMA1 mediates B cell receptor-induced NF-kappaB activation /

Guo, Beichu. January 2003 (has links)
Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (leaves 98-113).
127

The role of BCL-3 in adjuvant induced T cell survival /

Bassetti, Michael Frederick John. January 2006 (has links)
Thesis (Ph.D. in Immunology) -- University of Colorado at Denver and Health Sciences Center, 2006. / Typescript. Includes bibliographical references (leaves 131-146). Free to UCD Anschutz Medical Campus. Online version available via ProQuest Digital Dissertations;
128

Role of I kappa B kinase alpha and I kappa B kinase beta in the development and function of B and T lymphocytes

Ren, Hong. January 2001 (has links) (PDF)
Thesis (Ph. D.)--University of Texas Southwestern Medical Center at Dallas, 2001. / Vita. Bibliography: 146-193.
129

Nuclear factor-[kappa] B signal transduction development of a novel regulatory strategy /

Swaroop, Navin V., January 2000 (has links)
Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains ix, 70 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 63-68).
130

Roles of cellular FLICE-inhibitory protein (c-FLIP) and Pl3K/Akt in Fas (CD95)-induced NF-[kappa]B activation and apoptosis through death effector domains

Lu, Bin, January 2005 (has links)
Thesis (Ph. D.)--West Virginia University, 2005. / Title from document title page. Document formatted into pages; contains viii, 95 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 82-95).

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