29 resultados para membrane filtration


Relevância:

100.00% 100.00%

Publicador:

Resumo:

Dissertation presented to obtain the Ph.D degree in Engineering and Technology Sciences, Chemical Engineering.

Relevância:

70.00% 70.00%

Publicador:

Resumo:

Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Engenharia do Ambiente,perfil Sanitária

Relevância:

70.00% 70.00%

Publicador:

Resumo:

Dissertation presented to obtain the Ph.D degree in Engineering and Technology Sciences, Biotechnology.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The EM3E Master is an Education Programme supported by the European Commission, the European Membrane Society (EMS), the European Membrane House (EMH), and a large international network of industrial companies, research centres and universities

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The EM3E Master is an Education Programme supported by the European Commission, the European Membrane Society (EMS), the European Membrane House (EMH), and a large international network of industrial companies, research centres and universities (http://www.em3e.eu)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Journal of Electroanalytical Chemistry 541 (2003) 153-162

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Background/Aims: Unconjugated bilirubin (UCB) impairs crucial aspects of cell function and induces apoptosis in primary cultured neurones. While mechanisms of cytotoxicity begin to unfold, mitochondria appear as potential primary targets. Methods: We used electron paramagnetic resonance spectroscopy analysis of isolated rat mitochondria to test the hypothesis that UCB physically interacts with mitochondria to induce structural membrane perturbation, leading to increased permeability, and subsequent release of apoptotic factors. Results: Our data demonstrate profound changes on mitochondrial membrane properties during incubation with UCB, including modified membrane lipid polarity and fluidity (P , 0:01), as well as disrupted protein mobility(P , 0:001). Consistent with increased permeability, cytochrome c was released from the intermembrane space(P , 0:01), perhaps uncoupling the respiratory chain and further increasing oxidative stress (P , 0:01). Both ursodeoxycholate, a mitochondrial-membrane stabilising agent, and cyclosporine A, an inhibitor of the permeability transition, almost completely abrogated UCB-induced perturbation. Conclusions: UCB directly interacts with mitochondria influencing membrane lipid and protein properties, redox status, and cytochrome c content. Thus, apoptosis induced by UCB may be mediated, at least in part, by physical perturbation of the mitochondrial membrane. These novel findings should ultimately prove useful to our evolving understanding of UCB cytotoxicity.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Engenharia do Ambiente, perfil Sanitária

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Dissertação apresentada para obtenção do Grau de Doutor em Engenharia Química, especialidade de Operações Unitárias e Fenómenos de Transferência, pela Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Dissertação para obtenção do Grau de Mestre em Genética Molecular e Biomedicina

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Dissertação para obtenção do Grau de Doutor em Engenharia Química, especialidade de Engenharia Bioquímica

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Protein Sci. 2009 Mar;18(3):619-28. doi: 10.1002/pro.69.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

J Biol Inorg Chem (2008) 13:1321–1333 DOI 10.1007/s00775-008-0416-1