Photosensitiser
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Photodynamic antimicrobial chemotherapy (PACT) for the treatment of malaria, leishmaniasis and trypanosomiasis
A photodynamic effect occurs when photosensitiser molecules absorb light and dissipate the absorbed energy by transferring it to biological acceptors (usually oxygen), generating an excess of reactive species that are able to force cells into death pathways. Several tropical diseases present physiopathological aspects that are accessible to the application o
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-01
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2. Degradação de poliestirenossulfonato de sódio fotossensibilizada pelo corante QTX / Degradation of poly(styrenesulfonate) photosensitised by QTX dye
The poly(styrenesulfonate) (PSS) photosensitised by 2-hydroxy-3-(3,4-dimethyl-9-oxo-9H-thioxanthen-2-yloxy)-N,N,N-trimethyl-1-propanium chloride (QTX) solution degradation mechanism was investigated. Initially, the photodegradation of QTX in aqueous solution was studied. The photoproducts generated photolysis were characterized as being sulfones and sulfoxid
Publicado em: 2009
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3. Construção e estudos de perfomance de um reator fotoquímico tipo CPC ("Compound Parabolic Concentrator")
A CPC (Compound Parabolic Concentrator) reactor was projected and constructed aiming to promote the degradation of the organic matter present in considerable volumes of aqueous effluents, under the action of solar radiation. The essays were done using a model effluent which consists of a mixture of fragments of a sodium salt of lignosulphonic acid possessing
Química Nova. Publicado em: 2005-10
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4. Feasibility of laser targeted photo-occlusion of ocular vessels.
AIMS/BACKGROUND--Neovascularisation occurs in many major ocular diseases such as diabetes, age-related macular degeneration, and sickle cell disease. Laser photocoagulation is typically used to obliterate the vessels but it also causes severe damage to adjacent normal tissues. This is a very significant limitation especially in the treatment of choroidal neo
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5. Spontaneous and photosensitiser-induced DNA single-strand breaks and formamidopyrimidine-DNA glycosylase sensitive sites at nucleotide resolutionin the nuclear and mitochondrial DNA of Saccharomyces cerevisiae.
A system is described for mapping oxidative DNA damage (sites sensitive to formamidopyrimidine-DNA glycosylase and single-strand breaks) at nucleotide resolution in the nuclear and mitochondrial DNA of Saccharomyces cerevisiae. Our 3' end labelling method is sensitive and was first developed using the well-studied inducer of oxidative DNA damage, methylene b
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6. Experimental studies to assess the potential of photodynamic therapy for the treatment of bronchial carcinomas.
BACKGROUND--Photodynamic therapy (PDT) is a technique for producing localised tissue necrosis with light after prior administration of a photosensitising drug. There is some selectivity of uptake of photosensitisers in malignant tissue, although this is difficult to exploit. Full thickness necrosis in normal and neoplastic colon heals without perforation bec