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Publications associées (28)

Real-time, in vivo measurement of tissular pO(2) through the delayed fluorescence of endogenous protoporphyrin IX during photodynamic therapy

Hubert van den Bergh, Georges Wagnières, Filippo Piffaretti, Cédric Xavier Paulou, Patrycja Nowak-Sliwinska, Anna Maria Novello

Tissular oxygen concentration plays a key role during photodynamic therapy (PDT). Therefore, monitoring its local oxygen partial pressure (pO(2)) may help predict and/or control the outcome of a PDT treatment. The first real-time, in vivo measurements of t ...

SPIE Society of Photo-optical Instrumentation Engineers2012

Study of the pO2-sensitivity of the dendrimeric and free forms of Pd-meso-tetra(4-carboxyphenyl)porphyrin, incorporated or not in chitosan-based nanoparticles

Hubert van den Bergh, Georges Wagnières, Peter Käuper, Patrycja Nowak-Sliwinska

The concentration of oxygen and its rate of consumption are important factors in certain medical treatments, such as radiotherapy and photodynamic therapy (PDT). Measuring the tissue concentration of oxygen or its partial pressure (pO2) can be achieved by ...

Schweizerische Chemische Gesellschaft2011

Femtosecond UV Studies of the Electronic Relaxation Processes in Cytochrome c

Majed Chergui, Olivier Christian Bräm, Andrea Cannizzo, Cristina Consani

We report on an experimental study with UV and visible ultrafast time-gated emission and transient absorption of the early photodynamics of horse heart Cytochrome c in both ferric and ferrous redox states. A clear separation in time and energy of tryptopha ...

2011

In vitro and in vivo photocytotoxicity of boron dipyrromethene derivatives for photodynamic therapy

Hubert van den Bergh, Georges Wagnières, Patrycja Nowak-Sliwinska, Siang Hui Lim

To understand the effects of substitution patterns on photosensitizing the ability of boron dipyrromethene (BODIPY), two structural variations that either investigate the effectiveness of various iodinated derivatives to maximize the "heavy atom effect" or ...

American Chemical Society2010

Development of Minimally-Invasive Optical Methods to Individualize the Doses Used for Therapeutic Applications of Light

Filippo Piffaretti

Despite the experience gained over several decades in various types of light-based medical treatments, the optimization of the corresponding therapeutic protocols and accurate forecasting of their outcome have not yet been achieved in many cases. The diffi ...

EPFL2010

Electron Localization Dynamics in the Triplet Excited State of Ru(bpy)3]2+ in Aqueous Solution

Majed Chergui, Marc-Etienne Moret, Ursula Röthlisberger, Ivano Tavernelli

Hybrid DFT/classical molecular dynamics of the long-lived triplet excited state of [Ru(bpy)3]2+ (bpy=2,2-bipyridine) in aqueous solution is used to investigate the solvent-mediated electron localization and dynamics in the triplet metal-to-ligand charge-tr ...

2010

Chitosan-based nanogels for selective delivery of photosensitizers to macrophages and improved retention in and therapy of articular joints

Georges Wagnières, Jutta Christine Wandrey, Jérôme Barge, Lucienne Lagopoulos, Frédéric Schmitt

Macrophages play key roles in inflammatory disorders. Therefore, they are targets of treatments aiming at their local destruction in inflammation sites. However, injection of low molecular mass therapeutics, including photosensitizers, in inflamed joints r ...

Elsevier2010

Ruthenium Porphyrin Compounds for Photodynamic Therapy of Cancer

Paul Joseph Dyson, Wee Han Ang, Frédéric Schmitt

Five 5,10,15,20-tetra(4-pyridyl)porphyrin (TPP) areneruthenium(II) derivs., a p-cymeneosmium, a pentamethylcyclopentadienyliridium and a pentamethylcyclopentadienylrhodium analog were prepd. and characterized as potential photosensitizing chemotherapeutic ...

2008

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