Publications de Elodie Debefve

Treatment of pleural malignancies by photo-induction combined to systemic chemotherapy: Proof of concept on rodent lung tumors and feasibility study on porcine chest cavities

Michaël Bensimon, Georges Wagnières, Elodie Debefve, Laurent Décosterd, Jean Yannis Perentes

Background: Low-dose, Visudyne (R)-mediated photodynamic therapy (photo-induction) was shown to selectively enhance tumor vessel transport causing increased uptake of systemically administered chemotherapy in various tumor types grown on rodent lungs. The ...

Wiley-Blackwell2015

Photodynamic induced uptake of liposomal doxorubicin to rat lung tumors parallels tumor vascular density

Hubert van den Bergh, Elodie Debefve, Laurent Décosterd

Visudyne®-mediated photodynamic therapy (PDT) at low drug/light conditions has shown to selectively enhance the uptake of liposomal doxorubicin in subpleural localized sarcoma tumors grown on rodent lungs without causing morphological alterations of the lu ...

2012

Photodynamic drug delivery enhancement in tumours does not depend on leukocyte-endothelial interaction in a human mesothelioma xenograft model

Hubert van den Bergh, Elodie Debefve, Hans-Anton Lehr

OBJECTIVES: The pre-treatment of tumour neovessels by low-level photodynamic therapy (PDT) improves the distribution of concomitantly administered systemic chemotherapy. The mechanism by which PDT permeabilizes the tumour vessel wall is only partially know ...

Oxford University Press2012

Photodynamic therapy enhances liposomal doxorubicin distribution in tumors during isolated perfusion of rodent lungs

Hubert van den Bergh, Elodie Debefve, Yi Wang

Background: Photodynamic therapy (PDT) at low drug-light conditions can enhance the transport of intravenously injected macromolecular therapeutics through the tumor vasculature. Here we determined the impact of PDT on the distribution of liposomal doxorub ...

Karger2011

Leukocyte-endothelial cell interaction is necessary for photodynamic therapy induced vascular permeabilization

Hubert van den Bergh, Elodie Debefve, Hans-Anton Lehr

Photodynamic therapy (PDT) affects vascular barrier function and thus increases vessel permeability. This phenomenon may be exploited to facilitate targeted drug delivery and may lead to a new clinical application of photodynamic therapy. Here, we investig ...

2011

Photodynamic Therapy Selectively Enhances Liposomal Doxorubicin Uptake in Sarcoma Tumors to Rodent Lungs

Hubert van den Bergh, Georges Wagnières, Elodie Debefve, Laurent Décosterd

Background: In specific conditions, photodynamic therapy (PDT) can enhance the distribution of macromolecules across the endothelial barrier in solid tumors. It was recently postulated that tumor neovessels were more responsive to PDT than the normal vascu ...

Wiley-Blackwell2010

Combination Therapy Using Verteporfin and Ranibizumab; Optimizing the Timing in the CAM Model

Hubert van den Bergh, Elodie Debefve

Combining photodynamic therapy (PDT) using verteporfin (Visudyne(R)) with ranibizumab (Lucentis(R)) can optimize the overall treatment outcome by providing more efficacy in vessel closure, and thus reduce the need for retreatment in patients with wet age-r ...

2009

Video monitoring of neovessel occlusion induced by photodynamic therapy with verteporfin (Visudyne(r)), in the CAM model

Hubert van den Bergh, Georges Wagnières, Elodie Debefve

The aim of the present study was to monitor photodynamic angioocclusion with verteporfin in capillaries. Details of this process were recorded under a microscope in real-time using a high-sensitivity video camera. A procedure was developed based on intrave ...

Springer Netherlands2008

Combination therapy using aspirin-enhanced photodynamic selective drug delivery

Hubert van den Bergh, Elodie Debefve

In photodynamic therapy (PDT), excitation of a drug by light leads to a cascade of biochemical processes that can cause closure of blood vessels. It has been observed clinically that significant short-term leakage from the irradiated vasculature can occur ...

Elsevier2007

Characterization and therapeutic exploitation of the vascular permeability induced by photodynamic therapy

Elodie Debefve

Photodynamic therapy (PDT) can be used to cause vascular collapse and blood flow stasis of the irradiated pathological neovascularisation appearing in several diseases such as age-related macular degeneration (AMD) and cancer. We hypothesized that this PDT ...

EPFL2007

Effect of nanoparticle size on the extravasation and the photothrombic activity of meso(p-tetracarboxyphenyl)porphyrin

Hubert van den Bergh, Elodie Debefve

Particle size should be optimized to achieve targeted and extended drug delivery to the affected tissues. We describe here the effects of the mean particle size on the pharmacokinetics and photothrombic activity of meso-tetra(carboxyphenyl)porphyrin (TCPP) ...

Elsevier2006

Photothrombic activity of m-THPC-loaded liposomal formulations: pre-clinical assessment on chick chorioallantoic membrane model

Hubert van den Bergh, Georges Wagnières, Elodie Debefve

The objective of this study was to evaluate the ability of meso-tetra(hydroxyphenyl)chlorin (m-THPC) encapsulated into liposomal formulations to occlude neovascularization. Two m-THPC formulations including conventional or plain liposomes (Foslip) based on ...

Elsevier2006

Inhibition of the expression and activity of cyclooxygenase-2 by chicory extract

Elodie Debefve

Chicory is a major source of fructans with reported prebiotic-bifidogenic properties. In the present study, the potential anti-inflammatory activities of chicory were investigated. Ethyl acetate chicory root extract produced a marked inhibition of prostagl ...

Elsevier2005

Encapsulation of porphyrins and chlorins in biodegradable nanoparticles: The effect of dye lipophilicity on the extravasation and the photothrombic activity. A comparative study

Hubert van den Bergh, François André Borle, Bernadette Pegaz-Toquet, Elodie Debefve

2005

Preclinical evaluation of a novel water-soluble chlorin E-6 derivative (BLC 1010) as photosensitizer for the closure of the neovessels

Hubert van den Bergh, Georges Wagnières, François André Borle, Bernadette Pegaz-Toquet, Elodie Debefve

2005