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Hubert van den Bergh

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Publications associées (145)

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Optical Characterization of an Intra-Arterial Light and Drug Delivery System for Photodynamic Therapy of Atherosclerotic Plaque

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger, Andreas Pitzschke, Ying Xiao

Although the versatility of photodynamic therapy (PDT) is well established, the technical aspects of light delivery systems vary significantly depending on the targeted organ. This article describes the optical properties of a light and drug delivery syste ...

2020

In vivo autofluorescence imaging of early cancers in the human tracheobronchial tree with a spectrally optimized system

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger

The changes in the autofluorescence characteristics of the bronchial tissue is of crucial interest as a cancer diagnostic tool. Evidence exists that this native fluorescence or autofluorescence of bronchial tissues changes when they turn dysplastic and to ...

SPIE Society of Photo-optical Instrumentation Engineers2003

Absolute autofluorescence spectra of human healthy, metaplastic, and early cancerous bronchial tissue in vivo

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger

Autofluorescence is emerging as a useful tool for the detection of early cancers in the bronchi. It has already produced interesting results, which have been implemented in commercial imaging devices. Their design relies on the spectroscopy of the tissues ...

2001

Noninvasive determination of the optical properties of two-layered turbid media

Hubert van den Bergh, Georges Wagnières

Light propagation in two-layered turbid media having an infinitely thick second layer is investigated in the steady-state, frequency, and time domains. A solution of the diffusion approximation to the transport equation is derived by employing the extrapol ...

1998

Antibody-indocyanin conjugates for immunophotodetection of human squamous cell carcinoma in nude mice

Hubert van den Bergh, Georges Wagnières

The authors have recently shown that immunophotodetection of human colon carcinomas in nude mice and in patients is possible by using anti-carcinoembryonic antigen monoclonal antibodies (MAb) coupled to fluorescein. The most common clin. application of pho ...

1994

Photodynamic therapy for the treatment of atherosclerotic plaque: Lost in translation?

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger

Acute coronary syndrome is a life-threatening condition of utmost clinical importance, which, despite recent progress in the field, is still associated with high morbidity and mortality. Acute coronary syndrome results from a rupture or erosion of vulnerab ...

Wiley2017

In-vivo fluence rate effect in photodynamic therapy of early cancers with tetra(m-hydroxyphenyl)chlorin

Hubert van den Bergh, Georges Wagnières

Several parameters affect clin. trials in photodynamic therapy and influence the therapeutic outcome. Beside drug dose, light dose, drug-light interval and other variables, the fluence rate is a parameter that can influence the therapeutic results. In this ...

1996

Angiostatic kinase inhibitors to sustain photodynamic angio-occlusion

Hubert van den Bergh, Patrycja Nowak-Sliwinska, Andrea Brett Gasser, Blaise Lovisa

Targeted angiostatic therapy receives major attention for the treatment of cancer and exudative age-related macular degeneration (AMD). Photodynamic therapy (PDT) has been used as an effective clinical approach for these diseases. Since PDT can cause an an ...

2012

EPR and spectrophotometric studies of free radicals (O2.-, .OH, BPD-MA.-) and singlet oxygen (1O2) generated by irradiation of benzoporphyrin derivative monoacid ring A

Hubert van den Bergh, Georges Wagnières

Benzoporphyrin deriv. monoacid ring A [BPD-MA (I)], a chlorin-type mol., is a new photosensitizer currently in phase II clin. trials for the treatment by photodynamic therapy of cancerous lesions, psoriasis and pathol. neovascularization. The photochem. (t ...

1997

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

Human serum albumin binding and cytotoxicity studies of surfactant–cobalt(III) complex containing 1,10-phenanthroline ligand

Hubert van den Bergh, Georges Wagnières

The characteristics of the binding reaction of surfactant-cobalt(III) complex, cis-[Co(phen)(2)(C14H29NH2)]Cl-2 center dot 3H(2)O (phen =1,10-phenanthroline, C14H29NH2 = tetradecylamine) with human serum albumin (HSA) were studied by fluorescence and UV-vi ...

Elsevier2011

Imidazoacridinone-dependent lysosomal photodestruction: a pharmacological Trojan horse approach to eradicate multidrug-resistant cancers

Hubert van den Bergh, Patrycja Nowak-Sliwinska

Multidrug resistance (MDR) remains a primary hindrance to curative cancer therapy. Thus, introduction of novel strategies to overcome MDR is of paramount therapeutic significance. Sequestration of chemotherapeutics in lysosomes is an established mechanism ...

2012

A streamlined search technology for identification of synergistic drug combinations

Paul Joseph Dyson, Hubert van den Bergh, Patrycja Nowak-Sliwinska, Andrea Brett Gasser

A major key to improvement of cancer therapy is the combination of drugs. Mixing drugs that already exist on the market may offer an attractive alternative. Here we report on a new model-based streamlined feedback system control (s-FSC) method, based on a ...

Nature Publishing Group2015

Photodetection of early human bladder cancer based on the fluorescence of 5-aminolaevulinic acid hexylester-induced protoporphyrin IX: a pilot study

Hubert van den Bergh, Georges Wagnières, Matthieu Philippe Emmanuel Zellweger

Exogenous administration of 5-aminolaevulinic acid (ALA) is becoming widely used to enhance the endogenous synthesis of protoporphyrin IX (PpIX) in photodynamic therapy (PDT) and fluorescence photodetection (PD). Recently, results have shown that the chemi ...

1999

Like a Bolt from the Blue: Phthalocyanines in Biomedical Optics

Hubert van den Bergh

The purpose of this review is to compile preclinical and clinical results on phthalocyanines (Pcs) as photosensitizers (PS) for Photodynamic Therapy (PDT) and contrast agents for fluorescence imaging. Indeed, Pcs are excellent candidates in these fields du ...

Molecular Diversity Preservation International2012

Angiogenesis inhibition by the maleimide-based small molecule GNX-686

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

We investigated the anti-angiogenic properties of GNX-686, a newly identified maleimide-based small molecule. In vitro studies on HUVEC showed that GNX-686 inhibited cell growth with an ED50 of 20-25 mu M, while human HeLa tumor cells and non-transformed e ...

Elsevier2012

Processing of fluorescence angiograms for the quantification of vascular effects induced by anti-angiogenic agents in the CAM model

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

The chicken embryo chorioallantoic membrane (CAM) is widely used as an in vivo model to study the vascular effects of angiogenesis modulating agents. The main goal of the present study was to develop and validate a quantitative method to characterize time- ...

Elsevier2010

Organometallic Ruthenium(II) Arene Compounds with Antiangiogenic Activity

Paul Joseph Dyson, Hubert van den Bergh, Georges Wagnières, Patrycja Nowak-Sliwinska, Angela Casini, Alexey Nazarov

The antimetastatic ruthenium (II) compounds [Ru(eta(6)-p-cymene)Cl-2(PTA)] (PTA = 1,3,5-triaza-7-phosphaadamantane) (RAPTA-C) and [Ru(eta(6)-toluene)Cl-2(PTA)] (RAPTA-T), as well as their analogues [Ru(eta(6)-p-cymene)Cl-2(DAPTA)] (DAPTA = (3,7-diacetyl-1, ...

2011

Frequency-domain fluorescence lifetime imaging for endoscopic clinical cancer photodetection: Apparatus design and preliminary results

Hubert van den Bergh, Georges Wagnières, André Studzinski

We describe a new fluorescence imaging device for clin. cancer photodetection in hollow organs in which the tumor/normal tissue contrast is derived from the fluorescence lifetime of endogenous or exogenous fluorochromes. This fluorescence lifetime contrast ...

Springer US1997

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

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

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