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See detail[18F]FPRGD2 PET/CT imaging of integrin αvβ3 levels in patients with locally advanced rectal carcinoma
WITHOFS, Nadia ULg; Martinive, Philippe ULg; VANDERICK, Jean ULg et al

in European journal of nuclear medicine and molecular imaging (2016)

PURPOSE: Our primary objective was to determine if [18F]FPRGD2 PET/CT performed at baseline and/or after chemoradiotherapy (CRT) could predict tumour regression grade (TRG) in locally advanced rectal ... [more ▼]

PURPOSE: Our primary objective was to determine if [18F]FPRGD2 PET/CT performed at baseline and/or after chemoradiotherapy (CRT) could predict tumour regression grade (TRG) in locally advanced rectal cancer (LARC). Secondary objectives were to compare baseline [18F]FPRGD2 and [18F]FDG uptake, to evaluate the correlation between posttreatment [18F]FPRGD2 uptake and tumour microvessel density (MVD) and to determine if [18F]FPRGD2 and FDG PET/CT could predict disease-free survival. METHODS: Baseline [18F]FPRGD2 and FDG PET/CT were performed in 32 consecutive patients (23 men, 9 women; mean age 63 +/- 8 years) with LARC before starting any therapy. A posttreatment [18F]FPRGD2 PET/CT scan was performed in 24 patients after the end of CRT (median interval 7 weeks, range 3 - 15 weeks) and before surgery (median interval 4 days, range 1 - 15 days). RESULTS: All LARC showed uptake of both [18F]FPRGD2 (SUVmax 5.4 +/- 1.5, range 2.7 - 9) and FDG (SUVmax 16.5 +/- 8, range 7.1 - 36.5). There was a moderate positive correlation between [18F]FPRGD2 and FDG SUVmax (Pearson's r = 0.49, p = 0.0026). There was a moderate negative correlation between baseline [18F]FPRGD2 SUVmax and the TRG (Spearman's r = -0.37, p = 0.037), and a [18F]FPRGD2 SUVmax of >5.6 identified all patients with a complete response (TRG 0; AUC 0.84, 95 % CI 0.68 - 1, p = 0.029). In the 24 patients who underwent a posttreatment [18F]FPRGD2 PET/CT scan the response index, calculated as [(SUVmax1 - SUVmax2)/SUVmax1] x 100 %, was not associated with TRG. Post-treatment [18F]FPRGD2 uptake was not correlated with tumour MVD. Neither [18F]FPRGD2 nor FDG uptake predicted disease-free survival. CONCLUSION: Baseline [18F]FPRGD2 uptake was correlated with the pathological response in patients with LARC treated with CRT. However, the specificity was too low to consider its clinical routine use. [less ▲]

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See detailImplication of adamalysin proteases in mesothelioma
Sepult, Christelle ULg; Rocks, Natacha ULg; Bekaert, Sandrine et al

Conference (2015, September 30)

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See detailInvolvement of adamalysin proteases in modulations of tumor microenvironment and premetastatic niches
Donati, Kim ULg; Bekaert, Sandrine; Sepult, Christelle ULg et al

in European Respiratory Journal (2015, September), 46(59),

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See detailInvolvement of adamalysin proteases in modulations of tumor microenvironment and premetastatic niches.
Donati, Kim ULg; Bekaert, Sandrine; Sepult, Christelle ULg et al

Poster (2015, September)

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See detailMethod for increasing the bioavailability of inhaled compounds
Vanbever, Rita; Koussoroplis, Salomé; Cataldo, Didier ULg et al

Patent (2015)

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See detailRole of adamalysin proteases in modulations of tumor microenvironment and premetastatic niches
Donati, Kim ULg; Bekaert, Sandrine; Sepult, Christelle ULg et al

in Revue des Maladies Respiratoires (2015, March), 32

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See detailComment je traite ... une mucoviscidose
BENDAVID, G.; VANDERHELST, E.; LOUIS, Renaud ULg et al

in Revue Médicale de Liège (2015), 70(3), 108-114

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See detail18F-FPRGD2 PET/CT imaging of integrin αvβ3 in renal carcinomas: Correlation with histopathology
WITHOFS, Nadia ULg; SIGNOLLE, NICOLAS; SOMJA, Joan ULg et al

in Journal of Nuclear Medicine (The) (2015)

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See detailGrille de correction: déclinaisons de la perception et des réalisations
Bonnet, Pierre ULg; Delvenne, Philippe ULg; Defaweux, Valérie ULg et al

Conference (2015, January 29)

Un outil disponible on-line pour la correction des questions ouvertes à réponse courte ou longue (QROC et QROL) est utilisé depuis plusieurs années au sein de l’ULg. Les copies réponse des étudiants sont ... [more ▼]

Un outil disponible on-line pour la correction des questions ouvertes à réponse courte ou longue (QROC et QROL) est utilisé depuis plusieurs années au sein de l’ULg. Les copies réponse des étudiants sont scannées et corrigées sur un écran d’ordinateur. L’enseignant fournit l’énoncé de la question et une grille de correction suivant un canevas prédéfini. La correction évalue une série de critères regroupés par 4 à l’écran. Chaque critère défini est évalué au moyen d’une échelle horizontale allant de 0 à 100% suivant que le critère n’est pas rencontré (0%) ou qu’il est totalement développé (100%) par l’étudiant. L’enseignant peut graduer cette échelle en y indiquant des repères (indices). La pondération des différents critères est définie à priori ou à posteriori. Sur cette base de travail commune, nous analysons la façon dont cette grille est utilisée pour corriger des questions relatives à des matières médicales différentes enseignées par différents professeurs : histologie, anatomie, physiologie et anatomopathologie. L’analyse fait ressortir que malgré un canevas commun, les modalités de correction sont variables ce qui témoigne de la différence existant entre les matières, les compétences évaluées et, probablement, la sensibilité des enseignants. A l’inverse, ceci démontre la souplesse de l’outil adaptable à des types d’évaluations différents. [less ▲]

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See detailMesenchymal stem cells shed amphiregulin at the surface of lung carcinoma cells in a juxtacrine manner .
Carnet, Oriane ULg; Lecomte, Julie; Masset, Anne et al

in Neoplasia : An International Journal for Oncology Research (2015), 17(7), 552-63

Solid tumors comprise cancer cells and different supportive stromal cells, including mesenchymal stem cells (MSCs), which have recently been shown to enhance tumor growth and metastasis. We provide new ... [more ▼]

Solid tumors comprise cancer cells and different supportive stromal cells, including mesenchymal stem cells (MSCs), which have recently been shown to enhance tumor growth and metastasis. We provide new mechanistic insights into how bone marrow (BM)-derived MSCs co-injected with Lewis lung carcinoma cells promote tumor growth and metastasis in mice. The proinvasive effect of BM-MSCs exerted on tumor cells relies on an unprecedented juxtacrine action of BM-MSC, leading to the trans-shedding of amphiregulin (AREG) from the tumor cell membrane by tumor necrosis factor-α-converting enzyme carried by the BM-MSC plasma membrane. The released soluble AREG activates cancer cells and promotes their invasiveness. This novel concept is supported by the exploitation of different 2D and 3D culture systems and by pharmacological approaches using a tumor necrosis factor-α-converting enzyme inhibitor and AREG-blocking antibodies. Altogether, we here assign a new function to BM-MSC in tumor progression and establish an uncovered link between AREG and BM-MSC. [less ▲]

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