24 research outputs found
Valuing Environmental Services Using Contingent Valuation Method
This paper presents the results of two studies in Lao PDR that assessed people's willingness to pay (WTP) using the Contingent Valuation Methodology (CVM). The first study investigated the WTP of residents for the sustainable development and maintenance of urban parks in the city using Saysetha Park as the case study. In this study residents expressed that urban parks are very important to them as they are areas for relaxation and areas to conserve urban biodiversity. The WTP survey revealed that the residents' mean WTP is 10,741kip/month/household. With this amount, it was estimated that a monthly water bill surcharge of 3,000/kip/month/household may be recommended to maintain urban parks. The second study assessed the WTP for biodiversity conservation and sustainability in the Houay Nhang Protected Area. Using CVM, the WTP responses showed that the monthly contribution that would be acceptable to the people is 5,000 kip. The logit regression shows that this WTP value is influenced by bid prices, gender, and educational levels. The respondents recognized the importance of the protected area for environmental and biodiversity protection.contingent valuation, Lao PDR
Lung chemoembolization with drug eluting beads : in vivo evaluation of anticancer drug release
La chimioembolisation est une thĂ©rapie loco-rĂ©gionale qui consiste Ă injecter, au moyendâun microcathĂ©ter, un principe actif et un agent dâocclusion vasculaire de maniĂšre la plussĂ©lective possible dans les artĂšres nourriciĂšres du processus pathologique. Les microsphĂšresde chimioembolisation sont des microsphĂšres calibrĂ©es et chargeables en principe actif,dĂ©veloppĂ©es ces derniĂšres annĂ©es afin dâoptimiser la chimioembolisation et permettre unelibĂ©ration ciblĂ©e et contrĂŽlĂ©e du principe actif au sein du territoire pathologique. Lâutilisationde ces microsphĂšres nâa encore jamais Ă©tĂ© appliquĂ©e Ă la chimioembolisation du poumon. Ellepourrait ĂȘtre intĂ©ressante dans le traitement des tumeurs pulmonaires malignes en permettantune imprĂ©gnation de la tumeur par un anticancĂ©reux, tout en Ă©vitant une toxicitĂ© systĂ©miquede ce dernier et dans le traitement des hĂ©moptysies massives en Ă©vitant les rĂ©cidives, dues Ă une recanalisation des vaisseaux aprĂšs embolisation, par lâutilisation dâun inhibiteur duremodelage vasculaire.Notre travail a consistĂ© Ă Ă©valuer les performances de libĂ©ration de lâirinotĂ©can et dusirolimus Ă partir des microsphĂšres de chimioembolisation au niveau systĂ©mique et au niveautissulaire, sur des modĂšles de chimioembolisation pulmonaire chez la brebis. Nos rĂ©sultats ontmontrĂ© que les microsphĂšres de chimioembolisation ne permettaient pas une dĂ©livrancetissulaire prolongĂ©e de lâirinotĂ©can pour espĂ©rer obtenir une imprĂ©gnation efficace dâun lobepulmonaire. Les microsphĂšres chargĂ©es en sirolimus semblent permettre une libĂ©rationcontrĂŽlĂ©e du principe actif et paraissent intĂ©ressantes pour prĂ©venir la recanalisation.Les microsphĂšres de chimioembolisation doivent ĂȘtre amĂ©liorĂ©es pour permettre unelibĂ©ration prolongĂ©e du principe actif. Des Ă©tudes complĂ©mentaires notamment en termesdâefficacitĂ© (modĂšle tumoral) doivent ĂȘtre rĂ©alisĂ©es pour montrer lâintĂ©rĂȘt dâutiliser lachimioembolisation pulmonaire par microsphĂšres en pratique clinique.Chemoembolization is a loco-regional therapy, which consists of delivering selectively and directly to the pathologic area, by means of catheters through the vasculature, a drug and an embolic agent. The purpose is to achieve nutrient and oxygen starvation of the tumor, to minimize chemotherapy wash-out with prolonged contact with tumor tissue and therefore to increase the local drug concentration and reduce systemic toxicity. Drug eluting beads are a new generation of calibrated embolization beads, which behave as a drug delivery system. They have been developed in order to optimize chemoembolization and to control precisely the release and the dose of drug into the treatment site. Drug eluting beads have never been used for lung chemoembolization. It may be interesting to evaluate them in the treatment of lung tumors in order to impregnate the tumor with an anticancer drug while avoiding systemic toxicity of this drug and in the treatment of massive hemoptysis to avoid recurrences, induced by a recanalization of vessels after embolization, by using an inhibitor on vascular remodeling. Our purpose was to evaluate the release performances of irinotecan and sirolimus from drug eluting beads, in systemic circulation and in lung tissue, in sheep lung chemoembolization models. Our results showed that drug eluting beads did not allow a sufficient sustained delivery of irinotecan to expect to obtain an effective impregnation of a pulmonary lobe. Sirolimus eluting beads seem to allow a drug controlled release and appear interesting to prevent recanalization. Drug eluting beads have to be improved in order to allow sustained and controlled release of the drug. Complementary studies especially efficacy studies have to be investigated for showing the interest to use lung chemoembolization with drug eluting beads in clinical practice
MicrosphÚres de chimioembolisation appliquées au poumon : étude de la libération in vivo d'anticancéreux
Chemoembolization is a loco-regional therapy, which consists of delivering selectively and directly to the pathologic area, by means of catheters through the vasculature, a drug and an embolic agent. The purpose is to achieve nutrient and oxygen starvation of the tumor, to minimize chemotherapy wash-out with prolonged contact with tumor tissue and therefore to increase the local drug concentration and reduce systemic toxicity. Drug eluting beads are a new generation of calibrated embolization beads, which behave as a drug delivery system. They have been developed in order to optimize chemoembolization and to control precisely the release and the dose of drug into the treatment site. Drug eluting beads have never been used for lung chemoembolization. It may be interesting to evaluate them in the treatment of lung tumors in order to impregnate the tumor with an anticancer drug while avoiding systemic toxicity of this drug and in the treatment of massive hemoptysis to avoid recurrences, induced by a recanalization of vessels after embolization, by using an inhibitor on vascular remodeling. Our purpose was to evaluate the release performances of irinotecan and sirolimus from drug eluting beads, in systemic circulation and in lung tissue, in sheep lung chemoembolization models. Our results showed that drug eluting beads did not allow a sufficient sustained delivery of irinotecan to expect to obtain an effective impregnation of a pulmonary lobe. Sirolimus eluting beads seem to allow a drug controlled release and appear interesting to prevent recanalization. Drug eluting beads have to be improved in order to allow sustained and controlled release of the drug. Complementary studies especially efficacy studies have to be investigated for showing the interest to use lung chemoembolization with drug eluting beads in clinical practice.La chimioembolisation est une thĂ©rapie loco-rĂ©gionale qui consiste Ă injecter, au moyendâun microcathĂ©ter, un principe actif et un agent dâocclusion vasculaire de maniĂšre la plussĂ©lective possible dans les artĂšres nourriciĂšres du processus pathologique. Les microsphĂšresde chimioembolisation sont des microsphĂšres calibrĂ©es et chargeables en principe actif,dĂ©veloppĂ©es ces derniĂšres annĂ©es afin dâoptimiser la chimioembolisation et permettre unelibĂ©ration ciblĂ©e et contrĂŽlĂ©e du principe actif au sein du territoire pathologique. Lâutilisationde ces microsphĂšres nâa encore jamais Ă©tĂ© appliquĂ©e Ă la chimioembolisation du poumon. Ellepourrait ĂȘtre intĂ©ressante dans le traitement des tumeurs pulmonaires malignes en permettantune imprĂ©gnation de la tumeur par un anticancĂ©reux, tout en Ă©vitant une toxicitĂ© systĂ©miquede ce dernier et dans le traitement des hĂ©moptysies massives en Ă©vitant les rĂ©cidives, dues Ă une recanalisation des vaisseaux aprĂšs embolisation, par lâutilisation dâun inhibiteur duremodelage vasculaire.Notre travail a consistĂ© Ă Ă©valuer les performances de libĂ©ration de lâirinotĂ©can et dusirolimus Ă partir des microsphĂšres de chimioembolisation au niveau systĂ©mique et au niveautissulaire, sur des modĂšles de chimioembolisation pulmonaire chez la brebis. Nos rĂ©sultats ontmontrĂ© que les microsphĂšres de chimioembolisation ne permettaient pas une dĂ©livrancetissulaire prolongĂ©e de lâirinotĂ©can pour espĂ©rer obtenir une imprĂ©gnation efficace dâun lobepulmonaire. Les microsphĂšres chargĂ©es en sirolimus semblent permettre une libĂ©rationcontrĂŽlĂ©e du principe actif et paraissent intĂ©ressantes pour prĂ©venir la recanalisation.Les microsphĂšres de chimioembolisation doivent ĂȘtre amĂ©liorĂ©es pour permettre unelibĂ©ration prolongĂ©e du principe actif. Des Ă©tudes complĂ©mentaires notamment en termesdâefficacitĂ© (modĂšle tumoral) doivent ĂȘtre rĂ©alisĂ©es pour montrer lâintĂ©rĂȘt dâutiliser lachimioembolisation pulmonaire par microsphĂšres en pratique clinique
Lung chemoembolization with drug eluting beads : in vivo evaluation of anticancer drug release
La chimioembolisation est une thĂ©rapie loco-rĂ©gionale qui consiste Ă injecter, au moyendâun microcathĂ©ter, un principe actif et un agent dâocclusion vasculaire de maniĂšre la plussĂ©lective possible dans les artĂšres nourriciĂšres du processus pathologique. Les microsphĂšresde chimioembolisation sont des microsphĂšres calibrĂ©es et chargeables en principe actif,dĂ©veloppĂ©es ces derniĂšres annĂ©es afin dâoptimiser la chimioembolisation et permettre unelibĂ©ration ciblĂ©e et contrĂŽlĂ©e du principe actif au sein du territoire pathologique. Lâutilisationde ces microsphĂšres nâa encore jamais Ă©tĂ© appliquĂ©e Ă la chimioembolisation du poumon. Ellepourrait ĂȘtre intĂ©ressante dans le traitement des tumeurs pulmonaires malignes en permettantune imprĂ©gnation de la tumeur par un anticancĂ©reux, tout en Ă©vitant une toxicitĂ© systĂ©miquede ce dernier et dans le traitement des hĂ©moptysies massives en Ă©vitant les rĂ©cidives, dues Ă une recanalisation des vaisseaux aprĂšs embolisation, par lâutilisation dâun inhibiteur duremodelage vasculaire.Notre travail a consistĂ© Ă Ă©valuer les performances de libĂ©ration de lâirinotĂ©can et dusirolimus Ă partir des microsphĂšres de chimioembolisation au niveau systĂ©mique et au niveautissulaire, sur des modĂšles de chimioembolisation pulmonaire chez la brebis. Nos rĂ©sultats ontmontrĂ© que les microsphĂšres de chimioembolisation ne permettaient pas une dĂ©livrancetissulaire prolongĂ©e de lâirinotĂ©can pour espĂ©rer obtenir une imprĂ©gnation efficace dâun lobepulmonaire. Les microsphĂšres chargĂ©es en sirolimus semblent permettre une libĂ©rationcontrĂŽlĂ©e du principe actif et paraissent intĂ©ressantes pour prĂ©venir la recanalisation.Les microsphĂšres de chimioembolisation doivent ĂȘtre amĂ©liorĂ©es pour permettre unelibĂ©ration prolongĂ©e du principe actif. Des Ă©tudes complĂ©mentaires notamment en termesdâefficacitĂ© (modĂšle tumoral) doivent ĂȘtre rĂ©alisĂ©es pour montrer lâintĂ©rĂȘt dâutiliser lachimioembolisation pulmonaire par microsphĂšres en pratique clinique.Chemoembolization is a loco-regional therapy, which consists of delivering selectively and directly to the pathologic area, by means of catheters through the vasculature, a drug and an embolic agent. The purpose is to achieve nutrient and oxygen starvation of the tumor, to minimize chemotherapy wash-out with prolonged contact with tumor tissue and therefore to increase the local drug concentration and reduce systemic toxicity. Drug eluting beads are a new generation of calibrated embolization beads, which behave as a drug delivery system. They have been developed in order to optimize chemoembolization and to control precisely the release and the dose of drug into the treatment site. Drug eluting beads have never been used for lung chemoembolization. It may be interesting to evaluate them in the treatment of lung tumors in order to impregnate the tumor with an anticancer drug while avoiding systemic toxicity of this drug and in the treatment of massive hemoptysis to avoid recurrences, induced by a recanalization of vessels after embolization, by using an inhibitor on vascular remodeling. Our purpose was to evaluate the release performances of irinotecan and sirolimus from drug eluting beads, in systemic circulation and in lung tissue, in sheep lung chemoembolization models. Our results showed that drug eluting beads did not allow a sufficient sustained delivery of irinotecan to expect to obtain an effective impregnation of a pulmonary lobe. Sirolimus eluting beads seem to allow a drug controlled release and appear interesting to prevent recanalization. Drug eluting beads have to be improved in order to allow sustained and controlled release of the drug. Complementary studies especially efficacy studies have to be investigated for showing the interest to use lung chemoembolization with drug eluting beads in clinical practice
Evaluation de la toxicité systémique de la doxorubicine aprÚs chimioembolisation lipiodolée du foie
PARIS-BIUP (751062107) / SudocSudocFranceF
Place du Bortezomib dans la prise en charge des lymphomes non hodgkiniens de type T dans un centre hospitalier universitaire parisien
PARIS-BIUP (751062107) / SudocSudocFranceF
Ăvaluation de l'efficacitĂ© et de la toxicitĂ© du protocole FOLFOX en premiĂšre ligne dans le cancer colorectal mĂ©tastatique chez des patients en surpoids ou obĂšses ou ayant une surface corporelle supĂ©rieure Ă 2 m3
CHATENAY M.-PARIS 11-BU Pharma. (920192101) / SudocSudocFranceF