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- W2010142785 abstract "Étudier le rôle pronostique de la neutrophil gelatinase-associated lipocalin (NGAL) et de la matrix métalloprotéinase 9 (MMP-9) dans le carcinome rénal à cellules claires (CRCC). Chez des patients ayant un CRCC, l’expression de NGAL et MMP-9 a été mesurée dans les tissus tumoraux par immunohistochimie et dans les sérums en Enzyme Linked Immunosorbent Assay (Elisa). Les résultats ont été confrontés aux données anatomocliniques. Soixante-quatorze patients opérés d’un CRCC au CHU de Rennes entre 2003 et 2009 ont été inclus. Des fortes concentrations sériques du complexe NGAL–MMP-9 avaient une signification péjorative en survie sans progression (SSP) (33,3 mois contre 47,3 mois, p = 0,016) et en survie spécifique (42,5 mois contre 51,9 mois, p < 0,047). De même, des concentrations sériques élevées de NGAL étaient péjoratives en termes de SSP (13,6 mois contre 41,6 mois, p = 0,04). Paradoxalement, NGAL n’était pas exprimée dans les cellules tumorales des CRCC mais il était exprimé par les polynucléaires neutrophiles (PNN) intratumoraux. Nous avons montré qu’une forte densité des PNN marqués par NGAL avait une valeur pronostique péjorative en termes de SSP et de survie spécifique (36,9 mois contre 56,1 mois, p < 0,006). Cette étude a montré le rôle pronostique de NGAL et surtout du complexe NGAL–MMP-9 sérique dans le CRCC et a confirmé le rôle pronostique péjoratif de l’infiltrat des PNN sur le site tumoral. To determine the prognostic significance of the neutrophil gelatinase-associated lipocalin (NGAL) and the matrix metalloproteinase 9 (MMP-9) in clear cell renal cell carcinoma (CCRCC). NGAL and MMP-9 expression were quantified by immunohistochemistry in clear renal cell carcinoma tissues and in sera by Enzyme Linked Immunosorbent Assay (Elisa). Results were associated with clinicopathologic data. Seventy-four patients operated for CCRCC in Rennes between 2003 and 2009 were included. High concentrations of NGAL–MMP-9 complex in serum were associated with short progression free survival (PFS) (33.3 months versus 47.3 months, P = 0.016) and poor overall survival (42.5 months versus 51.9 months, P < 0.047). High NGAL concentrations in serum were also associated with shorter PFS (13.6 months versus 41.6 months, P = 0.04). However, no NGAL expression was observed in renal tumor cells. Interestingly, NGAL was expressed by neutrophils infiltrating CCRCC and we showed that the density of NGAL expressing neutrophils was associated with pejorative PFS and survival (36.9 months versus 56.1 months, P < 0.006). In this study, we showed the pejorative significance of NGAL–MMP-9 complex and NGAL rates in serum of CCRCC. We also confirmed that density of NGAL expressing neutrophils in CCRCC was associated with poor outcome." @default.
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- W2010142785 date "2011-11-01" @default.
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- W2010142785 title "La neutrophil gelatinase-associated lipocalin, ou LCN 2, facteur d’agressivité dans le carcinome rénal à cellules claires (CRCC)" @default.
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- W2010142785 doi "https://doi.org/10.1016/j.purol.2011.06.005" @default.
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