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Endothelin-1 in children with chronic renal failure
Authors:Isabelle Blazy  Michèle Déchaux  Marina Charbit  Danièle Brocart  Jean-Claude Souberbielle  Marie France Gagnadoux  François Guillot  Charles Sachs
Affiliation:(1) Department of Physiology, C. H. U. Necker-Enfants Malades, 156 rue de Vaugirard, F-75015 Paris, France;(2) Department of Paediatrics (Nephrology Division), C. H. U. Necker-Enfants Malades, 156 rue de Vaugirard, F-75015 Paris, France;(3) Villeneuve Saint Georges Hospital, Villeneuve Saint Georges City, France
Abstract:Endothelin-1 (ET-1) was meansured after extraction from plasma of normal adults (5.9±1.9 pg/ml,n=22), normal children (7.1±1.86 pg/ml,n=29), nonhaemodialysed children with chronic renal failure (CRF) (11.1±1.8 pg/ml),n=10), renal graft recipients (9.5±3.4 pg/ml,n=37), haemodialysed children 24 h after a haemodialysis session (20.02±10.9 pg/ml,n=26) and haemodialysed children before and after a haemodialysis session (15.31±10.6 and 13.8±8.5 respectively,n=14). A sensitive and specific radioimmunoassay was used. ET-1 was significantly higher in non-haemodialysed CRF children and in renal graft recipients than in normal children (P<0.001 andP<0.01, respectively) and significantly higher in haemodialysed children when compared with normal children, non-haemodialysed CRF children and renal graft recipients (P<0.001). ET-1 concentrations were similar in normal children and normal adults. ET-1 was inversely correlated with glomerular filtration rate in non-haemodialysed CRF children (r=–0.39,P<0.01) and positively correlated with extracellular volume in haemodialysed children (r=0.435,P<0.03). After haemodialysis, ET-1 increased in 6 and decreased in 8 of the 14 children studied before and after a haemodialysis session.
Keywords:Endothelin-1  Radioimmunoassay  Renal insufficiency  Haemodialysis
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