Renal function impairment induced by change in posture in @entity1 with XXXX and @entity843 .

@entity1 @entity82 @entity1369 @entity1575 @entity843 @entity1372 @entity1011 @entity916 @entity1063
The assumption of upright posture by @entity1 with @entity1575 leads to striking activation of adrenergic and @entity916 -angiotensin systems. The tilting-induced modifications in renal function of eight healthy controls and 14 untreated @entity1 with @entity1575 and @entity843 were related to plasma concentrations of @entity1063 , @entity916 activity and @entity1369 . All @entity1 had preserved renal blood perfusion. All parameters were evaluated during bed rest for two hours and in the sitting posture for one hour. Basal plasma @entity916 activity (0.1 greater than p greater than 0.05), @entity1369 and @entity1063 concentrations (p less than or equal to 0.01) were raised in cirrhotics. The renal function tests ( @entity1011 clearance, filtered @entity1372 , tubular rejection fraction, urinary @entity1372 excretion) were significantly reduced in @entity82 . Under basal conditions, in cirrhotic @entity1 tubular rejection fraction and urinary @entity1372 excretion were inversely related to both @entity1063 and @entity1369 concentrations. After tilting, the @entity1063 and @entity1369 integrated outputs (sigma delta) were significantly greater in @entity82 . All renal function tests significantly decreased in cirrhotics, whereas @entity1011 clearance only significantly decreased in controls. @entity1 's tubular rejection fraction of @entity1372 and @entity1372 excretion were related to sigma delta aldosteronaemia (r = -0.72; p less than 0.01), but no longer to sigma delta plasma @entity1063 .
