title: [Changes in the plasma and erythrocyte concentrations of rubidium in patients with renal failure].
abstract: Rubidium concentrations were measured by flame emission spectrophotometry in whole blood, plasma and red cells from male and female controls and from dialyzed and non-dialyzed patients of both sexes with chronic renal failure. Rubidium concentrations (mumol/l) in male and female controls respectively were: 2.29 +/- 0.29 and 1.96 +/- 0.46 in plasma: 36..79 +/- 5.90 and 30.19 +/- 6.11 in whole blood; 74.57 +/- 10.37 and 72.22 +/- 12.76 in erythrocytes. The red cell rubidium/plasma rubidium ratios were 32.6 in males and 38.3 in females. Compared with controls, dialyzed male and female patients showed, before dialysis, a decrease in rubidium concentrations of respectively -30% and -17% in plasma, -64% and -61% in whole blood, -40% and -33% in erythrocytes. A further decrease of 25% in rubidium plasma concentrations was observed after dialysis. Non dialyzed patients had an increase in plasma concentrations (+14% in males, +23% in females) and a decrease in erythrocyte concentrations (-16% in males, -20% in females) as compared with controls. Our data show that plasma and red cell rubidium concentrations are fairly constant and probably regulated in healthy subjects but vary considerably in patients with renal failure.
mesh_terms: D000328:Adult; D000368:Aged; D004912:Erythrocytes / Q000378:metabolism*; D005260:Female; D006400:Hematocrit; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood*; D008297:Male; D008875:Middle Aged; D010949:Plasma / Q000378:metabolism; D006435:Renal Dialysis; D012413:Rubidium / Q000097:blood*; D013053:Spectrophotometry / Q000379:methods
chemical_list: D012413:Rubidium
vernacular_title: Modifications des concentrations de rubidium plasmatique et globulaire chez les insuffisants rénaux.