Volume 61, Issue 5, Pages (May 2002)

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Volume 61, Issue 5, Pages 1859-1866 (May 2002) Increased cortisol metabolites and reduced activity of 11β-hydroxysteroid dehydrogenase in patients on hemodialysis  Verena N'Gankam, Dominik Uehlinger, Bernhard Dick, Brigitte M. Frey, Felix J. Frey, M.D.  Kidney International  Volume 61, Issue 5, Pages 1859-1866 (May 2002) DOI: 10.1046/j.1523-1755.2002.00308.x Copyright © 2002 International Society of Nephrology Terms and Conditions

Figure 1 Interconversion of cortisol/cortisone by 11β-hydroxysteroid dehydrogenase (11β-HSD) enzymes and formation of the metabolites tetrahydrocortisone (THE), tetrahydrocortisol (THF) and 5α-tetrahydrocortisol (5α-THF). A reduced activity of 11β-HSD2 induces increased concentration ratios of F/E or (5α-THF+THF)/THE. Kidney International 2002 61, 1859-1866DOI: (10.1046/j.1523-1755.2002.00308.x) Copyright © 2002 International Society of Nephrology Terms and Conditions

Figure 2 Concentrations of conjugated THE (A), THF (B) and 5α-THF (C) in plasma of uremic patients (♦; N = 63) and healthy controls (□; N = 34) as a function of age. The individual values were determined by GC/MS. Blood was obtained from patients in the morning before the start of the dialysis session. Kidney International 2002 61, 1859-1866DOI: (10.1046/j.1523-1755.2002.00308.x) Copyright © 2002 International Society of Nephrology Terms and Conditions

Figure 3 Concentrations of unconjugated cortisol (A) and cortisone (B) in plasma of uremic patients (♦; N = 63) and healthy controls (□; N = 34) as a function of age. The concentration of cortisone was below the detection limit (<500 pg) in 2 patients. Kidney International 2002 61, 1859-1866DOI: (10.1046/j.1523-1755.2002.00308.x) Copyright © 2002 International Society of Nephrology Terms and Conditions

Figure 4 Ratio of cortisol metabolites in plasma of uremic patients (♦; N = 63) and healthy controls (□; N = 34) as a function of age. (A) The ratio 5α-tetrahydrocortisol + tetrahydrocortisol)/tetrahydrocortisone (5α-THF + THF)/THE); (B) the ratio between cortisol (F) and cortisone (E); and (C) the ratio between tetrahydrocortisol (THF) and 5α-tetrahydrocortisol (5α-THF). The ratios of (5α-THF + THF)/THE and F/E are increased in uremic patients (P < 0.0001). Kidney International 2002 61, 1859-1866DOI: (10.1046/j.1523-1755.2002.00308.x) Copyright © 2002 International Society of Nephrology Terms and Conditions

Figure 5 Measured (dots) and predicted (line) mean population concentrations of (A) tetrahydrocortisone (THE), (B) 5α-tetrahydrocortisol (5α-THF) and (C) tetrahydrocortisol (THF) in plasma during dialysis treatment. Time 0 indicates the start of dialysis. Kidney International 2002 61, 1859-1866DOI: (10.1046/j.1523-1755.2002.00308.x) Copyright © 2002 International Society of Nephrology Terms and Conditions