Neutral steroid metabolites in patients with uraemia and after renal transplantation: a quantitative and qualitative study in body fluids

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Abstract
Steroid metabolites enriched from urine, haemofiltrate, and CAPD‐dialysate (Continous Ambulatory Peritoneal Dialysis) were identified by gas chromatography‐mass spectrometry and quantified by capillary gas chromatography. The study included twenty healthy controls, twenty‐six non‐dialysed urae‐mics, thirty‐nine patients on regular dialysis treatment, and twenty‐two allograft recipients. Compared to the 24 h urinary excretion rates of controls the excretion rates of androsterone and etiocholanolone were in the lower normal range up to significantly decreased in the body fluids of all patients, and those of the corticoid metabolites were also significantly decreased. 11‐Oxygenated androstano‐lones in urine from non‐dialysed uraemics correlated significantly decreased. 11‐oxygenated androstano‐levels and were significantly increased, but normal in haemofiltrate and CAPD‐dialysate, while in urine of allograft recipients the values were significantly lower.