Steroid metabolism and excretion in severe anorexia nervosa: effects of refeeding1,

  • Wassif W
  • McLoughlin D
  • Vincent R
 et al. 
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BACKGROUND: To our knowledge, changes in steroid metabolism in subjects with anorexia nervosa (AN) after weight gain have not been elucidated. OBJECTIVE: We characterized urinary steroid excretion and metabolism in AN patients and investigated the effects of refeeding. DESIGN: In an intervention study, we recruited 7 women with life-threatening weight loss upon admission and after a median [interquartile range (IQR)] of 95 d (88-125 d) of intensive refeeding; 15 age-matched women were recruited as control subjects. The major urinary metabolites were quantified in 24-h collections by capillary gas chromatography. A single examiner measured weights, heights, and skinfold thicknesses. RESULTS: The median (IQR) age of patients was 24 y (21-26 y), and the duration of AN was 4.0 y (3.3-8.0 y). Body mass index (BMI; in kg/m(2)) increased from 12.8 (12.7-13.1) to 18.6 (18.0-19.6) after refeeding (P < 0.0001). Steroid values [median pre-, post-refeeding (P value)] were as follows: androgen metabolites [472, 1017 mug/24 h (0.93)], cortisol metabolites [1960, 3912 mug/24 h (0.60)], and ratios of androsterone (5alpha)/etiocholanolone (5beta) [0.28, 0.63 (/=1.00)]. BMI change was positively correlated with 5alpha-/5beta-tetrahydrocortisol (r = 0.95, P < 0.001). Before refeeding, the following metabolites were lower in patients than in control subjects: androsterone, 5alpha-tetrahydrocortisol, alpha-cortolone and alpha-cortol, 5alpha-/5beta-tetrahydrocortisol, androsterone/etiocholanolone, and 20-hydroxy/20-oxocortisol (all P < 0.05). After refeeding, all steroid metabolites in patients were at concentrations that were comparable with those in control subjects. CONCLUSIONS: Significant changes in urine steroid-metabolite excretion occurred upon starvation, which were reversed upon refeeding. For cortisol, there were decreases in 5alpha-/5beta-tetrahydrocortisol and 20-hydroxy-/20-oxometabolites; for androgen, there was a decrease in androsterone/etiocholanolone.

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  • W. S. Wassif

  • D. M. McLoughlin

  • R. P. Vincent

  • S. Conroy

  • G. F. Russell

  • N. F. Taylor

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