BACKGROUND: Osteopenia and osteoporosis are among the most frequent and severe complications in adolescents with anorexia nervosa. OBJECTIVE: The aim of this study was to assess the influence of nutritional therapy on bone metabolism during adolescent anorexia nervosa. DESIGN: We studied 19 anorectic patients aged 14.1 +/- 1.4 y (x +/- SD) with a body mass index (BMI; in kg/m(2)) of 14.2 +/- 1.4 and 19 age-matched control subjects aged 15.1 +/- 2.3 y with a BMI of 20.8 +/- 1.9 for 1 y. Blood samples were taken for the measurement of bone markers, insulin-like growth factor I (IGF-I), and leptin. RESULTS: BMI rose significantly from 14.2 +/- 1.4 at baseline to 17.4 +/- 0.6 (P < 0.0001) at week 15. Compared with concentrations in the control subjects, concentrations of the bone formation markers procollagen type I propeptide (PICP) and bone alkaline phosphatase (bAP) in the anorectic patients were lower at baseline (PICP: P = 0.0071; bAP: P = 0.0012), increased with nutritional therapy (PICP: P = 0.0060, bAP: P = 0.0147), and were no longer significantly different (P > 0.05) during the follow-up period. Concentrations of IGF-I and leptin were significantly lower (P < 0.0001 for both) in the anorectic patients than in the control subjects at baseline. IGF-I increased with nutritional therapy but was still significantly lower (P = 0.0036) than that in the control group and decreased again during the follow-up period (P = 0.0126). In contrast, serum C-telopeptide decreased with nutritional therapy (P = 0.0446). CONCLUSION: Nutritional therapy improves concentrations of bone formation markers in adolescent patients with anorexia nervosa.
BACKGROUND:Osteopenia and osteoporosis are among the most frequent and severe complications in adolescents with anorexia nervosa. OBJECTIVE: The aim of this study was to assess the influence of nutritional therapy on bone metabolism during adolescent anorexia nervosa. DESIGN: We studied 19 anorectic patients aged 14.1 +/- 1.4 y (x +/- SD) with a body mass index (BMI; in kg/m(2)) of 14.2 +/- 1.4 and 19 age-matched control subjects aged 15.1 +/- 2.3 y with a BMI of 20.8 +/- 1.9 for 1 y. Blood samples were taken for the measurement of bone markers, insulin-like growth factor I (IGF-I), and leptin. RESULTS: BMI rose significantly from 14.2 +/- 1.4 at baseline to 17.4 +/- 0.6 (P < 0.0001) at week 15. Compared with concentrations in the control subjects, concentrations of the bone formation markers procollagen type I propeptide (PICP) and bone alkaline phosphatase (bAP) in the anorectic patients were lower at baseline (PICP: P = 0.0071; bAP: P = 0.0012), increased with nutritional therapy (PICP: P = 0.0060, bAP: P = 0.0147), and were no longer significantly different (P > 0.05) during the follow-up period. Concentrations of IGF-I and leptin were significantly lower (P < 0.0001 for both) in the anorectic patients than in the control subjects at baseline. IGF-I increased with nutritional therapy but was still significantly lower (P = 0.0036) than that in the control group and decreased again during the follow-up period (P = 0.0126). In contrast, serum C-telopeptide decreased with nutritional therapy (P = 0.0446). CONCLUSION: Nutritional therapy improves concentrations of bone formation markers in adolescent patients with anorexia nervosa.
Authors: Gaele Ducher; Anne I Turner; Sonja Kukuljan; Kathleen J Pantano; Jennifer L Carlson; Nancy I Williams; Mary Jane De Souza Journal: Sports Med Date: 2011-07-01 Impact factor: 11.136
Authors: Kylie E Whitten; Steven T Leach; Timothy D Bohane; Helen J Woodhead; Andrew S Day Journal: J Gastroenterol Date: 2009-12-03 Impact factor: 7.527
Authors: B Galusca; C Bossu; N Germain; M Kadem; D Frere; M H Lafage-Proust; F Lang; B Estour Journal: Osteoporos Int Date: 2006-03-16 Impact factor: 4.507