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Войти в исследования Growth dynamics of transversal body dimensions and proportions, with related clinical determinants in children with X-linked hypophosphatemia treated with phosphate supplements and active vitamin D.
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Brieger Laura Celine, Przygodda Stephan, Bohlen Alina Verena, Rehberg Mirko, Konrad Martin, Schlingmann Karl Peter, Hiort Olaf, Schmidt Dorothee, John-Kroegel Ulrike, Wuehl Elke, Kemper Markus Josef, Derichs Ute, Patzer Ludwig, Albers Norbert, Dunstheimer Desiree, Heger Sabine, Grohmann-Held Karina, Schroeder Carmen, Jorch Norbert, Schmid Elmar, Staude Hagen, Weitz Marcus, Freiberg Clemens, Huebner Angela, Heitmeyer-Pyper Anke, Sparta Giuseppina, Partsch Carl-Joachim, Marx Michaela, Land Christof, Baus Inka, Wilkening Frauke, Moeller Kristina, Simic-Schleicher Gunter, Empting Susann, Metzing Oliver, Wagner Verena, Holder Martin, Žebec Mislav Stjepan, Schnabel Dirk, Haffner Dieter, Zivicnjak Miroslav, on behalf of, German Society for Pediatric Nephrology (GPN), German Society for Pediatric, Adolescent Endocrinology, Diabetology (DGKED)
Аннотация
METHODS: Six major transverse body dimensions of the trunk and extremities, and the frame index (FI), i.e., ratio between bicondylar humerus diameter and height, were measured annually along with clinical characteristics in 109 pediatric patients with XLH, all on supplementation therapy, participating in a prospective multicenter observational study conducted since 1998. Associations between anthropometric and clinical parameters were investigated using linear mixed-effects models.
RESULTS: Children with XLH exhibited persistent hypophosphatemia and elevated alkaline phosphatase z scores despite supplementation treatment. This was associated with disproportionate transversal skeletal growth, which was most pronounced during adolescence (13-17 years). Bicondylar diameter z scores (tubular bone width) and FI progressively increased with age (each p < 0.05). In addition, FI was identified as a superior indicator of stunting when compared to other measures of transversal dimensionality across all age groups. In young children (2-6 years), transversal growth was most synchronized and associated most strongly with clinical characteristics.
CONCLUSIONS: Our data show disproportionate growth in transversal body dimensions despite supplementation treatment in children with XLH, suggesting compensatory widening of tubular bones as adaptation for mineral loss caused by persisting rickets. The FI can be used as a general indicator of bone health in children with XLH in clinical practice and trials.