hrp0092fc14.3 | GH and IGF3 | ESPE2019

PAPP-A2 Deficiency Induces Sex-Specific Changes in Hydroxyapatite-(CaOH) Crystallinity and the Effects of IGF-1 on Bone Composition in Adult Mice

Vargas Antonio , Rubio Leticia , Rivera Patricia , Christians Julian , de Fonseca Fernando Rodríguez , Chowen Julie , Suárez Juan , Argente Jesús

Deficiency of pregnancy-associated plasma protein-A2 (PAPP-A2), a regulator of IGF-1 availability, causes postnatal growth failure in humans and mice, at least in part through dysregulation of bone size and density. The present study aimed to determine the effects of Pappa2 gene deletion and the response to recombinant murine IGF-1 (rmIGF-1) on femur microstructure and composition. Hydroxyapatite-related crystallography and ionic substitutions were analyzed by X-ray p...