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Updated: May 16, 2026

An In Ovo Model for Testing Insulin-mimetic Compounds
Published on: April 23, 2018
Amylin exerts osteogenic actions with different efficacy depending on the diabetic status
I Gutiérrez-Rojas1, D Lozano, B Nuche-Berenguer
1Departamento de Metabolismo, Nutrición y Hormonas, Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz, Madrid, Spain.
Abstract:
Amylin displays osteogenic features, but its role in diabetic osteopenia is unclear. We examined the possible osteogenic action of amylin infusion for 3days into fructose-induced insulin-resistant (IR) and streptozotocin-induced type 2 diabetic (T2D) and normal (N) rats. Amylin failed to affect glycaemia or parathyroid hormone levels in any group, but reduced hyperinsulinemia in IR rats. In N rats, amylin increased bone formation rate and reduced osteoclast surface and erosive surface in the femoral metaphysis, and increased osteoprotegerin (OPG)/receptor activator of NFκB ligand (RANKL) mRNA ratio in the tibia. In T2D rats, amylin normalized trabecular structure parameters and increased osteoblast number and osteocalcin (OC) expression in long bones. In contrast, in IR rats, no apparent osteogenic effect of amylin in the femur was observed, although both OC and OPG/RANKL ratio were increased in the tibia. Our findings demonstrate a different osteogenic efficacy of amylin in two diabetic settings.
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