Adaptive bone formation in acellular vertebrae of sea bass (Dicentrarchus labrax L.).

摘要: Mammalian bone is an active tissue in which osteoblasts and osteoclasts balance mass. This process of adaptive modelling remodelling probably regulated by strain-sensing osteocytes. Bone advanced teleosts acellular yet, despite the lack osteocytes, it capable response to physical stimuli. Strenuous exercise known induce lordosis. Lordosis a ventrad curvature vertebral column, affected vertebrae show increase formation. The effects lordosis on strain distribution sea bass (Dicentrarchus labrax L.) are assessed using finite element modelling. local analyzed spatially ontogenetically terms volume. Lordotic significantly increased energy due load compared with normal when loaded compression. High regions found centrum parasagittal ridges. attenuated change architecture formation seen mainly at articular surfaces vertebrae, although some extra formed centrum. Regions highest strains do not correlate most extensive apposition occurs lordotic bass. Mammalian-like strain-regulated guiding mechanism vertebrae. Chondroidal ossification where mediates rapid response, potentially attenuating high stresses dorsal zygapophyses.