SENSORY NEUROTRANSMITTERS SUBSTANCE P AND Α-CALCITONIN GENE-RELATED PEPTIDE MODULATE BONE CELL METABOLISM
2018
Previously, we have demonstrated reduced biomechanical bone strength and matrix quality in Tachykinin (Tac)1-deficient mice lacking the sensory neuropeptide substance P (SP). A similar distortion of bone microarchitecture was described for α-calcitonin gene-related pepide (α-CGRP)-deficient mice. In previous studies we observed alterations in cell survival and differentiation capacity of bone cells isolated from wildtype mice when stimulated with SP and α-CGRP. We assume that changes in sensory neurotransmitter balance modulate bone cell metabolism thereby possibly contributing to inferior bone quality. In order to explore this hypothesis, we investigated and compared metabolic parameters in osteoblasts and osteoclasts isolated from SP- and α-CGRP-deficient mice and wildtype (WT) controls. Bone marrow-derived macrophages (BMMs) and osteoblast-like cells from female C57Bl/6J (WT-control), Tac1-deficient (Tac1-/−) and α-CGRP-deficient (α-CGRP-/−) mice were isolated and differentiated according to establishe...
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