Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2144803 | Matrix Biology | 2014 | 14 Pages |
Abstract
The absence of SP and SNF reduces pain sensitivity and mechanical stability of the bone in general. The micro-architecture of the bone is profoundly impaired in the absence of intact SNF with a less drastic effect in SP-deficient mice. Both sympathetic and sensory neurotransmitters are indispensable for proper callus differentiation. Importantly, the absence of SP reduces bone formation rate whereas the absence of SNF induces bone resorption rate. Notably, fracture chondrocytes produce SP and its receptor NK1 and are positive for α-adrenoceptors indicating an endogenous callus signaling loop. We propose that sensory and sympathetic neurotransmitters have crucial trophic effects which are essential for proper bone formation in addition to their classical neurological actions.
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Authors
Tanja Niedermair, Volker Kuhn, Fatemeh Doranehgard, Richard Stange, Britta Wieskötter, Johannes Beckmann, Philipp Salmen, Hans-Robert Springorum, Rainer H. Straub, Andreas Zimmer, Joachim Grifka, Susanne Grässel,