Sonic Hedgehog Regulates Bone Fracture Healing

Bone fracture healing involves the combination of intramembranous and endochondral ossification. It is known that Indian hedgehog (Ihh) promotes chondrogenesis during fracture healing. Meanwhile, Sonic hedgehog (Shh), which is involved in ontogeny, has been reported to be involved in fracture healin...

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Veröffentlicht in:International journal of molecular sciences 2020-01, Vol.21 (2), p.677
Hauptverfasser: Takebe, Hiroaki, Shalehin, Nazmus, Hosoya, Akihiro, Shimo, Tsuyoshi, Irie, Kazuharu
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creator Takebe, Hiroaki
Shalehin, Nazmus
Hosoya, Akihiro
Shimo, Tsuyoshi
Irie, Kazuharu
description Bone fracture healing involves the combination of intramembranous and endochondral ossification. It is known that Indian hedgehog (Ihh) promotes chondrogenesis during fracture healing. Meanwhile, Sonic hedgehog (Shh), which is involved in ontogeny, has been reported to be involved in fracture healing, but the details had not been clarified. In this study, we demonstrated that Shh participated in fracture healing. Six-week-old Sprague-Dawley rats and Gli-CreER ; tdTomato mice were used in this study. The right rib bones of experimental animals were fractured. The localization of Shh and Gli1 during fracture healing was examined. The localization of Gli1 progeny cells and osterix (Osx)-positive cells was similar during fracture healing. Runt-related transcription factor 2 (Runx2) and Osx, both of which are osteoblast markers, were observed on the surface of the new bone matrix and chondrocytes on day seven after fracture. Shh and Gli1 were co-localized with Runx2 and Osx. These findings suggest that Shh is involved in intramembranous and endochondral ossification during fracture healing.
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source MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central
subjects Biomedical materials
Bone healing
Bone marrow
Bone matrix
Cartilage
Cbfa-1 protein
Chondrocytes
Chondrogenesis
Communication
Endochondral bone
Fractures
Healing
Hedgehog protein
Hematoma
Homeostasis
Localization
Ontogeny
Ossification
Progeny
Proteins
title Sonic Hedgehog Regulates Bone Fracture Healing
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