Journal
ARCHIVES OF ORAL BIOLOGY
Volume 65, Issue -, Pages 82-86Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.archoralbio.2016.01.019
Keywords
Ameloblast; Enamel epithelium; Ghrelin; Odontoblast; Odontogenesis
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Funding
- National Nature Science Foundation of China [81271965, 81470719, 81311140173]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120131110073]
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Objective: Ghrelin, an appetite-stimulating hormone, plays diverse regulatory functions in cell growth, proliferation, differentiation and apoptosis during mammalian development. There is limited information currently available regarding Ghrelin expression during mammalian tooth development, thus we aimed to establish the spatiotemporal expression of Ghrelin during murine molar odontogenesis. Design: Immunohistochemistry was performed to detect the expression pattern of Ghrelin in mandible molar from E15.5 to PN7 during murine tooth development. Results: The results showed that Ghrelin initially expressed in the inner enamel epithelium and the adjacent mesenchymal cells below, further with persistent expression in the ameloblasts and odontoblasts throughout the following developmental stages. In addition, Ghrelin was also present in Hertwig's epithelial root sheath at the beginning of tooth root formation. Conclusions: These results suggest that Ghrelin was present in tooth organs throughout the stages of tooth development, especially in ameloblasts and odontoblasts with little spatiotemporal expression differences. However, the potential regulatory roles of this hormone in tooth development still need to be validated by functional studies. (C) 2016 Elsevier Ltd. All rights reserved.
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