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[Growth factors in human tooth development].

C Bellone1, T Barni, L Pagni

  • 1Dipartimento di Anatomia umana e Istologia, Università di Firenze.

Bollettino Della Societa Italiana Di Biologia Sperimentale
|March 1, 1990
PubMed
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Epidermal growth factor (EGF) and insulin-like growth factor I (IGF-I) receptors are present during human tooth development. These growth factors may influence cell proliferation, differentiation, and epithelial-mesenchymal interactions in tooth morphogenesis.

Area of Science:

  • Developmental Biology
  • Cell Biology
  • Histology

Background:

  • Tooth development involves complex signaling pathways.
  • Epithelial-mesenchymal interactions are crucial for morphogenesis.
  • Growth factors like EGF and IGF-I are implicated in developmental processes.

Purpose of the Study:

  • To investigate the localization of EGF and IGF-I receptors during human tooth germ development.
  • To understand the potential roles of EGF and IGF-I in tooth morphogenesis.

Main Methods:

  • Immunohistochemical localization using monoclonal antibodies.
  • Analysis of receptor distribution at different stages of tooth germ development (bud, cap, bell stages).

Main Results:

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  • EGF and IGF-I receptors are detected in the tooth germ from early developmental phases.
  • Receptor localization varies across epithelial and mesenchymal cells during bud, cap, and bell stages.
  • Receptors are present in dental laminae, enamel epithelium, stellate reticulum, dental papilla, and follicle cells.

Conclusions:

  • EGF and IGF-I receptors are present during human tooth morphogenesis.
  • EGF and IGF-I may act as growth factors modulating cellular proliferation and differentiation.
  • These factors might play a role in mesenchymal-epithelial interactions during tooth development.