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Type X collagen in human enamel development: a possible role in mineralization
S Felszeghy1, K Holló, L Módis
1Department of Anatomy, Histology and Embryology, University of Debrecen Medical and Health Science Center, Hungary. szabi@chondron.anat.dote.hu
Acta Odontologica Scandinavica
|October 25, 2000
Summary
Type X collagen, a key molecule in bone formation, is present in developing human tooth enamel during maturation. This finding suggests its potential role in enamel mineralization.
Area of Science:
- Biochemistry
- Developmental Biology
- Oral Biology
Background:
- Type X collagen is crucial for endochondral ossification.
- Its presence in dental structures during mineralization is unknown.
Purpose of the Study:
- To investigate the presence and localization of type X collagen in human tooth germs during development.
- To explore the potential role of type X collagen in enamel mineralization.
Main Methods:
- Immunohistochemistry on human tooth germ samples (17-week fetus to 9-week newborn).
- Enzyme-Linked Immunosorbent Assay (ELISA) on enamel and cartilage extracts.
- Western blotting of enamel extracts.
Main Results:
- Type X collagen was detected in human tooth germ during enamel maturation.
- Intense staining observed in enamel and secretory ameloblasts at the bell stage.
- Staining diminished in postnatal stages; odontoblasts, dentine, and pulp were negative.
- ELISA and Western blot confirmed type X collagen presence and size in enamel.
Conclusions:
- Type X collagen is present in human tooth enamel during maturation.
- It is localized in the enamel matrix and secretory ameloblasts.
- Type X collagen is a candidate molecule involved in enamel mineralization.