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Dentin Sialophosphoprotein Expression Profile in Developing Human Primary Teeth: An Experimental Study
Soussan Irani1, Shohreh Alimohammadi2, Fatemeh Ataei3
1Dept. of Oral Pathology, Dental Research Centre, Dental Faculty, Hamadan University of Medical Sciences, Hamadan, Iran. Lecturer at Griffith University, Gold Coast, Australia.
Dentin sialophosphoprotein (DSPP) expression increases during human primary tooth development. This finding suggests DSPP plays a role in the cellular interactions essential for tooth formation.
Area of Science:
- Developmental biology
- Biochemistry
- Oral biology
Background:
- Tooth development involves complex cellular signaling.
- Dentin sialophosphoprotein (DSPP) is a key dentin matrix protein, but its role in tooth development is unclear.
- DSPP is found in dentin, cementum, and bone.
Purpose of the Study:
- To investigate the expression profile of DSPP during human primary tooth development.
- To analyze DSPP expression across different developmental stages using a substantial sample size.
Main Methods:
- Utilized immunohistochemistry (IHC) on 33 human fetal samples.
- Samples were categorized into three gestational age groups (<16, <19, and ≥19 weeks).
- Statistical analysis employed a two-way ANOVA (p<0.05).
Main Results:
- DSPP expression demonstrated a progressive increase with advancing gestational age.
- This upregulation was observed across various histological structures within developing primary teeth.
Conclusions:
- Increased DSPP expression correlates with gestational progression in primary tooth development.
- These findings support the hypothesis that DSPP is involved in the reciprocal interactions between enamel organ and dental pulp cells during tooth formation.
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