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Effects of prenatal malnutrition on development of oral tissue in neonatal rats
Insights
Prenatal malnutrition in rats impacts offspring tooth and tongue development. Malnourished newborns showed fewer and smaller cells in tooth germs and altered tongue cell structures, highlighting the importance of maternal nutrition.
Area of Science:
- Developmental Biology
- Nutritional Science
- Oral Biology
Background:
- Prenatal nutrition significantly influences offspring development.
- Malnutrition during gestation can have lasting effects on organogenesis.
- Understanding these effects is crucial for public health and preventative strategies.
Purpose of the Study:
- To investigate the impact of prenatal malnutrition on the development of incisor and molar tooth germs and the tongue in newborn rats.
- To compare cellularity and morphology in tooth germs and tongue between malnourished and well-nourished groups.
- To assess biochemical markers of development in affected tissues.
Main Methods:
- Newborn rats from malnourished and well-nourished mothers were compared.
- Cell counts and size were analyzed in incisor and molar tooth germs and tongue tissues.
- 45Ca uptake and alkaline/acid phosphatase activities were measured.
Main Results:
- Malnourished offspring exhibited reduced cell numbers and smaller cell sizes in molar tooth germs.
- Incisor tooth germs showed fewer cells in malnourished offspring.
- Tongue tissues had fewer but larger cells in malnourished newborns.
- Biochemical analyses indicated differential effects of malnutrition on incisor and molar tooth germs.
- Alkaline phosphatase activity in the tongue was not significantly different between groups.
Conclusions:
- Prenatal malnutrition adversely affects the cellular development of tooth germs and tongue in rats.
- Incisor and molar tooth germs are affected differently by prenatal nutritional deficiencies.
- Adequate protein intake during pregnancy is essential for healthy fetal tooth and tongue development.
Abstract:
The effects of prenatal malnutrition on the growth of incisor and molar tooth germs and tongue were investigated in newborn rats. Compared with the results on the young of well-nourished mothers, the young of the malnourished animals had fewer and smaller cells in the molar tooth germs and fewer cells in incisor tooth germs. The tongue of the malnourished animals had fewer but larger cells. 45Ca uptake studies and alkaline and acid phosphatase activities suggested that prenatal malnutrition affected incisor and molar tooth germs in different ways. Alkaline phosphatase activity in the tongue did not differ between dietary groups. The results indicate that an adequate protein intake is extremely important for the healthy development of the teeth and tongue of the offspring.