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The effect of diphenylhydantoin on fibroblasts in vitro
Abstract:
It was found that 0.02 mM was the higher concentration of drug which is not toxic and is compatible with normal cell morphology and growth over a period of a week. Using this concentration of drug there was no consistent stimulation of cell growth. A small increase in cell number was noted, however, in some cultures during the first 24 hours of culture. DpH at a concentration of 0.02 mM in the presence of ascorbic acid decreased collagen prolyl hydroxylation in "old" W1-38 cultures but a concentration of 0.1 mM was required to decrease the values to a similar extent in "young" cultures. A concentration of 0.02 mM DpH had no effect on hydroxylation in an "old" HGF culture. It is speculated that in a responsive individual a reduction of collagen prolyl hydroxylation may play a role in the etiology of DpH-induced gingival enlargement and congenital malformations.
Insights
The drug DpH at 0.02 mM is non-toxic and supports cell growth. It decreases collagen prolyl hydroxylation in older cells, but requires higher concentrations for younger cells, suggesting a role in certain developmental conditions.
Area of Science:
- Biochemistry
- Cell Biology
- Pharmacology
Background:
- Collagen prolyl hydroxylation is crucial for connective tissue integrity.
- Drug-induced gingival enlargement and congenital malformations are significant clinical concerns.
- Understanding the cellular effects of compounds like DpH is essential for therapeutic development.
Purpose of the Study:
- To determine the non-toxic concentration of DpH for cell culture.
- To investigate the effect of DpH on collagen prolyl hydroxylation in different cell types and ages.
- To explore the potential role of altered collagen hydroxylation in DpH-related adverse effects.
Main Methods:
- Cell culture of W1-38 and human gingival fibroblast (HGF) cells at different ages.
- Treatment with varying concentrations of DpH (0.02 mM and 0.1 mM) in the presence of ascorbic acid.
- Assessment of cell morphology, growth, and collagen prolyl hydroxylation levels.
Main Results:
- 0.02 mM DpH was found to be non-toxic, maintaining normal cell morphology and growth for a week.
- This concentration did not consistently stimulate cell growth, though a minor increase was observed in some cultures within 24 hours.
- DpH at 0.02 mM decreased collagen prolyl hydroxylation in "old" W1-38 cells, while 0.1 mM was needed for "young" W1-38 cells. No effect was observed in "old" HGF cells.
Conclusions:
- The non-toxic concentration of DpH (0.02 mM) does not significantly promote cell proliferation.
- DpH affects collagen prolyl hydroxylation in a dose- and age-dependent manner in W1-38 cells, with varying effects on different cell types.
- Reduced collagen prolyl hydroxylation may contribute to the development of DpH-induced gingival enlargement and congenital malformations in susceptible individuals.