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Prilocaine induces apoptosis in osteoblastic cells
K Nakamura1, H Kido, Y Morimoto
1First Department of Oral Anatomy, Kyushu Dental College, Japan.
Summary
Prilocaine, a local anesthetic, triggers apoptosis in osteoblastic cells. This cell death involves DNA fragmentation and is dose-dependent, indicating potential effects on bone cell health.
Area of Science:
- Cell Biology
- Pharmacology
- Biochemistry
Background:
- Osteoblastic cells are crucial for bone formation and maintenance.
- Local anesthetics like prilocaine are widely used in medical procedures.
- Understanding the cellular effects of anesthetics on bone cells is important for patient safety.
Purpose of the Study:
- To investigate whether prilocaine induces apoptosis in osteoblastic cells.
- To characterize the dose- and time-dependent effects of prilocaine on osteoblast viability.
- To explore the mechanisms underlying prilocaine-induced cell death.
Main Methods:
- Osteoblastic cell lines (Saos-2, MG63, MC3T3-E1) were exposed to varying concentrations of prilocaine.
- Cytotoxicity was assessed using phase-contrast microscopy and WST-1 assay.
- Apoptosis was confirmed by Hoechst staining for nuclear fragmentation and DNA ladder formation analysis.
Main Results:
- Prilocaine induced dose- and time-dependent cell death in osteoblastic cells.
- Morphological analysis revealed nuclear condensation and chromatin fragmentation.
- DNA ladder formation, a hallmark of apoptosis, was observed in prilocaine-treated cells.
- Cycloheximide partially inhibited prilocaine-induced apoptosis, suggesting a role for protein synthesis.
Conclusions:
- Prilocaine induces apoptosis in osteoblastic cells, evidenced by morphological and biochemical markers.
- The apoptotic process appears to involve transcriptional regulation and protein synthesis.
- These findings highlight potential risks of prilocaine exposure to bone cells.