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Initial characterization of cells derived from human periodontia
J E Piche1, D L Carnes, D T Graves
1Department of Periodontics, Wilford Hall Medical Center, U.S. Air Force, San Antonio, Texas 78236.
Journal of Dental Research
|May 1, 1989
Summary
Researchers characterized human periodontal cells, identifying distinct osteoblast-like cells from alveolar bone and ligament, and fibroblast-like cells from gingiva and ligament. These findings aid in understanding periodontal tissue regeneration.
Area of Science:
- Cell Biology
- Periodontal Research
- Tissue Engineering
Background:
- Human periodontium comprises diverse cell types crucial for tissue homeostasis.
- Understanding these cell types is vital for regenerative medicine and periodontics.
Purpose of the Study:
- To characterize cell populations derived from human periodontal tissues.
- To differentiate cell types based on morphology, biochemistry, and proliferation.
Main Methods:
- Explants and monolayer cultures established from human periodontal ligament, gingival tissue, and alveolar bone.
- Cells characterized at passage numbers 2-4 using morphological, biochemical, and proliferative assays.
Main Results:
- Osteoblast-like cells (from alveolar bone and ligament) showed increased PTH-stimulated cAMP and high alkaline phosphatase activity.
- Fibroblast-like cells (from gingiva and ligament) exhibited low basal alkaline phosphatase and modulated proliferation with PDGF.
- Morphological differences observed at confluence: multilayered (bone/ligament) vs. monolayer (gingiva/ligament).
Conclusions:
- Distinct cell populations with osteoblast-like and fibroblast-like phenotypes were identified within human periodontium.
- These characterized cells provide a basis for further studies in periodontal regeneration and disease.