Factors affecting bovine corneal endothelial cell density in vitro
| Autor: | E W Johnstone, Keryn A. Williams, H C Wong, D. J. Coster |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
medicine.medical_treatment
Basic fibroblast growth factor Cell Cell Count Biology Cellular and Molecular Neuroscience chemistry.chemical_compound Epidermal growth factor medicine Animals Growth Substances Receptor Cells Cultured Cell growth Growth factor Endothelium Corneal Contact inhibition Molecular biology Sensory Systems Endothelial stem cell Ophthalmology medicine.anatomical_structure Biochemistry chemistry Cattle Research Article |
| Zdroj: | British Journal of Ophthalmology. 80:256-262 |
| ISSN: | 0007-1161 |
| DOI: | 10.1136/bjo.80.3.256 |
| Popis: | AIMS: To examine factors influencing the density and contact inhibition of bovine corneal endothelial cells cultured in vitro. METHODS: Cell counts were performed on bovine corneal endothelial cells cultured for various times in the presence of 10% fetal calf serum, with or without varying concentrations of growth factors, 5% dextran T-500, or 2% chondroitin sulphate, at 32 degrees C or 37 degrees C, and after treatment with beta galactosidase. RESULTS: Both basic fibroblast growth factor (FGFb) and retinal crude extract (RCE), but neither epidermal growth factor (EGF) nor acidic fibroblast growth factor (FGFa), increased endothelial cell density in vitro (p < 0.05). Continuous exposure to RCE resulted in a higher cell density than did a 24 hour pulse (p < 0.01), and higher cell densities were achieved at 37 degrees C than at 32 degrees C (p < 0.0001). In the absence of RCE, dextran T-500 increased cell density modestly (p < 0.05); in the presence of RCE, the addition of dextran T-500 had no effect on final cell density, whereas chondroitin sulphate significantly decreased final cell density (p < 0.01). In the absence of exogenous growth factors, beta galactosidase treatment resulted in a 50% increase in final cell density compared with controls (p < 0.0001). CONCLUSIONS: Bovine corneal endothelial cell growth can be augmented under conditions different from those used in corneal preservation systems. The final cell density in a confluent monolayer can be increased by treatment with beta galactosidase, suggesting that corneal endothelial cells may be contact inhibited through a beta galactosidase sensitive receptor system. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|