Related Experiment Video
Updated: Mar 22, 2026
Isolation of Mesenchymal Stem Cells from Human Alveolar Periosteum and Effects of Vitamin D on Osteogenic Activity of Periosteum-derived Cells
Published on: May 4, 2018
Mesenchymal stem cell proliferation and mineralization but not osteogenic differentiation are strongly affected by
Riham Fliefel1, Cvetan Popov2, Matthias Tröltzsch3
1Experimental Surgery and Regenerative Medicine, Ludwig-Maximilians-University, Munich, Germany; Department of Oral and Maxillofacial Surgery, Ludwig-Maximilians-University, Munich, Germany; Department of Oral and Maxillofacial Surgery, Alexandria-University, Alexandria, Egypt.
Unlabelled:
Osteomyelitis is a serious complication in oral and maxillofacial surgery affecting bone healing. Bone remodeling is not only controlled by cellular components but also by ionic and molecular composition of the extracellular fluids in which calcium phosphate salts are precipitated in a pH dependent manner.
Objective:
To determine the effect of pH on self-renewal, osteogenic differentiation and matrix mineralization of mesenchymal stem cells (MSCs).
Methods:
We selected three different pH values; acidic (6.3, 6.7), physiological (7.0-8.0) and severe alkaline (8.5). MSCs were cultured at different pH ranges, cell viability measured by WST-1, apoptosis detected by JC-1, senescence was analyzed by β-galactosidase whereas mineralization was detected by Alizarin Red and osteogenic differentiation analyzed by Real-time PCR.
Results:
Self-renewal was affected by pH as well as matrix mineralization in which pH other than physiologic inhibited the deposition of extracellular matrix but did not affect MSCs differentiation as osteoblast markers were upregulated. The expression of osteocalcin and alkaline phosphatase activity was upregulated whereas osteopontin was downregulated under acidic pH.
Conclusion:
pH affected MSCs self-renewal and mineralization without influencing osteogenic differentiation. Thus, future therapies, based on shifting acid-base balance toward the alkaline direction might be beneficial for prevention or treatment of osteomyelitis.
