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Review
. 2023 Feb 27;24(5):4599.
doi: 10.3390/ijms24054599.

Molecular Basis beyond Interrelated Bone Resorption/Regeneration in Periodontal Diseases: A Concise Review

Khadiga M Sadek  1   2 , Sara El Moshy  2   3 , Israa Ahmed Radwan  2   3 , Dina Rady  2   3 , Marwa M S Abbass  2   3 , Aiah A El-Rashidy  1   2 , Christof E Dörfer  4 , Karim M Fawzy El-Sayed  2   4   5
Affiliations
Review

Molecular Basis beyond Interrelated Bone Resorption/Regeneration in Periodontal Diseases: A Concise Review

Khadiga M Sadek et al. Int J Mol Sci. .

Abstract

Periodontitis is the sixth most common chronic inflammatory disease, destroying the tissues supporting the teeth. There are three distinct stages in periodontitis: infection, inflammation, and tissue destruction, where each stage has its own characteristics and hence its line of treatment. Illuminating the underlying mechanisms of alveolar bone loss is vital in the treatment of periodontitis to allow for subsequent reconstruction of the periodontium. Bone cells, including osteoclasts, osteoblasts, and bone marrow stromal cells, classically were thought to control bone destruction in periodontitis. Lately, osteocytes were found to assist in inflammation-related bone remodeling besides being able to initiate physiological bone remodeling. Furthermore, mesenchymal stem cells (MSCs) either transplanted or homed exhibit highly immunosuppressive properties, such as preventing monocytes/hematopoietic precursor differentiation and downregulating excessive release of inflammatory cytokines. In the early stages of bone regeneration, an acute inflammatory response is critical for the recruitment of MSCs, controlling their migration, and their differentiation. Later during bone remodeling, the interaction and balance between proinflammatory and anti-inflammatory cytokines could regulate MSC properties, resulting in either bone formation or bone resorption. This narrative review elaborates on the important interactions between inflammatory stimuli during periodontal diseases, bone cells, MSCs, and subsequent bone regeneration or bone resorption. Understanding these concepts will open up new possibilities for promoting bone regeneration and hindering bone loss caused by periodontal diseases.

Keywords: bone regeneration; bone resorption; inflammation; mesenchymal stem cell; osteocytes.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The role of inflammatory cells in periodontal tissue destruction.
Figure 2
Figure 2
Schematic diagram representing osteoclast differentiation in periodontal diseases.
See this image and copyright information in PMC

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