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Updated: Jul 26, 2026
09:07
Analyzing the Functions of Mast Cells In Vivo Using 'Mast Cell Knock-in' Mice
Published on: May 27, 2015
Bone remodeling in W/Wv mast cell deficient mice
R Silberstein1, M Melnick, G Greenberg
1Department of Basic Sciences, University of Southern California, School of Dentistry, Los Angeles 90089-0641.
Bone
|January 1, 1991
Summary
Mast cells are crucial for efficient bone remodeling. Mast cell deficient mice show delayed bone repair and reduced bone formation, indicating their role in regulating bone turnover.
Area of Science:
- Bone Biology
- Immunology
- Skeletal Homeostasis
Background:
- Mast cells are implicated in bone disease.
- The precise role of mast cells in bone remodeling remains unclear.
Purpose of the Study:
- To investigate the function of mast cells in regulating bone remodeling.
- To determine the impact of mast cell deficiency on the bone remodeling cycle.
Main Methods:
- Utilized mast cell deficient (W/Wv) and sufficient (+/+) mice.
- Induced bone remodeling via a tooth egression protocol.
- Performed quantitative histomorphometry to analyze bone remodeling phases.
Main Results:
- Mast cell deficient mice exhibited delayed onset of bone remodeling.
- Reduced duration and extent of the bone formation phase observed.
- Diminished new bone matrix synthesis in mast cell deficient mice.
Conclusions:
- Mast cells and their mediators play a paracrine role in bone remodeling.
- They influence osteoclast and osteoblast progenitor recruitment and activity.
- Bone remodeling occurs in mast cell deficient mice, suggesting redundant mechanisms for skeletal homeostasis.
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