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Osteoclast Derivation from Mouse Bone Marrow
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Sexual Dimorphism in Osteoclasts.

Joseph Lorenzo1

  • 1UConn Health, 263 Farmington Avenue, Farmington, CT 06030, USA.

Cells
|September 16, 2020
PubMed
Summary
This summary is machine-generated.

Sexual dimorphism influences bone mass, with females generally having lower bone mass than males. This review explores factors affecting osteoclast activity and skeletal differences between sexes.

Keywords:
geneticsinflammationosteoclastssex steroidssexual dimorphism

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Area of Science:

  • Bone Biology
  • Endocrinology
  • Skeletal Physiology

Background:

  • Osteoclasts are key cells in bone resorption, developing from precursor cells influenced by M-CSF and RANKL.
  • Sexual dimorphism in skeletal development and disease incidence is evident, with females typically exhibiting lower bone mass.
  • Factors like sex steroids, genetics, age, and environment contribute to skeletal differences and osteoclast activity variations between males and females.

Purpose of the Study:

  • To review the current understanding of factors contributing to sexual dimorphism in the skeleton.
  • To explore how these factors influence osteoclast formation, activity, and survival.
  • To elucidate the mechanisms behind sex-based differences in bone mass and skeletal disease incidence.

Main Methods:

  • Literature review of existing research on osteoclast biology and sexual dimorphism.
  • Analysis of studies investigating the roles of cytokines (M-CSF, RANKL) and sex steroids.
  • Synthesis of data on genetic, environmental, and behavioral influences on bone metabolism.

Main Results:

  • Multiple factors, including sex steroids, genetics, age, and environment, differentially affect osteoclast activity in males and females.
  • These factors contribute to the observed sexual dimorphism in bone mass and the incidence of skeletal diseases.
  • Specific molecular and cellular mechanisms underlying these sex-based differences are complex and multifactorial.

Conclusions:

  • Sexual dimorphism in skeletal health is significantly influenced by sex-specific regulation of osteoclast biology.
  • Understanding these differences is crucial for addressing sex-biased skeletal diseases.
  • Further research is needed to fully elucidate the intricate interplay of factors governing sex differences in bone metabolism.