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Related Experiment Videos

Sex steroids and bone: current perspectives.

Juan Balasch1

  • 1Institut Clínic of Gynecology, Obstetrics and Neonatology, Faculty of Medicine-University of Barcelona, Hospital Clínic-Institut d'lnvestigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain. jbalasch@medicina.ub.es

Human Reproduction Update
|July 16, 2003
PubMed
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Ovarian steroids are crucial for bone health, influencing skeletal homeostasis through direct and indirect mechanisms. Understanding these roles is key for preventing and treating osteoporosis, especially in women.

Area of Science:

  • Endocrinology
  • Bone Biology
  • Reproductive Health

Background:

  • Ovarian steroids, including estrogens, androgens, and progesterone, are essential for maintaining skeletal homeostasis.
  • Mechanisms involve indirect effects on calcium balance and direct receptor-mediated actions, with recent focus on cytokine production and osteoblastic cell apoptosis.
  • Factors like menopause, reproductive history, and lifestyle significantly impact bone mass and osteoporosis risk in women.

Purpose of the Study:

  • To elucidate the role of ovarian steroids in skeletal homeostasis and bone remodeling.
  • To identify reproductive and lifestyle factors influencing bone health and osteoporosis risk.
  • To explore future therapeutic strategies for osteoporosis, including novel hormone-based agents.

Main Methods:

Related Experiment Videos

  • Review of existing literature on sex steroid action on bone.
  • Analysis of reproductive factors associated with osteopenia and bone mass preservation.
  • Discussion of emerging cellular and molecular mechanisms of sex steroid influence.

Main Results:

  • Ovarian steroids play a critical role in adult bone homeostasis.
  • Combined mechanical loading and sex steroids enhance osteogenic response.
  • Various reproductive factors are linked to bone health, highlighting the importance of ovarian function from menarche onwards.

Conclusions:

  • Optimal peak bone mass requires normal ovarian function, exercise, nutrition, and healthy lifestyle, starting from menarche.
  • Hormone replacement therapy (HRT) has limitations for fracture prevention in post-menopausal women.
  • Future osteoporosis treatments may involve androgen therapy, anabolic agents, and selective estrogen receptor ligands with bone-anabolic properties.