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Bone: A Neglected Endocrine Organ?
Anna Szeliga1, Monika Grymowicz2, Anna Kostrzak1
1Department of Gynecological Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland.
Journal of Clinical Medicine
|July 13, 2024
Summary
Bone is a complex endocrine organ, not just structural. It produces hormones like osteocalcin, impacting metabolism and testosterone, and bone marrow adipose tissue secretes factors affecting local and systemic effects.
Area of Science:
- Endocrinology
- Bone Biology
- Metabolic Research
Background:
- Bone traditionally viewed for structural support and calcium homeostasis.
- Emerging research highlights bone as a complex endocrine organ.
- Bone produces hormones crucial for autoregulating its own metabolism.
Purpose of the Study:
- To explore the multifaceted endocrine functions of bone.
- To discuss key bone-derived hormones and their systemic effects.
- To highlight the role of bone marrow adipose tissue as an endocrine organ.
Main Methods:
- Review of current literature on bone endocrinology.
- Analysis of the roles of osteocalcin and Neuropeptide Y (NPY).
- Examination of bone turnover markers in hormonal disorders.
Main Results:
- Osteocalcin enhances insulin sensitivity, lowers blood glucose, and increases testosterone in males.
- Neuropeptide Y (NPY) from osteocytes/osteoblasts may regulate bone formation.
- Bone marrow adipose tissue secretes diverse factors with local and systemic effects.
Conclusions:
- Bone's endocrine role is critical for metabolic regulation and overall health.
- Osteocalcin and NPY are key signaling molecules produced by bone.
- Bone marrow adipose tissue contributes significantly to systemic endocrine signaling.
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