Abstract
Menopause, or estrogen deficiency, predispose women towards fragility fractures resulting from impaired bone strength, as the composite consequence of : (1) increased bone resorption caused by proliferation and activation of osteoclasts ; (2) dissociation of coupling bone formation with resorption ; (3) deterioration of bone quality ; (4) decreased calcium absorption from intestines and resorption from renal tubules. The current explanation of each phenomenon is described in this article, although the exact mechanisms have not been unanimously defined.
MeSH terms
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Animals
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Bone Resorption / etiology
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Bone and Bones / metabolism*
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Calcium / metabolism*
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Cell Proliferation
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Cytokines / physiology
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Estrogens / deficiency
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Estrogens / physiology
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Female
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Follicle Stimulating Hormone / physiology
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Humans
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Inflammation Mediators / physiology
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Intestinal Absorption
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Kidney Tubules / metabolism
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Menopause / metabolism*
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Menopause / physiology*
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Mice
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Osteoclasts / cytology
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Osteogenesis / physiology
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Osteoporotic Fractures / etiology*
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Osteoporotic Fractures / prevention & control
Substances
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Cytokines
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Estrogens
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Inflammation Mediators
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Follicle Stimulating Hormone
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Calcium