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Skeletal Aging
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DOI：10.1016/j.mayocp.2022.03.011.png)
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Abstract
En 中文
Aging represents the single greatest risk factor for chronic diseases, including osteoporosis, a skeletal fragility syndrome that increases fracture risk. Optimizing bone strength throughout life reduces fracture risk. Factors critical for bone strength include nutrition, physical activity, and vitamin D status, whereas unhealthy lifestyles, illnesses, and certain medications (eg, glucocorticoids) are detrimental. Hormonal status is another important determinant of skeletal health, with sex steroid concentrations, particularly estrogen, having major effects on bone remodeling. Aging exacerbates bone loss in both sexes and results in imbalanced bone resorption relative to formation; it is associated with increased marrow adiposity, osteoblast/osteocyte apoptosis, and accumulation of senescent cells. The mechanisms underlying skeletal aging are as diverse as the factors that determine the strength (and thus fragility) of bone. This review updates our current understanding of the epidemiology, pathophysiology, and treatment of osteoporosis and provides an overview of the underlying hallmark mechanisms that drive skeletal aging. (C) 2022 Mayo Foundation for Medical Education and Research
Keywords:
BONE-MINERAL DENSITY
POSTMENOPAUSAL WOMEN
VITAMIN-D
TRABECULAR BONE
OLDER-ADULTS
MARROW FAT
CELLULAR SENESCENCE
ZOLEDRONIC ACID
ELDERLY-WOMEN
FRACTURE PREVENTION
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