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Aging01:26

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The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
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Updated: Sep 20, 2025

Preparation and Culture of Myogenic Precursor Cells/Primary Myoblasts from Skeletal Muscle of Adult and Aged Humans
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Skeletal Aging.

Jad G Sfeir1, Matthew T Drake1, Sundeep Khosla1

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Summary
This summary is machine-generated.

Aging accelerates bone loss and increases osteoporosis risk. Understanding skeletal aging mechanisms is key to optimizing bone strength and reducing fracture risk throughout life.

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Area of Science:

  • Gerontology
  • Orthopedics
  • Endocrinology

Background:

  • Aging is the primary risk factor for chronic diseases, notably osteoporosis, a condition characterized by skeletal fragility and increased fracture susceptibility.
  • Bone strength is influenced by lifestyle factors (nutrition, physical activity, vitamin D), health status, medications, and hormonal balance, particularly estrogen levels affecting bone remodeling.

Purpose of the Study:

  • To provide a comprehensive review of the epidemiology, pathophysiology, and treatment of osteoporosis.
  • To elucidate the hallmark mechanisms driving skeletal aging and bone loss.

Main Methods:

  • Literature review and synthesis of current research on skeletal aging and osteoporosis.
  • Analysis of factors influencing bone strength, including hormonal status, lifestyle, and cellular processes.

Main Results:

  • Aging leads to exacerbated bone loss in both sexes, characterized by imbalanced bone resorption over formation.
  • Key aging mechanisms include increased marrow adiposity, osteoblast/osteocyte apoptosis, and accumulation of senescent cells.
  • Hormonal changes, particularly decreased estrogen, significantly impact bone remodeling during aging.

Conclusions:

  • Optimizing bone strength across the lifespan is crucial for mitigating osteoporosis and fracture risk.
  • Understanding the diverse mechanisms of skeletal aging is essential for developing effective therapeutic strategies.
  • This review consolidates current knowledge on osteoporosis and highlights critical pathways in skeletal aging.