Related Experiment Video
Updated: Sep 3, 2025
07:32
Assessing Iron Deposition in the Brains of 5xFAD Mice by Perls'/DAB Staining
Published on: May 23, 2025
439
Age-Related Changes in Skeletal Muscle Iron Homeostasis
Francesca M Alves1, Scott Ayton2, Ashley I Bush2
1Centre for Muscle Research, Department of Anatomy and Physiology, The University of Melbourne, Victoria, Australia.
Summary
Sarcopenia, an age-related muscle loss, may be linked to iron dysregulation. Further research is needed to understand iron
Area of Science:
- Gerontology
- Muscle Physiology
- Nutritional Biochemistry
Background:
- Sarcopenia is a progressive age-related loss of muscle mass and strength, leading to frailty and increased mortality.
- Its incidence is projected to exceed 200 million globally within 40 years, necessitating urgent research into underlying mechanisms.
- Current understanding of sarcopenia's biological drivers remains incomplete.
Approach:
- This review examines the role of iron in skeletal muscle metabolism and its potential contribution to sarcopenia.
- It outlines mechanisms contributing to iron overload in aging muscle.
- The evidence supporting the "iron overload hypothesis of sarcopenia" is evaluated.
Key Points:
- Iron is crucial for muscle metabolic functions like oxygen transport and energy production.
- Excess or dysregulated iron (e.g., ferroptosis) can induce oxidative stress and inflammation in muscle.
- Aging may lead to iron dysregulation within skeletal muscle.
Conclusions:
- Further studies are required to elucidate the mechanisms of iron overload in aging skeletal muscle.
- Research should investigate potential functional iron deficiency in aging muscles and its impact on oxidative metabolism.
- Understanding iron's role could reveal novel therapeutic targets for sarcopenia.
More Related Videos
Related Concept Videos
01:29Bone Disorders
3.9K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
3.9K
01:24Factors Affecting Erythropoiesis
3.6K
The cardiovascular system regulates the number of erythrocytes in the bloodstream to ensure optimal oxygen transport. It also prevents over-proliferation of these cells, which helps to maintain blood viscosity and flow rate.
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
3.6K
01:09Changes in the Appendicular Skeleton with Age
2.2K
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
2.2K
01:21Skeleton and Calcium Homeostasis
4.7K
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
4.7K
01:19The Effect of Aging on Tissues
2.3K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
2.3K
01:28Disorders of the Skeletal Muscle
1.1K
The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
1.1K