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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.
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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...
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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.
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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
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Related Experiment Video

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Sarcopenia in older people.

Solomon Yu1, Kandiah Umapathysivam, Renuka Visvanathan

  • 11Adelaide Geriatrics Training and Research with Aged Care (G-TRAC) Center, School of Medicine, University of Adelaide 2Aged and Extended Care Services, Queen Elizabeth Hospital, Central Adelaide Local Health Network 3The Joanna Briggs Institute, School of Translational Health Science, Faculty of Health Sciences, University of Adelaide, Adelaide, South Australia, Australia.

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Summary

Sarcopenia, the age-related loss of muscle mass and strength, is increasingly prevalent. Early screening and intervention are crucial for managing this condition and improving health outcomes in aging populations.

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Area of Science:

  • Gerontology
  • Musculoskeletal Health
  • Aging Research

Background:

  • Sarcopenia, characterized by age-related loss of muscle mass and strength, is a growing concern globally, particularly in aging societies like Australia.
  • Its adverse health consequences include increased falls, loss of independence, elevated healthcare costs, and diminished quality of life.
  • International efforts are underway to establish a consensus definition and promote clinical screening for sarcopenia.

Purpose of the Study:

  • To review current understanding and approaches to sarcopenia.
  • To highlight the importance of early screening and intervention strategies.
  • To discuss emerging pharmaceutical treatments and current management options.

Main Methods:

  • Review of international literature and consensus efforts regarding sarcopenia definition and screening.
  • Discussion of environmental and medical factors contributing to sarcopenia.
  • Overview of current and developing treatment strategies, including nutrition, physical therapy, and pharmaceuticals.

Main Results:

  • Growing international attention and efforts towards defining and screening for sarcopenia.
  • Emphasis on early detection to facilitate timely intervention.
  • Identification of nutritional supplementation and physical therapy as current management strategies.
  • Development of pharmaceutical treatments with potential for future clinical trials.

Conclusions:

  • Sarcopenia is a significant age-related condition with substantial health and economic impacts.
  • Early screening and intervention are vital for mitigating the consequences of sarcopenia.
  • A multi-faceted approach involving lifestyle modifications and potential future pharmaceutical interventions is key to managing sarcopenia.