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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Public Health.

José de Jesús Andrade1, Sofia Díaz-Cintra2, Omar Emiliano Aparicio Trejo3

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Physical exercise improved motor function and memory in an Alzheimer's disease (AD) mouse model. This intervention also reduced muscle atrophy and enhanced mitochondrial function, offering hope for AD patients.

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Area of Science:

  • Neuroscience
  • Gerontology
  • Exercise Physiology

Background:

  • Alzheimer's disease (AD) is a common neurodegenerative disorder characterized by amyloid plaques and tau tangles, leading to cognitive and motor deficits.
  • Motor symptoms in advanced AD include bradykinesia, rigidity, gait issues, and muscle wasting, significantly impacting quality of life.
  • The triple-transgenic 3xTg-AD mouse model is utilized to study AD, but the effects of physical exercise on its motor and neuromuscular changes are not fully understood.

Purpose of the Study:

  • To investigate the impact of a 16-week physical exercise program on motor impairments, memory, muscle mass, and mitochondrial function in the 3xTg-AD mouse model.
  • To assess the potential of physical exercise as a non-pharmacological intervention for Alzheimer's disease.

Main Methods:

  • A 16-week exercise protocol combining voluntary and forced exercise was applied to 3xTg-AD and Non-Tg mice.
  • Behavioral tests assessed locomotor activity, gait, strength, coordination, balance, and memory.
  • Muscle mass was analyzed via bioimpedance and histology; mitochondrial activity was examined using high-resolution respirometry.

Main Results:

  • Physical exercise significantly improved motor impairments in aged 3xTg-AD mice.
  • Exercise positively affected memory, reduced muscle atrophy, and enhanced mitochondrial activity in both brain and muscle tissues.
  • The intervention demonstrated benefits for neuromuscular and cognitive functions in the AD model.

Conclusions:

  • Physical exercise interventions show promise for mitigating the effects of Alzheimer's disease on the locomotor system.
  • Exercise may help preserve functionality, prevent muscle deterioration, and protect brain health in individuals with AD.
  • This study highlights the therapeutic potential of exercise for managing AD-related motor and cognitive decline.