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Related Concept Videos

Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Human Genetics01:28

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
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Aging01:26

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
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Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
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Related Experiment Video

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Getting to Compliance in Forced Exercise in Rodents: A Critical Standard to Evaluate Exercise Impact in Aging-related Disorders and Disease
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Cognitive Dysfunction and Exercise: From Epigenetic to Genetic Molecular Mechanisms.

Runhong Zhang1, Shangwu Liu2, Seyed Mojtaba Mousavi3

  • 1Department of Physical Education, Luliang University, Lishi, 033000, Shanxi, China. llxyzrh0508@163.com.

Molecular Neurobiology
|January 29, 2024
PubMed
Summary

Regular exercise enhances cognitive function by influencing neural plasticity and gene expression. This safe, non-pharmacological approach offers a promising strategy to combat age-related cognitive decline and improve brain health.

Keywords:
Age-related disordersCognitive dysfunctionEpigeneticExerciseGenetic

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Area of Science:

  • Neuroscience
  • Exercise Physiology
  • Genetics

Background:

  • Cognitive impairment is a growing concern with aging populations and neurodegenerative diseases.
  • It leads to memory loss, confusion, and reduced quality of life, impacting emotional well-being and incurring societal costs.
  • Current treatments primarily slow cognitive decline, highlighting the need for accessible interventions.

Purpose of the Study:

  • To summarize the genetic and epigenetic mechanisms through which exercise modulates cognitive dysfunction.
  • To explore exercise as a non-pharmacological intervention for maintaining cognitive health.
  • To understand the intricate effects of exercise on brain function.

Main Methods:

  • Review of existing literature on exercise, genetics, epigenetics, and cognitive function.
  • Analysis of studies investigating the molecular and cellular changes induced by physical activity.
  • Synthesis of findings related to neural plasticity, mitochondrial function, and cytokine release.

Main Results:

  • Exercise positively impacts cognitive function across all ages.
  • Mechanisms include enhanced neural plasticity, improved mitochondrial stability, and altered energy metabolism.
  • Exercise-induced cytokine release and epigenetic modifications contribute to lasting brain health benefits.

Conclusions:

  • Exercise is a safe and accessible strategy to improve cognitive function and combat cognitive decline.
  • Understanding the genetic and epigenetic pathways offers new avenues for therapeutic development.
  • Physical activity plays a crucial role in maintaining brain health and overall well-being throughout the lifespan.