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Insufficient Sleep and Sleep Deprivation01:13

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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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Sleep deprivation and gene expression.

Annie da Costa Souza1, Sidarta Ribeiro

  • 1Instituto do Cérebro, Universidade Federal do Rio Grande do Norte (UFRN), Av. Nascimento de Castro 2155, Natal-RN, Brazil.

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|February 4, 2015
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Summary
This summary is machine-generated.

Sleep deprivation significantly alters gene expression in the nervous system, impacting neuronal plasticity, cognition, and overall physiological functions across species. This disruption affects transcription, translation, and leads to broader health issues beyond the brain.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Sleep is a fundamental biological process essential for homeostasis, metabolic restoration, and cognitive function.
  • Sleep deprivation causes significant perturbations, primarily affecting gene transcription and translation within the central nervous system.

Purpose of the Study:

  • To review how sleep deprivation impacts gene expression in the nervous system across humans, rodents, and flies.
  • To focus on genes related to neuronal plasticity, brain function, and cognition.

Main Methods:

  • Review of existing studies on sleep deprivation effects.
  • Analysis of gene expression changes in the nervous system.
  • Comparative analysis across different species (humans, rodents, flies).

Main Results:

  • Sleep loss alters gene expression, particularly affecting genes involved in neuronal plasticity, brain function, and cognition.
  • Effects extend beyond cognitive domains, including increased inflammation and stress-related gene expression.
  • Impairment of protein translation, metabolic imbalance, and thermal deregulation are also consequences of sleep loss.

Conclusions:

  • Sleep deprivation profoundly impacts gene expression in the nervous system with wide-ranging functional consequences.
  • These consequences affect not only cognitive functions but also systemic physiological processes like inflammation and metabolism.
  • Understanding these molecular changes is crucial for addressing the health impacts of sleep loss.