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Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
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Updated: Aug 14, 2025

A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice
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Nutritional geometry framework of sleep.

Mei-Ling Lai1, An-Qi Li1, Alistair M Senior2

  • 1Laboratory of Metabolism and Aging, School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen 518107, China.

Life Sciences
|January 14, 2023
PubMed
Summary
This summary is machine-generated.

Dietary balance significantly impacts sleep. Low protein and high carbohydrates promote longer, higher-quality sleep in Drosophila, potentially through metabolic pathways involving glucose, glycogen, and amino acids like glycine, serine, and threonine.

Keywords:
CarbohydratesDietary balanceDrosophilaMicronutrientNutritional geometry frameworkProteinSleep

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Area of Science:

  • Nutritional science
  • Sleep research
  • Metabolomics

Background:

  • Sleep is a vital physiological process influenced by diet.
  • The precise impact of macronutrient balance on sleep remains under-investigated.

Purpose of the Study:

  • To systematically investigate the interactive effects of protein and carbohydrate ratios on sleep patterns.
  • To explore the underlying metabolic mechanisms linking diet composition to sleep regulation.

Main Methods:

  • Utilized the nutritional geometry framework (NGF) in Drosophila melanogaster.
  • Administered diets with varying protein-to-carbohydrate ratios and energy levels.
  • Monitored sleep using the Drosophila Activity Monitor (DAM) system and performed transcriptomic analyses.

Main Results:

  • A low-protein, high-carbohydrate (LPHC) diet significantly increased sleep duration and quality.
  • Dietary macronutrient effects correlated with hemolymph glucose and whole-body glycogen levels.
  • High-protein, low-carbohydrate (HPLC) diets upregulated metabolic pathways, particularly glycine, serine, and threonine metabolism, which were confirmed to influence sleep.

Conclusions:

  • Dietary macronutrient balance, specifically the ratio of protein to carbohydrates, critically affects sleep duration and quality.
  • Metabolic mediators including glucose, glycogen, and specific amino acids (glycine, serine, threonine) are implicated in diet-induced sleep modulation.