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A Model of Chronic Nutrient Infusion in the Rat
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Decrease in Circulating Fatty Acids Is Associated with Islet Dysfunction in Chronically Sleep-Restricted Rats.

Shanshan Zhan1, Yangyang Wu2, Peng Sun3

  • 1Key Laboratory of Human Functional Genomics of Jiangsu Province, Jiangsu Diabetes Center, Nanjing Medical University, Nanjing 210029, China. zsskr@sina.com.

International Journal of Molecular Sciences
|December 17, 2016
PubMed
Summary
This summary is machine-generated.

Chronic sleep restriction impairs lipid and glucose metabolism, leading to fatty acid metabolism dysfunction and reduced insulin secretion. Dietary fat partially restored islet function, highlighting sleep

Keywords:
circulating fatty acidsislet functionmetabonomicssleep-restrictionstress response

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Area of Science:

  • Metabolic Science
  • Neuroscience
  • Endocrinology

Background:

  • Sleep restriction-induced environmental stress is linked to abnormal metabolism.
  • The precise mechanisms underlying these metabolic changes remain poorly understood.
  • Investigating lipid and glucose metabolism in sleep-deprived states is crucial.

Purpose of the Study:

  • To investigate lipid and glucose metabolism patterns in chronically sleep-restricted rats.
  • To elucidate the underlying mechanisms of metabolic dysfunction due to sleep loss.

Main Methods:

  • Utilized ¹H NMR metabolomics and GC-FID/MS analysis to examine serum metabolites.
  • Assessed body weight, energy expenditure, blood glucose, and serum insulin levels.
  • Evaluated glucose tolerance and islet function (glucose-stimulated insulin secretion).

Main Results:

  • Sleep-restricted rats showed decreased body weight, increased energy expenditure, and altered serum metabolites (lipoproteins, triglycerides, amino acids, choline).
  • Impaired fatty acid metabolism was indicated by decreased fatty acid components.
  • Elevated blood glucose, reduced insulin, impaired glucose tolerance, and decreased glucose-stimulated insulin secretion were observed.

Conclusions:

  • Chronic sleep restriction disrupts lipid and glucose metabolism, potentially through impaired fatty acid metabolism and subsequent islet dysfunction.
  • Increasing dietary fat partially restored insulin secretion, suggesting a link between circulating fatty acids and islet function under sleep deficiency.
  • This study offers insights into the metabolic consequences of insufficient sleep and its impact on a healthy lifestyle.