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Related Concept Videos

Sleep Apnea01:21

Sleep Apnea

348
Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
348

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Obstructive sleep apnea in obese minipigs.

Meng-Zhao Deng1,2, Mohamed Y Abdelfattah1,3, Michael C Baldwin4

  • 1Department Orthodontics, University of Washington, Seattle, USA.

Journal of Translational Science
|October 5, 2020
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Summary

Obese minipigs spontaneously develop obstructive sleep apnea (OSA), demonstrating heavy snoring and numerous apnea/hypopnea episodes. This finding establishes obese minipigs as a valuable large animal model for studying obesity-related OSA.

Keywords:
animal modelsobesityobstructive sleep apneasleep stagesswine

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Area of Science:

  • Veterinary Medicine
  • Sleep Medicine
  • Obesity Research

Background:

  • Obesity is a major risk factor for obstructive sleep apnea (OSA).
  • The mechanisms linking obesity and OSA are not fully understood.
  • Current treatments for OSA and obesity have limitations, necessitating better research models.

Purpose of the Study:

  • To establish a large animal model for studying obesity-related obstructive sleep apnea (OSA).
  • To investigate spontaneous OSA development in obese minipigs.

Main Methods:

  • Sleep studies were conducted on 4 obese (BMI > 48) and 3 non-obese (BMI < 40) minipigs.
  • Minipigs were instrumented for wireless recording of respiratory and sleep parameters (airflow, movements, EEG, EOG, EMG, O2 saturation).
  • Apnea and hypopnea episodes were identified during natural and sedated sleep, with behavior monitored via night-vision camera.

Main Results:

  • All 4 obese minipigs exhibited heavy snoring and 27-58 apnea/hypopnea episodes.
  • These events predominantly occurred during rapid eye movement (REM) sleep.
  • Non-obese minipigs showed minimal or no hypopnea events.

Conclusions:

  • Obese minipigs naturally develop obstructive sleep apnea (OSA).
  • Obese minipigs serve as an ideal large animal model for research into obesity-related OSA.
  • This model can facilitate the study of underlying mechanisms and development of novel treatments.