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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.
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Cellular Immune Dysfunction in Obstructive Sleep Apnea.

Katharina Ludwig1, Tilman Huppertz1, Markus Radsak2

  • 1Sleep Medicine Center, Department of Otorhinolaryngology, Medical Center of the Johannes Gutenberg-University of Mainz, Mainz, Germany.

Frontiers in Surgery
|July 25, 2022
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Summary

Obstructive sleep apnea (OSA) causes intermittent hypoxia, leading to inflammation. This review examines OSA

Keywords:
B cellsT cellscellular immune systemdendritic cellsinterleukinsmonocytesnatural killer cellsobstructive sleep apnea

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Area of Science:

  • Immunology
  • Sleep Medicine
  • Cardiovascular Research

Background:

  • Obstructive sleep apnea (OSA) is a prevalent sleep disorder characterized by repetitive breathing cessations during sleep.
  • These events lead to chronic intermittent tissue hypoxia and a documented pro-inflammatory state in affected patients.
  • Existing research on OSA primarily focuses on systemic inflammation, with limited exploration of its impact on the cellular immune system.

Purpose of the Study:

  • To consolidate and review current literature on the effects of obstructive sleep apnea on the cellular immune system.
  • To highlight the known association between OSA, its pro-inflammatory status, and comorbidities like atherosclerosis.
  • To identify gaps in knowledge regarding specific immune cell type involvement in OSA.

Main Methods:

  • Systematic literature search of studies investigating cellular immunity in obstructive sleep apnea patients.
  • Analysis of findings related to various immune cell populations and their subtypes.
  • Synthesis of data to provide a comprehensive overview of the cellular immune response in OSA.

Main Results:

  • Evidence suggests significant alterations in multiple cellular immune components in OSA patients.
  • Specific immune cell subsets demonstrate functional and numerical changes correlating with OSA severity.
  • The pro-inflammatory environment in OSA appears to dysregulate cellular immune responses.

Conclusions:

  • Obstructive sleep apnea profoundly impacts the cellular immune system, extending beyond general inflammation.
  • Understanding these cellular-level changes is crucial for elucidating OSA's role in comorbid conditions like atherosclerosis.
  • Further research is warranted to fully characterize the specific cellular immune dysfunctions in OSA.