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Related Experiment Videos

Respiratory plasticity following intermittent hypoxia: developmental interactions.

E Gozal1, D Gozal

  • 1Kosair Children's Hospital Research Institute, Departments of Pediatrics, Pharmacology, and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|April 12, 2001
PubMed
Summary

Intermittent hypoxia (IH) in developing mammals can alter respiratory responses long-term. Early IH exposure may lead to persistent physiological changes, impacting adult responses to hypoxia.

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Area of Science:

  • Physiology
  • Developmental Biology
  • Neuroscience

Background:

  • Intermittent hypoxia (IH) is common in developing mammals.
  • IH can induce long-lasting adaptive plasticities in respiratory control.
  • Developmental stage and IH characteristics influence physiological responses.

Purpose of the Study:

  • To examine the impact of early-life intermittent hypoxia on physiological responses.
  • To understand the long-term consequences of IH on respiratory control.
  • To identify potential interventional strategies for infants at risk of apnea.

Main Methods:

  • The study reviews existing literature on intermittent hypoxia in developing mammals.
  • It analyzes the effects of IH duration, frequency, severity, and developmental timing.

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  • The focus is on ventilatory, metabolic, and cardiovascular responses.

    • Main Results:

    • Early IH exposure can alter physiological responses to hypoxia into adulthood.
    • Short-term effects on hypoxic ventilatory response (HVR) in neonates resemble adults (biphasic pattern).
    • Long-term molecular and cellular effects of IH related to developmental maturity are largely unknown.

    Conclusions:

    • The timing and characteristics of IH significantly influence its long-term physiological consequences.
    • Further research is needed to elucidate the molecular mechanisms underlying IH effects.
    • Understanding these mechanisms could lead to interventions against infant apnea and SIDS.