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Lessons from high altitude.

J V Weil1

  • 1CVP Research Laboratory, Department of Medicine, University of Colorado Health Sciences Center, Denver.

Chest
|March 1, 1990
PubMed
Summary
This summary is machine-generated.

Hypoxic chemosensitivity varies due to genetics and environment, impacting adaptation to altitude and lung diseases. Different strategies are employed for casual versus professional hypoxia exposure.

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Area of Science:

  • Physiology
  • Altitude Medicine
  • Respiratory Medicine

Background:

  • Hypoxic chemosensitivity, the body's response to low oxygen, is known to be variable.
  • This variability can be influenced by genetic factors and acquired conditions, affecting carotid body function.

Purpose of the Study:

  • To review evidence on the variability of hypoxic chemosensitivity.
  • To explore how this variation impacts adaptation to high altitude and hypoxic diseases like COPD.
  • To understand the different adaptive strategies for varying levels of hypoxia exposure.

Main Methods:

  • Literature review of existing evidence on hypoxic chemosensitivity.
  • Analysis of factors contributing to chemosensitivity variation (genetic, acquired).
  • Examination of the functional implications of chemosensitivity in different hypoxic conditions.

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Main Results:

  • Hypoxic chemosensitivity exhibits significant variability, influenced by both inherited and acquired factors.
  • Carotid body function is fundamentally altered by these variations.
  • This variability affects how individuals and species adapt to high altitude and chronic obstructive pulmonary disease.

Conclusions:

  • Variable hypoxic chemosensitivity plays a crucial role in physiological adaptation to hypoxia.
  • High chemosensitivity is advantageous for intermittent hypoxia, while profound adaptations occur in professionally adapted species.
  • Understanding chemosensitivity variation is key for managing high-altitude adaptation and hypoxic diseases.