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Physiological and pathological responses to hypoxia.

Carine Michiels1

  • 1Laboratoire de Biochimie et Biologie Cellulaire, University of Namur, Namur, Belgium. carine.michiels@fundp.ac.be

The American Journal of Pathology
|May 27, 2004
PubMed
Summary

Cells adapt to low oxygen levels (hypoxia), a factor in heart attack, stroke, and cancer. This review details oxygen-sensing systems and adaptive responses to hypoxia in disease.

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Area of Science:

  • Physiology
  • Pathology
  • Molecular Biology

Background:

  • Aging populations face increased mortality from heart infarction, stroke, and cancer.
  • These diseases share a common feature: impaired oxygen availability (hypoxia).
  • Cellular and organismal adaptive responses to hypoxia are crucial for survival.

Purpose of the Study:

  • To review oxygen-sensing systems in biological organisms.
  • To describe cellular and organismal responses to acute and long-term hypoxia.
  • To discuss the role of hypoxia in myocardial ischemia, cerebral ischemia, and tumorigenesis.

Main Methods:

  • Literature review of hypoxia-sensing mechanisms.
  • Analysis of adaptive responses to varying oxygen concentrations.
  • Synthesis of current knowledge on hypoxia in major diseases.

Main Results:

  • Multiple systems exist for sensing oxygen levels within cells and organisms.
  • Hypoxia triggers adaptive responses crucial for coping with low oxygen conditions.
  • Hypoxia plays a significant role in the pathogenesis of ischemia and cancer.

Conclusions:

  • Understanding hypoxia adaptation is vital for addressing age-related diseases.
  • Targeting oxygen-sensing pathways may offer therapeutic strategies.
  • Further research into hypoxia's role in disease is warranted.

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