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Prenatal hypoxia and cardiac programming.

Lubo Zhang1

  • 1Center for Perinatal Biology, Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, California 92350, USA. lzhang@som.llu.edu

Journal of the Society for Gynecologic Investigation
|January 5, 2005
PubMed
Summary

Prenatal exposure to chronic hypoxia, a condition of low oxygen, can lead to intrauterine growth restriction and increase the risk of adult heart disease through altered cardiac development and function.

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Area of Science:

  • Cardiovascular Science
  • Developmental Biology
  • Perinatal Medicine

Background:

  • Adverse intrauterine environments are linked to adult cardiovascular diseases like hypertension and coronary heart disease.
  • Maternal undernutrition and fetal glucocorticoid exposure are known programming factors.
  • Emerging evidence suggests prenatal exposure to hypoxia, alcohol, tobacco, and cocaine may also increase adult disease risk.

Purpose of the Study:

  • To review evidence associating prenatal hypoxic exposure with adult heart disease vulnerability.
  • To explore the underlying mechanisms of this association.

Main Methods:

  • Literature review of epidemiologic and experimental studies.
  • Analysis of mechanisms including cardiac function, gene expression, and cardiomyocyte cell cycle.

Main Results:

  • Chronic prenatal hypoxia is associated with intrauterine growth retardation.
  • Hypoxia impacts fetal cardiac function, alters gene expression, increases apoptosis, and promotes cardiomyocyte hypertrophy.
  • These changes suggest a mechanism for increased adult heart disease risk.

Conclusions:

  • Prenatal hypoxic exposure is a significant risk factor for adult heart disease.
  • Understanding these programming mechanisms is crucial for prevention and intervention strategies.

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