Cellular Mechanisms of Intrapartum Hypoxic–Ischaemic Cerebral Injury

  • The immature brain has a lower overall oxygen demand compared to the mature brain; however, regions undergoing active maturation have significantly higher oxygen needs.
  • High oxygen demands in actively maturing regions are critical for enzyme functions involved in neuronal development, ion homeostasis (e.g., Na K-ATPase), and oxidative metabolism.
  • Failure to meet regional energy demands during fetal asphyxia leads to rapid energy depletion, initiating cellular injury and cell death cascades.

Role of Glutamate in Brain Development and Injury

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