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Pathophysiology of perinatal brain damage
1Department of Obstetrics and Gynecology, University of Bochum, Bochum, Germany. richard.berger2ruhr-uni-bochum.de
Brain Research. Brain Research Reviews
|October 19, 1999
Summary
Severe intrauterine asphyxia causes perinatal brain damage by disrupting oxygen supply and leading to calcium overload and cell death. Therapeutic strategies like magnesium and hypothermia show promise in animal models.
Area of Science:
- Neuroscience
- Perinatal Medicine
- Biochemistry
Background:
- Perinatal brain damage often results from intrauterine asphyxia, impacting fetal brain circulation.
- Key affected areas include the parasagittal cerebral cortex and basal ganglia.
Purpose of the Study:
- To elucidate the pathophysiological mechanisms of perinatal brain damage.
- To explore potential therapeutic strategies for mitigating this damage.
Main Methods:
- Review of current research on fetal response to oxygen deprivation.
- Analysis of cellular and molecular events during ischemia and reperfusion.
- Discussion of therapeutic interventions based on experimental findings.
Main Results:
- Asphyxia leads to sympathetic-adrenergic activation, circulatory centralization, and subsequent cerebral perfusion fall.
- Cellular damage involves calcium overload via voltage-dependent and glutamate-regulated channels.
- Inhibition of protein synthesis is an early indicator of neuronal cell death.
- Reperfusion triggers secondary damage via oxygen radicals, nitric oxide, inflammation, and neurotransmitter imbalance, potentially involving apoptosis.
Conclusions:
- Understanding these mechanisms is crucial for developing effective treatments.
- Intravenous magnesium and post-ischemic cerebral hypothermia are promising therapeutic avenues, demonstrated in animal studies.