HYPOXIC BRAIN DAMAGE

Pathology of hypoxic brain damage in man.

Vasodilatory prostaglandins in perinatal hypoxic brain damage.

Prostaglandin (PGE2 and PGI2) synthesis was determined in the cerebrospinal fluid (CSF) and serum of 19 hypoxic neonates at the age of 5-96 hours by using Enzyme Linked Immunosorbent Assay (ELISA) method. Control group consisted of 8 children of the same age whose samples were taken due to initial suspicion of neonatal meningitis. The prostaglandin concentrations in CSF were correlated with ini...

MK-801 protects the neonatal brain from hypoxic-ischemic damage.

Enhanced synaptic release of excitatory amino acid neurotransmitters may contribute to brain injury from hypoxia-ischemia (Meldrum, 1985; Simon et al., 1984). To examine this hypothesis in neonatal brain we tested MK-80I , a novel noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, using an in vivo experimental model of hypoxic-ischemic forebrain injury (Johnston, 1983). To induce i...

Metabolic stages, mitochondria and calcium in hypoxic/ischemic brain damage.

Cerebral hypoxia/ischemia leads to mitochondrial dysfunction due to lack of oxygen leaving the glycolytic metabolism as a main pathway for ATP production. Inhibition of mitochondrial respiration thus triggers generation of lactate and hydrogen ions (H+), and furthermore dramatically reduces ATP generation leading to disregulation of cellular ion metabolism with subsequent intracellular calcium ...

Phenytoin pretreatment prevents hypoxic-ischemic brain damage in neonatal rats.

This study was performed to investigate whether the anticonvulsant phenytoin has neuroprotective effect in a model of hypoxia-ischemia with neonatal rats. The left carotid artery of each rat was ligated, followed by 3 h of hypoxic exposure (8% O2) in a temperature-regulated environment (36 degrees C). Two weeks later, brain damage was assessed by measuring loss of brain hemisphere weight. Pheny...