5 Αποτελέσματα
The vulnerability of the developing CNS to hypoxia-ischemia (H-I) differs from that of the mature brain and is due in part to release of nitric oxide (NO) from parenchymal neurons. If NO is important in the generation of excitotoxic injury after H-I in the developing CNS, then selective destruction
In an experimental model of perinatal hypoxic-ischemic brain injury, we examined quisqualic acid (Quis)-stimulated phosphoinositide (PPI) turnover in hippocampus and striatum. To produce a unilateral forebrain lesion in 7-day-old rat pups, the right carotid artery was ligated and animals were then
Previous work in our laboratory demonstrated that ischemic-hypoxic brain injury in postnatal day 7 rats causes a substantial increase in phosphoinositide (PPI) turnover stimulated by the glutamate analogue quisqualic acid (QUIS) in the hippocampus and striatum. To examine this phenomenon in more
The intracerebral injection of the excitotoxins, glutamate (GLU), or its analogues, quisqualic acid (QA) and N-methyl-D-aspartate (NMDA), produces neuropathologic changes which resemble those induced by hypoxic-ischemic injury. We employed proton magnetic resonance spectroscopy to investigate the
To further define the ontogeny of "excitotoxic" injury to brain, intrastriatal injection of an N-methyl-D-aspartate agonist (quinolinate) and a non-N-methyl-D-aspartate agonist (quisqualate) was performed in rats at postnatal days 7 and 14, and in adults. Excitotoxic injury was quantified