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Taurine 3 pp 347-353 | Cite as

Cell-Damaging Conditions Release More Taurine than Excitatory Amino Acids from the Immature Hippocampus

  • Pirjo Saransaari
  • Simo S. Oja
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 442)

Abstract

High concentrations of excitatory amino acids are neurotoxic and overstimulation of their receptors contributes to neuronal death during cerebral ischemia35. Excitatory amino acids are released from neural structures from adult animals during hypoxia and ischemia1,7,20,23. Oxygen-derived free radicals formed in hypoxic brain tissue also induce release of excitatory amino acids22 and thus contribute to ischemia-induced neuronal damage4. Of the various brain areas, the hippocampus is particularly vulnerable to ischemic injury25. In the newborn, however, the hippocampus is relatively well spared after hypoxia and ischemia3,5. The major part of excitatory innervation in the hippocampus is glutamatergic. Taurine also abounds in the hippocampus11 and taurine-like immunore-activity has been located in hippocampal interneurons, pyramidal neurons and dentate granule cells15. This inhibitory amino acid seems to be essential for the development and survival of neural cells8,34. We have now assessed the simultaneous release of endogenous excitatory amino acids, glutamate and aspartate, together with taurine, in the above cell-damaging conditions in hippocampal slices prepared from immature mice.

Keywords

Hippocampal Slice Excitatory Amino Acid Basal Release Inhibitory Amino Acid Taurine Release 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Pirjo Saransaari
    • 1
  • Simo S. Oja
    • 1
    • 2
  1. 1.Tampere Brain Research CenterUniversity of Tampere Medical SchoolTampereFinland
  2. 2.Department of Clinical PhysiologyTampere University HospitalTampereFinland

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