Affiliations: Neurosciences Institute, Department of Pharmacology and Neuroscience, University of Dundee, Dundee DD1 9SY, Scotland, UK
Note: [] To whom correspondence should be addressed: Neurosciences Institute, Department of Pharmacology and Neuroscience, University of Dundee, Dundee DD1 9SY, Scotland, UK. Fax: 01382 667120; E‐mail: [email protected].
Note: [] Present address: CNS Research Institute, LMRC First Floor, 221 Longwood Avenue, Brigham & Women’s Hospital, Boston, MA 02115, USA.
Abstract: Chronic activation of NMDA receptors by glutamate is toxic to cultured neurons. The extensive Ca^{2+} entry accompanying receptor activation is largely accumulated by the intracellular mitochondria, with resultant effects on mitochondrial membrane potential, ATP synthesis, glycolysis, reactive oxygen species generation and ultimately failure of cytoplasmic Ca^{2+} homeostasis and cell death. Each of these parameters is inter‐related and in this review we describe attempts to separate out each factor to establish the sequence of events following NMDA receptor activation. The conclusion is that mitochondrial Ca^{2+} accumulation is a key event in glutamate excitotoxicity, and that cells maintained by glycolysis in the absence of a mitochondrial membrane potential are highly resistant to glutamate excitotoxicity.
Journal: Biofactors, vol. 8, no. 3-4, pp. 287-299, 1998
