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Mitochondria and neuronal survival.

D G Nicholls1, S L Budd

  • 1Department of Pharmacology, University of Dundee, Dundee, Scotland. d.g.nichollsf@dundee.ac.uk

Physiological Reviews
|January 5, 2000
PubMed
Summary
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Current molecular medicine·2004

Mitochondria are crucial for neuron survival and death. This review details their bioenergetic functions, applying principles from isolated mitochondria to understand their role in intact neurons.

Area of Science:

  • Neuroscience
  • Cell Biology
  • Bioenergetics

Background:

  • Mitochondria are vital for neuronal function, impacting both survival and death pathways.
  • Understanding mitochondrial bioenergetics is key to comprehending neuronal physiology and pathology.

Purpose of the Study:

  • To review the functional bioenergetics of isolated mitochondria.
  • To apply these principles to mitochondria within intact neurons under various conditions.
  • To emphasize the role of the chemiosmotic proton circuit.

Main Methods:

  • Review of existing literature on mitochondrial bioenergetics.
  • Analysis of ATP generation, calcium sequestration, and reactive oxygen species production.
  • Examination of Ca(2+)-dependent inner membrane permeabilization.

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Main Results:

  • Mitochondrial bioenergetic mechanisms are being adapted to study their function in situ.
  • The chemiosmotic proton circuit is central to mitochondrial energy production.
  • Mitochondria are integral to both necrotic and apoptotic neuronal cell death.

Conclusions:

  • Functional bioenergetics of isolated mitochondria provide a framework for understanding mitochondrial roles in neurons.
  • Accurate application of these principles is essential for studying mitochondria in intact neurons.
  • Mitochondrial dysfunction contributes significantly to neuronal cell death.