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[Neuroprotection by ketamine at the cellular level]
1Universitätsklinik für Anästhesiologie, Klinikum der Universität Ulm.
Der Anaesthesist
|March 1, 1997
Summary
Ketamine, particularly S(+)-ketamine, shows promise for neuroprotection by regulating calcium and reducing neuronal damage after injury. Further research is needed to confirm its clinical efficacy in humans.
Area of Science:
- Neuroscience
- Pharmacology
Context:
- Investigating neuroprotection strategies post-injury.
- Assessing clinically relevant concentrations of pharmacologic agents.
Purpose:
- To evaluate the neuroprotective and neuroregenerative potential of ketamine, especially S(+)-ketamine.
- To understand ketamine's mechanisms in preventing neuronal degeneration.
Summary:
- Ketamine, an N-methyl-D-aspartate (NMDA) antagonist, protects neurons by regulating intracellular calcium and blocking excessive NMDA-receptor stimulation.
- Studies show ketamine preserves neuronal viability, morphology, energy status (ATP, metabolism), and electrophysiological functions after insults.
- S(+)-ketamine exhibits enhanced neuroprotective and neuroregenerative effects, including axonal re-outgrowth and growth-associated protein expression, due to higher affinity for the NMDA receptor.
Impact:
- Ketamine, especially S(+)-ketamine, demonstrates significant potential as a neuroprotective agent.
- Findings support further investigation into ketamine's clinical application for neuronal injury.
- Highlights the potential of targeting NMDA receptors for therapeutic interventions in neurodegenerative conditions.