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[Calcium, neuronal death and neurological disease]
F J Jiménez-Jiménez1, P J García-Ruiz, F de Bustos
1Servicio de Neurología Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, España.
Revista De Neurologia
|October 1, 1996
Summary
Excessive calcium ion (Ca2+) influx into neurons causes cell death and is implicated in neurodegenerative diseases. Understanding calcium regulation is key to developing treatments for these conditions.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Context:
- Calcium ions (Ca2+) are critical for normal central nervous system function, including action potential generation, neurotransmitter release, and neuronal plasticity.
- Dysregulation of intracellular calcium concentration, often due to impaired calcium channels or binding proteins, leads to excessive Ca2+ influx.
- This excessive influx triggers a cascade of events resulting in cytotoxicity and neuronal death.
Purpose:
- To review the current understanding of calcium ion-mediated neurotoxicity.
- To highlight the role of calcium dysregulation in the pathogenesis of various neurological disorders.
Summary:
- Calcium ions (Ca2+) are essential for neuronal function but their excessive influx can cause neuronal death.
- Mechanisms regulating intracellular calcium, such as Ca2+-channels and calcium binding proteins, are crucial for preventing excitotoxicity.
- Ca2+-mediated toxicity is a significant factor in neurodegenerative diseases (e.g., Parkinson's, Alzheimer's), brain ischemia, epilepsy, and trauma.
Impact:
- Provides a comprehensive overview of calcium's dual role in the CNS.
- Underscores the importance of calcium homeostasis in neurological health.
- Informs research directions for therapeutic strategies targeting calcium dysregulation in neurodegenerative and acute brain injuries.