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Apoptosis in the nervous system: morphological features, methods, pathology, and prevention
A C Lo1, L J Houenou, R W Oppenheim
1Department of Neurobiology and Anatomy, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, NC, USA.
Archives of Histology and Cytology
|June 1, 1995
Summary
Apoptosis, a programmed cell death, is crucial for nervous system development and implicated in neurodegenerative diseases. Understanding its mechanisms, distinct from necrosis, aids in developing treatments for conditions like ALS and Alzheimer's.
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Apoptosis, a distinct form of cell death, is vital for normal nervous system development, with ~50% of neurons undergoing programmed cell death.
- Neuronal death can also occur due to injury or disease later in life, with apoptosis implicated in neurodegenerative conditions.
Purpose of the Study:
- To review the morphological differences and differentiation methods between apoptosis and necrosis.
- To discuss motoneuron cell death during development, injury, and disease.
- To explore agents, including neurotrophic factors, that may prevent motoneuron death.
Main Methods:
- Morphological comparison of apoptotic vs. necrotic cell death.
- Review of methods for differentiating apoptotic and necrotic pathways.
- Discussion of in vitro, in vivo, and animal models for studying motoneuron survival and death.
Main Results:
- Apoptosis is a key mechanism in normal neuronal development and implicated in neurodegenerative diseases.
- Gene mutations linked to familial ALS and spinal muscular atrophy have been identified.
- Various agents, notably neurotrophic factors, show potential in preventing motoneuron death.
Conclusions:
- Differentiating apoptosis from necrosis is essential for understanding neuronal death pathways.
- Further research into motoneuron cell death mechanisms is critical for developing therapeutic strategies for neurodegenerative diseases.