Caspases and neuroprotection
1Department of Biochemistry and Molecular Biology, Merck, Sharp and Dohme Neuroscience Research Centre, Terlings Park, Eastwick Road, Harlow, Essex, CM20 2QR, UK. james_bilsland@merck.com
Abstract:
Apoptotic cell death has been implicated in the pathogenesis of both acute and chronic neurodegenerative disorders. The caspase family of cysteine proteases are involved both in the initiation and final execution of apoptosis. Inhibition of the caspase family prevents cell death in a number of models of neurodegenerative cell death in vivo and in vitro. This sparing of neurons does not always correlate with long-term functional recovery, possibly due to the limitations of the available inhibitors. In this review, the evidence for a neuroprotective role of caspase inhibition in models of Parkinson's disease and cerebral ischemia is critically evaluated.
Insights
Caspase inhibition shows neuroprotective effects in models of Parkinson's disease and cerebral ischemia. However, improved inhibitors are needed for better long-term functional recovery in neurodegenerative disorders.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Apoptotic cell death contributes to neurodegenerative diseases.
- Caspase proteases are key mediators of apoptosis.
- Current caspase inhibitors offer limited functional recovery.
Purpose of the Study:
- To review the neuroprotective role of caspase inhibition.
- To evaluate evidence in Parkinson's disease and cerebral ischemia models.
Main Methods:
- Literature review of in vivo and in vitro studies.
- Critical evaluation of caspase inhibition efficacy.
- Analysis of neuroprotection versus functional recovery.
Main Results:
- Caspase inhibition prevents neuronal death in neurodegenerative models.
- Neuronal sparing does not always equate to functional recovery.
- Limitations of current inhibitors impact long-term outcomes.
Conclusions:
- Caspase inhibition is a promising neuroprotective strategy.
- Further development of caspase inhibitors is crucial for functional recovery.
- Targeting caspases holds potential for treating neurodegenerative conditions.
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