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Programmed Cell Death after Intracerebral Hemorrhage
Tobias Bobinger1, Petra Burkardt1, Hagen B Huttner1
1Department of Neurology, University of Erlangen-Nuremberg, Schwabachanlage 6, Erlangen 91054, Germany.
Insights
Intracerebral hemorrhage (ICH) causes significant brain injury and cell death. While preclinical studies show promise for neuroprotective treatments, clinical trials have yet to confirm efficacy, highlighting the need for further research into programmed cell death pathways.
Area of Science:
- Neuroscience
- Stroke Research
- Cellular Pathology
Background:
- Intracerebral hemorrhage (ICH) is a severe stroke type with high mortality.
- ICH causes primary mechanical brain injury and secondary injury via inflammation and cell dysfunction.
- Programmed cell death, beyond necrosis, occurs after ICH.
Purpose of the Study:
- To review current knowledge on programmed cell death pathways following ICH.
- To analyze advances in preclinical and clinical ICH research.
- To identify potential therapeutic targets for reducing ICH-related mortality and morbidity.
Main Methods:
- Comprehensive literature review of recent preclinical and clinical studies on ICH.
- Analysis of findings related to neuronal cell death mechanisms.
- Evaluation of the translation of preclinical results to clinical trials.
Main Results:
- Current ICH treatment focuses on blood pressure management and anticoagulant reversal.
- Preclinical studies suggest anti-oxidative and anti-inflammatory treatments reduce neuronal death, but clinical trials have failed.
- The timing of therapeutic intervention and non-apoptotic programmed cell death are critical considerations.
Conclusions:
- Understanding programmed cell death pathways is crucial for developing new ICH therapies.
- Preclinical findings, while not always clinically confirmed, advance our knowledge of ICH pathology.
- Further research may lead to improved treatments, reduced mortality, and better quality of life for ICH patients.
Background:
Intracerebral hemorrhage (ICH) accounts for up to 15% of all strokes and is characterized by high rates of mortality and morbidity. The post-ICH brain injury can be distinguished in 1) primary, which are caused by disruption and mechanical deformation of brain tissue due to hematoma growth and 2) secondary, which are induced by microglia activation, mitochondrial dysfunction, neurotransmitter and inflammatory mediator release. Although these events typically lead to necrosis, the occurrence of programmed cell death has also been reported after ICH.
Methods:
We reviewed recent publications describing advance in pre- and clinic ICH research.
Results:
At present, treatment of ICH patients is based on oral anticoagulant reversal, management of blood pressure and other medical complications. Several pre-clinical studies showed promising results and demonstrated that anti-oxidative and anti-inflammatory treatments reduced neuronal cell death, however, to date, all of these attempts have failed in randomized controlled clinical trials. Yet, the time frame of administration may be crucial in translation from animal to clinical studies. Furthermore, the latest pre-clinical research points toward the existence of other, apoptosisunrelated forms kinds of programmed cell death.
Conclusion:
Our review summarizes current knowledge of pathways leading to programmed cell death after ICH in addition to data from clinical trials. Some of the pre-clinical results have not yet demonstrated clinical confirmation, however they significantly contribute to our understanding of post-ICH pathology and can contribute to development of new therapeutic approaches, decreasing mortality and improving ICH patients' quality of life.
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