Cell Death Mechanisms in Stroke and Novel Molecular and Cellular Treatment Options - PubMed (original) (raw)

Review

Cell Death Mechanisms in Stroke and Novel Molecular and Cellular Treatment Options

Emine Sekerdag et al. Curr Neuropharmacol. 2018.

Abstract

As a result of ischemia or hemorrhage, blood supply to neurons is disrupted which subsequently promotes a cascade of pathophysiological responses resulting in cell loss. Many mechanisms are involved solely or in combination in this disorder including excitotoxicity, mitochondrial death pathways, and the release of free radicals, protein misfolding, apoptosis, necrosis, autophagy and inflammation. Besides neuronal cell loss, damage to and loss of astrocytes as well as injury to white matter contributes also to cerebral injury. The core problem in stroke is the loss of neuronal cells which makes recovery difficult or even not possible in the late states. Acute treatment options that can be applied for stroke are mainly targeting re-establishment of blood flow and hence, their use is limited due to the effective time window of thrombolytic agents. However, if the acute time window is exceeded, neuronal loss starts due to the activation of cell death pathways. This review will explore the most updated cellular death mechanisms leading to neuronal loss in stroke. Ischemic and hemorrhagic stroke as well as subarachnoid hemorrhage will be debated in the light of cell death mechanisms and possible novel molecular and cellular treatment options will be discussed.

Keywords: Ischemic stroke; apoptosis; autophagy; hemorrhagic stroke; necrosis; neuroprotective therapies; pyroptosis..

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Figures

Fig. (1)

Fig. (1)

The axon terminal of a neuron with membrane transporters and intracellular components which are prone to excitotoxicity.

Fig. (2)

Fig. (2)

Schematic overview of different and complex cell death pathways involved in stroke.

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