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Oncotic Cell Death in Stroke.

Kep Yong Loh1,2, Ziting Wang3, Ping Liao4,5,6

  • 1Duke-NUS Medical School, Singapore, Singapore.

Reviews of Physiology, Biochemistry and Pharmacology
|December 6, 2018
PubMed
Summary
This summary is machine-generated.

Oncotic cell death, a major cell death mechanism in ischemic stroke, involves ion imbalance and water influx causing cell swelling. Inhibiting this uncontrolled ion flux offers a promising neuroprotection strategy for stroke treatment.

Keywords:
Cerebral oedemaIon channelsOncosisStroke

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Pathology

Background:

  • Oncotic cell death is a primary cell death mechanism in ischemic stroke affecting neurons, glia, and vascular endothelial cells.
  • Energy depletion in stroke disrupts ionic homeostasis, leading to ion imbalance and cell swelling.
  • This process contributes to both cytotoxic and vasogenic edema, exacerbating brain damage.

Purpose of the Study:

  • To review the role of oncotic cell death in ischemic stroke pathology.
  • To summarize key pathways of water, sodium (Na+), chloride (Cl-), and potassium (K+) movement in the central nervous system (CNS).
  • To highlight the therapeutic potential of targeting ionic flux for neuroprotection in stroke.

Main Methods:

  • Literature review focusing on oncotic cell death mechanisms in stroke.
  • Analysis of ion and water transport pathways across CNS cell membranes.
  • Examination of the role of these pathways in stroke pathobiology.

Main Results:

  • Oncosis results from energy depletion, ionic pump failure, and transmembrane osmotic gradients.
  • Imbalances in Na+, Cl-, and K+ flux drive water into cells, causing swelling and contributing to cerebral edema.
  • Oncotic cell death of vascular endothelial cells disrupts the blood-brain barrier (BBB).

Conclusions:

  • Uncontrolled ionic flux is a critical factor in stroke-induced cell death and cerebral edema.
  • Targeting ion and water transport mechanisms presents a novel neuroprotective strategy for ischemic stroke.
  • Understanding these pathways is crucial for developing effective stroke therapies.