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Astrocytes and ischemic tolerance.

Yuri Hirayama1, Schuichi Koizumi1

  • 1Department of Neuropharmacology, Interdisciplinary Graduate School of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi 409-3898, Japan.

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|December 12, 2017
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Summary

Mild brain injury can trigger protective mechanisms, known as ischemic tolerance, offering neuroprotection against stroke. Recent research highlights the crucial role of glial cells, particularly astrocytes, in this protective response.

Keywords:
AstrocytesGliaHIF-1αIschemic toleranceNeuroprotectionPreconditioning

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Pathology

Background:

  • Ischemic tolerance, or preconditioning, is an endogenous neuroprotective mechanism against brain ischemia and stroke.
  • Most research has focused on neurons, overlooking the role of glial cells in ischemic tolerance.
  • Glial cells, especially astrocytes, are vital for brain homeostasis and neuronal protection.

Purpose of the Study:

  • To review the mechanisms of glial-mediated ischemic tolerance.
  • To explore the role of glial cells, particularly astrocytes, in inducing ischemic tolerance.
  • To discuss the therapeutic potential of glial-mediated ischemic tolerance.

Main Methods:

  • Review of existing literature on ischemic tolerance and glial cell function.
  • Analysis of studies demonstrating glial cell involvement in preconditioning.
  • Discussion of cross-ischemic preconditioning, including chemical treatments affecting the immune system.

Main Results:

  • Glial cells, especially astrocytes, play a pivotal role in inducing ischemic tolerance.
  • Glial-mediated ischemic tolerance provides robust and long-lasting neuroprotection.
  • Chemical preconditioning, impacting the immune system, strongly induces ischemic tolerance, implicating glial cells.

Conclusions:

  • Glial cells are critical mediators of ischemic tolerance, offering significant neuroprotection.
  • Understanding glial-mediated mechanisms opens new therapeutic avenues for stroke treatment.
  • Further research is needed to fully elucidate the benefits, challenges, and applications of glial-mediated ischemic tolerance.