Erythropoietin protects cultured cortical neurons, but not astroglia, from hypoxia and AMPA toxicity

Neurosci Lett. 2000 Sep 1;290(3):213-5. doi: 10.1016/s0304-3940(00)01361-6.

Abstract

In addition to its better-known hemopoietic action, erythropoietin (Epo) has neurotrophic properties and neuroprotective effects in some models of hypoxic-ischemic injury. To define further the cellular mechanisms underlying neuroprotection by Epo, we studied the effects of Epo on hypoxia with glucose deprivation in cultured rat cortical neurons and astroglia and on exposure to excitotoxins in cultured rat cortical neurons. Epo (30 pM) reduced neuronal, but not astroglial, cell death from hypoxia with glucose deprivation, and also attenuated the neurotoxic effect of (+/-)-alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA), but not other excitotoxins. Epo appears to protect against cerebral ischemia through a direct effect on neurons that may be mediated in part by AMPA receptors.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Astrocytes / drug effects*
  • Astrocytes / metabolism
  • Astrocytes / pathology
  • Cell Culture Techniques
  • Cell Survival / drug effects
  • Cell Survival / physiology
  • Cerebral Cortex / drug effects*
  • Cerebral Cortex / pathology
  • Cerebral Cortex / physiopathology
  • Disease Models, Animal
  • Drug Interactions / physiology
  • Embryo, Mammalian
  • Erythropoietin / metabolism
  • Erythropoietin / pharmacology*
  • Glucose / deficiency
  • Hypoxia, Brain / drug therapy*
  • Hypoxia, Brain / pathology
  • Hypoxia, Brain / physiopathology
  • Neurons / drug effects*
  • Neurons / metabolism
  • Neurons / pathology
  • Neuroprotective Agents / pharmacology
  • Neurotoxins / antagonists & inhibitors*
  • Rats
  • Rats, Sprague-Dawley
  • alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid / toxicity*

Substances

  • Neuroprotective Agents
  • Neurotoxins
  • Erythropoietin
  • alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid
  • Glucose