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Heme oxygenase-1, heme oxygenase-2 and biliverdin reductase in peripheral ganglia from rat, expression and plasticity

Publiceringsår: 2000
Språk: Engelska
Sidor: 821-829
Publikation/Tidskrift/Serie: Neuroscience
Volym: 95
Nummer: 3
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier


The expression of inducible and constitutive heme oxygenase and biliverdin reductase was studied in normal and cultured peripheral ganglia from adult rats, using immunocytochemistry and in situ hybridization. Dramatic changes were induced by one to two days' culturing of dorsal root ganglia, nodose ganglia, otic ganglia, sphenopalatine ganglia and superior cervical ganglia. An up-regulation of inducible heme oxygenase was found in satellite cells of the cultured nodose ganglia, dorsal root ganglia, sphenopalatine ganglia and otic ganglia, whereas only a few satellite cells in the superior cervical ganglia responded with an increase in inducible heme oxygenase immunoreactivity. In the superior cervical ganglia inducible heme oxygenase also appeared in a subpopulation of macrophages. During culturing, expression of inducible heme oxygenase immunoreactivity also increased in axons and in nerve cell bodies. In situ hybridization corroborated the immunocytochemical findings, revealing a strong up-regulation of inducible heme oxygenase messenger RNA in satellite cells, and less pronounced up-regulation in nerve cell bodies. Constitutive heme oxygenase immunoreactivity was found in most neurons in all of the ganglia studied. No significant changes in constitutive heme oxygenase immunoreactivity could be observed in cultured ganglia. Biliverdin reductase immunoreactivity was barely detectable in any of the normal ganglia; however, after culturing it appeared in axons, single nerve cell bodies and nerve cell nuclei. The results show that inducible heme oxygenase is up-regulated in peripheral ganglia after axonal injury, and suggest a role for carbon monoxide in cellular signaling and a requirement for the antioxidant (bilirubin) during the regeneration process.


  • Neurosciences
  • heme oxygenase
  • CO
  • peripheral ganglia
  • regeneration
  • in situ hybridization
  • immunocytochemistry
  • biliverdin reductase


  • ISSN: 1873-7544

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