Nerve Regeneration Occurs in the Absence of Apolipoprotein E in Mice

Brian Popko*, Jeffry F. Goodrum, Thomas W. Bouldin, Sunny H. Zhang, Nobuyo Maeda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

Abstract: The concentration of apolipoprotein E (apoE), a high‐affinity ligand for the low‐density lipoprotein receptor, increases dramatically in peripheral nerve following injury. This endoneurial apoE is thought to play an important role in the redistribution of lipids from the degenerating axonal and myelin membranes to the regenerating axons and myelin sheaths. The importance of apoE in nerve repair was examined using mutant mice that lack apoE. We show that at 2 and 4 weeks following sciatic nerve crush, regenerating nerves in apoE‐deficient mice were morphologically similar to regenerating nerves in control animals, indicating that apoE is not essential for peripheral nerve repair. Moreover, cholesterol synthesis was reduced in regenerating nerves of apoE‐deficient mice as much as in regenerating nerves of control animals. These results suggest that the intraneural conservation and reutilization of cholesterol following nerve injury do not require apoE.

Original languageEnglish (US)
Pages (from-to)1155-1158
Number of pages4
JournalJournal of neurochemistry
Volume60
Issue number3
DOIs
StatePublished - Mar 1993

Keywords

  • 3‐Hydroxy‐3‐methylglutaryl‐CoA reductase
  • Apolipoprotein E‐deficient mice
  • Cholesterol
  • Gene targeting
  • Wallerian degeneration

ASJC Scopus subject areas

  • Biochemistry
  • Cellular and Molecular Neuroscience

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