Decrease of enkephalins in cerebellum during Wobbler mouse motoneuron disease

Kin Lam Yung, F. Tang, L. L. Vacca-Galloway*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

13 Citations (Scopus)


The Wobbler mouse possesses an inherited motoneuron disease, which expresses itself primarily at cervical spinal levels and in cranial nmotor nuclei. Cell degeneration is sporatic and negligible in other motor regions of the brain (e.g., cerebellum, corpus striatum). However, enkephalin concentrations are consistently lower in the Wobbler cerebellum throughout the motoneuron disease, whereas susbtance P concentrations are significantly higher late in the disease compared with the normal phenotype littermates. The data imply that early changes in enkephalin (aslo shown for leucine enkephalin in the spinal cord and brainstem) may be important to the etiology of the Wobbler disorder. Like the late increase of substance P, this may reflect a yet-to-be discribed response to parent cell degeneration in the raphe nuclei. TRH remained unchanged in Wobbler cerebellum and corpus striatum, wherein the other peptides studied herein also maintained similar concentrations to the normal phenotype littermates.
Original languageEnglish
Pages (from-to)175-180
Number of pages6
JournalBrain Research
Issue number1
Publication statusPublished - 18 Dec 1992

User-Defined Keywords

  • Radioimmunoassay
  • Wobbler mouse
  • Motoneuron disease
  • Cerebellum
  • Corpus striatum
  • Thyrotropin-releasing hormone
  • Substance P
  • Methionine enkephalin
  • Leucine enkephalin


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