Role of immunity in recovery from a peripheral nerve injury

Virginia M. Sanders, Kathryn Jones

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Motoneurons are large multipolar neurons with cell bodies located in the brainstem and spinal cord, and peripheral axons ending in neuromuscular junctions. Peripheral nerve damage, outside the blood-brain barrier (BBB), results in both retrograde changes centrally and anterograde changes along the length of the axon distal to the lesion site. Often, peripheral nerve damage is accompanied by motoneuron cell death, unless axon regrowth and target reconnection occur so that the target muscle can provide essential neurotrophic factors. It is essential that the motoneuron cell body survive during the process of reconnection so that the source for essential axon-rebuilding proteins is assure(of a fact)/ensured (results). A commonly used peripheral injury paradigm is that of facial nerve transection at its exit from the skull through the stylomastoid foramen so that nerve reconnection to the facial muscle tissue is permanently prevented. This model system allows for the study of the mechanisms responsible for maintaining facial motoneuron (FMN) cell body survival, without the complicating factor of axon regrowth. Injury to the nervous system results in an immune response that is either neuroprotective or neurodestructive. Findings suggest that FMN survival after facial nerve axotomy depends on the action of a CD4+ T cell that is initially activated peripherally and subsequently reactivated centrally. This review will summarize what is known about the neural-immune players involved in FMN survival and repair, so that the pharmacological manipulation of this interaction will one day become evident for the clinical management of neurological situations.

Original languageEnglish (US)
Pages (from-to)11-19
Number of pages9
JournalJournal of NeuroImmune Pharmacology
Volume1
Issue number1
DOIs
StatePublished - Mar 2006
Externally publishedYes

Fingerprint

Peripheral Nerve Injuries
Motor Neurons
Immunity
Axons
Facial Nerve
Peripheral Nerves
Facial Muscles
Nervous System Trauma
Axotomy
Muscles
Neuromuscular Junction
Nerve Growth Factors
Blood-Brain Barrier
Skull
Brain Stem
Cell Survival
Spinal Cord
Cell Death
Pharmacology
T-Lymphocytes

Keywords

  • CD4 T cell
  • Facial motoneuron
  • Motoneuron survival
  • Nerve injury
  • Nerve repair
  • Neuroimmunology

ASJC Scopus subject areas

  • Pharmacology
  • Immunology and Allergy
  • Immunology
  • Neuroscience (miscellaneous)

Cite this

Role of immunity in recovery from a peripheral nerve injury. / Sanders, Virginia M.; Jones, Kathryn.

In: Journal of NeuroImmune Pharmacology, Vol. 1, No. 1, 03.2006, p. 11-19.

Research output: Contribution to journalArticle

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