What question did this study set out to answer?

To determine whether endogenous glutathione levels and oxidative stress influence Wallerian degeneration and thermal hyperalgesia following chronic constriction injury to the sciatic nerve.

August 1, 1998Pain

Wallerian degeneration and hyperalgesia after peripheral nerve injury are glutathione-dependent

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Authors

RWRochelle WagnerDartmouth College HHHeidi M. HeckmanVA San Diego Healthcare System RMRobert R. MyersUniversidad Mayor de San Andrés

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Implication

Experimental study reveals that dietary N-acetyl-cysteine diminishes nerve degeneration and pain hypersensitivity via glutathione, suggesting a pre-emptive therapy for surgical nerve trauma.

Key Points

To determine whether endogenous glutathione levels and oxidative stress influence Wallerian degeneration and thermal hyperalgesia following chronic constriction injury to the sciatic nerve.
Induced chronic constriction injury (CCI) of the sciatic nerve in an experimental animal model.
Administered dietary N-acetyl-cysteine (NAC) starting one day prior to or at intervals following CCI, with a subset receiving simultaneous glutathione synthesis inhibitors.
Quantified myelinated nerve fiber degeneration through morphometry, assessed thermal hyperalgesia behaviorally, and evaluated glutathione status via hemeoxygenase-1 (hsp32) immunoreactivity.
Pre-injury dietary supplementation with NAC significantly reduced Wallerian degeneration of myelinated fibers, diminished thermal hyperalgesia, and elevated nerve glutathione levels.
Co-administration of a glutathione synthesis inhibitor abolished the protective effects of NAC against neuropathology and hyperalgesia, confirming a glutathione-dependent mechanism.
Post-injury administration of NAC consistently decreased thermal hyperalgesia, though the improvement did not achieve statistical significance.

Cite This Study

Wagner et al. (1998) studied this question.

synapsesocial.com/papers/6a70d10bfebe604dd70995ba https://doi.org/10.1016/s0304-3959(98)00091-8

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Implication

Experimental study reveals that dietary N-acetyl-cysteine diminishes nerve degeneration and pain hypersensitivity via glutathione, suggesting a pre-emptive therapy for surgical nerve trauma.

Wallerian degeneration and hyperalgesia after peripheral nerve injury are glutathione-dependent

Discussion

Member takes

Implication

Key Points

Cite This Study

Wallerian degeneration and hyperalgesia after peripheral nerve injury are glutathione-dependent

Discussion

Member takes

Implication

Key Points

Cite This Study

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