Article ; Online: NeuroHeal Treatment Alleviates Neuropathic Pain and Enhances Sensory Axon Regeneration.
2020 Volume 9, Issue 4
Abstract: Peripheral nerve injury (PNI) leads to the loss of motor, sensory, and autonomic functions, and often triggers neuropathic pain. During the last years, many efforts have focused on finding new therapies to increase axonal regeneration or to alleviate ... ...
Abstract | Peripheral nerve injury (PNI) leads to the loss of motor, sensory, and autonomic functions, and often triggers neuropathic pain. During the last years, many efforts have focused on finding new therapies to increase axonal regeneration or to alleviate painful conditions. Still only a few of them have targeted both phenomena. Incipient or aberrant sensory axon regeneration is related to abnormal unpleasant sensations, such as hyperalgesia or allodynia. We recently have discovered NeuroHeal, a combination of two repurposed drugs; Acamprosate and Ribavirin. NeuroHeal is a neuroprotective agent that also enhances motor axon regeneration after PNI. In this work, we investigated its effect on sensory fiber regeneration and PNI-induced painful sensations in a rat model of spare nerve injury and nerve crush. The follow up of the animals showed that NeuroHeal treatment reduced the signs of neuropathic pain in both models. Besides, the treatment favored sensory axon regeneration, as observed in dorsal root ganglion explants. Mechanistically, the effects observed in vivo may improve the resolution of cell-protective autophagy. Additionally, NeuroHeal treatment modulated the P2X4-BDNF-KCC2 axis, which is an essential driver of neuropathic pain. These data open a new therapeutic avenue based on autophagic modulation to foster endogenous regenerative mechanisms and reduce the appearance of neuropathic pain in PNI. |
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MeSH term(s) | Acamprosate/pharmacology ; Acamprosate/therapeutic use ; Animals ; Autophagy/drug effects ; Axons/drug effects ; Axons/pathology ; Brain-Derived Neurotrophic Factor/metabolism ; Calcium-Binding Proteins/metabolism ; Drug Combinations ; Female ; Hyperalgesia/complications ; Hyperalgesia/drug therapy ; Hyperalgesia/physiopathology ; Male ; Microfilament Proteins/metabolism ; Motor Neurons/drug effects ; Motor Neurons/pathology ; Nerve Regeneration/drug effects ; Neuralgia/complications ; Neuralgia/drug therapy ; Neuralgia/physiopathology ; Neurites/drug effects ; Neurites/metabolism ; Neurogenesis/drug effects ; Peripheral Nerves/drug effects ; Peripheral Nerves/pathology ; Peripheral Nerves/physiopathology ; Rats, Sprague-Dawley ; Receptors, Purinergic P2X4/metabolism ; Ribavirin/pharmacology ; Ribavirin/therapeutic use ; Sensory Thresholds/drug effects ; Spinal Cord Dorsal Horn/drug effects ; Spinal Cord Dorsal Horn/metabolism ; Symporters/metabolism ; K Cl- Cotransporters |
Chemical Substances | Aif1 protein, rat ; Brain-Derived Neurotrophic Factor ; Calcium-Binding Proteins ; Drug Combinations ; Microfilament Proteins ; Receptors, Purinergic P2X4 ; Symporters ; acamprosate, ribavirin drug combination ; Ribavirin (49717AWG6K) ; Acamprosate (N4K14YGM3J) |
Language | English |
Publishing date | 2020-03-27 |
Publishing country | Switzerland |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2661518-6 |
ISSN | 2073-4409 ; 2073-4409 |
ISSN (online) | 2073-4409 |
ISSN | 2073-4409 |
DOI | 10.3390/cells9040808 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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