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Neuroprotective Results of Valproic Acid in a Rat Mannequin of Cauda Equina Damage.

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Neuroprotective Results of Valproic Acid in a Rat Mannequin of Cauda Equina Damage.

World Neurosurg. 2017 Dec;108:128-136

Authors: Kong QJ, Wang Y, Liu Y, Solar JC, Xu XM, Solar XF, Shi JG

Summary
BACKGROUND: Histone deacetylase inhibitors, together with valproic acid (VPA), are promising therapeutic interventions in neurological problems and play an essential function in synaptic exercise and neuronal perform.
METHODS: A complete of 30 rats have been randomly allotted to three teams: sham, management, and VPA. The rats within the VPA and management teams acquired laminectomy on the L4 stage of the vertebrae and silicone gel implantation into the epidural areas L5 and L6. Rats within the sham group solely acquired laminectomy on the L4 stage of vertebrae with none implantation. VPA (300 mg/kg in saline) was administered 2 hours earlier than the surgical procedure. After the surgical procedure, the VPA group acquired additional VPA injections at 300 mg/kg twice a day for 1 week. The identical quantity of saline was injected within the management group. Neurobehavioral assessments utilizing the Basso, Beattie, Bresnahan scale and the indirect board check have been carried out for 1 week beginning at 2 hours earlier than surgical procedure as much as day 7 after surgical procedure. At day 7 after surgical procedure, tissues from the compressed cauda equina (L5-L6) have been subjected to hematoxylin and eosin, luxol quick blue, or immunofluorescence staining, whereas the terminal deoxynucleotidyl transferase-mediated biotinylated UTP nick-end label assay staining was carried out on the tissue from the dorsal root ganglions and the lumbar phase of the spinal wire proximal to the compressed cauda equina (L5-L6).
RESULTS: The behavioral outcomes prompt a big enchancment within the decrease limb motor perform within the VPA group in contrast with controls (P < zero.05). Moreover, histologic evaluation revealed a big discount in nerve fibers displaying Wallerian degeneration and demyelinating lesions within the VPA group, along with an elevated myelination in contrast with the management group (P < zero.05). The terminal deoxynucleotidyl transferase-mediated biotinylated UTP nick-end label assay staining revealed a big lower within the variety of apoptotic neurons within the spinal wire anterior horn and dorsal root ganglions within the VPA group in contrast with controls (P < zero.05).
CONCLUSIONS: Our information demonstrated that VPA may alleviate cauda equina damage, cut back apoptotic cells, and enhance motor restoration, suggesting a neuroprotective impact in acute cauda equina syndrome.

PMID: 28867325 [PubMed – indexed for MEDLINE]

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