PMID- 30785087 OWN - NLM STAT- MEDLINE DCOM- 20190827 LR - 20230308 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 70 DP - 2019 May TI - Inhibitory effect of valproate sodium on pain behavior in diabetic mice involves suppression of spinal histone deacetylase 1 and inflammatory mediators. PG - 16-27 LID - S1567-5769(18)31282-7 [pii] LID - 10.1016/j.intimp.2019.01.050 [doi] AB - Anti-epileptic medications are included in the international guidelines for managing neuropathic pain. Valproate sodium (VPS) was recently described as "the forgotten analgesic" and has been reported to relief pain in various models of neuropathic pain. Some studies reported anti-inflammatory and histone deacetylase 1 (HDA1) inhibitory properties for sodium valproate. The aim of the current study was to investigate the modulatory effect of VPS on pain behavior and inflammatory reactions in alloxan-induced diabetic neuropathy focusing on HDA1 inhibition and glia reactivity. 28 Male Swiss albino mice were allocated into four groups, (1) vehicle group, (2) alloxan-diabetic group, (3 & 4) alloxan+VPS (25 or 50 mg/kg) groups. VPS was given daily for 5 weeks by oral gavage. Pain behavior demonstrated increased allodynia (von-Frey filaments) and hyperalgesia (hot-plate test) in alloxan-diabetic mice that was reduced significantly by at least one of VPS doses. Sciatic nerves in diabetic mice showed increased histopathology score, increased silver staining for the nerves-indicating myelopathy- and a decrease in immunostaining for nerve growth factor. Spinal cord of diabetic mice showed greater histopathologic score, increased CD11b and glia fibrillary acidic protein (GFAP) immunostaining than vehicle treated mice. Molecular investigations highlighted greater content of spinal histone deacetylases, tumor necrosis factor-alpha (TNF-alpha) and interlukin-1beta (IL1beta) that were favorably modified by VPS. Overall, the current data confirmed that the pain killing and anti-inflammatory activity of VPS is at least partly mediated through inhibition of spinal HDA1 and glia reactivity. These findings support the view of inviting antiepileptics for treating neuropathies. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Elsherbiny, Nehal M AU - Elsherbiny NM AD - Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia; Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt. FAU - Ahmed, Eman AU - Ahmed E AD - Clinical Pharmacology Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt. FAU - Kader, Ghada Abdel AU - Kader GA AD - Department of Anatomy and Embryology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt. FAU - Abdel-Mottaleb, Yousra AU - Abdel-Mottaleb Y AD - Department of Pharmacology, Toxicology & Biochemistry, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo, Egypt. FAU - ElSayed, Mohamed H AU - ElSayed MH AD - Department of Physiology, Faculty of Medicine, Ain Shams University, Cairo, Egypt. FAU - Youssef, Amal M AU - Youssef AM AD - Department of Physiology, College of Medicine, Taibah University, Medinah, Saudi Arabia; Department of Physiology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt. FAU - Zaitone, Sawsan A AU - Zaitone SA AD - Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt. Electronic address: szaitone@ut.edu.sa. LA - eng PT - Journal Article DEP - 20190218 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Analgesics) RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 614OI1Z5WI (Valproic Acid) RN - EC 3.5.1.98 (Histone Deacetylase 1) SB - IM EIN - Int Immunopharmacol. 2023 Apr;117:109807. PMID: 36890025 MH - Analgesics/*therapeutic use MH - Animals MH - Behavior, Animal MH - Cells, Cultured MH - Cytokines/metabolism MH - Diabetes Complications/chemically induced/*drug therapy MH - Disease Models, Animal MH - Down-Regulation MH - Histone Deacetylase 1/*metabolism MH - Humans MH - Inflammation Mediators/metabolism MH - Male MH - Mice MH - Neuralgia/chemically induced/*drug therapy MH - Neuroglia/*physiology MH - Spinal Cord/*metabolism MH - Valproic Acid/*therapeutic use OTO - NOTNLM OT - Alloxan diabetic neuropathy OT - Glia reactivity OT - Histone deacetylase OT - Mouse OT - Valproate sodium EDAT- 2019/02/21 06:00 MHDA- 2019/08/28 06:00 CRDT- 2019/02/21 06:00 PHST- 2018/12/28 00:00 [received] PHST- 2019/01/23 00:00 [revised] PHST- 2019/01/30 00:00 [accepted] PHST- 2019/02/21 06:00 [pubmed] PHST- 2019/08/28 06:00 [medline] PHST- 2019/02/21 06:00 [entrez] AID - S1567-5769(18)31282-7 [pii] AID - 10.1016/j.intimp.2019.01.050 [doi] PST - ppublish SO - Int Immunopharmacol. 2019 May;70:16-27. doi: 10.1016/j.intimp.2019.01.050. Epub 2019 Feb 18.