Histone deacetylase inhibitors (HDACIs) interfere with the epigenetic process of histone acetylation and are known to have analgesic properties in models of chronic inflammatory pain. The aim of this study was to determine whether these compounds could also affect neuropathic pain. Different class I HDACIs were delivered intrathecally into rat spinal cord in models of traumatic nerve injury and antiretroviral drug-induced peripheral neuropathy (stavudine, d4T). Mechanical and thermal hypersensitivity was attenuated by 40% to 50% as a result of HDACI treatment, but only if started before any insult. The drugs globally increased histone acetylation in the spinal cord, but appeared to have no measurable effects in relevant dorsal root ganglia in this treatment paradigm, suggesting that any potential mechanism should be sought in the central nervous system. Microarray analysis of dorsal cord RNA revealed the signature of the specific compound used (MS-275) and suggested that its main effect was mediated through HDAC1. Taken together, these data support a role for histone acetylation in the emergence of neuropathic pain.
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http://dx.doi.org/10.1016/j.pain.2013.05.021 | DOI Listing |
J Rehabil Med
January 2025
Centre for Interdisciplinary Rehabilitation Research of Greater Montreal (CRIR) - Centre Intégré Universitaire de Santé et de Services Sociaux du Centre-Sud-de-l'Île-de-Montréal, Montréal, Québec, Canada; School of Rehabilitation, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada.
Objective: To determine the strength of the association between residual limb neuropathic pain intensity and the number of neuromas, prosthetic, functional, and participation outcomes, and assess whether ultrasound (US) biomarkers of neuromas differ between pain intensities.
Design: Cross-sectional study.
Subjects: Twenty-two participants with a transtibial amputation for more than 12 months, with and without residual limb neuropathic pain.
Sci Rep
January 2025
Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou, China.
The potential role of hydrogen sulfide (HS) in the modulation of neuropathic pain is increasingly recognized. This study investigated the therapeutic effect of intraperitoneal injection of the HS donor sodium hydrosulfide (NaHS) on neuropathic pain. Utilizing the spared nerve injury (SNI) model in mice, the research investigates the role of astrocytes and the excitatory neurotransmitter glutamate in chronic pain.
View Article and Find Full Text PDFJ Physiol Sci
January 2025
Center for Medical Sciences, International University of Health and Welfare, 324-8501, Otawara, Tochigi, Japan; Bio-Laboratory, Foundation for Advancement of International Science, 305-0821, Tsukuba, Ibaraki, Japan. Electronic address:
Previously, we found that serotonin (5-HT) release in the central nucleus of the amygdala (CeA) of anesthetized rats decreases in response to innocuous stroking of the skin, irrespective of stimulus laterality, but increases in response to noxious pinching applied to a hindlimb contralateral to the 5-HT measurement site. The aim of the present study was to determine whether intra-CeA 5-HT release responses to cutaneous stimulation were altered in an animal model of neuropathic pain induced by ligation of the left L5 spinal nerve. In anesthetized neuropathic pain model rats, stroking of the left hindlimb increased 5-HT release in the CeA, whereas stroking of the right hindlimb decreased it.
View Article and Find Full Text PDFJ Tissue Viability
January 2025
Discipline of Podiatric Medicine, School of Health Sciences, University of Galway, Galway, H91 TK33, Ireland.
Background: Diabetic foot ulcers (DFUs) are a prevalent complication of diabetes. Individuals with DFUs can experience wound-related pain, which could be nociceptive and/or neuropathic in origin, which adversely affects health-related quality of life (HRQoL).
Aim: To determine the prevalence and characteristics of DFU-related pain and its impact on HRQoL in community-dwelling individuals with active DFUs.
J Hazard Mater
January 2025
School of Environmental Science and Engineering, Nanjing Tech University, Jiangsu 211816, China; Sino-Portuguese Joint International Laboratory of Aquatic Toxicology, Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu Province 211816, China. Electronic address:
Gabapentin (GBP), a pharmaceutical widely used for seizures and neuropathic pain, has emerged as a contaminant in global aquatic environments, raising concerns about its ecological impact. This study investigated the effects of environmentally relevant concentrations of GBP (0, 1, 10, 1000 μg/L) on visual development in zebrafish (Danio rerio). Behavioral assays showed that GBP exposure enhanced light sensitivity, as indicated by a significant increase in total travel distance (TTD) in all exposure groups compared to controls.
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