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Repetitive neonatal pain increases spinal cord DNA methylation of the µ-opioid receptor.
Pediatr Res
January 2025
Department of Psychiatry and Neuropsychology, Mental Health and Neuroscience Research Institute, Maastricht University, Maastricht, the Netherlands.
Background: Repetitive neonatal painful procedures experienced in the neonatal intensive care unit (NICU) are known to alter the development of the nociceptive system and have long-lasting consequences. Recent evidence indicates that NICU stay affects the methylation of the opioid receptor mu 1 encoding gene (Mor-1). Additionally, a preclinical model of neonatal procedural pain established lower adult post-operative MOR-1 levels in the spinal cord.
View Article and Find Full Text PDFInvolvement of a central amygdaloid nucleus-lateral habenular nucleus pathway in the processing of formalin-induced pain.
Neuroscience
January 2025
Department of Anatomy, Histology and Embryology, K. K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an 710032, China; Innovation Researh Institute, Xijing Hopsital, Air Force Medical University, Xi'an 710032, China. Electronic address:
The central amygdaloid nucleus (CeA) and the lateral habenular nucleus (LHb) are essential nuclei playing modulatory roles in encoding noxious stimuli. Their interaction has recently been demonstrated in chronic pain-induced depression. However, little is known about the CeA-LHb pathway in a formalin-induced pain model.
View Article and Find Full Text PDFDifferential Neuronal Activation of Nociceptive Pathways in Neuropathic Pain After Spinal Cord Injury.
Cell Mol Neurobiol
January 2025
Department of Neurology, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, 430030, China.
Neuropathic pain, a prevalent complication following spinal cord injury (SCI), severely impairs the life quality of patients. No ideal treatment exists due to incomplete knowledge on underlying neural processes. To explore the SCI-induced effect on nociceptive circuits, the protein expression of c-Fos was analyzed as an indicator of neuronal activation in a rat contusion model exhibiting below-level pain.
View Article and Find Full Text PDFMicroiontophoretic Application of Dynorphin in Dental Pain: Excitatory or Inhibitory Effects.
J Pain Res
January 2025
Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, Korea.
Background: The tooth exhibits increased sensitivity to noxious stimuli due to the dense innervation of thin myelinated Aδ fibers and unmyelinated C fibers within the dental pulp. While prior research has identified dynorphin expression in layers I-II of the dorsal horn across the spinal cord in various pain models, its functional role in trigeminal nociception, including tooth pain, remains underexplored. This study examines the potential role of dynorphin in the nociceptive processing of dental stimuli.
View Article and Find Full Text PDFSatellite Observations of Atmospheric Ammonia Inequalities Associated with Industrialized Swine Facilities in Eastern North Carolina.
Environ Sci Technol
January 2025
Department of Environmental Sciences, University of Virginia, Charlottesville, Virginia 22904, United States.
Industrialized swine facilities adversely affect the health and well-being of Eastern North Carolina residents in the U.S. and are an issue of environmental racism.
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