The application is fore renewal of a long-standing Program Project. The focus of the currently funded grant and that of the renewal is on the role of the peripheral nervous system and the spinal cord in pain mechanisms. Animal modes of human pain states are used so that experimental manipulations can be employed to provide evidence for pathophysiological mechanisms of pain of potential improvements in therapy. The theme of the Program Project is the role of inflammation in a number of clinically in a number of clinically important pain states. These include visceral, arthritic, peripheral neuropathic and central neuropathic pain. Multi-disciplinary approaches are taken in each project. Project 1 investigates the role of a newly described visceral nociceptive pathway in the dorsal column in mediating genitourinary, as well as gastrointestinal pain. Sensitization of primary visceral afferents and ventral viscerosensitive postsynaptic dorsal column and spinothalamic tract cells will be studied in vivo and in vitro. Project 2 examines the contribution of glutamate to neurogenic inflammation in the knee joint. The effects of glutamate in releasing cytokines and chemokines will be studied in vivo and also in vitro, using cultures of synoviocytes. Project 3 considers dual roles of the sympathetic nervous system in neuropathic pain. Up-regulation of adrenoreceptors, purinoceptors and NPY receptors on axotomized afferents on non-axotomized primary afferents will be investigated. The role of inflammation will be examined. Project 4 is concerned with changes in neuropeptide expression in a model of spinal cord injury, hemisection of the cord. Peptides that change include galanin, substance P, and calcitonin gene-related peptide. These are regulated in opposite directions by leukemia inhibitory factor and nerve growth factor, and so the effects of manipulations of these substances on peptide expression and nociception will be examined. The projects will be supported by 4 cores. Core A is an Administrative Core and will provide coordination of the budgets and of interactions amongst the group, consultant help with statistics and experimental design, and computer services. Core B is an Electronics Core and will provide assistance with equipment failures and with the design and construction of electronic devices that are not commercially available. Core C is an Imaging core and will support the projects by providing assistance with confocal microscopy and image analysis. C is an Imaging core and will support the projects by providing assistance with confocal microscopy and image analysis. Core D is a Neurochemistry/Molecular Biology Core and will help the projects with standardized chemical and molecular biological assays.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Program Projects (P01)
Project #
5P01NS011255-29
Application #
6642782
Study Section
National Institute of Neurological Disorders and Stroke Initial Review Group (NSD)
Program Officer
Porter, Linda L
Project Start
1974-02-01
Project End
2006-07-31
Budget Start
2003-08-01
Budget End
2004-07-31
Support Year
29
Fiscal Year
2003
Total Cost
$1,399,922
Indirect Cost
Name
University of Texas Medical Br Galveston
Department
Neurosciences
Type
Schools of Medicine
DUNS #
800771149
City
Galveston
State
TX
Country
United States
Zip Code
77555
Carter, Michael W; Johnson, Kathia M; Lee, Jun Yeon et al. (2016) Comparison of Mechanical Allodynia and Recovery of Locomotion and Bladder Function by Different Parameters of Low Thoracic Spinal Contusion Injury in Rats. Korean J Pain 29:86-95
Hammell, D C; Zhang, L P; Ma, F et al. (2016) Transdermal cannabidiol reduces inflammation and pain-related behaviours in a rat model of arthritis. Eur J Pain 20:936-48
Young, E E; Bryant, C D; Lee, S E et al. (2016) Systems genetic and pharmacological analysis identifies candidate genes underlying mechanosensation in the von Frey test. Genes Brain Behav 15:604-15
Yuan, Su-Bo; Ji, Guangchen; Li, Bei et al. (2015) A Wnt5a signaling pathway in the pathogenesis of HIV-1 gp120-induced pain. Pain 156:1311-9
Ji, Guangchen; Li, Zhen; Neugebauer, Volker (2015) Reactive oxygen species mediate visceral pain-related amygdala plasticity and behaviors. Pain 156:825-36
Neugebauer, Volker (2015) Amygdala pain mechanisms. Handb Exp Pharmacol 227:261-84
Hassler, Shayne N; Johnson, Kathia M; Hulsebosch, Claire E (2014) Reactive oxygen species and lipid peroxidation inhibitors reduce mechanical sensitivity in a chronic neuropathic pain model of spinal cord injury in rats. J Neurochem 131:413-7
Ji, Guangchen; Neugebauer, Volker (2014) CB1 augments mGluR5 function in medial prefrontal cortical neurons to inhibit amygdala hyperactivity in an arthritis pain model. Eur J Neurosci 39:455-66
Medina, Georgina; Ji, Guangchen; Grégoire, Stéphanie et al. (2014) Nasal application of neuropeptide S inhibits arthritis pain-related behaviors through an action in the amygdala. Mol Pain 10:32
Kiritoshi, Takaki; Sun, Hao; Ren, Wenjie et al. (2013) Modulation of pyramidal cell output in the medial prefrontal cortex by mGluR5 interacting with CB1. Neuropharmacology 66:170-8

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