resiniferatoxin/hypersensitivity

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Antinociceptive effects of AS1069562, the (+)-isomer of indeloxazine, on spinal hypersensitivity induced by intrathecal injection of prostaglandin in mice: comparison with duloxetine and amitriptyline.

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The (+)-isomer of indeloxazine AS1069562 exerts multiple pharmacological actions including the inhibition of serotonin (5-HT) and norepinephrine reuptake and analgesia in experimental animal pain models. Here, we evaluated the antinociceptive effects of AS1069562 and the antidepressants duloxetine

Lesioning of TRPV1 expressing primary afferent neurons prevents PAR-2 induced motility, but not mechanical hypersensitivity in the rat colon.

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BACKGROUND Proteinase activated receptor 2 (PAR-2) is expressed by many neurons in the colon, including primary afferent neurons that co-express transient receptor potential vanilloid 1 (TRPV1). Activation of PAR-2 receptors was previously found to enhance colonic motility, increase secretion and

Urodynamic effects of intravesical resiniferatoxin and capsaicin in conscious rats with and without outflow obstruction.

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OBJECTIVE The urodynamic effects of intravesical resiniferatoxin and capsaicin were investigated in rats. METHODS Continuous cystometry was performed in conscious, female Sprague-Dawley rats with and without outflow obstruction. RESULTS Intravesical instillation of resiniferatoxin facilitated

Sensory fibres expressing capsaicin receptor TRPV1 in patients with rectal hypersensitivity and faecal urgency.

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BACKGROUND Faecal urgency and incontinence with rectal hypersensitivity is a distressing, unexplained disorder that is inadequately treated. We aimed to determine whether expression of the heat and capsaicin receptor vanilloid receptor 1 (TRPV1 or VR1) was changed in rectal sensory fibres, and to

The effect of epidural resiniferatoxin in the neuropathic pain rat model.

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BACKGROUND Resiniferatoxin (RTX) is a potent synthetic agonist for transient receptor potential vanilloid subtype 1 (TRPV1), which has a selectivity for antinociception. The analgesic effect of epidural RTX in a rat model of neuropathic pain has not yet been studied. OBJECTIVE The purpose of this

Anti-inflammatory Properties of Cannabidiol, a Nonpsychotropic Cannabinoid, in Experimental Allergic Contact Dermatitis.

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Phytocannabinoids modulate inflammatory responses by regulating the production of cytokines in several experimental models of inflammation. Cannabinoid type-2 (CB2) receptor activation was shown to reduce the production of the monocyte chemotactic protein-2 (MCP-2) chemokine in

Preservation of acute pain and efferent functions following intrathecal resiniferatoxin-induced analgesia in rats.

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Resiniferatoxin (RTX) is a potent agonist of TRPV1, which possesses unique properties that can be utilized to treat certain modalities of pain. In the present study, systemic intraperitoneal (i.p.) administration of RTX resulted in a significant decrease in acute thermal pain sensitivity, whereas

Treatment with methyl-β-cyclodextrin prevents mechanical allodynia in resiniferatoxin neuropathy in a mouse model.

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Specialized microdomains which have cholesterol-rich membrane regions contain transient receptor potential vanilloid subtype 1 (TRPV1) are involved in pain development. Our previous studies have demonstrated that the depletion of prostatic acid phosphatase (PAP) - a membrane-bound ectonucleotidase

Casein kinase II regulates N-methyl-D-aspartate receptor activity in spinal cords and pain hypersensitivity induced by nerve injury.

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Increased N-methyl-d-aspartate receptor (NMDAR) activity and phosphorylation in the spinal cord are critically involved in the synaptic plasticity and central sensitization associated with neuropathic pain. However, the mechanisms underlying increased NMDAR activity in neuropathic pain conditions

Peripheral inflammation induces up-regulation of TRPV2 expression in rat DRG.

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The transient receptor potential vanilloid subfamily member 2 (TRPV2) is a cation channel activated by temperatures above 52 degrees C. To analyze the contribution of TRPV2 to the development of inflammation-induced hyperalgesia, the expression of TRPV2 in primary sensory neurons was analyzed after

Identification of the sensory nerve fiber responsible for lysophosphatidic acid-induced allodynia in mice.

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Lysophosphatidic acid (LPA) has been considered one of the molecular culprits for neuropathic pain. Understanding how LPA changes the function of primary afferent fibers might be an essential step for clarifying the pathogenesis of neuropathic pain. The present study was designed to identify the

Effect of Intravesical Liposome-Based Nerve Growth Factor Antisense Therapy on Bladder Overactivity and Nociception in a Rat Model of Cystitis Induced by Hydrogen Peroxide.

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The aim of this study was to evaluate whether liposome-based local suppression of nerve growth factor (NGF) in the bladder has effects on bladder hypersensitivity in a rat cystitis model induced by intravesical instillation of hydrogen peroxide (HP). HP (1.5%) was intravesically administered to

Phenotypes and peripheral mechanisms underlying inflammatory pain-related behaviors induced by BmK I, a modulator of sodium channels.

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The integrated mechanisms of dynamic signaling of sodium channels involved in clinical pain are still not yet clear. In this study, a new rat inflammatory pain model was developed by using the unilateral intraplantar injection of BmK I, a receptor site 3-specific modulator of sodium channels from

[Pathophysiology of the overactive bladder and its pharmacological treatment].

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This paper reviews the possible mechanisms underlying bladder overactivity and discusses the targets for pharmacological treatment of this disorder. Damage to the brain (cerebrovascular disease, etc.) induces bladder overactivity by reducing suprapontine inhibition. Currently, attention has focused

Involvement of the glutamatergic system in the nociception induced intrathecally for a TRPA1 agonist in rats.

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The transient receptor potential ankyrin 1 (TRPA1) is expressed in peripheral and spinal terminals of sensory neurons, jointly to the vanilloid receptor (TRPV1). A relevant peripheral role of TRPA1 receptor has been implicated in a variety of processes, including the detection of noxious cold, and

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