charybdotoxin/inflammation

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The effect of 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) and charybdotoxin (CTX) on relaxations of isolated cerebral arteries to nitric oxide.

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The mechanism underlying smooth muscle relaxations of cerebral arteries in response to nitric oxide is still not completely understood. The present study was designed to determine the role of soluble guanylate cyclase in the relaxations to a nitric oxide/nucleophile complex,

Endogenous cannabinoid receptor agonists inhibit neurogenic inflammations in guinea pig airways.

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BACKGROUND Although neurogenic inflammation via the activation of C fibers in the airway must have an important role in the pathogenesis of asthma, their regulatory mechanism remains uncertain. OBJECTIVE The pharmacological profiles of endogenous cannabinoid receptor agonists on the activation of C

Inflammatory modulation of calcium-activated potassium channels in canine colonic circular smooth muscle cells.

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OBJECTIVE The characteristics of colonic circular smooth muscle slow waves are altered during inflammation. The aim of this study was to examine whether inflammation modulates the open-state probability of Ca2+-activated K+ (KCa) channels in these cells to contribute to these

Adenosine A1 but not A2a receptor agonist reduces hyperalgesia caused by a surgical incision in rats: a pertussis toxin-sensitive G protein-dependent process.

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BACKGROUND Activation of A1 adenosine receptors (A1Rs) causes antinociception after nerve injury and inflammation. However, the role of A2a adenosine receptors (A2aRs) for pain processing is less clear. In the current study, the authors investigated the role of spinal adenosine A1Rs and A2aRs for

Vasorelaxant and Hypotensive Effects of an Ethanolic Extract of Eulophia macrobulbon and Its Main Compound 1-(4'-Hydroxybenzyl)-4,8-Dimethoxyphenanthrene-2,7-Diol.

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Background: Ethnopharmacological studies demonstrated the potential for Eulophia species to treat inflammation, cancer, and cardio-metabolic diseases. The aim of the study was to investigate the vasorelaxant effect of ethanolic Eulophia macrobulbon (EM) extract and its main phenanthrene on rat

The involvement of K+ channels and Gi/o protein in the antinociceptive action of the gallic acid ethyl ester.

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The anti-hyperalgesic action, antinociception, and also the possible mechanisms involved in the action of gallic acid ethyl ester (GAEE) isolated from the aerial part of Phyllanthus urinaria, have been investigated in different models of chemical, mechanical and thermal nociception in mice and rats.

Mechanisms involved in the antinociception caused by compound MV8612 isolated from Mandevilla velutina in mice.

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The pregnane compound MV8612 isolated from the rhizome of the plant Mandevilla velutina administered by intraperitoneal (i.p.), intrathecal (i.t.) or by intracerebroventricular (i.c.v.) routes caused graded and complete inhibition of the thermal hyperalgesia caused by i.t. injection of bradykinin

Activation of Galpha s mediates induction of tissue-type plasminogen activator gene transcription by epoxyeicosatrienoic acids.

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The epoxyeicosatrienoic acids (EETs) are products of cytochrome P450 (CYP) epoxygenases that have vasodilatory and anti-inflammatory properties. Here we report that EETs have additional fibrinolytic properties. In vascular endothelial cells, physiological concentrations of EETs, particularly

Potent suppression of Kv1.3 potassium channel and IL-2 secretion by diphenyl phosphine oxide-1 in human T cells.

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Diphenyl phosphine oxide-1 (DPO-1) is a potent Kv1.5 channel inhibitor that has therapeutic potential for the treatment of atrial fibrillation. Many other Kv1.5 channel blockers also potently inhibit the Kv1.3 channel, but whether DPO-1 blocks Kv1.3 channels has not been investigated. The Kv1.3

Dihydromyricetin improves vascular hyporesponsiveness in experimental sepsis via attenuating the over-excited MaxiK and KATP channels.

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BACKGROUND Dihydromyricetin (DMY) has oxidation resistance, anti-inflammatory and free radical scavenging capabilities. The preventive effects of DMY for vascular hyporeactivity remain unclear. OBJECTIVE This study investigates the preventive effects of DMY in vascular hyporeactivity. METHODS The

Nitric oxide inhibits whole-cell current in cystic fibrosis pancreatic epithelial cells.

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We characterized the effects of nitric oxide (NO) on whole-cell current in pancreatic epithelial cell lines from control (PANC-1) and cystic fibrosis patients (CFPAC-1). The nitric oxide donor S-nitrosoglutathione (GSNO) significantly reduced whole-cell current in CFPAC-1 cells but had no effect in

Acemetacin antinociceptive mechanism is not related to NO or K+ channel pathways.

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Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) used for the treatment of acute gout and inflammation. However, its use is limited due to side effects. Acemetacin is a prodrug of indomethacin that exhibits better gastric tolerability in preclinical and clinical trials. The aim of this

Antamanide Prevents Bradykinin-lnduced Filamin Translocation by Inhibiting Extracellular Calcium Influx.

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Bradykinin-induced paracellular gap formation in cultured endothelial cells (ECs) is preceded by cytoskeletal rearrangement. Actin binding proteins, such as nonmuscle filamin, perform a pivotal role in modulating actin organization. In response to bradykinin treatment, EC filamin translocates from

Novel inhibitors of potassium ion channels on human T lymphocytes.

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The in vitro biological characterization of a series of 4-(alkylamino)-1,4-dihydroquinolines is reported. These compounds are novel inhibitors of voltage-activated n-type potassium ion (K+) channels in human T lymphocytes. This series, identified from random screening, was found to inhibit

Participation of potassium channels in the antinociceptive effect of docosahexaenoic acid in the rat formalin test.

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Docosahexaenoic acid (DHA) is an omega-3 polyunsaturated fatty acid (PUFA) that has shown gastroprotective, cardioprotective, neuroprotective, anti-inflammatory and antinociceptive effects in different models. However, its action mechanism is still not well-defined. Reports indicate that some PUFAs

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