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Local joint inflammation plays an important role in the pathogenesis of temporomandibular joint (TMJ) osteoarthrosis (TMJOA). Yohimbine, an alpha-2 adrenergic receptor antagonist, possesses anti-inflammatory properties; however, the ability of Yohimbine to protect against TMJOA-associated
Effects of the alpha2-adrenoceptor antagonist yohimbine on the antinociception produced by a low dose of naloxone were examined in a rat model of carrageenan-induced inflammation. In rats receiving saline prior to naloxone injection, the low dose of naloxone (5 microg/kg, i.p.) significantly
Rheumatoid arthritis (RA) is the most common type of chronic inflammatory disease which is triggered by dysfunction in the immune system which in turn affects synovial joints. Current treatment of RA with NSAIDs and DMRDs is limited by their side effect. As a result, the interest in alternative,
BACKGROUND
We studied whether peripheral alpha2-adrenergic receptors are involved in the antihyperalgesic effects of oxcarbazepine by examining the effects of yohimbine (selective alpha2-adrenoceptor antagonist), BRL 44408 (selective alpha(2A)-adrenoceptor antagonist), MK-912 (selective
Previous work from our lab showed that stimulation of the lateral hypothalamus (LH) produces analgesia (antinociception) in a model of thermal nociceptive pain. This antinociceptive effect is mediated by alpha2-adrenoceptors in the spinal cord dorsal horn. However, a concomitant, opposing
Previous in vitro studies on airway smooth muscles of cats with turpentine oil-induced inflammation of the airways have shown an increased sensitivity of the lung strips to histamine application. This effect was abolished by pretreatment with phentolamine. This communication describes the effect of
In this study, the effects of yohimbine (alpha2-adrenoceptor antagonist) and clonidine (alpha2-adrenoceptor agonist) on anti-hyperalgesia induced by carbamazepine and oxcarbazepine in a rat model of inflammatory pain were investigated. Carbamazepine (10-40 mg/kg; i.p.) and oxcarbazepine (40-160
BACKGROUND
We sought to elucidate the effects of dexmedetomidine, a selective alpha2-adrenergic receptor agonist, on the regulation of pulmonary inflammation in ventilator-induced lung injury (VILI) in a rat model.
METHODS
A total of 64 adult male Sprague-Dawley rats were assigned to receive either
BACKGROUND
We have earlier reported the antinociceptive and anti-inflammatory effects of Alafia barteri Oliver (Apocynaceae) in rodents but its mechanism of actionsare yet to be elucidated.
OBJECTIVE
This study sought toinvestigate the involvement of monoaminergic, nitric oxide-cyclic GMP-K+ channel
BACKGROUND
Burrowing is an evolutionarily conserved behaviour in rodents. This study validates a refined burrowing paradigm (requiring a reduced number of animals) in a rat model of sub-chronic knee joint inflammation and evaluates its sensitivity and specificity for analgesic drugs.
METHODS
Knee
BACKGROUND
Tianeptine is an atypical antidepressant that exhibits structural similarities to the tricyclic antidepressants but has distinct neurochemical properties. We evaluated the antinociceptive activity of tianeptine and its mechanism of action regarding serotonergic and adrenergic transmission
The effect of chronic granulomatous inflammation of the intestine was studied on the prejunctional modulation of cholinergic nerve activity in the mouse ileum. Contractions to carbachol (0.01 - 0.3 microM) and to electrical field stimulation (EFS, 0.25 - 8 Hz) of enteric neurons were higher in
A wide variety of noxious stimuli are known to induce a powerful inhibition of pain sensation evoked at a remote region of the body. Here we show that an intraperitoneal acetic acid (AA) conditioning stimulus produces long-lasting inhibition of formalin-evoked somatic inflammatory pain behavior in
Clonidine (0.1-1.0 mg/kg, i.p.) exhibited anti-inflammatory activity in carrageenan-, formalin-, 5-HT- and histamine-induced paw oedema in rats. Similarly, other two alpha 2-adrenoceptor agonists, guanfacine and B-HT 920, also displayed an anti-inflammatory action in these models. The
BACKGROUND
Alpha 2A adrenergic receptor (AR) is a subtype of α2 AR belonging to G protein-coupled receptors, and exerts a variety of biological effects. Recent studies have demonstrated that the α2A AR activation was closely related with inflammatory reaction. The present study aimed to investigate