objective(s) the present study was undertaken to investigate the nociception activity of promethazine, a tranquillizer devoid of hypnotic activity in mice. materials and methods antinociception was evaluated, using the acetic acid-induced writhing, tail flick, hot plate and formalin pain tests. results promethazine (4 and 6 mg/kg) and acetylsalicylic acid (100 mg/kg) produced a significant inhi...

herbal medicine has an old history with a broad application all over the world. many researches have focused on the curative as well as antinociceptive effects of herbal extract. the aim of this study was to investigate the analgesic effects of berberis vulgaris hydroethanolic extract (bve) in male mice. 30 male mice were divided into 5 groups: control, treated by morphine, treated by bve (150 ...

background and objective: considering the wide side effects of synthetic pain killers, use of herbal drugs in folk medicine as analgesic agents has increased. in the present work, we tried to uncover the pharmacological potential of ethanolic extracts by using various animal models and also to explore the potent antinociceptive effect of the plant thymus kotschyanus. materials and methods: the ...

The antinociceptive effects of MDMA and morphine were examined in rats using the tail-flick and hot-plate analgesiometric tests. MDMA, in the dose range of 1.5-6.0 mg/kg IP, produced a dose-dependent elevation in hot-plate latency, but did not elevate tail-flick latency. In contrast, morphine (2-8 mg/kg, IP) produced analgesia on both the tail-flick and hot-plate tests in a dose-dependent manne...

The aim of the present study was to determine if phenobarbital affects the nociception threshold. Systemic (1-20 mg/kg) phenobarbital administration dose dependently induced hyperalgesia in the tail-flick, hot-plate and formalin tests in rats and in the abdominal constriction test in mice. Formalin and abdominal constriction tests were the most sensitive procedures for the detection of hyperalg...

We reported previously that nitrous oxide induces pre-emptive analgesia that is partially antagonized by naloxone and totally antagonized by halothane. The aims of this study were to determine if halothane and isoflurane are similar in this respect and to examine if volatile anaesthetics antagonize the analgesic effect of exogenous opioids. We found that 75% nitrous oxide prolonged tail-flick l...

The limbic system has been implicated in the modulation of pain. The aim of this study was to determine the role of amygdala in different types of pain, viz., phasic and tonic. Unilateral stimulation of central nucleus of amygdala (CeA), basolateral nucleus (BL) and medial amygdaloid (MeA) in conscious rats resulted in the reduction of the tonic formalin-induced pain. The thresholds for simple ...

This study characterizes the anesthetic profile of dexmedetomidine on the basis of steady-state plasma concentrations using defined stimulus-response, ventilatory, and continuous electroencephalographic (EEG) and cardiovascular effect measures in rats. At constant plasma concentrations of dexmedetomidine (range, 0.5-19 ng/ml), targeted and maintained by target-controlled infusion, the whisker r...

  There are several reports on the therapeutic effects of TFG in Iranian traditional medical literature such as antinociceptive, antipyretic, and anti-inflammatory, antidiabetic and antidiuretic effects. The anti-inflammatory and anti-pyretic effects of TFG have been confirmed in experimental models. In the present study, the antinociceptive effect of TFG extract in formalin and tail flick test...