objectives this study was designed to evaluate the antinociceptive activity of methanol extract of n. depauperata in male mice. materials and methods the anti-nociceptive activities of the extract were investigated by the formalin test and hot plate test respectively. comparisons between the groups were carried out using one-way analysis of variance (anova), and post hoc tukey test. results n. ...

the purpose of the present study was to evaluate anti-nociceptive effects of morphine, tramadol, meloxicam and their combinations in rats. seventy male wistar rats were divided into seven equal groups and randomly assigned to receive intraperitoneal saline (s) (control group, 1.0 ml kg-1), morphine (mo) (4.0 mg kg-1), tramadol (tr) (12.5 mg kg-1), meloxicam (ml) (1.0 mg kg-1), tramadol- morphin...

objective(s):reduction of pharmacological effectiveness or tolerance appears following repeated administration of many analgesic drugs. we investigated tolerance to anti-nociceptive effects of orexin-a, an endogenous potent analgesic peptide using the hot-plate test.materials and methods:orexin-a was microinjected icv (intracerebroventricular) with an interval of 12 hr for 7 continuous days and...

Melatonin is an important hormone for regulating mammalian circadian biology and cellular homeostasis. Recent evidence has shown that melatonin exerts anti-nociception effects in both animals and humans. However, according to clinical trials, the anti-nociception effects of melatonin are still controversial. The aim of this meta-analysis was to investigate the anti-nociception effects of melato...

The synthesis of a novel cyclohexanone derivative (CHD; Ethyl 6-(4-metohxyphenyl)-2-oxo-4-phenylcyclohexe-3-enecarboxylate) was described and the subsequent aim to perform an in vitro , vivo silico pharmacological evaluation as putative anti-nociceptive anti-inflammatory agent mice. Initial studies revealed that CHD inhibited both cyclooxygenase-2 (COX-2) 5-lipoxygenase (5-LOX) enzymes it also ...

Plants from the genus Phyllanthus like Phyllanthus muellerianus have long been used in folk medicine for several ailments including fevers, toothache, dysmenorrhea, anemia and paralysis. Despite these folkloric uses, there is little scientific data supporting the use of this plant in the management of pain. The purpose of this study is to evaluate the aqueous extract of the aerial parts of Phyl...

The present study investigated the role of calcitonin gene-related peptide (CGRP) in the modulation of nociception in periaqueductal grey (PAG) of rats. Hindpaw withdrawal latencies (HWLs) were tested by hot-plate and Randall Selitto tests. The HWLs to thermal and mechanical stimulation increased significantly after intra-PAG administration of 0.26 or 0.13 nmol of CGRP, but not 0.026 nmol of CG...

plants from the genus phyllanthus like phyllanthus muellerianus have long been used in folk medicine for several ailments including fevers, toothache, dysmenorrhea, anemia and paralysis. despite these folkloric uses, there is little scientific data supporting the use of this plant in the management of pain. the purpose of this study is to evaluate the aqueous extract of the aerial parts of phyl...

The existence of neural opioid-mediated networks that are specific for the modulation of nociception is well established. Parallel non-opioid pathways exist, but their underlying physiology is little known. We now report that oxytocin administered intraperitoneally to rats, and intraperitoneally or intracisternally to mice has an anti-nociceptive effect, which is related to the activation of de...

Little is known about analgesia in lower vertebrates such as the Speke's hinged tortoise (Kinixy's spekii), yet of late they are increasingly being adopted as pets. The effects of morphine (5, 7.5, 10 and 20 mg/kg), pethidine (10, 20, and 50 mg/kg) and naloxone (5 mg/kg) on nociception induced by the formalin test (12.5%, 100 microL) were studied in the Speke's hinged tortoise. Formalin induced...