Introduction: Opposite observations about the discrepancy in the pain perception between male and female has been reported. In this regard, pain thresholds among male and female rats in different phases of oestrous cycle were evaluated via tail immersion test. In addition, efficiency of alcoholic extract of datura stramonium as an analgesic plant in the modulation of acute pain threshold has be...

phencyclidine (1-(1-phenylcyclohexyl) piperidine, pcp, i) and ketamine (2-o-chlorophenyl-2-methylaminocyclohexan, ii) have shown analgesic effects. some of its derivatives were synthesized and their biological properties have been studied. in this study, a new derivative of pcp, (1-[1-(3-methoxyphenyl) (tetralyl)] piperidine, pcp-och3-tetralyl, iii) was synthesized and the acute thermal pain of...

Background and Objective: Hyperalgesia is one of the marked clinical signs of patients with diabetes mellitus that affects their lifestyle. This study was conducted to assess the anti-nociceptive effect of chronic administration of curcumin in streptozotocin (STZ)-diabetic rats using formalin, hot tail immersion, and paw pressure tests. Materials and Methods: This study was conducted on 40 male...

Pain represents a major clinical problem and one which has exercised generations of healthcare professionals. Earthworms are used as a traditional Chinese medicine, and have been applied pharmacologically and clinically since a long time in China. However, the analgesic effects of earthworm extract (EE) are seldom studied. Hence, we evaluated the analgesic effects of EE in mice. The obtained da...

Pain is an ill-defined, disabling accompaniment of many medical conditions. It is often evoked by an external and internal noxious stimulus. It affects millions of people suffering with depression and other psychiatric disorders. Most of the antidepressants are having analgesic capacity to treat the pain by inhibiting nociceptive stimuli by increasing the seratonergic and noradrenergic transmis...

Clerodendron colebrookianum Walp., (Fam: Verbenaceae) locally known is "NEFAFU" is widely used for curing various diseases. Here some pharmacological properties of this plant were studied using rat & mice of either sex. Methanol extract (MLE) of various concentrations (50, 100, 200 mg/kg of body wt) were tested on animals. Carrageenin induced rat paw oedema model with three hours for oedema for...

OBJECTIVE To study analgesic and anti-inflammatory activities of a methanolic extract (ME) of Argyreia speciosa (AS) root powder. MATERIALS AND METHODS The study was carried out using male albino mice (20-25 gm) and male wistar rats (100-150gm). The ME was prepared using soxhlet extraction process. The effect of ME of A. speciosa was investigated for analgesic activity using acetic acid-induc...

The alcoholic extract of Achyranthes bidentata (AAB) has been studied for analgesic, anticonvulsant and CNS depressant activities in animal models. Analgesic activity was studied using acetic acid-induced writing test for assessing peripheral analgesic effect and tail immersion test for central analgesic effect. Anticonvulsant activity was performed by maximal electroshock induced convulsions; ...

Methanolic extract of whole plant of Amaranthus viridis L (MEAV), was screened for antinociceptive activity using acetic acid induced writhing test, hot plate test and tail immersion test in mice. In a similar way a screening exercise was carried out to determine the antipyretic potential of the extract using yeast induced pyrexia method in rats. Administration of the extracts was applied to bo...

The present study examined the role of the rostral ventrolateral medulla (RVLM) in the modulation of acetylcholine (ACh) release by morphine. We examined the effect of morphine on the release of ACh in the RVLM of freely moving rats using the in vivo microdialysis method. The basal level of ACh was 303.0 +/- 28.2 fmol/20 microliter/15 min in the presence of neostigmine (10 microM). Morphine at ...