OBJECTIVES 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 an...

Özet Amaç: Tek başına veya birlikte sistemik olarak verilen tramadol ve gabapentinin farelerde akut ağrıda olası antinosiseptif etklerini araştırmaktır. Gereç ve Yöntem: Hayvan etik komitesinin onayı sonrası; 96 BALB/c albino dişi fare 12 gruba ayrıldı: (I) Enjeksiyon yapılmaksızın kontrol grubu, (II) salin uygulanan kontrol grubu, (III)-(IV) tramadol 10 mg/kg veya 30 mg/kg uygulanan gruplar, (...

BACKGROUND Pregabalin has shown remarkable antinociceptive effects in neuropathic pain; however, its efficacy against acute and visceral pain remained controversial. OBJECTIVES The present study aimed at investigating the involvement of N-methyl-D-aspartate (NMDA) receptors in the antinociceptive effect of pregabalin in both acute and visceral pain using and comparing hot plate test and writh...

This study was performed to assess the interactions that occur between delta- and mu opioid receptors by studying effects of the systemically active nonpeptide delta agonist BW373U86 and the mu agonist fentanyl in mice. Concentrations of the compounds were varied, and analgesic responses were determined by 55 degrees C hot-plate assays. BW373U86 produced hot-plate antinociceptive activity along...

It is widely accepted that the classical constant-temperature hot-plate test is insensitive to cyclooxygenase inhibitors. In the current study, we developed a variant of the hot-plate test procedure (modified hot-plate (MHP) test) to measure inflammatory nociception in freely moving rats and mice. Following left and right hind paw stimulation with a phlogogen and vehicle, respectively, the anim...

Numerous methods of management applied in order to obtain higher therapeutic efficacy of drugs with minimum adverse effects include taking advantage of interactions taking place between individual agents. Analgesics are combined with drugs belonging to other therapeutic groups, including, more and more frequently, antiepileptic agents. The influence of oxcarbazepine (10 mg/kg) on the antinocice...

introduction: pain research using animal models is related to ethical concerns, so invertebrates and insects have been recommended by researchers. in the present study, the nociceptive and antinociceptive effects of capsaicin, aspirin, morphine and chili extract were examined using fruit fly (drosophila melanogaster) as an alternative for rodent pain model. methods: stage 3 of larvae and adult ...

Objective: Berberis vulgaris has antioxidant, hepato--renal protective, antibacterial, lipid lowering, anti-inflammatory and antinociceptive activities. The genus Berberis, has another member called Berberisintegerrima which has not been studied for antinociceptive activity and therefore, this study was aimed to examine the antinociceptive effect oftotal extract and alkaloid fractions of Berber...

The present study is a designed protocol for investigation of the analgesic effect of oral and intraperitoneal (i.p.) administration of alcoholic Datura stramonium (DS) seed extract as a rich source of alkaloid substances. Male NMRI rats were divided into control and treatment groups. The treatment rats received different doses of the DS seed extract, which was prepared from alcoholic smashed s...

The present study is a designed protocol for investigation of the analgesic effect of oral and intraperitoneal (i.p.) administration of alcoholic Datura stramonium (DS) seed extract as a rich source of alkaloid substances. Male NMRI rats were divided into control and treatment groups. The treatment rats received different doses of the DS seed extract, which was prepared from alcoholic smashed s...