objective(s): the aim of study was to investigate the antinociceptive effect of intracerebroventricular (icv) microinjection of origanum vulgare (org) extract and possible involvement of opioid receptors.   materials and methods: cannula was inserted into left ventricle of male rats. five days after surgery tail flick latency (tfl) was measured after icv microinjection of, org (1, 3 and 6 μg / ...

the development of combination therapy is a coherent approach in severe pain treatment. the present study investigated the antinociceptive effect of pregabalin alone and in combination with tramadol in acute pain modeling. therefore, three groups of male mice received either pregabalin (1 to 400 mg/kg), tramadol (10 to 80 mg/kg) or their combination intraperitoneally. then latency time, maximum...

calendula of.cinalis (asteraceae) is widely used in traditional medicine as an anti-in.ammatory agent and has also been reported to have anti-bacterial, anti-fungal and anti-viral activities.  sesquiterpene glycosides, saponins, triol, triterpenes and .avonoids are observed in its composition. the present study was designed to evaluate the antinociceptive effect of hydro-alcoholic extract of ca...

Microinjection of kappa opioid receptor (KOR) agonists into the rostral ventromedial medulla (RVM) attenuates mu-opioid receptor mediated antinociception and stress-induced analgesia, yet is also reported to have an analgesic effect. To determine how KOR agonists produce both antinociceptive and antianalgesic actions within the RVM, the KOR agonist U69593 was microinjected directly into the RVM...

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, (...

Microinjection of kappa opioid receptor (KOR) agonists into the rostral ventromedial medulla (RVM) attenuates mu-opioid receptor mediated antinociception and stress-induced analgesia, yet is also reported to have an analgesic effect. To determine how KOR agonists produce both antinociceptive and anti-analgesic actions within the RVM, the KOR agonist U69593 was microinjected directly into the RV...

Two highly selective mu-opioid receptor agonists, endomorphin-1 and endomorphin-2, have been identified and postulated to be endogenous mu-opioid receptor ligands. We determined the antinociceptive effects of these two ligands at the supraspinal level in mice with the tail-flick and hot-plate responses. The i.c.v. injection of endomorphin-1 and -2 inhibited the tail-flick and hot-plate response...