Possible Modulation of the Anexiogenic Effects of Vitex Agnus-castus by the Serotonergic System | ||
| Iranian Journal of Basic Medical Sciences | ||
| مقاله 11، دوره 15، شماره 2، خرداد 2012، صفحه 768-776 اصل مقاله (1.53 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22038/ijbms.2012.4851 | ||
| نویسندگان | ||
| Parichehr Yaghmaei1؛ Shahrbanoo Oryan2؛ Laleh Fatehi Gharehlar1؛ Ali-Akbar Salari3؛ Jalal Solati* 4 | ||
| 1Department of Animal Biology, Science and Research Campus, Islamic Azad University, Tehran, Iran | ||
| 2Tarbiat Moalem University of Tehran, Tehran, Iran | ||
| 3Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| 4Department of Biology, Karaj Branch, Islamic Azad University, Karaj, Iran | ||
| چکیده | ||
| Objective(s) There is well documented evidence for the increase in widespread use of complementary and alternative medicine in the treatment of physical and psychiatric symptoms and disorders within the populations. In the present study, we investigated the influence of Vitex agnus-castus (vitex) on anxiety-like behaviors of rats. Materials and Methods Elevated plus maze which is one of the methods used for testing anxiety is used in our present study. Rats were orally administrated with vitex for two week. The anxiety test was carried out after two weeks of oral administration of vitex. For evaluating interaction of vitex and serotonergic systems, rats were anaesthetized with ketamine and special cannulas were inserted stereotaxically into the third ventricle (TV) of brain. After 1 week recovery, the effects of serotonegic agents on anxiety were studied. Results Oral administration of vitex (100, 200, 300 mg/kg) for two weeks induced an anxiogenic-like effect which was shown through specific decreases in the percentages of open arm time (OAT %) and open arm entries (OAE %). Intra-TV infusion of 5HT1A receptor agonist, 8-OH-DPAT (5, 10 and 25 ng/rat) increased OAT% and OAE%, indicating anxiolytic–like behavior. However, injection of 5HT1A receptor antagonist NAN190 (0.25, 0.5 and 1 µg/rat) produced anxiogenic-like behavior. The most effective dose of 8-OH-DPAT (10 ng/rat), when co-administered with vitex (100, 200, 300 mg/kg), attenuated the anxiogenic-like effects of vitex significantly. Injection of the less effective dose of NAN190 (0.5 µg/rat), in combination with vitex (100, 200, 300 mg/kg), potentiate anxiogenic effects of vitex. Conclusions These results illustrate that 5HT1A receptor is involved in the anxiogenic effects of vitex. | ||
| کلیدواژهها | ||
| Anxiety؛ Rat؛ Serotonergic system؛ Vitex agnus-castus | ||
| مراجع | ||
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