this paper presents the effect of high environmental heat on behavior of the male charles foster rats. eighty rats were divided into three groups, subjected to (i) acute heat stress (ii) chronic heat stress and (iii) handling control group. animals were exposed to the hot environment in a biological oxygen demand incubator at 38 ± 1ºc (relative humidity 45-50%) for four hours of continuous sing...

echium amoenum (boraginaceae), a very popular medicinal plant in iran traditional medicine, is used as a tonic, tranquillizer, diaphoretic, cough and sore throat remedy, and antipneumonia. preliminary phytochemical studies of the plant showed that it contains saponins, flavonoids, unsaturated terpenoids and sterols. in this study, an aqueous extract from petals of this plant was used 125 mg/kg ...

introduction: this study was designed to investigate the effects of music in wistar rats after sub-chronic treatment of simvastatin. the rats were orally administered with either simvastatin or saline (controls). after 4 weeks of drug treatment, the rats were selected for behavioral studies. the rats were exposed to music 24 hours before behavioral tests (mozart’s piano sonata, kv361, largo). r...

one of the main components of the stress system is hypothalamus- pituitary-adrenal (hpa) axis. acute activation of µ-opioid receptors increases the activity of the hpa axis, leading to release of acth and corticosterone. glucocorticoids can change behaviors, depend on age but there were no evidences about the interaction between age, opioid system and glucocorticoids. in this experiment, effect...

introduction: fennel is rich in phytoestrogens and is used for estrogen deficiency disorders. estrogens affect anxiety through neurochemical systems such as gaba-a receptors. in this study the effects of fennel on gaba-a and estrogen receptors in anxiety were investigated. methods: adult female wistar rats weighing (180±20 g) were divided into 8 groups. groups received saline, fennel (200, 500,...

introduction: in this study, we investigated the role of n-methyl-d-aspartate (nmda) receptors in the ventral hippocampus (vh) and their possible interactions with gabaa system on anxiety-like behaviors. methods: we used an elevated-plus maze test (epm) to assess anxiety-like behaviors and locomotor activity in male wistar rats. results: the results showed that intra-vh infusions of different d...

anxiety symptoms have been reported to be present in many patients with diabetes mellitus. however, little is known about the effects of hyperglycemia in critical periods of the central nervous system development. we assessed locomotive, exploratory, and anxiety behaviors in adult rats that remained from infantile repeated hyperglycemia by the open field and elevated plus maze tests. our findin...

conclusions acute and chronic administration of ellagic acid had anxiolytic property. also, the most effective dose of ellagic acid was 30 mg/kg. pretreatment with flumazenil reversed the beneficial effect of ellagic acid and diazepam on anxiety. it is likely that the anxiolytic effect of ellagic acid is largely mediated by activation of gabaa receptor. results acute and chronic application of ...