Using a valid chronic mild stress (CMS) model of depression, we found that adolescent (postnatal days [PND] 28-41) CMS induced transient alterations in anhedonia that did not persist into adulthood after a 3-week recovery period. Previously stressed adult rats exhibited more immobility/despair behaviors in the forced swimming test and a greater number of trials to reach criterion in the set-shi...

Objective: Caryophyllus aromaticus mill L (Caryophyllus aromaticus) is a herbal spice plant that has several therapeutic effects. It also heals depression, grief, nervous stress and tension. In the present study we evaluated antidepressant-like effect of Caryophyllus aromaticus using forced swimming test (FST). Material and Methods: Three doses of ethanolic extract (50, 100 and 200 mg/kg) was i...

The molecular mechanisms mediating stress-induced dysphoria in humans and conditioned place aversion in rodents are unknown. Here, we show that repeated swim stress caused activation of both kappa-opioid receptor (KOR) and p38 mitogen-activated protein kinase (MAPK) coexpressed in GABAergic neurons in the nucleus accumbens, cortex, and hippocampus. Sites of activation were visualized using phos...

Three groups of rats were exposed to escapable shock, inescapable shock, or no shock using procedures known to induce learned helplessness effects. Twenty-four hours later, hippocampal electroencephalograms were recorded from freely moving subjects. A 5-s probe shock was delivered after 15 min, and recording continued. Frequency analyses revealed no differences between the pretreatment groups d...

The molecular mechanisms mediating stress-induced dysphoria in humans and conditioned place aversion in rodents are unknown. Here, we show that repeated swim stress caused activation of both -opioid receptor (KOR) and p38 mitogen-activated protein kinase (MAPK) coexpressed in GABAergic neurons in the nucleus accumbens, cortex, and hippocampus. Sites of activation were visualized using phosphose...

Background: The present study was designed to investigate the effect of citalopram, ketamine, glycine and their combinations on animal models depression. Methods: Swiss Albino male mice were subjected chronic mild stress for 6 weeks inducing depression, randomly divided into different groups: citalopram (5 10 mg/kg), ketamine (17.5 35 (50 100 mg/kg) + mg/kg). Two behavioural tests utilized asse...

▼ Objectives: The purpose of this investigation was to evaluate whether Jobelyn ® (JB) possesses anti-depressant-like property in the mouse forced swimming test (FST), tail suspension test (TST) and yohimbine-induced lethality test (YLT) in aggregated mice. Methods: Mice were given JB (10–100 mg/kg, p.o.) daily for 7 days and then subjected to FST, TST, YLT and open fi eld test. The parameters ...

BACKGROUND: The resistance to depression therapy remains high, and failure leads suicide. Curcuma heyneana (C. heyneana) is a plant of Zingiberaceae. Conventionally, the rhizome has been used as an anxiolytic sedative. However, activity antidepression never conducted. AIM: Therefore, this research was aimed investigate antidepressant C. rhizome. METHODS: This conducted using male mice aged 2–3 ...

Smoking is frequently co-morbid with depression. Although it is recognized that depression increases the risk for smoking, it is unclear if early smoking exposure may increase the risk for depression. To test this possibility we assessed the effects of adolescent nicotine exposure on the Forced Swim Test (FST), which is used as a measure of passive coping, and depressive-like behavior in rodent...

Two mild stress paradigms were used in the present study: acute (i.e. three injections of saline over 24 h) and subchronic (i.e. single daily injection of saline for 7 d). These mild stress procedures did not alter the behaviour of wild-type mice in the forced swim test. However, male BDNF+/- mice exhibited increased immobility in the forced swim test after mild stress. This genotypic differenc...