background: the objective of this study is to develop a new animal model based on signaling pathways to understand the pathophysiology, therapy of depression, and to investigate the antidepressant activity of enicostemma littorale which is not yet established. methods: animal models of depression were raised by physical methods and administration of methyl isobutyl ketone (100 mg/kg b.w., i.p.,...

BACKGROUND The previous study showed that arylpiperazine can condition affinity to α-adrenoceptors, 5-HT1A/5-HT2A receptors and compounds with arylpiperazine had antidepressant-like effect. The aim of this study was to determine the antidepressant-like activity of new arylpiperazines containing novel 8-alkoxy-purine-2,6-dione fragments. METHODS New 3-chloroarylpiperazinylalkyl analogs of 8-al...

Recent findings indicate that fingolimod, the first oral drug approved for the treatment of multiple sclerosis (MS), acts as a direct inhibitor of histone deacetylases (HDACs) and enhances the production of brain-derived neurotrophic factor (BDNF) in the CNS. Both mechanisms are relevant to the pathophysiology and treatment of major depression. We examined the antidepressant activity of fingoli...

Abstract Depression is a common psychiatric disorder that can be continuous or recurrent. It has been previously reported intestine probiotics play an essential role in the bidirectional communication of and brain. This study aims to investigate antidepressant effects kefir, probiotic supplement, Lactobacillus rhamnosus GG their potentials depression-like behaviour treatment two-week four-week ...

New antidepressant pharmacotherapies that provide rapid relief of depressive symptoms are needed. The NMDA receptor antagonist ketamine exerts rapid antidepressant actions in depressed patients but also side effects that complicate its clinical utility. Ketamine promotes excitatory synaptic strength, likely by producing high-frequency correlated activity in mood-relevant regions of the forebrai...

The aim of the present study was to determine the effect of Silymarin (a flavolignan) in experimental model of depression. Silymarin was administered in 3 doses (150, 200, 250 mg/kg; i.p.) to male Swiss mice (25-30 g) for 15 days daily. On 15 th day immobility time was determined using Forced swim test (FST). The two effective doses of Silymarin (200 and 250 mg/kg) from FST study were selected,...

New antidepressant pharmacotherapies that provide rapid relief of depressive symptoms are needed. The NMDA receptor antagonist ketamine exerts rapid antidepressant actions in depressed patients but also side effects that complicate its clinical utility. Ketamine promotes excitatory synaptic strength, likely by producing high-frequency correlated activity in mood-relevant regions of the forebrai...

The nicotine in tobacco is thought to modulate neuronal systems regulating mood. Moreover, it appears possible that blockade rather than activation of beta2-containing (beta2*) nicotinic acetylcholine receptors (nAChRs) may lead to antidepressant-like effects. We used cytisine, a partial agonist of alpha4/beta2*nAChRs and a full agonist at alpha3/beta4*nAChRs, in several tests of antidepressant...

The antidepressant action of cannabis as well as the interaction between antidepressants and the endocannabinoid system has been reported. This study was conducted to assess the antidepressant-like activity of Delta(9)-THC and other cannabinoids. Cannabinoids were initially evaluated in the mouse tetrad assay to determine doses that do not induce hypothermia or catalepsy. The automated mouse fo...

OBJECTIVE The present study was undertaken to evaluate anti-depressant activity of Myristica fragrans (MS). MATERIALS AND METHODS Male Wistar rats were subjected to imipramine and herbal extract of MS for their antidepressant activity using Forced Swimming Test (FST), Reserpine Reversal Test (RRT), Haloperidol-Induced Catalepsy (HIC), and Pentobarbitone Sleeping Time (PST). RESULTS Administ...