Death-feigning, also called tonic immobility, is found in a number of animal species across vertebrate and invertebrate taxa. To date, five hypotheses have been proposed for the adaptive significance of tonic immobility. These are that tonic immobility is effective for prey because (i) avoiding dead prey is safer for predators, (ii) immobility plays a role in physical defence, (iii) immobility ...

objective: the present study was designed to investigate the putative antidepressant effects of crocin and crocetin, two major active ingredients of crocus sativus l. (saffron) using mice in two different regimens of acute and sub-acute administration. material and methods: in acute treatment, antidepressant-like activities of crocin and crocetin (10, 20 and 40 mg/kg, i.p.) were evaluated using...

Hyperactivity of the hypothalamic pituitary-adrenal (HPA) axis plays a role in the pathophysiology of major depressive disorder (MDD). Recent studies suggest the role of the glutamatergic system in the pathophysiology of MDD, and N-methyl-D-aspartate (NMDA) receptor antagonists have shown antidepressant effects in both preclinical and clinical studies. However, little is known about the role of...

OBJECTIVE To determine the risk of venous thromboembolism (VTE) associated with prolonged work- and computer-related seated immobility. DESIGN Case-control study in which cases were patients aged 18-65 years attending outpatient VTE clinics, and controls were patients aged 18-65 years admitted to CCU with a condition other than VTE. Interviewer-administered questionnaires obtained detailed in...

Previously, we demonstrated antidepressant-like effect of magnesium (Mg) in the forced swim test (FST). Moreover, the joint administration of Mg and imipramine (IMI) at ineffective doses per se, resulted in a potent reduction in the immobility time in this test. In the present study, we examined the effect of immobility stress (IS), and Mg and/or IMI administration on FST behavior. IS induced e...

Using a Digiscan Actimeter, many previous studies have shown that low dose caffeine (6.2525 mg/kg) stimulates locomotion while caffeine in high doses (100 mg/kg) depresses locomotion. This locomotor stimulatory effects induced by caffeine in rodents have been attributed to antagonism of adenosine A1 and A2A receptors while its depressant effects are mediated by the blockade of the A1 receptors....

Objective(s): Curcumin, a plant alkaloid from Curcuma longa, possess antioxidant and anti-inflammatory properties. Recently, the antidepressant activities of curcumin were reported. Nevertheless, bioavailability of curcumin limits its therapeutic utility. Nanotechnology is a developing field that potentially enhances bioavailability and the plasma concentration of curcumin. This study investiga...

While researchers are increasingly re-conceptualizing international migration, far less attention has been devoted to re-thinking short-distance residential mobility and immobility. In this paper we harness the life course approach to propose a new conceptual framework for residential mobility research. We contend that residential mobility and immobility should be re-conceptualized as relationa...

Fosinopril, ramipril and losartan significantly decreased the duration (sec) of immobility in forced swim test and were comparable to amitriptyline. The duration of immobility were significantly decreased in fosinopril, ramipril and losartan in the tail suspension test and were comparable to amitriptyline. Only losartan significantly increased the rearing number of entries, time spent (sec) in ...

BACKGROUND Recently, experimental zinc deficiency has been correlated with depression-like alterations in rodents. METHODS In the first part of present study, the time course of zinc deficient diet induced alterations in the tail suspension test (TST) in mice was investigated. In the second part, the effect of imipramine and escitalopram in control and zinc-deprived for 3 weeks mice was exami...