Comparison of antidepressant activity in 4- and 40-week-old male mice in the forced swimming test: involvement of 5-HT1A and 5-HT1B receptors in old mice

2000 ◽  
Vol 153 (4) ◽  
pp. 443-449 ◽  
Author(s):  
Denis Joseph Paul David ◽  
Michel Bourin ◽  
Martine Hascoët ◽  
Marie Claude Colombel ◽  
Glen B. Baker ◽  
...  
Author(s):  
Ajoy Borah ◽  
Binita Singha ◽  
Swopna Phukan

Objective: Depression is a major psychiatric disorder affecting nearly 350 million people worldwide and imposes a substantial health burden on the society. Ceftriaxone has demonstrated neuroprotective effects in animals. It has also undergone trials as a treatment option for amyotrophic lateral sclerosis. This study was therefore undertaken to evaluate the antidepressant-like effect of ceftriaxone in mice.Methods: Ceftriaxone was administered at three different doses (0.130, 0.195 and 0.260g/kg) to Swiss albino mice of either sex by intra peritoneal (i. p.) route. The period of immobility in control and drug-treated mice were recorded in forced swimming test (FST) and tail suspension test (TST). The antidepressant effect of ceftriaxone indicated by the decrease in duration of immobility was compared to that of fluoxetine (0.020 g/kg, i. p.).Results: Ceftriaxone decreased the duration of immobility in mice. It showed a significant dose-dependent antidepressant effect. The antidepressant effect of 0.260g/kg of ceftriaxone was comparable to that of fluoxetine in the TST but not in the FST.Conclusion: The results of the present study indicate antidepressant activity of Ceftriaxone. The study shows that ceftriaxone has additional action on the central nervous system other than neuroprotection. Ceftriaxone therapy in cases of encephalomeningitis and in various cases of hemorrhages in the brain can, therefore, prevent the development of depression in future


Author(s):  
Hansraj Kumar ◽  
Akash Chandra ◽  
Uma Shankar Prasad Keshri ◽  
Rajiv Kumar

Background: Depression is a group of disorders results from a combination of multiple etiologic factors- genetic, biochemical, psychodynamic and socio-environmental. A depression consists of following clinical features as sadness, apathy, changes in sleep pattern, impaired concentration, feeling of shame or guilt and thoughts of dying or death. Fluoxetine and riluzole both are used for the treatment of depression in human being. Fluoxetine is SSRI (selective serotonin reuptake inhibitors) and riluzole is anxiolytic and mood stabilizer.Methods: Healthy male albino rats weighing between 150-200 grams were taken for the present study. Study animals were divided into three groups randomly with each group consisting of ten animals. Drugs were powdered with help of mortar and pestle and mixed in gum acacia solution. Appropriate volume of the freshly prepared solution was administered orally daily between 9 am to 10 am to all animal as per their individual body weight. Group A administered 1ml of 0.9% normal saline orally and serves as control group. Group B administered 0.4 mg of fluoxetine orally. Group C administered 2 mg of riluzole orally. Animals were evaluated for antidepressant activity using model- forced swimming test.Results: The results in the forced swimming test were assessed by duration of immobility in last 4 minutes of total 6 minute test duration. Antidepressant activity is indicated by the reduction in the duration of immobility i.e. lesser the duration more the efficacy. The results have been expressed as mean±standard deviation of duration of immobility in seconds during 6 minute period.Conclusions: There was significant difference in antidepressant activity of fluoxetine with antidepressant activity of riluzole. Riluzole showed antidepressant activity after two weeks of starting the drugs.


Author(s):  
S. S. Torgal ◽  
Amitha N

Objective: Bisphosphonates are used for treating osteoporosis. Few studies have reported their effect on alterations in comorbid behaviour such as depression. Therefore, present study was performed to investigate the effects of bisphosphonate drugs on depression in adult male Wister rats and Swiss albino mice.Methods: The study was conducted on adult male Wister rats and Swiss albino mice, 36 of each type, equally divided into six groups. One group was classified as control group and the rest were treated as test groups. Initial photoperiod of 12 h was provided for acclimatization, prior to the start of the experiment. Drug administration was not performed in control group. Forced swimming test and tail suspension test were performed to investigate the antidepressant activity. Locomotor activity was performed to evaluate the action of drugs on the nervous system. Effects of the test drugs were compared with a standard drug—amitriptyline. Results were statistically evaluated by one-way analysis of variance followed by Bonferroni’s multiple comparison test. P≤0.05 was considered significant.Results: In forced swimming test, duration of immobility was significantly reduced in the standard and test drugs when compared to control group; however, it was not significant in all the four test groups as compared to that of amitriptyline-administered group (p>0.05). In tail suspension test, significant decrease (p<0.01) in the duration of immobility was observed with administration of drugs when compared to control group. Results of test groups were not found to be significant as compared to amitriptyline-treated group (p>0.05). Mean values of amitriptyline-, alendronate-, risedronate-, ibandronate-and etidronate-treated groups failed to show significant difference (p>0.05) when compared to control group suggesting homogeneity among the groups.Conclusion: Bisphosphonates appeared to have an antidepressant activity. More extensive research is required to substantiate and elucidate the role of bisphosphonates in behavioural disorders such as depression.


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