ArticleCentral nervous system agents in medicinal chemistry2026
Study of the Antidepressant Effects of the Combination of Agmatine and Melatonin Following Restraint Stress in Mice: the Role of Oxidative Factors.
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Abstract
objectiveMajor Depressive Disorder (MDD) is a psychiatric disorder that has a tight connection to stressful experiences, decreased levels of endogenous antioxidants and enhanced levels of oxidative stress. We drafted this research to define the results of combining agmatine and melatonin on stress-induced depression in mice.
methodsExperimental groups included the non-stressed group treated with vehicle (ethanol at a concentration of 0.0005%), stressed vehicle (ethanol at a concentration of 0.0005%)-treated group, group treated with fluoxetine (10 mg/kg/day), group treated with melatonin (10 mg/kg/day), group treated with agmatine (1 mg/kg/day), group receiving a combination of melatonin (10 mg/kg/day) and agmatine (1 mg/kg/day). The animals were subjected to restraint stress for two hours daily for a duration of one week, concurrently with the daily oral administration of agents through drinking water. Open field test and forced swimming test were operated on the 8th day. The oxidative stress markers were measured in the mice hippocampus.
resultsStress led to the elevation of immobility time. The combination group showed a significant effect in comparison to the agmatine and melatonin groups. The combination of melatonin and agmatine was successful in the elevation of hippocampus catalase activity; and this effect was comparable in the fluoxetine group. We observed enhancement of superoxide dismutase activity in treatment groups and reduction in
conclusionA combination of agmatine and melatonin improves stress-induced depression more effectively than each alone, which may result from suppressing oxidative stress.
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