Depression is among the most prevalent diseases worldwide. Researchers have identified a link between depression and different types of memory loss, including short term memory (STM). Also, the memory impairment in depression is a function of severity. This study was conducted to evaluate the effect of antidepressant medication on short term memory in chronic mild stress (CMS) mouse model of depression. A total of eighteen female mice were randomly divided into three groups of six mice each (n=6). Group I served as normal control, group II were exposed to CMS for 14 days, group III were exposed to CMS for 14 days, and thereafter treated with paroxetine at a dose of 20 mg/kg for 14 days. Short term memory was assessed using batteries of cognitive tests including the Y-maze and novel object recognition. Further antidepressant effect was measured using the tail suspension test (TST). The results showed that paroxetine at 20 mg/kg significantly improved the short term memory of the depressed female mice (p<0.05) in the Y-maze and novel object (recognition) tasks after CMS. Therefore, paroxetine might be used to enhance short term memory in depressed individuals, although clinical studies are required to confirm this finding.
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