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It is well documented that 5-hydroxytryptamine3 (5-HT3) receptors are involved in the pathogenesis of schizophrenia and cognitive impairment. The purpose of this study was to assess the efficacy of ondansetron, a 5-HT3 receptor antagonist as an adjuvant agent in the treatment of chronic schizophrenia in particular for cognitive impairments. This(More)
Attention-deficit/hyperactivity disorder (ADHD) is the most common behavioral disorder in childhood, with an estimated prevalence worldwide of 7%-17% among school-aged children. Modafinil is a centrally acting agent that is structurally and pharmacologically different from stimulants such as amphetamine and methylphenidate. It has been reported that(More)
It was reported that ritanserin, a 5HT2A/2C antagonist, improves negative symptoms when added to neuroleptics in inpatients with predominantly negative symptoms. Nevertheless, the results of published studies are contradictory so far. This study was designed to investigate the effect of ritanserin added to risperidone as augmentation therapy in patients(More)
There is considerable incentive to develop new treatment strategies that effectively target cognitive deficits in schizophrenia. One of the theoretically promising novel treatment candidates is acetylcholinesterase inhibitors that increase the synaptic levels of cholinergic, nicotinic, and muscarinic receptor activity. The purpose of this study was to(More)
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