May 11, 2015

Cognitive enhancing agents in schizophrenia and bipolar disorder

European Neuropsychopharmacology : the Journal of the European College of Neuropsychopharmacology
A VreekerRené S Kahn

Abstract

Cognitive dysfunction is a core feature of schizophrenia and is also present in bipolar disorder (BD). Whereas decreased intelligence precedes the onset of psychosis in schizophrenia and remains relatively stable thereafter; high intelligence is a risk factor for bipolar illness but cognitive function decreases after onset of symptoms. While in schizophrenia, many studies have been conducted on the development of cognitive enhancing agents; in BD such studies are almost non-existent. This review focuses on the pharmacological agents with putative effects on cognition in both schizophrenia and bipolar illness; specifically agents targeting the dopaminergic, cholinergic and glutamatergic neurotransmitter pathways in schizophrenia and the cognitive effects of lithium, anticonvulsants and antipsychotics in BD. In the final analysis we conclude that cognitive enhancing agents have not yet been produced convincingly for schizophrenia and have hardly been studied in BD. Importantly, studies should focus on other phases of the illness. To be able to treat cognitive deficits effectively in schizophrenia, patients in the very early stages of the illness, or even before - in the ultra-high risk stages - should be targeted. In contrast, co...Continue Reading

  • References140
  • Citations15

References

  • References140
  • Citations15

Mentioned in this Paper

Topiramate
Study
Biochemical Pathway
Dopamine Agonists [MoA]
Cholinergic Agents
Exertion
Anticonvulsants
Olanzapine
Prefrontal Cortex
Dihydrexidine

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