Pharmacological Treatment of Cognitive Symptoms in Major Depressive Disorder

Title:Pharmacological Treatment of Cognitive Symptoms in Major Depressive Disorder

Volume: 16 Issue: 8

Author(s): Zihang Pan, Radu C. Grovu, Danielle S. Cha, Nicole E. Carmona, Mehala Subramaniapillai, Margarita Shekotikhina, Carola Rong, Yena Lee and Roger S. McIntyre*

Affiliation:

• Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON,Canada

Keywords: Cognition, domain-based approach, inflammation, Major Depressive Disorder (MDD), pharmacological strategies, unmet needs.

Abstract: Background: Cognitive dysfunction is a core transdiagnostic domain of Major Depressive Disorder (MDD) and is a principal determinant of functional recovery. However, it has been insufficiently targeted within the current therapeutic framework for MDD.

Objective: To highlight these unmet cognitive needs in MDD.

Method: An article search was conducted using PubMed from inception to November 2016: Major Depressive Disorder (and/or variant) was cross-referenced with the following terms: antidepressants, augmentation, cognition, cognitive deficits, cognitive dysfunction, functional outcomes, mechanism of action, and treatment. Articles informed by observational studies, clinical trials, and review articles relevant to the discussion of cognition and cognitive impairment in MDD were included for review. Additional terms and citations previously not identified in the initial search were obtained from a manual review of article reference lists.

Results: Cognitive deficits in MDD are replicable, non-specific, and clinically significant. Abnormalities in the domains of learning/memory, executive function, attention, concentration, and processing speed are consistently reported. Only two antidepressants (i.e., duloxetine and vortioxetine) have established procognitive effects utilizing rigorous methodology in MDD. Most antidepressants improve cognitive function(s), but the extent to which they directly exert pro-cognitive effects is not yet understood.

Conclusion: Cognitive dysfunction in MDD is a principal determinant of patient-reported outcomes (e.g., psychosocial function). Healthcare providers are encouraged to screen for cognitive dysfunction in MDD and familiarize themselves with the efficacy profiles of antidepressants on disparate cognitive domains.

Cite this article as:

Pan Zihang, Grovu C. Radu, Cha S. Danielle, Carmona E. Nicole , Subramaniapillai Mehala, Shekotikhina Margarita, Rong Carola, Lee Yena and McIntyre S. Roger*, Pharmacological Treatment of Cognitive Symptoms in Major Depressive Disorder, CNS & Neurological Disorders - Drug Targets 2017; 16 (8) . https://dx.doi.org/10.2174/1871527316666170919115100