The Impact of Antidepressant Treatment on Brain-derived Neurotrophic Factor Level: An Evidence-based Approach Through Systematic Review and Meta-analysis

Overview

Journal Indian J Pharmacol

Specialty Pharmacology

Date 2017 Oct 17

PMID 29033483

Citations 14

Authors

Vijayakumar Arumugam

Vini Susan John

Nisha Augustine

Taniya Jacob

Sagar Maliakkal Joy

Suchandra Sen

Tuhinadri Sen

Affiliations

Soon will be listed here.

Abstract

Objectives: Antidepressant treatment alters brain-derived neurotrophic factor (BDNF) levels, but it is not well established whether BDNF can be used as a marker to prove the efficacy of antidepressant treatment. The present systematic review and meta-analysis aim at assessing the influence of antidepressant treatment on BDNF level and the Hamilton Depression Rating Scale (HDRS) score, thereby to establish the rationale of utilizing BDNF as a predictive biomarker and HDRS score as an indicator for antidepressant treatment efficacy.

Materials And Methods: Search was conducted in PubMed, Science Direct, and Cochrane databases using the key words "BDNF" and "Depression" and "Antidepressants." On the basis of the inclusion and exclusion criteria, studies were filtered and finally 6 randomized controlled trials were shortlisted.

Results: Comparison of serum BDNF level before and after antidepressant treatment was performed and the result showed that antidepressant treatment does not significantly affect the BDNF levels (confidence interval [CI]: -0.483 to 0.959; standard mean difference [SMD]: 0.238, = 0.518). Egger's regression test ( = 0.455) and heterogeneity test ( = 88.909%) were done. Similarly, comparison of HDRS scores before and after antidepressant treatment indicated improvement in HDRS score suggesting positive outcome (CI: 1.719 to 3.707; SMD: 2.713, < 0.001). Egger's regression test ( = 0.1417) and heterogeneity test ( = 89.843%) were performed. Publication bias was observed by funnel plot.

Conclusion: Changes in BDNF levels do not occur uniformly for all the antidepressants. Hence, to use BDNF as a biomarker, it needs to be seen whether the same is true for all antidepressants.

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