PMID- 28598698 OWN - NLM STAT- MEDLINE DCOM- 20180622 LR - 20210924 IS - 1744-8360 (Electronic) IS - 1473-7175 (Linking) VI - 17 IP - 8 DP - 2017 Aug TI - Beyond serotonin: newer antidepressants in the future. PG - 777-790 LID - 10.1080/14737175.2017.1341310 [doi] AB - There are numerous antidepressants for the treatment of major depressive disorder (MDD) on the market. However, inadequate treatment response, therapeutic lag between drug administration and the onset of clinical improvement, and safety/tolerability issues with the use of contemporary antidepressants have accelerated the search for newer antidepressants with novel mechanisms of action. Areas covered: The authors review novel antidepressants with rapid efficacy for diverse MDD symptoms and have fewer adverse effects (AEs). Mechanisms of action for novel therapeutic molecules are through glutamatergic, opiate, cholinergic receptors and neuroplasticity. We enumerate results from human trials with novel agents in all phases, highlighting proximity to approval and therapeutic potential based on quality of evidence. Expert commentary: There is a huge unmet need to diversify conventional antidepressant targets. Glutamatergic and opiate agents may be most promising among newer therapeutic agents. It is also important to develop advanced but flexible synergistic treatment strategies with newer therapeutic agents that are usable in routine clinical practice. This would include combining newer molecules with existing antidepressants and using molecules that target specific symptom dimensions of MDD. These strategies would lead to a systematic approach to tackle treatment resistant depression (TRD) and treatment of residual symptoms in partially remitted MDD. FAU - Rakesh, Gopalkumar AU - Rakesh G AD - a Department of Psychiatry and Behavioral Sciences , Duke University Medical Center , Durham , NC , USA. FAU - Pae, Chi-Un AU - Pae CU AD - a Department of Psychiatry and Behavioral Sciences , Duke University Medical Center , Durham , NC , USA. AD - b Department of Psychiatry , The Catholic University of Korea College of Medicine , Seoul , Republic of Korea. FAU - Masand, Prakash S AU - Masand PS AD - c Academic Medicine Education Institute , Duke-NUS Medical School , Singapore , Singapore. AD - d Global Medical Education , New York , NY , USA. LA - eng PT - Journal Article PT - Review DEP - 20170619 PL - England TA - Expert Rev Neurother JT - Expert review of neurotherapeutics JID - 101129944 RN - 0 (Antidepressive Agents) SB - IM MH - Antidepressive Agents/*therapeutic use MH - Clinical Trials as Topic MH - Depressive Disorder, Major/*drug therapy MH - Drug Discovery/*trends MH - Drug Evaluation MH - Drug Therapy, Combination MH - Humans MH - *Molecular Targeted Therapy OTO - NOTNLM OT - Antidepressants OT - beyond OT - future OT - glutamate OT - neuroplasticity OT - serotonin EDAT- 2017/06/10 06:00 MHDA- 2018/06/23 06:00 CRDT- 2017/06/10 06:00 PHST- 2017/06/10 06:00 [pubmed] PHST- 2018/06/23 06:00 [medline] PHST- 2017/06/10 06:00 [entrez] AID - 10.1080/14737175.2017.1341310 [doi] PST - ppublish SO - Expert Rev Neurother. 2017 Aug;17(8):777-790. doi: 10.1080/14737175.2017.1341310. Epub 2017 Jun 19.