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Abstract
Introduction: Despite the availability of several treatment options for bipolar disorder (BD), patients suffer from chronic, subsyndromal symptoms, quite frequent polarity shifts, cognitive impairment and poor community function. Overall, the current treatment outcomes for BD highlight the need to develop targeted, more effective and safe treatments.
Areas covered: This review focuses on compounds currently under investigation for BD, covering compounds tested through animal studies to those in Phase II clinical trials over the past 5 years. These drugs concern all phases of BD treatment, that is, mania, depression, maintenance, and cognitive dysfunction.
Expert opinion: Limitations exist in applying valid preclinical bipolar models and study designs. Research emphasis is given mainly on bipolar depression, with few compounds showing some evidence of efficacy. Non-effectiveness in current studies of mania and maintenance treatment reflects the need for novel compounds. Glycogen synthase kinase 3, casein kinase 1, inositol monophosphatase inhibition, histone deacetylase inhibition pathways are known targets that should proceed from preclinical to the clinical trial level.
Declaration of interest
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
Notes
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