PMID- 25226879 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211021 IS - 2167-1044 (Print) IS - 2167-1044 (Electronic) IS - 2167-1044 (Linking) VI - 2013 IP - S4 DP - 2013 Oct 4 TI - The Role of BDNF-TrkB Signaling in the Pathogenesis of PTSD. LID - 006 [pii] AB - Posttraumatic Stress Disorder (PTSD) is a prevalent, chronic, and disabling anxiety disorder that may develop following exposure to a traumatic event. The majority of individuals with PTSD often have comorbid psychiatric conditions such as major depression, generalized anxiety disorder, and substance use disorders, and are at increased risk for suicide. Despite the public health significance of PTSD, relatively little is known about the etiology or pathophysiology of this disorder, and pharmacotherapy development to date has been largely opportunistic instead of mechanism-based. One promising target for modulation is Tropomyosin Receptor Kinase B (TrkB), the receptor for Brain-Derived Neurotrophic Factor (BDNF), a signaling pathway important for neuronal plasticity, survival, and growth. The following discusses how genetic and environmental alterations to this signaling pathway may contribute to anatomical and functional changes in the hippocampus, amygdala, anterior cingulate cortex, ventromedial prefrontal cortex, and the nucleus accumbens. Changes in these brain regions may in turn contribute to the predisposition to or maintenance of some of the clinical manifestations of PTSD, including intrusive memories, hyperarousal, increased fear, and emotional numbing. FAU - Green, Christopher R AU - Green CR AD - Molecular Imaging Program, Department of Psychiatry and Radiology, New York University School of Medicine, New York, USA. FAU - Corsi-Travali, Stefani AU - Corsi-Travali S AD - Molecular Imaging Program, Department of Psychiatry and Radiology, New York University School of Medicine, New York, USA. FAU - Neumeister, Alexander AU - Neumeister A AD - Molecular Imaging Program, Department of Psychiatry and Radiology, New York University School of Medicine, New York, USA ; Steven and Alexandra Cohen Veterans Center for the Study of Posttraumatic Stress and Traumatic Brain Injury, Department of Psychiatry, New York University Langone Medical Center, New York, USA. LA - eng GR - R01 MH096876/MH/NIMH NIH HHS/United States GR - R21 MH085627/MH/NIMH NIH HHS/United States GR - R21 MH096105/MH/NIMH NIH HHS/United States PT - Journal Article PL - United States TA - J Depress Anxiety JT - Journal of depression & anxiety JID - 101609478 PMC - PMC4161201 MID - NIHMS534080 OTO - NOTNLM OT - Bdnf-TrkB Signaling OT - Neurotrophic processes OT - Pathogenesis OT - Posttraumatic stress disorder COIS- Conflict of Interest/Financial Disclosures The authors report no conflicts of interest relevant to this article. EDAT- 2014/09/18 06:00 MHDA- 2014/09/18 06:01 PMCR- 2014/09/11 CRDT- 2014/09/18 06:00 PHST- 2014/09/18 06:00 [entrez] PHST- 2014/09/18 06:00 [pubmed] PHST- 2014/09/18 06:01 [medline] PHST- 2014/09/11 00:00 [pmc-release] AID - 006 [pii] AID - 10.4172/2167-1044.S4-006 [doi] PST - ppublish SO - J Depress Anxiety. 2013 Oct 4;2013(S4):006. doi: 10.4172/2167-1044.S4-006.