PMID- 26555428 OWN - NLM STAT- MEDLINE DCOM- 20161019 LR - 20181113 IS - 1873-3360 (Electronic) IS - 0306-4530 (Print) IS - 0306-4530 (Linking) VI - 63 DP - 2016 Jan TI - Intensity of anxiety is modified via complex integrative stress circuitries. PG - 351-61 LID - S0306-4530(15)00964-6 [pii] LID - 10.1016/j.psyneuen.2015.10.016 [doi] AB - Escalation of anxious behavior while environmentally and socially relevant contextual events amplify the intensity of emotional response produces a testable gradient of anxiety shaped by integrative circuitries. Apprehension of the Stress-Alternatives Model apparatus (SAM) oval open field (OF) is measured by the active latency to escape, and is delayed by unfamiliarity with the passageway. Familiar OF escape is the least anxious behavior along the continuum, which can be reduced by anxiolytics such as icv neuropeptide S (NPS). Social aggression increases anxiousness in the SAM, reducing the number of mice willing to escape by 50%. The apprehension accompanying escape during social aggression is diminished by anxiolytics, such as exercise and corticotropin releasing-factor receptor 1 (CRF1) antagonism, but exacerbated by anxiogenic treatment, like antagonism of alpha2-adrenoreceptors. What is more, the anxiolytic CRF1 and anxiogenic alpha2-adrenoreceptor antagonists also modify behavioral phenotypes, with CRF1 antagonism allowing escape by previously submissive animals, and alpha2-adrenoreceptor antagonism hindering escape in mice that previously engaged in it. Gene expression of NPS and brain-derived neurotrophic factor (BDNF) in the central amygdala (CeA), as well as corticosterone secretion, increased concomitantly with the escalating anxious content of the mouse-specific anxiety continuum. The general trend of CeA NPS and BDNF expression suggested that NPS production was promoted by increasing anxiousness, and that BDNF synthesis was associated with learning about ever-more anxious conditions. The intensity gradient for anxious behavior resulting from varying contextual conditions may yield an improved conceptualization of the complexity of mechanisms producing the natural continuum of human anxious conditions, and potential therapies that arise therefrom. CI - Copyright (c) 2015 Elsevier Ltd. All rights reserved. FAU - Smith, Justin P AU - Smith JP AD - Department of Biology, University of South Dakota, Vermillion, SD 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA; Veterans Affairs Research Service, Sioux Falls VA Health Care System, Sioux Falls, SD 57105, USA; Institute of Possibility, 322 E. 8th Street, Suite 302, Sioux Falls, SD 57103, USA; Sanford Health, 2301 E. 60th St. N., Sioux Falls, SD 57104, USA. FAU - Prince, Melissa A AU - Prince MA AD - Department of Biology, University of South Dakota, Vermillion, SD 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA. FAU - Achua, Justin K AU - Achua JK AD - Department of Biology, University of South Dakota, Vermillion, SD 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA; Veterans Affairs Research Service, Sioux Falls VA Health Care System, Sioux Falls, SD 57105, USA. FAU - Robertson, James M AU - Robertson JM AD - Department of Biology, University of South Dakota, Vermillion, SD 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA. FAU - Anderson, Raymond T AU - Anderson RT AD - Department of Biology, University of South Dakota, Vermillion, SD 57069, USA; Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Dr., Morgantown, WV 26506, USA. FAU - Ronan, Patrick J AU - Ronan PJ AD - Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA; Veterans Affairs Research Service, Sioux Falls VA Health Care System, Sioux Falls, SD 57105, USA; Avera Research Institute, Avera McKennan Hospital & University Health Center, Sioux Falls, SD 57105, USA; Laboratory for Clinical and Translational Research in Psychiatry, Department of Veterans Affairs Medical Center, Denver, CO 80220, USA; Department of Psychiatry, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA. FAU - Summers, Cliff H AU - Summers CH AD - Department of Biology, University of South Dakota, Vermillion, SD 57069, USA; Neuroscience Group, Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA. Electronic address: Cliff@USD.Edu. LA - eng GR - R15 MH104485/MH/NIMH NIH HHS/United States GR - R15MH104485/MH/NIMH NIH HHS/United States GR - R25 DA033674/DA/NIDA NIH HHS/United States GR - P20 RR015567/RR/NCRR NIH HHS/United States GR - P20 RR15567/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20151024 PL - England TA - Psychoneuroendocrinology JT - Psychoneuroendocrinology JID - 7612148 RN - 0 (Anti-Anxiety Agents) RN - 0 (Receptors, Corticotropin-Releasing Hormone) SB - IM MH - Aggression/drug effects/psychology MH - Animals MH - Anti-Anxiety Agents/pharmacology MH - Anxiety/pathology/physiopathology/*psychology MH - Behavior, Animal/drug effects MH - Escape Reaction/drug effects MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred ICR MH - Nerve Net/drug effects/metabolism/*physiopathology MH - Physical Conditioning, Animal/physiology MH - Receptors, Corticotropin-Releasing Hormone/antagonists & inhibitors MH - Severity of Illness Index MH - Stress, Psychological/pathology/physiopathology/*psychology PMC - PMC4838407 MID - NIHMS736636 OTO - NOTNLM OT - CRF(1) receptors OT - Continuum OT - Exercise OT - Gradient OT - NPS OT - alpha(2) receptors EDAT- 2015/11/12 06:00 MHDA- 2016/11/12 06:00 PMCR- 2017/01/01 CRDT- 2015/11/12 06:00 PHST- 2015/07/07 00:00 [received] PHST- 2015/09/10 00:00 [revised] PHST- 2015/10/19 00:00 [accepted] PHST- 2015/11/12 06:00 [entrez] PHST- 2015/11/12 06:00 [pubmed] PHST- 2016/11/12 06:00 [medline] PHST- 2017/01/01 00:00 [pmc-release] AID - S0306-4530(15)00964-6 [pii] AID - 10.1016/j.psyneuen.2015.10.016 [doi] PST - ppublish SO - Psychoneuroendocrinology. 2016 Jan;63:351-61. doi: 10.1016/j.psyneuen.2015.10.016. Epub 2015 Oct 24.