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College Trinity College
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  • Psychiatry
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  • Immunology
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    Keywords

  • Early Life Adversity
  • Epigenetics
  • Mood Disorders
  • Biomarkers
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  • Depressive disorders
  • Post-traumatic stress disorder
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  • Behavioural analysis
  • Cell culture
  • Confocal microscopy
  • Cross-sectional and cohort studies
  • Immunohistochemistry
  • Randomised control trials
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    Dr Stacey Kigar

    University Position
    Research Associate

    Interests

    I work at the interface of molecular biology, neuroimmunology, and psychiatry to reveal mechanistic underpinnings of stress susceptibility and resilience. I seek to understand why some individuals are more adversely affected by stress than others using a translational approach that capitalizes on my proficiency in both animal models and analysis of clinical biomarkers. My research specifically focuses on the molecular and cellular mechanisms by which early life stress is ‘encoded’ in the body given its well-known association with adult-onset psychopathologies. The ultimate goal for this work is to identify new therapeutic targets and diagnostic tools that will help people suffering from mental health disorders.

    Overview of research interests

    Key Publications

    B-cells are abnormal in psychosocial stress and regulate meningeal myeloid cell activation.

    DOI: http://doi.org/10.1016/j.bbi.2021.08.002
    Journal: Brain Behav Immun
    E-pub date: 1 Oct 2021
    Authors: M-E Lynall, SL Kigar, ML Lehmann, AE DePuyt, ZK Tuong, SJ Listwak, AG Elkahloun, ET Bullmore, M Herkenham, MR Clatworthy

    Decoding microglia responses to psychosocial stress reveals blood-brain barrier breakdown that may drive stress susceptibility.

    DOI: http://doi.org/10.1038/s41598-018-28737-8
    Journal: Sci Rep
    E-pub date: 26 Jul 2018
    Authors: ML Lehmann, TK Weigel, HA Cooper, AG Elkahloun, SL Kigar, M Herkenham

    Publications

    DNA topoisomerase Top3β is impacted by early life stress in the developing female and male rat brain.

    DOI: http://doi.org/10.1016/j.brainres.2023.148339
    Journal: Brain Res
    E-pub date: 15 Jun 2023
    Authors: A Cuarenta, SL Kigar, AP Keese, SE Guagliardo, L Chang, VP Bakshi, AP Auger

    CCR2 monocytes repair cerebrovascular damage caused by chronic social defeat stress.

    DOI: http://doi.org/10.1016/j.bbi.2022.01.011
    Journal: Brain Behav Immun
    E-pub date: 1 Mar 2022
    Authors: ML Lehmann, JD Samuels, SL Kigar, CN Poffenberger, ML Lotstein, M Herkenham

    Early life stress during the neonatal period alters social play and Line1 during the juvenile stage of development.

    DOI: http://doi.org/10.1038/s41598-021-82953-3
    Journal: Sci Rep
    E-pub date: 11 Feb 2021
    Authors: A Cuarenta, SL Kigar, IC Henion, L Chang, VP Bakshi, AP Auger

    Early life stress increases Line1 within the developing brain in a sex-dependent manner.

    DOI: http://doi.org/10.1016/j.brainres.2020.147123
    Journal: Brain Res
    E-pub date: 1 Dec 2020
    Authors: A Cuarenta, SL Kigar, IC Henion, KE Karls, L Chang, VP Bakshi, AP Auger

    N6-methyladenine is an epigenetic marker of mammalian early life stress.

    DOI: http://doi.org/10.1038/s41598-017-18414-7
    Journal: Sci Rep
    E-pub date: 22 Dec 2017
    Authors: SL Kigar, L Chang, CR Guerrero, JR Sehring, A Cuarenta, LL Parker, VP Bakshi, AP Auger

    Contributions of the adaptive immune system to mood regulation: Mechanisms and pathways of neuroimmune interactions.

    DOI: http://doi.org/10.1016/j.pnpbp.2016.09.003
    Journal: Prog Neuropsychopharmacol Biol Psychiatry
    E-pub date: 3 Oct 2017
    Authors: M Herkenham, SL Kigar

    Sex differences in Gadd45b expression and methylation in the developing rodent amygdala.

    DOI: http://doi.org/10.1016/j.brainres.2016.04.031
    Journal: Brain Res
    E-pub date: 1 Jul 2016
    Authors: SL Kigar, L Chang, MR Hayne, NT Karls, AP Auger