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PTSD genetics

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https://www.readbyqxmd.com/read/28813320/the-genetics-and-epigenetics-of-ptsd-overview-recent-advances-and-future-directions
#1
REVIEW
Christina M Sheerin, Mackenzie J Lind, Kaitlin E Bountress, Nicole R Nugent, Ananda B Amstadter
This paper provides a brief summary and commentary on the growing literature and current developments related to the genetic underpinnings of posttraumatic stress disorder (PTSD). We first briefly provide an overview of the behavioral genetic literature on PTSD, followed by a short synopsis of the substantial candidate gene literature with a focus on genes that have been meta-analyzed. We then discuss the genome-wide association studies (GWAS) that have been conducted, followed by an introduction to other molecular platforms used in PTSD genomic studies, such as epigenetic and expression approaches...
April 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28768717/formin-2-links-neuropsychiatric-phenotypes-at-young-age-to-an-increased-risk-for-dementia
#2
Roberto Carlos Agís-Balboa, Paulo Pinhero, Nelson Rebola, Cemil Kerimoglu, Eva Benito, Michael Gertig, Sanaz Bahari-Javan, Gaurav Jain, Susanne Burkhardt, Ivana Delalle, Alexander Jatzko, Markus Dettenhofer, Patricia A Zunszain, Andrea Schmitt, Peter Falkai, Julius C Pape, Elisabeth B Binder, Christophe Mulle, Andre Fischer, Farahnaz Sananbenesi
Age-associated memory decline is due to variable combinations of genetic and environmental risk factors. How these risk factors interact to drive disease onset is currently unknown. Here we begin to elucidate the mechanisms by which post-traumatic stress disorder (PTSD) at a young age contributes to an increased risk to develop dementia at old age. We show that the actin nucleator Formin 2 (Fmn2) is deregulated in PTSD and in Alzheimer's disease (AD) patients. Young mice lacking the Fmn2 gene exhibit PTSD-like phenotypes and corresponding impairments of synaptic plasticity, while the consolidation of new memories is unaffected...
August 2, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28746747/association-of-posttraumatic-stress-disorder-with-rs2267735-in-the-adcyap1r1-gene-a-meta-analysis
#3
Mackenzie J Lind, Marisa E Marraccini, Christina M Sheerin, Kaitlin Bountress, Silviu-Alin Bacanu, Ananda B Amstadter, Nicole R Nugent
Recent studies point to the potential role of the (pituitary) adenylate cyclase activating polypeptide receptor 1 (ADCYAP1R1) gene, which has been implicated in stress response, in posttraumatic stress disorder (PTSD). Multiple genetic association studies have examined potential PTSD risk related to this gene, with mixed results. We conducted a meta-analysis of rs2267735 in ADCYAP1R1 in PTSD. A literature search was conducted using PubMed and PsycINFO, resulting in nine studies that met criteria for inclusion in analysis...
August 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/28686326/single-nucleotide-polymorphisms-in-genes-related-to-the-hypothalamic-pituitary-adrenal-axis-as-risk-factors-for-posttraumatic-stress-disorder
#4
REVIEW
Carolina M Carvalho, Bruno M Coimbra, Vanessa K Ota, Marcelo F Mello, Sintia I Belangero
Posttraumatic stress disorder (PTSD) is a common psychiatric disorder. The etiology of PTSD is multifactorial, depending on many environmental and genetic risk factors, and the exposure to life or physical integrity-threatening events. Several studies have shown significant correlations of many neurobiological findings with PTSD. Hypothalamic-pituitary-adrenal (HPA) axis dysfunction is strongly correlated with this disorder. One hypothesis is that HPA axis dysfunction may precede the traumatic event, suggesting that genes expressed in the HPA axis may be involved in the development of PTSD...
July 7, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/28681202/genetic-variability-of-interleukin-1-beta-as-prospective-factor-from-developing-post-traumatic-stress-disorder
#5
Lilit Hovhannisyan, Ani Stepanyan, Arsen Arakelyan
Individual susceptibility to post-traumatic stress disorder (PTSD) is conditioned by genetic factors, and association between this disorder and polymorphisms of several genes have been shown. The aim of this study was to explore a potential association between single nucleotide polymorphisms (SNP) of the IL-1β gene (IL1B) and PTSD. In genomic DNA samples of PTSD-affected and healthy subjects, the rs16944, rs1143634, rs2853550, rs1143643, and rs1143633 SNPs of IL1B gene have been genotyped. The results obtained demonstrated that IL1B rs1143633*C and rs16944*A minor allele frequency were significantly lower in patients than in controls...
July 5, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28675393/erbb4-signaling-in-the-prelimbic-cortex-regulates-fear-expression
#6
Y-H Chen, Y-J Lan, S-R Zhang, W-P Li, Z-Y Luo, S Lin, J-P Zhuang, X-W Li, S-J Li, J-M Yang, T-M Gao
Many psychiatric diseases such as post-traumatic stress disorder (PTSD) are characterized by abnormal processing of emotional stimuli particularly fear. The medial prefrontal cortex (mPFC) is critically involved in fear expression. However, the molecular mechanisms underlying this process are largely unknown. Neuregulin-1 (NRG1) reportedly regulates pyramidal neuronal activity via ErbB4 receptors, which are abundant in parvalbumin (PV)-expressing interneurons in the PFC. In this study, we aimed to determine how NRG1/ErbB4 signaling in the mPFC modulates fear expression and found that tone-cued fear conditioning increased NRG1 expression in the mPFC...
July 4, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28594439/genetic-and-psychosocial-predictors-of-alcohol-use-trajectories-among-disaster-exposed-adolescents
#7
Kaitlin Bountress, Carla Kmett Danielson, Vernell Williamson, Vladimir Vladmirov, Joel Gelernter, Kenneth Ruggiero, Ananda Amstadter
BACKGROUND AND OBJECTIVES: Adolescent alcohol misuse is associated with numerous long-term adverse outcomes, so we examined predictors of alcohol use among disaster-exposed adolescents, a group at-risk for alcohol misuse. METHODS: The current study (n = 332) examined severity of tornado-related exposure, posttraumatic stress disorder (PTSD) symptoms, emotional support, and a genetic risk sum score (GRSS) as predictors of alcohol use trajectories. RESULTS: Severity of exposure interacted with the GRSS to predict both intercept (12-month follow up quantity of alcohol use) and growth rate...
June 8, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28579519/contributions-of-polygenic-risk-for-obesity-to-ptsd-related-metabolic-syndrome-and-cortical-thickness
#8
Erika J Wolf, Danielle R Miller, Mark W Logue, Jennifer Sumner, Tawni B Stoop, Elizabeth C Leritz, Jasmeet P Hayes, Annjanette Stone, Steven A Schichman, Regina E McGlinchey, William P Milberg, Mark W Miller
BACKGROUND: Research suggests that posttraumatic stress disorder (PTSD) is associated with metabolic syndrome (MetS) and that PTSD-associated MetS is related to decreased cortical thickness. However, the role of genetic factors in these associations is unclear. This study evaluated contributions of polygenic obesity risk and PTSD to MetS and of MetS and polygenic obesity risk to cortical thickness. METHODS: 196 white, non-Hispanic veterans of the wars in Iraq and Afghanistan underwent clinical diagnostic interviews, physiological assessments, and genome-wide genotyping; 168 also completed magnetic resonance imaging scans...
October 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28555114/attitudes-about-future-genetic-testing-for-posttraumatic-stress-disorder-and-addiction-among-community-based-veterans
#9
Michelle R Lent, Stuart N Hoffman, H Lester Kirchner, Thomas G Urosevich, Joseph J Boscarino, Joseph A Boscarino
This study explored attitudes toward hypothetical genetic testing for posttraumatic stress disorder (PTSD) and addiction among veterans. We surveyed a random sample of community-based veterans (n = 700) by telephone. One year later, we asked the veterans to provide a DNA sample for analysis and 41.9% of them returned the DNA samples. Overall, most veterans were not interested in genetic testing neither for PTSD (61.7%) nor for addiction (68.7%). However, bivariate analyses suggested there was an association between having the condition of interest and the likelihood of genetic testing on a 5-point scale (p < 0...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28508360/genome-to-phenome-a-systems-biology-approach-to-ptsd-using-an-animal-model
#10
Nabarun Chakraborty, James Meyerhoff, Marti Jett, Rasha Hammamieh
Post-traumatic stress disorder (PTSD) is a debilitating illness that imposes significant emotional and financial burdens on military families. The understanding of PTSD etiology remains elusive; nonetheless, it is clear that PTSD is manifested by a cluster of symptoms including hyperarousal, reexperiencing of traumatic events, and avoidance of trauma reminders. With these characteristics in mind, several rodent models have been developed eliciting PTSD-like features. Animal models with social dimensions are of particular interest, since the social context plays a major role in the development and manifestation of PTSD...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28494120/posttraumatic-stress-disorder-symptom-severity-is-associated-with-reduced-default-mode-network-connectivity-in-individuals-with-elevated-genetic-risk-for-psychopathology
#11
Danielle R Miller, Mark W Logue, Erika J Wolf, Hannah Maniates, Meghan E Robinson, Jasmeet P Hayes, Annjanette Stone, Steven Schichman, Regina E McGlinchey, William P Milberg, Mark W Miller
BACKGROUND: Accumulating evidence suggests that posttraumatic stress disorder (PTSD) is associated with disrupted default mode network (DMN) connectivity, but findings across studies have not been uniform. Individual differences in relevant genes may account for some of the reported variability in the relationship between DMN connectivity and PTSD. In this study, we investigated this possibility using genome-wide association study (GWAS) derived polygenic risk scores (PRSs) for relevant psychiatric traits...
July 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28439101/largest-gwas-of-ptsd-n-20%C3%A2-070-yields-genetic-overlap-with-schizophrenia-and-sex-differences-in-heritability
#12
L E Duncan, A Ratanatharathorn, A E Aiello, L M Almli, A B Amstadter, A E Ashley-Koch, D G Baker, J C Beckham, L J Bierut, J Bisson, B Bradley, C-Y Chen, S Dalvie, L A Farrer, S Galea, M E Garrett, J E Gelernter, G Guffanti, M A Hauser, E O Johnson, R C Kessler, N A Kimbrel, A King, N Koen, H R Kranzler, M W Logue, A X Maihofer, A R Martin, M W Miller, R A Morey, N R Nugent, J P Rice, S Ripke, A L Roberts, N L Saccone, J W Smoller, D J Stein, M B Stein, J A Sumner, M Uddin, R J Ursano, D E Wildman, R Yehuda, H Zhao, M J Daly, I Liberzon, K J Ressler, C M Nievergelt, K C Koenen
The Psychiatric Genomics Consortium-Posttraumatic Stress Disorder group (PGC-PTSD) combined genome-wide case-control molecular genetic data across 11 multiethnic studies to quantify PTSD heritability, to examine potential shared genetic risk with schizophrenia, bipolar disorder, and major depressive disorder and to identify risk loci for PTSD. Examining 20 730 individuals, we report a molecular genetics-based heritability estimate (h(2)SNP) for European-American females of 29% that is similar to h(2)SNP for schizophrenia and is substantially higher than h(2)SNP in European-American males (estimate not distinguishable from zero)...
April 25, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28430712/apolipoprotein-e-variants-and-genetic-susceptibility-to-combat-related-post-traumatic-stress-disorder-a-meta-analysis
#13
Yang Roby
BACKGROUND: Apolipoprotein E (APOE) has recently been studied as a risk factor for association with developing combat-related post-traumatic stress disorder (PTSD) in the military population. These studies have yielded inconsistent findings. The present study carried out a meta-analysis to establish whether the APOE polymorphism confers increased susceptibility to combat-related PTSD. METHODS: PubMed, Medline, Embase, PsycInfo, and Google Scholar were searched for potential publications relating to patients with PTSD in military settings with combat exposure...
August 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28398343/large-scale-interaction-effects-reveal-missing-heritability-in-schizophrenia-bipolar-disorder-and-posttraumatic-stress-disorder
#14
H J Woo, C Yu, K Kumar, J Reifman
Genetic susceptibility factors behind psychiatric disorders typically contribute small effects individually. A possible explanation for the missing heritability is that the effects of common variants are not only polygenic but also non-additive, appearing only when interactions within large groups are taken into account. Here, we tested this hypothesis for schizophrenia (SZ) and bipolar disorder (BP) disease risks, and identified genetic factors shared with posttraumatic stress disorder (PTSD). When considered independently, few single-nucleotide polymorphisms (SNPs) reached genome-wide significance...
April 11, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28377990/the-effect-of-an-adverse-psychological-environment-on-salivary-cortisol-levels-in-the-elderly-differs-by-5-httlpr-genotype
#15
Marie-Laure Ancelin, Jacqueline Scali, Joanna Norton, Karen Ritchie, Anne-Marie Dupuy, Isabelle Chaudieu, Joanne Ryan
BACKGROUND: An adverse psychological environment (e.g. stressful events or depression) has been shown to influence basal cortisol levels and cortisol response to stress. This differs depending on the adverse stimuli, but also varies across individuals and may be influenced by genetic predisposition. An insertion/deletion polymorphism in the serotonin transporter gene (5-HTTLPR) is a strong candidate in this regard. OBJECTIVE: To investigate how stressful life events and depression are associated with diurnal cortisol levels in community-dwelling elderly and determine whether this varies according to genetic variability in the 5-HTTLPR...
December 2017: Neurobiology of Stress
https://www.readbyqxmd.com/read/28374949/post-traumatic-stress-disorder-and-beyond-an-overview-of-rodent-stress-models
#16
REVIEW
Johanna Schöner, Andreas Heinz, Matthias Endres, Karen Gertz, Golo Kronenberg
Post-traumatic stress disorder (PTSD) is a psychiatric disorder of high prevalence and major socioeconomic impact. Patients suffering from PTSD typically present intrusion and avoidance symptoms and alterations in arousal, mood and cognition that last for more than 1 month. Animal models are an indispensable tool to investigate underlying pathophysiological pathways and, in particular, the complex interplay of neuroendocrine, genetic and environmental factors that may be responsible for PTSD induction. Since the 1960s, numerous stress paradigms in rodents have been developed, based largely on Seligman's seminal formulation of 'learned helplessness' in canines...
April 4, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28364364/possible-reversal-of-ptsd-related-dna-methylation-by-sympathetic-blockade
#17
REVIEW
Eugene G Lipov, Kenneth Candido, Elspeth C Ritchie
Studies have shown that brain-derived neurotrophic factor (BDNF) level increase is associated with post-traumatic stress disorder (PTSD) risk. BDNF may be a "missing-link" that mediates the interaction between genetics, environment, and the sympathetic system. Trauma has been shown to induce DNA methylation that in turn can increase BDNF concentration due to increased gene expression. Therapies that focus on the reduction of beta-NGF (BNGF) levels may impact PTSD symptoms. The focus of this paper is to discuss possible effect of stellate ganglion block (SGB) on epigenetic changes noted with PTSD mediated by BDNF and NGF...
March 31, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28293323/effect-of-sanitary-environmental-conditions-of-diabetic-hypertension-incidence-in-displaced-persons
#18
Muamer Muraspahić, Isaja Kastrat, Semsudin Plojović, Mirsad Imamovic, Sonja Ketin, Rade Biocanin
BACKGROUND: The abnormal conditions of life and genetic factors often play a major role in the incidence of "diabetes - diabetes", heart disease and vascular disease, jaundice and posttraumatic stress. AIM: Trauma and posttraumatic stress are most common in the displaced persons, and the focus of this paper is to focus on this issue regarding cases in former Yugoslavia, and now in our country. These diseases are caused by increased beta-cell sensitivity to viruses, the development of autoimmune antibodies attacking their pancreas cells, degenerative changes in cells that result in the change of structure and of insulin production...
March 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28273291/an-integrated-neuroscience-perspective-on-formulation-and-treatment-planning-for-posttraumatic-stress-disorder-an-educational-review
#19
REVIEW
David A Ross, Melissa R Arbuckle, Michael J Travis, Jennifer B Dwyer, Gerrit I van Schalkwyk, Kerry J Ressler
Importance: Posttraumatic stress disorder (PTSD) is a common psychiatric illness, increasingly in the public spotlight in the United States due its prevalence in the soldiers returning from combat in Iraq and Afghanistan. This educational review presents a contemporary approach for how to incorporate a modern neuroscience perspective into an integrative case formulation. The article is organized around key neuroscience "themes" most relevant for PTSD. Within each theme, the article highlights how seemingly diverse biological, psychological, and social perspectives all intersect with our current understanding of neuroscience...
April 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28262266/ptsd-in-court-ii-risk-factors-endophenotypes-and-biological-underpinnings-in-ptsd
#20
REVIEW
Gerald Young
The second article in the series of three for the journal on "PTSD in Court" especially concerns the biological bases that have been found to be associated with PTSD (posttraumatic stress disorder). The cohering concepts in this section relate to risk factors; candidate genes; polygenetics; "gene×environment" interactions; epigenetics; endophenotypes; biomarkers; and connective networks both structurally and functionally (in terms of intrinsic connectivity networks, ICNs, including the DMN, SN, and CEN; that is, default mode, salience, and central executive networks, respectively)...
March 2, 2017: International Journal of Law and Psychiatry
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