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PTSD genetics

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https://www.readbyqxmd.com/read/27863803/research-domain-criteria-and-the-study-of-trauma-in-children-implications-for-assessment-and-treatment-research
#1
REVIEW
Carla Smith Stover, Brooks Keeshin
By definition, the Diagnostic and Statistical Manual (DSM) diagnosis of posttraumatic stress disorder (PTSD) requires exposure to a traumatic event. Yet, the DSM diagnostic requirements for children and adolescents for PTSD may fail to capture traumatized youth with significant distress and functional impairment. Many important studies have utilized PTSD diagnosis as a mechanism for grouping individuals for comparative studies examining brain functioning, neuroendocrinology, genetics, attachment, and cognition; however, focusing only on those with the diagnosis of PTSD can miss the spectrum of symptoms and difficulties that impact children who experience trauma and subsequent impairment...
November 9, 2016: Clinical Psychology Review
https://www.readbyqxmd.com/read/27845777/newer-insights-into-the-role-of-mirna-a-tiny-genetic-tool-in-psychiatric-disorders-focus-on-post-traumatic-stress-disorder
#2
REVIEW
V V Giridharan, R A Thandavarayan, G R Fries, C Walss-Bass, T Barichello, N J Justice, M K Reddy, J Quevedo
Post-traumatic stress disorder (PTSD) is a mental disorder occurring in about 2-9% of individuals after their exposure to life-threatening events, such as severe accidents, sexual abuse, combat or a natural catastrophe. Because PTSD patients are exposed to trauma, it is likely that epigenetic modifications have an important role in disease development and prognosis. For the past two decades, abnormal expression of the epigenetic regulators microRNAs (miRs) and miR-mediated gene regulation have been given importance in a variety of human diseases, such as cancer, heart disease and viral infection...
November 15, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27834145/pharmacogenetics-and-pharmacotherapy-of-military-personnel-suffering-from-posttraumatic-stress-disorder
#3
Janine Naß, Thomas Efferth
BACKGROUND: Posttraumatic stress disorder (PTSD) is a severe problem among soldiers with combat experience and still difficult to treat. The pathogenesis is still not fully understood at the psychological level. Therefore, genetic research became a focus of interest. The identification of single nucleotide polymorphisms (SNPs) may help to predict, which persons are at high risk to develop PTSD as a starting point to develop novel targeted drugs for treatment. METHODS: We conducted a systematic review on SNPs in genes related to PTSD pathology and development of targeted pharmacological treatment options based on PubMed database searches...
November 11, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27794503/modifiable-risk-factors-for-chronic-back-pain-insights-using-the-co-twin-control-design
#4
Pradeep Suri, Edward J Boyko, Nicholas L Smith, Jeffrey G Jarvik, Frances M K Williams, Gail P Jarvik, Jack Goldberg
BACKGROUND: Inconsistent associations between modifiable risk factors and chronic back pain (CBP) may be due to the inability of traditional epidemiologic study designs to properly account for an array of potential genetic and environmental confounding factors. The co-twin control research design, comparing modifiable risk factors in twins discordant for CBP, offers a unique way to remove numerous confounding factors. PURPOSE: The study aimed to examine the association of modifiable lifestyle and psychological factors with lifetime CBP...
October 26, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27775175/genetic-risk-mechanisms-of-posttraumatic-stress-disorder-in-the-human-brain
#5
Rahul A Bharadwaj, Andrew E Jaffe, Qiang Chen, Amy Deep-Soboslay, Aaron L Goldman, Michelle I Mighdoll, John A Cotoia, Anna C Brandtjen, JooHeon Shin, Thomas M Hyde, Venkata S Mattay, Daniel R Weinberger, Joel E Kleinman
Posttraumatic stress disorder (PTSD) follows exposure to a traumatic event in susceptible individuals. Recently, genome-wide association studies have identified a number of genetic sequence variants that are associated with the risk of developing PTSD. To follow up on identifying the molecular mechanisms of these risk variants, we performed genotype to RNA sequencing-derived quantitative expression (whole gene, exon, and exon junction levels) analysis in the dorsolateral prefrontal cortex (DLPFC) of normal postmortem human brains...
October 24, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27769642/comt-val-158-met-polymorphism-is-associated-with-post-traumatic-stress-disorder-and-functional-outcome-following-mild-traumatic-brain-injury
#6
Ethan A Winkler, John K Yue, Adam R Ferguson, Nancy R Temkin, Murray B Stein, Jason Barber, Esther L Yuh, Sourabh Sharma, Gabriela G Satris, Thomas W McAllister, Jonathan Rosand, Marco D Sorani, Hester F Lingsma, Phiroz E Tarapore, Esteban G Burchard, Donglei Hu, Celeste Eng, Kevin K W Wang, Pratik Mukherjee, David O Okonkwo, Ramon Diaz-Arrastia, Geoffrey T Manley
Mild traumatic brain injury (mTBI) results in variable clinical trajectories and outcomes. The source of variability remains unclear, but may involve genetic variations, such as single nucleotide polymorphisms (SNPs). A SNP in catechol-o-methyltransferase (COMT) is suggested to influence development of post-traumatic stress disorder (PTSD), but its role in TBI remains unclear. Here, we utilize the Transforming Research and Clinical Knowledge in Traumatic Brain Injury Pilot (TRACK-TBI Pilot) study to investigate whether the COMT Val(158)Met polymorphism is associated with PTSD and global functional outcome as measured by the PTSD Checklist - Civilian Version and Glasgow Outcome Scale Extended (GOSE), respectively...
October 18, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27729874/dopamine-rebound-excitation-theory-putting-brakes-on-ptsd
#7
Jason C Lee, Lei Philip Wang, Joe Z Tsien
It is not uncommon for humans or animals to experience traumatic events in their lifetimes. However, the majority of individuals are resilient to long-term detrimental changes turning into anxiety and depression, such as post-traumatic stress disorder (PTSD). What underlying neural mechanism accounts for individual variability in stress resilience? Hyperactivity in fear circuits, such as the amygdalar system, is well-known to be the major pathophysiological basis for PTSD, much like a "stuck accelerator." Interestingly, increasing evidence demonstrates that dopamine (DA) - traditionally known for its role in motivation, reward prediction, and addiction - is also crucial in regulating fear learning and anxiety...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27721742/-soldier-s-heart-a-genetic-basis-for-elevated-cardiovascular-disease-risk-associated-with-post-traumatic-stress-disorder
#8
Harvey B Pollard, Chittari Shivakumar, Joshua Starr, Ofer Eidelman, David M Jacobowitz, Clifton L Dalgard, Meera Srivastava, Matthew D Wilkerson, Murray B Stein, Robert J Ursano
"Soldier's Heart," is an American Civil War term linking post-traumatic stress disorder (PTSD) with increased propensity for cardiovascular disease (CVD). We have hypothesized that there might be a quantifiable genetic basis for this linkage. To test this hypothesis we identified a comprehensive set of candidate risk genes for PTSD, and tested whether any were also independent risk genes for CVD. A functional analysis algorithm was used to identify associated signaling networks. We identified 106 PTSD studies that report one or more polymorphic variants in 87 candidate genes in 83,463 subjects and controls...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27692010/exploring-a-post-traumatic-stress-disorder-paradigm-in-flinders-sensitive-line-rats-to-model-treatment-resistant-depression-ii-response-to-antidepressant-augmentation-strategies
#9
Sarel Jacobus Brand, Brian Herbert Harvey
OBJECTIVE: Post-traumatic stress disorder (PTSD) displays high co-morbidity with major depression and treatment-resistant depression (TRD). Earlier work demonstrated exaggerated depressive-like symptoms in a gene×environment model of TRD and an abrogated response to imipramine. We extended the investigation by studying the behavioural and monoaminergic response to multiple antidepressants, viz. venlafaxine and ketamine with/without imipramine. METHODS: Male Flinders sensitive line (FSL) rats, a genetic model of depression, were exposed to a time-dependent sensitisation (TDS) model of PTSD and compared with stress naive controls...
October 3, 2016: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/27686106/biological-underpinnings-of-trauma-and-post-traumatic-stress-disorder-focusing-on-genetics-and-epigenetics
#10
Joanne Ryan, Isabelle Chaudieu, Marie-Laure Ancelin, Richard Saffery
Certain individuals are more susceptible to stress and trauma, as well as the physical and mental health consequences following such exposure, including risk for post-traumatic stress disorder (PTSD). This differing vulnerability is likely to be influenced by genetic predisposition and specific characteristics of the stress itself (nature, intensity and duration), as well as epigenetic mechanisms. In this review we provide an overview of research findings in this field. We highlight some of the key genetic risk factors identified for PTSD, and the evidence that epigenetic processes might play a role in the biological response to trauma, as well as being potential biomarkers of PTSD risk...
September 30, 2016: Epigenomics
https://www.readbyqxmd.com/read/27683563/childhood-trauma-and-comt-genotype-interact-to-increase-hippocampal-activation-in-resilient-individuals
#11
Sanne J H van Rooij, Jennifer S Stevens, Timothy D Ely, Negar Fani, Alicia K Smith, Kimberly A Kerley, Adriana Lori, Kerry J Ressler, Tanja Jovanovic
Both childhood trauma and a functional catechol-O-methyltransferase (COMT) genetic polymorphism have been associated with posttraumatic stress disorder (PTSD) and depression; however, it is still unclear whether the two interact and how this interaction relates to long-term risk or resilience. Imaging and genotype data were collected on 73 highly traumatized women. DNA extracted from saliva was used to determine COMT genotype (Val/Val, n = 38, Met carriers, n = 35). Functional MRI data were collected during a Go/NoGo task to investigate the neurocircuitry underlying response inhibition...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27676359/chronic-subordinate-colony-housing-paradigm-a-mouse-model-for-mechanisms-of-ptsd-vulnerability-targeted-prevention-and-treatment-2016-curt-richter-award-paper
#12
Stefan O Reber, Dominik Langgartner, Sandra Foertsch, Teodor T Postolache, Lisa A Brenner, Harald Guendel, Christopher A Lowry
There is considerable individual variability in vulnerability for developing posttraumatic stress disorder (PTSD); evidence suggests that this variability is related in part to genetic and environmental factors, including adverse early life experience. Interestingly, recent studies indicate that induction of chronic low-grade inflammation may be a common mechanism underlying gene and environment interactions that increase the risk for development of PTSD symptoms, and, therefore, may be a target for novel interventions for prevention or treatment of PTSD...
September 9, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27643478/a-genome-wide-association-study-of-emotion-dysregulation-evidence-for-interleukin-2-receptor-alpha
#13
Abigail Powers, Lynn Almli, Alicia Smith, Adriana Lori, Jen Leveille, Kerry J Ressler, Tanja Jovanovic, Bekh Bradley
Emotion dysregulation has been implicated as a risk factor for many psychiatric conditions. Therefore, examining genetic risk associated with emotion dysregulation could help inform cross-disorder risk more generally. A genome-wide association study (GWAS) of emotion dysregulation using single nucleotide polymorphism (SNP) array technology was conducted in a highly traumatized, minority, urban sample (N = 2600, males = 774). Post-hoc analyses examined associations between SNPs identified in the GWAS and current depression, posttraumatic stress disorder (PTSD), and history of suicide attempt...
December 2016: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/27573792/exploring-a-post-traumatic-stress-disorder-paradigm-in-flinders-sensitive-line-rats-to-model-treatment-resistant-depression-i-bio-behavioural-validation-and-response-to-imipramine
#14
Sarel Jacobus Brand, Brian Herbert Harvey
OBJECTIVE: Co-morbid depression with post-traumatic stress disorder (PTSD) is often treatment resistant. In developing a preclinical model of treatment-resistant depression (TRD), we combined animal models of depression and PTSD to produce an animal with more severe as well as treatment-resistant depressive-like behaviours. METHODS: Male Flinders sensitive line (FSL) rats, a genetic animal model of depression, were exposed to a stress re-stress model of PTSD [time-dependent sensitisation (TDS)] and compared with stress-naive controls...
August 30, 2016: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/27569652/lifetime-history-of-traumatic-events-in-a-young-adult-mexican-american-sample-relation-to-substance-dependence-affective-disorder-acculturation-stress-and-ptsd
#15
Cindy L Ehlers, Corinne Kim, David A Gilder, Gina M Stouffer, Raul Caetano, Rachel Yehuda
Mexican Americans comprise one of the most rapidly growing populations in the United States, and within this population, trauma and post-traumatic stress disorder (PTSD) are associated with physical and mental health problems. Therefore, efforts to delineate factors that may uniquely contribute to increased likelihood of trauma, PTSD, and substance use disorders over the lifetime in Mexican Americans are important to address health disparities and to develop treatment and prevention programs. Six hundred fourteen young adults (age 18-30 yrs) of Mexican American heritage, largely second generation, were recruited from the community and assessed with the Semi-Structured Assessment for the Genetics of Alcoholism and an acculturation stress scale...
August 15, 2016: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/27526315/expression-and-methylation-in-posttraumatic-stress-disorder-and-resilience-evidence-of-a-role-for-odorant-receptors
#16
Yuanxiu Chen, Xin Li, Ihori Kobayashi, Daisy Tsao, Thomas A Mellman
Post-traumatic stress disorder (PTSD) is a common and potentially disabling disorder that develops in 1/5 to 1/3 of people exposed to severe trauma. Twin studies indicate that genetic factors account for at least one third of the variance in the risk for developing PTSD, however, the specific role for genetic factors in the pathogenesis of PTSD is not well understood. We studied genome-wide gene expression and DNA methylation profiles in 12 participants with PTSD and 12 participants who were resilient to similar severity trauma exposure...
November 30, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27441461/pilot-study-of-a-telehealth-delivered-medication-augmented-exposure-therapy-protocol-for-ptsd
#17
Megan Olden, Katarzyna Wyka, Judith Cukor, Melissa Peskin, Margaret Altemus, Francis S Lee, Lucy Finkelstein-Fox, Terry Rabinowitz, JoAnn Difede
Posttraumatic stress disorder (PTSD) is a serious condition, with certain occupations at increased risk due to greater trauma exposure. These same individuals face multiple barriers to care. This study aimed to investigate the feasibility of conducting a research trial with exposure therapy delivered via videoconferencing. Eleven adults working in occupations at risk with PTSD enrolled and seven completed 12 to 15 sessions. Individuals were randomized to receive the cognitive enhancer D-cycloserine or placebo, and participants provided saliva samples for genetic analysis...
July 21, 2016: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/27419272/biological-markers-for-anxiety-disorders-ocd-and-ptsd-a-consensus-statement-part-ii-neurochemistry-neurophysiology-and-neurocognition
#18
Borwin Bandelow, David Baldwin, Marianna Abelli, Blanca Bolea-Alamanac, Michel Bourin, Samuel R Chamberlain, Eduardo Cinosi, Simon Davies, Katharina Domschke, Naomi Fineberg, Edna Grünblatt, Marek Jarema, Yong-Ku Kim, Eduard Maron, Vasileios Masdrakis, Olya Mikova, David Nutt, Stefano Pallanti, Stefano Pini, Andreas Ströhle, Florence Thibaut, Matilde M Vaghi, Eunsoo Won, Dirk Wedekind, Adam Wichniak, Jade Woolley, Peter Zwanzger, Peter Riederer
OBJECTIVE: Biomarkers are defined as anatomical, biochemical or physiological traits that are specific to certain disorders or syndromes. The objective of this paper is to summarise the current knowledge of biomarkers for anxiety disorders, obsessive-compulsive disorder (OCD) and posttraumatic stress disorder (PTSD). METHODS: Findings in biomarker research were reviewed by a task force of international experts in the field, consisting of members of the World Federation of Societies for Biological Psychiatry Task Force on Biological Markers and of the European College of Neuropsychopharmacology Anxiety Disorders Research Network...
July 15, 2016: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/27417856/understanding-resilience-new-approaches-for-preventing-and-treating-ptsd
#19
Sarah R Horn, Dennis S Charney, Adriana Feder
All individuals experience stressful life events, and up to 84% of the general population will experience at least one potentially traumatic event. In some cases, acute or chronic stressors lead to the development of posttraumatic stress disorder (PTSD) or other psychopathology; however, the majority of people are resilient to such effects. Resilience is the ability to adapt successfully in the face of stress and adversity. A wealth of research has begun to identify the genetic, epigenetic, neural, and environmental underpinnings of resilience, and has indicated that resilience is mediated by adaptive changes encompassing several environmental factors, neural circuits, numerous neurotransmitters, and molecular pathways...
July 11, 2016: Experimental Neurology
https://www.readbyqxmd.com/read/27403679/biological-markers-for-anxiety-disorders-ocd-and-ptsd-a-consensus-statement-part-i-neuroimaging-and-genetics
#20
Borwin Bandelow, David Baldwin, Marianna Abelli, Carlo Altamura, Bernardo Dell'Osso, Katharina Domschke, Naomi A Fineberg, Edna Grünblatt, Marek Jarema, Eduard Maron, David Nutt, Stefano Pini, Matilde M Vaghi, Adam Wichniak, Gwyneth Zai, Peter Riederer
OBJECTIVES: Biomarkers are defined as anatomical, biochemical or physiological traits that are specific to certain disorders or syndromes. The objective of this paper is to summarise the current knowledge of biomarkers for anxiety disorders, obsessive-compulsive disorder (OCD) and post-traumatic stress disorder (PTSD). METHODS: Findings in biomarker research were reviewed by a task force of international experts in the field, consisting of members of the World Federation of Societies for Biological Psychiatry Task Force on Biological Markers and of the European College of Neuropsychopharmacology Anxiety Disorders Research Network...
August 2016: World Journal of Biological Psychiatry
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