Michelle F. Dennis

ORCID: 0000-0003-0734-7448
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About
Contact & Profiles
Research Areas
  • Posttraumatic Stress Disorder Research
  • Stress Responses and Cortisol
  • Smoking Behavior and Cessation
  • Suicide and Self-Harm Studies
  • Heart Rate Variability and Autonomic Control
  • Epigenetics and DNA Methylation
  • Migration, Health and Trauma
  • Resilience and Mental Health
  • Child Abuse and Trauma
  • Traumatic Brain Injury Research
  • Cardiac Health and Mental Health
  • Genetic Associations and Epidemiology
  • Tryptophan and brain disorders
  • Nicotinic Acetylcholine Receptors Study
  • Sleep and related disorders
  • Birth, Development, and Health
  • Identity, Memory, and Therapy
  • Mental Health Research Topics
  • Child and Adolescent Psychosocial and Emotional Development
  • Sleep and Work-Related Fatigue
  • Cannabis and Cannabinoid Research
  • Health, Environment, Cognitive Aging
  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Attention Deficit Hyperactivity Disorder
  • Family Support in Illness

Durham VA Health Care System
2015-2024

Duke University
2009-2024

Mental Illness Research, Education and Clinical Centers
2016-2024

University School
2024

The University of Texas at Austin
2024

Duke Medical Center
2012-2023

University of Utah
2023

Virginia Commonwealth University
2023

Huntsman (United States)
2023

Durham VA Medical Center
2010-2021

Nikolaos P. Daskalakis Artemis Iatrou Chris Chatzinakos Aarti Jajoo Clara Snijders and 95 more Dennis Wylie Christopher P. DiPietro Ioulia Tsatsani Chia‐Yen Chen Cameron D. Pernia Marina Soliva-Estruch Dhivya Arasappan Rahul Bharadwaj Leonardo Collado‐Torres Stefan Wuchty Victor E. Alvarez Eric B. Dammer Amy Deep–Soboslay Duc M. Duong Nicholas J. Eagles Bertrand R. Huber Louise A. Huuki-Myers Vincent Holstein Mark W. Logue Justina F. Lugenbühl Adam X. Maihofer Mark W. Miller Caroline M. Nievergelt Geo Pertea Deanna Ross Mohammad S.E. Sendi Benjamin B. Sun Ran Tao J. E. Tooke Erika J. Wolf Zane Zeier Sabina Berretta Frances A. Champagne Thomas M. Hyde Nicholas T. Seyfried Joo Heon Shin Daniel R. Weinberger Charles B. Nemeroff Joel E. Kleinman Kerry J. Ressler Caroline M. Nievergelt Adam X. Maihofer Elizabeth G. Atkinson Chia‐Yen Chen Karmel W. Choi Jonathan R. I. Coleman Nikolaos P. Daskalakis Laramie E. Duncan Renato Polimanti Cindy J. Aaronson Ananda B. Amstadter Søren Bo Andersen Ole A. Andreassen Paul A. Arbisi Allison E. Ashley‐Koch S. Bryn Austin Esmina Avdibegović Dragan Babić Silviu‐Alin Bacanu Dewleen G. Baker Anthony Batzler Jean C. Beckham Síntia Belangero Corina Benjet Carisa Bergner Linda M. Bierer Joanna M. Biernacka Laura J. Bierut Jonathan I. Bisson Marco P. Boks Elizabeth Bolger Amber Brandolino Gerome Breen Rodrigo A. Bressan Richard A. Bryant Angela C. Bustamante Jonas Bybjerg‐Grauholm Marie Bækvad‐Hansen Anders D. Børglum Sigrid Børte Leah Cahn Joseph R. Calabrese José Miguel Caldas‐de‐Almeida Chris Chatzinakos Sheraz Cheema Sean Clouston Lucía Colodro‐Conde Brandon J. Coombes Carlos S. Cruz-Fuentes Anders M. Dale Shareefa Dalvie Lea K. Davis Jürgen Deckert Douglas L. Delahanty Michelle F. Dennis

The molecular pathology of stress-related disorders remains elusive. Our brain multiregion, multiomic study posttraumatic stress disorder (PTSD) and major depressive (MDD) included the central nucleus amygdala, hippocampal dentate gyrus, medial prefrontal cortex (mPFC). Genes exons within mPFC carried most disease signals replicated across two independent cohorts. Pathways pointed to immune function, neuronal synaptic regulation, hormones. Multiomic factor gene network analyses provided...

10.1126/science.adh3707 article EN Science 2024-05-23

Abstract People who experience trauma and develop posttraumatic stress disorder (PTSD) are at increased risk for poor health. One mechanism that could explain this is accelerated biological aging, which associated with the accumulation of chronic diseases, disability, premature mortality. Using data from 2309 post-9/11 United States military veterans participated in VISN 6 MIRECC’s Post-Deployment Mental Health Study, we tested whether PTSD exposure were rate assessed using a validated DNA...

10.1038/s41398-023-02704-y article EN cc-by Translational Psychiatry 2024-01-06

<h3>Abstract</h3> <b>Objective:</b> To examine the effect of contact with a stroke family care worker on physical, social, and psychological status patients their carers. <b>Design:</b> Randomised controlled trial broad entry criteria blinded outcome assessment six months after randomisation. <b>Setting:</b> A well organised service in an Edinburgh teaching hospital <b>Subjects:</b> 417 acute previous 30 days randomly allocated to be contacted by (210) or receive standard (207). The...

10.1136/bmj.314.7087.1071 article EN BMJ 1997-04-12

Objective: Mindfulness meditation training is garnering increasing empirical interest as an intervention for ADHD in adulthood, although no studies of mindfulness a standalone treatment have included sample composed entirely adults with or comparison group. The aim this study was to assess the feasibility, acceptability, and preliminary efficacy ADHD, executive functioning (EF), emotion dysregulation symptoms adult sample. Method: Adults were stratified by medication status otherwise...

10.1177/1087054713513328 article EN Journal of Attention Disorders 2013-12-04

Smokers with posttraumatic stress disorder (PTSD) smoke at higher prevalence rates and are more likely to relapse early in a quit attempt. Innovative methods needed enhance rates, particularly the period. Web-based contingency-management (CM) approaches have been found helpful reducing smoking among other difficult-to-treat smoker populations but limited by need for computers. This pilot study builds on web-based CM approach evaluating smartphone-based application named mobile (mCM)....

10.1093/ntr/ntt060 article EN Nicotine & Tobacco Research 2013-05-03

The present study examined the structural validity of 25-item Connor–Davidson Resilience Scale (CD-RISC) in a large sample U.S. veterans with military service since September 11, 2001. Participants ( N = 1,981) completed CD-RISC, structured clinical interview and self-report questionnaire assessing psychiatric symptoms. was randomly divided into two subsamples: an initial (Sample 1: n 990) replication 2: 991). Findings derived from exploratory factor analysis (EFA) did not support...

10.1177/1073191114524014 article EN Assessment 2014-02-27
Qiang He Wenjing Wang Dingkang Xu Yang Xiong Chuanyuan Tao and 95 more Chao You Lu Ma Junpeng Ma Caroline M. Nievergelt Adam X. Maihofer Torsten Klengel Elizabeth G. Atkinson Chia‐Yen Chen Karmel W. Choi Jonathan R. I. Coleman Shareefa Dalvie Laramie E. Duncan Mark W. Logue Allison C. Provost Andrew Ratanatharathorn Murray B. Stein Katy Torres Allison E. Aiello Lynn M. Almli Ananda B. Amstadter Søren Bo Andersen Ole A. Andreassen Paul A. Arbisi Allison E. Ashley‐Koch S. Bryn Austin Esmina Avdibegović Dragan Babić Marie Bækvad‐Hansen Dewleen G. Baker Jean C. Beckham Laura J. Bierut Jonathan I. Bisson Marco P. Boks Elizabeth Bolger Anders D. Børglum Bekh Bradley Megan Brashear Gerome Breen Richard A. Bryant Angela C. Bustamante Jonas Bybjerg‐Grauholm Joseph R. Calabrese José Miguel Caldas‐de‐Almeida Anders M. Dale Mark J. Daly Nikolaos P. Daskalakis Jürgen Deckert Douglas L. Delahanty Michelle F. Dennis Seth G. Disner Katharina Domschke Alma Džubur Kulenović Christopher R. Erbes Alexandra Evans Lindsay A. Farrer Norah C. Feeny Janine D. Flory David Forbes Carol E. Franz Sandro Galea Melanie E. Garrett Bizu Gelaye Joel Gelernter Elbert Geuze Charles F. Gillespie Aferdita Goci Uka Scott D. Gordon Guia Guffanti Rasha Hammamieh Supriya Harnal Michael A. Hauser Andrew C. Heath Sian Hemmings David M. Hougaard Miro Jakovljević Marti Jett Eric O. Johnson Ian Jones Tanja Jovanović Xuejun Qin Angela G. Junglen Karen‐Inge Karstoft Milissa L. Kaufman Ronald C. Kessler Alaptagin Khan Nathan A. Kimbrel Anthony P. King Nastassja Koen Henry R. Kranzler William S. Kremen Bruce R. Lawford Lauren A. M. Lebois Catrin E. Lewis Sarah D. Linnstaedt Adriana Lori

Abstract Background The causal effects of gut microbiome and the development posttraumatic stress disorder (PTSD) are still unknown. This study aimed to clarify their potential association using mendelian randomization (MR). Methods summary-level statistics for were retrieved from a genome-wide (GWAS) MiBioGen consortium. As PTSD, Freeze 2 datasets originated Psychiatric Genomics Consortium Posttraumatic Stress Disorder Working Group (PGC-PTSD), replicated obtained FinnGen Single nucleotide...

10.1038/s41398-024-02765-7 article EN cc-by Translational Psychiatry 2024-01-31

This study evaluated the relationship between resilience and psychological functioning in military veterans deployed to a region of conflict support Operation Enduring Freedom or Iraqi Freedom.497 completed structured psychiatric interview questionnaires measuring symptoms, resiliency, trauma exposure. The had 2 primary aims: (1) examine whether association exposure PTSD was moderated by (2) uniquely associated with functional outcomes after accounting for PTSD. Measures included Structured...

10.4088/jcp.09m05780blu article EN The Journal of Clinical Psychiatry 2010-06-15

Objective Posttraumatic stress disorder (PTSD) has been linked to reduced heart rate variability (HRV), which is in turn a risk factor for cardiovascular disease and death. Although hyperarousal anxiety are thought underlie this association, behavioral health risks, including smoking, alcohol dependence, obesity, sleep disturbance, represent potential mechanisms linking PTSD HRV. Methods To test hypothesis, short-term laboratory-based 24-hour ambulatory measures of HRV were collected from...

10.1097/psy.0000000000000110 article EN Psychosomatic Medicine 2014-10-01

Compelling evidence suggests that epigenetic mechanisms such as DNA methylation play a role in stress regulation and the etiologic basis of related disorders Post traumatic Stress Disorder (PTSD). Here we describe purpose methods an international consortium was developed to study epigenetics PTSD. Inspired by approach used Psychiatric Genomics Consortium, brought together investigators representing seven cohorts with collective sample size N = 1147 included detailed information on trauma...

10.1002/ajmg.b.32568 article EN American Journal of Medical Genetics Part B Neuropsychiatric Genetics 2017-07-10

Abstract We present an ensemble transfer learning method to predict suicide from Veterans Affairs (VA) electronic medical records (EMR). A diverse set of base models was trained a binary outcome constructed reported suicide, attempt, and overdose diagnoses with varying choices study design prediction methodology. Each model used twenty cross-sectional 190 longitudinal variables observed in eight time intervals covering 7.5 years prior the prediction. Ensembles seven were created fine-tuned...

10.1038/s41598-024-51762-9 article EN cc-by Scientific Reports 2024-01-20

Although selective serotonin reuptake inhibitors have been the most empirically studied pharmacotherapy for posttraumatic stress disorder (PTSD), a need remains investigation of additional pharmacological agents in treatment PTSD. The present study examined use bupropion sustained release (SR) as compared with placebo symptom reduction patients PTSD: approximately half who were already prescribed an inhibitor and not.Thirty (mean age, 50 years) civilian- or military-related PTSD enrolled...

10.1097/jcp.0b013e318032eaed article EN Journal of Clinical Psychopharmacology 2007-03-19

Although sleep disturbance is considered a hallmark of posttraumatic stress disorder (PTSD), objective evidence for in patients with PTSD has been equivocal. The goal the current investigation was to objectively examine among women their home environment. Women (n = 30) and control group 22) completed three nights actigraphy monitoring. Results from indicated that had poorer efficiency, increased latency, more restless sleep. Actigraphy measures were moderately correlated self-report...

10.1002/jts.20255 article EN Journal of Traumatic Stress 2007-12-01

This study evaluated the effect of childhood trauma exposure and role resilience on both depressive symptoms suicidal ideation. The 1,488 military personnel veterans, who served after September 2001, for depressive, suicidal, PTSD symptoms, combat exposure, resiliency. Participants were enrolled as part an ongoing multicenter study. Outcome measures After controlling effects PTSD, results revealed that exposures significantly associated with In addition, was negatively ideation, suggesting a...

10.1080/13811118.2013.776445 article EN Archives of Suicide Research 2013-04-01

Background This study was designed to examine the concordance of proposed DSM-V posttraumatic stress disorder (PTSD) criteria with DSM-IV classification rules and impact PTSD on prevalence. Method The sample (N = 185) included participants who were recruited for studies focused trauma health conducted at an academic medical center VA in southeastern United States. prevalence between classifications calculated based results from structured clinical interviews. Prevalence rates diagnostic...

10.1002/da.22012 article EN Depression and Anxiety 2012-10-26

Retrospective research suggests smokers with posttraumatic stress disorder (PTSD) lapse more quickly after their quit date. Ecological momentary assessment (EMA) is needed to confirm the presence of early smoking in PTSD and form conceptualizations that inform intervention. Smokers (n = 55) without 52) completed alarm-prompted EMA situational psychiatric variables week before a date, self-initiated following lapses. Blood samples at baseline on date allowed dehydroepiandrosterone (DHEA)...

10.1093/ntr/nts252 article EN Nicotine & Tobacco Research 2012-11-22

Article AbstractIntroduction: Smoking rates are 80% among persons who homeless, and these smokers have decreased odds of quitting smoking. Little is known about relapse homeless smokers. More information needed regarding both quit innovative methods to treat smoking cessation Web-based contingency management (CM) approaches been found helpful in reducing other difficult-to-treat smoker populations but generally limited by the need for computers or frequent clinic-based carbon monoxide (CO)...

10.4088/jcp.14m09053 article EN The Journal of Clinical Psychiatry 2015-02-17
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