Treatment Of Posttraumatic Stress Disorder Research Articles

In Context: AI Will Write Your Paper: The Very Different Future of Research and Scientific Writing in the Age of Artificial Intelligence

Recently, I was at a Microsoft Technology Center to discuss the augmented reality (AR) technology developed in my lab for treatment of post-traumatic stress disorder (PTSD). We also explored the possibility of using artificial intelligence (AI) to automate interactions with digital AR characters. We were also given a tour of the Microsoft 365 Copilot AI technology. This experience, along with my upcoming experiences with the rapidly evolving and publicly available AI technology, triggered a series of questions and reflections about the use of AI in scientific work and writing.

Causal Associations between Posttraumatic Stress Disorder and COVID-19.

We aimed to evaluate bidirectional genetic relationships between posttraumatic stress disorder (PTSD) and COVID-19. We investigated potential causal associations between PTSD and two COVID-19 conditions (COVID-19 hospitalization and SARS-CoV-2 infection) via Mendelian randomization (MR) analyses. Three genome-wide association study (GWAS) summary datasets were used in the study, including PTSD (N = 174,659), SARS-CoV-2 infection (N = 2,597,856), and COVID-19 hospitalization (N = 2,095,324). We performed a literature-based analysis to uncover molecular pathways connecting PTSD and COVID-19. We found that PTSD exerts a causal effect on SARS-CoV-2 infection (odds ratio (OR): 1.10, 95% confidence interval (CI): 1.00-1.21, p = 0.048) and hospitalized COVID-19 (OR: 1.34, 95% CI: 1.07-1.67, p = 0.001). However, both SARS-CoV-2 infection and hospitalized COVID-19 were not associated with the risk of PTSD. Pathway analysis revealed that several immunity-related genes may link PTSD to COVID-19. Our study suggests that PTSD was associated with increased risks for COVID-19 susceptibility and severity. Early diagnosis and effective treatment of PTSD in individuals infected with the coronavirus may improve the management of the outcomes of COVID-19.

Beyond exposure: A healthy broadening of posttraumatic stress disorder treatment options: Commentary on Rubenstein et al. (2024).

This commentary on Rubenstein et al. (2024) applauds their sensitive historical exploration of exposure therapy for posttraumatic stress disorder (PTSD) and balanced review of the strengths and weaknesses of that approach. I offer five points to expand on their contribution. (a) Stringent exposure therapy workforce requirements limit scalability, thus restricting access for the large number of patients in need of PTSD treatment. (b) There are additional non-trauma-focused approaches that show efficacy for PTSD. (c) Results of exposure therapy trials should be interpreted in light of how much the study designs align with real-world conditions. (d) Some surprising results from the subfield of PTSD/substance use disorder could suggest new treatment options. (e) There is a need for stronger reporting of clinical worsening (iatrogenesis) outside of clinical trials. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Feasibility of Emotional Freedom Techniques in Patients with Posttraumatic Stress Disorder: a pilot study.

Posttraumatic stress disorder (PTSD) is a prevalent mental health condition, and techniques using sensory stimulation in processing traumatic memories have gained attention. The Emotional Freedom Techniques (EFT) is a psychotherapy that combines tapping on acupoints with exposure to cognitive reframing. This pilot study aimed to assess the feasibility of EFT as a treatment for PTSD by answering the following research questions 1) What is the compliance and completion rate of patients with PTSD with regard to EFT protocol? Is the dropout rate reasonable? 2) Is the effect size of EFT protocol for PTSD sufficient to justify a future trial? Thirty participants diagnosed with PTSD were recruited. They received weekly EFT sessions for five weeks, in which they repeated a statement acknowledging the problem and accepting themselves while tapping the SI3 acupoint on the side of their hand. PTSD symptoms were evaluated using the PTSD Checklist for DSM-5 (PCL-5) before and after the intervention. Of the 30 PTSD patients (mean age 34.1 ± 9.1, 80% female), 96.7% showed over 80% compliance to the EFT sessions, and 86.7% completed the entire study process. The mean PCL-5 total score decreased significantly after the intervention, with a large effect size (change from baseline -14.33 [95% CI -19.79, -8.86], p < 0.0001, d = 1.06). The study suggests that EFT is a feasible treatment for PTSD, with high session compliance and low dropout rates. The effect size observed in this study supports the need for a larger trial in the future to further investigate EFT as a treatment for PTSD. However, the lack of a control group and the use of a self-rated questionnaire for PTSD symptoms are limitations of this study. The findings of this pilot study can be used to plan a future trial.

Dropout in a clinical trial for comorbid PTSD and MDD among US service members: Are pretreatment characteristics predictive?

Objective Despite effective treatment options for posttraumatic stress disorder (PTSD), many patients do not complete therapy. This includes U.S. active duty service members, yet factors linked to attendance in this population remain understudied and dropout remains difficult to predict. Additionally, most studies have not examined samples with PTSD and co-occurring major depressive disorder (MDD) despite high rates of comorbidity. Method The current study explored predictors of dropout among service members with comorbid PTSD and MDD (N = 94) randomized to cognitive processing therapy enhanced with behavioral activation (BA + CPT) or CPT as part of a clinical trial. Results Using the Fournier approach, only two predictors were associated with lower dropout risk among over 20 examined: shorter duration between pretreatment assessment and Session 1 (p = .041) and past 3-month PTSD treatment engagement (p = .036). Conclusion Results suggest the possible utility of early momentum in starting therapy and leveraging recent treatment to improve attendance. However, this study also highlights the possible limitations of commonly assessed pretreatment factors in predicting attendance and current challenges in measuring dropout risk. Strategies to improve prediction, such as shifting focus to assess modifiable factors and processes more proximal to dropout during treatment, may be needed. Trial registration: ClinicalTrials.gov identifier: NCT02874131.

The impact of trauma-focused psychotherapies on anger: A systematic review and meta-analysis.

Anger is one of the most prevalent concerns among individuals with posttraumatic stress disorder (PTSD) and is often a residual symptom following PTSD treatment. The purpose of this systematic review and meta-analysis was to determine how effective trauma-focused PTSD psychotherapies are in reducing anger. The study was reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. This study conducted a systematic review of studies that reported the effect of trauma-focused treatments on anger outcomes. Additionally, a meta-analysis was conducted with a subset of studies that used randomized controlled trials (RCTs) methodologies to compare trauma-focused PTSD treatments to nontrauma-focused and control conditions. The systematic review included 16 studies with a total of 1,846 participants. In 11 of the studies, there was a significant decrease in an anger dimension following treatment. Eight studies with 417 total participants met inclusion criteria for the meta-analysis. The meta-analysis yielded a pooled effect size of PTSD treatment on anger of Hedges's g = 0.33. Overall, trauma-focused treatments for PTSD significantly improve anger, but the magnitude of change is small-to-medium. Additional research is needed to determine how best to maximize anger outcomes following trauma-focused treatment or determine if and when targeted anger treatment is needed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Cost-effectiveness of therapist-assisted internet-delivered psychological therapies for PTSD differing in trauma focus in England: an economic evaluation based on the STOP-PTSD trial

Although there are effective psychological treatments for post-traumatic stress disorder (PTSD), they remain inaccessible for many people. Digitally enabled therapy is a way to overcome this problem; however, there is little evidence on which forms of these therapies are most cost effective in PTSD. We aimed to assess the cost-effectiveness of the STOP-PTSD trial, which evaluated two therapist-assisted, internet-delivered cognitive behavioural therapies: cognitive therapy for PTSD (iCT-PTSD) and a programme focusing on stress management (iStress-PTSD). In this health economic evaluation, we used data from the STOP-PTSD trial (n=217), a single-blind, randomised controlled trial, to compare iCT-PTSD and iStress-PTSD in terms of resource use and health outcomes. In the trial, participants (aged ≥18 years) who met DSM-5 criteria for PTSD were recruited from primary care therapy services in South East England. The interventions were delivered online with therapist support for the first 12 weeks, and three telephone calls over the next 3 months. Participants completed questionnaires on symptoms, wellbeing, quality of life, and resource use at baseline, 13 weeks, 26 weeks, and 39 weeks after randomisation. We used a cost-effectiveness analysis to assess cost per quality-adjusted life year (QALY) at 39 weeks post-randomisation, from the perspective of the English National Health Service (NHS) and personal social services and on the basis of intention-to-treat for complete cases. Treatment modules and the platform design were developed with extensive input from service users: service users also advised on the trial protocol and methods, including the health economic measures. This is a pre-planned analysis of the STOP-PTSD trial; the trial was registered prospectively on the ISRCTN Registry (ISRCTN16806208). NHS costs were similar across treatment groups, but clinical outcomes were superior for iCT-PTSD compared with iStress-PTSD. The incremental cost-effectiveness ratio for NHS costs and personal social services was estimated as £1921 per QALY. iCT-PTSD had an estimated 91·6% chance of being cost effective at the £20 000 per QALY threshold. From the societal perspective, iCT-PTSD was cost saving compared with iStress-PTSD. iCT-PTSD is a cost-effective form of therapist-assisted, internet-delivered psychological therapy relative to iStress-PTSD, and it could be considered for clinical implementation. Wellcome Trust and National Institute of Health Research Oxford Health Biomedical Research Centre.

Intensive Care Unit (ICU)-Related Post-traumatic Stress Disorder: A Literature Review.

An intensive care unit (ICU) is a challenging environment characterized by frequent incidences of stressors and traumatic situations. Therefore, both patients and caregivers are at high risk of developing psychological disorders such as post-traumatic stress disorder (PTSD), anxiety, and depression. ICU-related PTSD is a significant concern that remains under-recognized. This literature review examines the current state of knowledge regarding ICU-related PTSD, including its prevalence, risk factors, clinical manifestations, and potential interventions. Key findings suggest that a considerable proportion of ICU survivors develop PTSD symptoms, which can significantly impact their quality of life and recovery. The most common predictors investigated for PTSD in ICU survivors are age, gender, pre-illness psychopathy, length of stay in the ICU, delirium, and sedative agents. The treatment and prevention strategies of ICU-related PTSD include psychological therapies and pharmacological and non-pharmacological treatments. Psychological interventions, including cognitive-behavioral therapy and pharmacotherapy, have shown promise in mitigating PTSD symptoms in ICU survivors. However, further research is needed to better understand the mechanisms underlying ICU-related PTSD and to develop targeted interventions to prevent and manage this debilitating condition.

Islamic Coping, Post Traumatic Stress Disorder (PTSD) and Islam Oriented Trauma Focused Cognitive Behavioral Therapy (IO-TF-CBT) in Post-Kahramanmaraş Earthquake Period

The Great Southeast Turkey Earthquakes (GSTE) of February 2023 were not only a physical disaster but also seem to have triggered the onset of Post-Traumatic Stress Disorder (PTSD) among survivors in Kahramanmaraş and surrounding areas. This review emphasizes the need for culturally appropriate clinical interventions in PTSD therapies, addressing the psychological impacts left by the earthquakes. The Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) models implemented after the 1999 Marmara earthquake failed to integrate cultural and Islamic thoughts effectively. With this critical perspective, the article advocates for a holistic healing process that integrates Islamic coping mechanisms with clinical psychology. The importance of religious and spiritual practices in PTSD recovery, especially reliance on Allah, patience, the concept of ummah, prayer, almsgiving, and belief in destiny, is highlighted. While analyzing the potential effectiveness of Islamic approaches in PTSD rehabilitation, the study criticizes the inadequacies of current clinical practices and advocates for the adoption of faith-integrated therapeutic strategies. It proposes a structured methodology for Islamic-Oriented TF-CBT that integrates spiritual practices with scientifically supported psychological interventions, highlighting the gaps in current practices. The aim is to bridge the gap between Islamic practices and clinical psychology, offering a treatment approach compatible with the religious values and traditions of the Muslim population affected by the GSTE. This critical perspective strengthens the call for progress towards cultural competency in mental health services, ensuring that PTSD treatments adapt to the diversity and complexity of earthquake victims. The article emphasizes the need to comprehensively address the psychological needs of individuals affected by the GSTE, particularly those battling PTSD. Recognizing PTSD as not only an individual disorder but also a societal issue, the study suggests that treatment processes should consider not only the individual but also the community. The importance of community-based interventions is highlighted, discussing the current shortcomings and areas for development in this field. In conclusion, the article underscores the significance of cultural sensitivity and community-based approaches in PTSD treatment, calling for more research and implementation in this area.

Visual Schema Displacement Therapy versus Eye Movement Desensitization and Reprocessing therapy versus waitlist in the treatment of post-traumatic stress disorder: results of a randomized clinical trial.

Visual Schema Displacement Therapy (VSDT) is a novel approach showing promise in mitigating distressing memories, akin to Eye Movement Desensitization and Reprocessing (EMDR). This study aimed to determine the safety, feasibility, and effectiveness of VSDT in individuals with post-traumatic stress disorder (PTSD), comparing it to EMDR therapy and a waitlist control condition (WLCC). It was hypothesized that the application of VSDT would be safe and PTSD symptoms significantly be reduced from both baseline to post-treatment and from baseline to follow-up in the VSDT and EMDR therapy conditions. Furthermore, we expected both treatments to be significantly more effective than the waitlist control. Moreover, we hypothesized that VSDT and EMDR therapy would be associated with significant improvements in symptoms of depression and general psychopathology. Forty-six adults with PTSD were randomly assigned to VSDT, EMDR therapy, or WLCC, receiving six 90-minute sessions. Assessments included the Clinician Administered PTSD Scale for the Diagnostic Statistical Manual (DSM)-5 (CAPS-5), PTSD Checklist for DSM-5 (PCL-5), Beck Depression Inventory-II (BDI-II) and Brief Symptom Inventory (BSI) before, during, and 3 months post-treatment. Bayesian analysis found no differences between VSDT and EMDR in PTSD symptom reduction but both outperformed WLCC. EMDR was superior to the WLCC in reducing symptoms of depression and general psychopathology. At 3-month follow-up, 58.3% of the participants in the VSDT condition no longer met the PTSD diagnostic criteria (41.2% EMDR therapy and 15.4% WLCC) with no difference between the two therapy conditions. Self-reported PTSD symptom reduction was significant in VSDT (d = 1.38) and EMDR (d = 1.40) but modest in WLCC (d = 0.39). Dropout rate was 19.3%, with no adverse events. This study supports VSDT's efficacy in treating PTSD, offering a valuable therapeutic option comparable to EMDR, with significant reductions in PTSD symptoms and no difference with EMDR or the control condition for depressive symptoms and general psychopathology, and no reported adverse events.

12-month follow-up of intensive outpatient treatment for PTSD combining prolonged exposure therapy, EMDR and physical activity

BackgroundPreliminary evidence shows promising treatment outcomes at short-term follow-up for intensive posttraumatic stress disorder (PTSD) treatment, but long-term follow-up studies are sparse. This study is a sequel to a previous pilot study and open trial, set out to investigate treatment outcomes at 12-month follow-up for outpatients completing an 8-day intensive treatment for PTSD.MethodsAll patients were diagnosed with PTSD and had multiple previous psychotherapy attempts (M = 3.1). Patients were assessed at pre-treatment, post-treatment, 3- and 12-month follow-up. Of 35 treated patients, 32 (91.4%) attended the long-term follow-up assessment. The treatment programme combined prolonged exposure therapy, eye movement desensitization and reprocessing, and physical activity.ResultsThe effect sizes indicated large reductions in symptoms of PTSD, depression, anxiety, interpersonal problems, and well-being. Changes in functioning showed a small-medium effect. Results were stable across the follow-up period. The treatment response rates showed that 46–60% of patients achieved recovery with respect to PTSD symptoms, and that 44–48% no longer met diagnostic criteria for PTSD.ConclusionsTime-limited and concentrated outpatient treatment for PTSD can yield large and enduring positive outcomes. Controlled trials are needed to establish relative efficacy.Trial registrationThe study was registered in Current Research Information System In Norway (Cristin). Cristin-project-ID: 654,790. Date of registration: 18.03.2019.

Influence of Stress Severity on Contextual Fear Extinction and Avoidance in a Posttraumatic-like Mouse Model.

Posttraumatic stress disorder (PTSD) is a widespread fear-related psychiatric affection associated with fear extinction impairments and important avoidance behaviors. Trauma-related exposure therapy is the current first-hand treatment for PTSD, yet it needs to be improved to shorten the time necessary to reach remission and increase responsiveness. Additional studies to decipher the neurobiological bases of extinction and effects on PTSD-like symptoms could therefore be of use. However, a PTSD-like animal model exhibiting pronounced PTSD-related phenotypes even after an extinction training directly linked to the fearful event is necessary. Thus, using a contextual fear conditioning model of PTSD, we increased the severity of stress during conditioning to search for effects on extinction acquisition and on pre- and post-extinction behaviors. During conditioning, mice received either two or four electrical shocks while a control group was constituted of mice only exposed to the context. Stressed mice exhibited important fear generalization, high fear reaction to the context and selective avoidance of a contextual reminder even after the extinction protocol. Increasing the number of footshocks did not induce major changes on these behaviors.

A randomized controlled trial testing theory-driven enhancements to increase the efficacy of and engagement in a brief cognitive-behavioural therapy text-message intervention for co-occurring posttraumatic stress disorder symptoms and alcohol misuse.

Engaging individuals with co-occurring posttraumatic stress disorder (PTSD) and alcohol misuse (AM) in effective treatments is difficult. Brief, self-directed approaches that deliver empirically supported intervention techniques, such as cognitive-behavioural therapy (CBT) strategies, via technology may be effective and easier-to-access alternatives to traditional in-person therapy approaches for PTSD + AM. This paper describes the protocol for an intervention development study (NCT05372042) that evaluates a text-message intervention combining CBT texts with techniques from cognitive psychology (message framing) and social psychology (growth mindsets) for treatment of PTSD + AM. The study uses a 3 (message framing: gain vs. loss vs. no framing) × 2 (mindset: growth mindsets vs. not) factorial design to test enhancements to CBT texts. Individuals age 18+, who report symptoms of PTSD and AM, will be recruited to participate. Participants will complete screening, verification, and baseline measures. They will be randomized to condition and receive 3 text messages per week for 4 weeks. Participants will be assessed at post-, 1-, and 3-month follow-up. Analyses will evaluate whether framing and growth mindsets enhance the efficacy of CBT texts. A priori decision rules will be applied to select the intervention condition that is both the most effective and the simplest, which will be tested in a follow-up randomized controlled trial. This study will identify the simplest, most efficacious CBT intervention for PTSD + AM. Its use of cognitive and social psychology-based enhancement and of a factorial decision can serve as examples of how to enhance and increase engagement in brief, self-directed CBT interventions.

Systematic Review of Dispositional Mindfulness and Posttraumatic Stress Disorder Symptomology: A Targeted Examination of Avoidance.

High rates of nonresponse to evidence-based treatment for posttraumatic stress disorder (PTSD) have fueled the search for improved intervention. Evidence suggests that improvements in dispositional mindfulness (i.e., tendency to attend to the present with nonjudgment and nonreactivity) may help reduce PTSD symptoms. While some research suggests that transdiagnostic mindfulness-based interventions particularly target avoidance symptoms, the association between dispositional mindfulness and avoidance has yet to be systematically examined. To address this gap, we examined peer-reviewed studies that reported quantitative associations between avoidance and dispositional mindfulness among trauma-exposed adults, following Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2009 guidelines. Sixteen studies were identified for final review from PsycINFO and PubMed databases. Results suggest that mindfulness has a weak relationship with effortful avoidance. This weak relationship may be obscured in studies where effortful avoidance is measured among other symptoms (e.g., anhedonia). Mindfulness appeared to have stronger associations with symptoms of hyperarousal and negative alterations in cognition and mood. An important clinical implication is that high effortful avoidance may manifest among patients who report strong mindfulness skills. It may be helpful for clinicians to carefully assess how mindfulness is being used to cope.

Brief family involvement enhances veteran homework quality during trauma-focused psychotherapy.

Homework has been shown to improve outcomes in cognitive-behavioral therapy, though less is known about the importance of homework during trauma-focused psychotherapy. Similarly, prior research suggests family context plays a key role in posttraumatic stress disorder (PTSD)-related distress and treatment engagement. One potential way that families can facilitate better treatment outcomes is by promoting homework engagement. This study examined the impact of a brief family intervention (BFI) for PTSD toward this aim. We hypothesized that veterans with PTSD whose family members (FMs) received the BFI would have better homework completion and quality than those who did not receive the BFI. This mixed-methods analysis examined 24 veteran-family dyads enrolled in a randomized clinical trial examining the BFI. All veterans were currently engaged in trauma-focused psychotherapy. Each veteran's clinician rated their homework quality and completion after each therapy session. A subset of dyads also completed semistructured interviews posttreatment. A rapid qualitative analysis approach was used to examine themes in shifting family behavior post-BFI. Quantitative analyses yielded partial support for our hypotheses: those in the BFI condition had significantly higher clinician-rated homework quality. While participants in the BFI condition had a higher homework completion rate, this difference did not reach statistical significance. Qualitative analyses suggested that the BFI prompted meaningful discussions about PTSD and increased FMs' use of supportive (rather than accommodative) behavior when responding to PTSD-related distress. Involving FMs in PTSD treatment appears to shift the family context in a manner that improves homework quality in veterans. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Post-traumatic stress disorder in a national sample of preadolescent children 9 to 10 years old: Prevalence, correlates, clinical sequelae, and treatment utilization

Although posttraumatic stress disorder (PTSD) has been well characterized in adults, its epidemiology in children is unclear. The current study provides the first population-based examination of the prevalence of PTSD, sociodemographic and psychiatric correlates, clinical sequelae, and associations with psychiatric treatment in preadolescents 9-10 years old in the United States. Data from the Adolescent Brain and Cognitive Development (ABCD) Study (release 5.0) was analyzed. Participants (unweighted n = 11,875) were recruited from 21 sites across the United States. Current and lifetime PTSD prevalence were estimated, as was treatment use among children with PTSD. Sociodemographic, psychiatric correlates and sequelae of PTSD were analyzed using logistic regression, as was the association between PTSD and psychiatric treatment. After the application of propensity weights, lifetime prevalence of PTSD was 2.17%. Sexual minority status, being multiracial, having unmarried parents, and family economic insecurity were associated with greater odds of PTSD. Among psychiatric disorders, separation anxiety was most strongly associated with PTSD, although general comorbid psychopathology was associated with greater odds of PTSD. Prior history of PTSD predicted a new onset of other psychiatric disorders after PTSD remission. Nearly one in three children with lifetime PTSD did not receive psychiatric treatment, despite negative long-term outcomes of PTSD and significant psychiatric comorbidity. Even among preadolescents who experience full remission of PTSD, a significant risk for future psychiatric illness remains. Further, the current findings underscore the need for improved efforts to reduce unmet treatment needs among those with PTSD at this age.

Can Baseline Patient Clinical and Demographic Characteristics Predict Response to Early Posttraumatic Stress Disorder Interventions After Physical Injury?

Objective A growing evidence base supports stepped care interventions for the early treatment of posttraumatic stress disorder (PTSD) after physical injury. Few investigations have examined the characteristics of patients who do and do not respond to these interventions. Method This investigation was a secondary analysis that used previously collected data from three randomized clinical trials of stepped care interventions (patient N = 498). The study hypothesized that a subgroup of patients would manifest persistent PTSD symptoms regardless of randomization to intervention or control conditions, and that characteristics present at the time of baseline injury hospitalization could distinguish patients who would develop persistent symptoms from potential treatment responders. Regression analyses identified baseline patient clinical and demographic characteristics that were associated with persistent PTSD symptoms over the 6-months post-injury. Additional analyses identified treatment attributes of intervention patients who were and were not likely to demonstrate persistent symptoms. Results A substantial subgroup of patients (n = 222, 44.6%) demonstrated persistent PTSD symptoms over time. Greater numbers of pre-injury trauma, pre-injury PTSD symptoms, elevated early post-injury PTSD symptoms, unemployment, and non-White race identified patients with persistent symptoms. Patients with ≥3 of these baseline risk characteristics demonstrated diminished treatment responses when compared to patients with <3 characteristics. Intervention patients with ≥3 risk characteristics were less likely to engage in treatment and required greater amounts of interventionist time. Conclusions Injured trauma survivors have readily identifiable characteristics at the time of hospitalization that can distinguish responders to PTSD stepped care interventions versus patients who may be treatment refractory.

CK2 negatively regulates the extinction of remote fear memory

Cognitive behavioral therapy, rooted in exposure therapy, is currently the primary approach employed in the treatment of anxiety-related conditions, including post-traumatic stress disorder (PTSD). In laboratory settings, fear extinction in animals is a commonly employed technique to investigate exposure therapy; however, the precise mechanisms underlying fear extinction remain elusive. Casein kinase 2 (CK2), which regulates neuroplasticity via phosphorylation of its substrates, has a significant influence in various neurological disorders, such as Alzheimer’s disease and Parkinson’s disease, as well as in the process of learning and memory. In this study, we adopted a classical Pavlovian fear conditioning model to investigate the involvement of CK2 in remote fear memory extinction and its underlying mechanisms. The results indicated that the activity of CK2 in the medial prefrontal cortex (mPFC) of mice was significantly upregulated after extinction training of remote cued fear memory. Notably, administration of the CK2 inhibitor CX-4945 prior to extinction training facilitated the extinction of remote fear memory. In addition, CX-4945 significantly upregulated the expression of p-ERK1/2 and p-CREB in the mPFC. Our results suggest that CK2 negatively regulates remote fear memory extinction, at least in part, by inhibiting the ERK-CREB pathway. These findings contribute to our understanding of the underlying mechanisms of remote cued fear extinction, thereby offering a theoretical foundation and identifying potential targets for the intervention and treatment of PTSD.

Case report: the addition of olfaction to virtual reality enhanced exposure therapy for PTSD

Posttraumatic stress disorder (PTSD) occurs in approximately 20% of individuals following exposure to a potentially traumatic event. Re-experiencing in the form of intrusive memories is a hallmark feature, and often includes sensory elements, including odor. A small body of studies have examined the relationship between PTSD and odor evoked memories. Patients avoid smells that remind them of their traumatic event, and odors are known triggers for intrusive memories and distress. PTSD is associated with higher ratings of odor intensity and unpleasantness however accuracy of odor detection is often impaired. It has been suggested that adding trauma-related odors will enhance treatment, however little data exists. This case study illustrates the addition of trauma specific olfaction in Virtual Reality (VR) enhanced exposure therapy for combat related PTSD. Treatment was successful, the patient no longer met criteria for PTSD at the end of treatment, and self-report symptoms scores indicated clinically significant reductions. The patient indicated at the end of treatment that he would not have been helped had the therapy not used VR, and the addition of odors helped him process the traumatic memories. Future research should assess the addition of olfaction in a systematic way, in order to assess its specific impact in the effectiveness of PTSD treatment.

Auditory Steady-State Evoked Potentials in Post Traumatic Stress Disorder: Introduction of a Potential Biomarker.

Objective: The lack of steady-state evoked potential (SSEP) studies on post-traumatic stress disorder (PTSD) has led to undiscovered useful information about the pathophysiology of the disorder. Thus, we explored SSEP patterns in PTSD patients during a stop-signal task to disclose possible impairments in these informative brain potentials. Method : 25 adult patients with PTSD and 25 healthy adults participated in this research. Subjects were assessed with electroencephalography while the tone signal stimuli at 40 Hz were used to evoke SSEPs and subjects performed a stop-signal task. The amplitude and phase of SSEPs were then computed in different brain regions. The subjects were also evaluated using the Mississippi PTSD questionnaire. Appropriate statistical methods such as repeated measure ANOVA were used to compare the two groups, and the correlation between SSEPs and clinical symptoms was assessed using Pearson correlation analysis. Results: Patients showed considerably poorer performance in the cognitive task (P < 0.01), accompanied by raised SSEP phase and amplitude in the anterior and midline regions compared to healthy controls (P < 0.05). The Mississippi total score was positively correlated with the SSEP amplitude in the midline region (r = 0.62, P < 0.05). Furthermore, based on ROC analysis, the SSEP amplitude in the midline region provided an excellent AUC value (AUC = 0.850) for distinguishing patients with PTSD from normal subjects. Conclusion: Current findings suggest that abnormalities in the anterior and midline cortical neural networks are involved in the pathophysiology of PTSD. Importantly, midline abnormalities may provide a clinically-relevant measure for researchers wishing to assess the use of biomarkers for early diagnosis of PTSD as well as to evaluate new therapeutic and management approaches in the treatment of PTSD.