MicroRNAs as potential biomarkers for diagnosis of post-traumatic stress disorder

Post-traumatic stress disorder is a mental disorder caused by exposure to severe traumatic life events.Currently,there are no validated biomarkers or laboratory tests that can distinguish between trauma survivors with and without post-traumatic stress disorder.In addition,the heterogeneity of clinical presentations of post-traumatic stress disorder and the overlap of symptoms with other conditions can lead to misdiagnosis and inappropriate treatment.Evidence suggests that this condition is a multisystem disorder that affects many biological systems,raising the possibility that peripheral markers of disease may be used to diagnose post-traumatic stress disorder.We performed a PubMed search for microRNAs(miRNAs)in post-traumatic stress disorder(PTSD)that could serve as diagnostic biomarkers and found 18 original research articles on studies performed with human patients and published January 2012 to December 2023.These included four studies with whole blood,seven with peripheral blood mononuclear cells,four with plasma extracellular vesicles/exosomes,and one with serum exosomes.One of these studies had also used whole plasma.Two studies were excluded as they did not involve microRNA biomarkers.Most of the studies had collected samples from adult male Veterans who had returned from deployment and been exposed to combat,and only two were from recently traumatized adult subjects.In measuring miRNA expression levels,many of the studies had used microarray miRNA analysis,miRNA Seq analysis,or NanoString panels.Only six studies had used real time polymerase chain reaction assay to determine/validate miRNA expression in PTSD subjects compared to controls.The miRNAs that were found/validated in these studies may be considered as potential candidate biomarkers for PTSD and include miR-3130-5p in whole blood;miR-193a-5p,-7113-5p,-125a,-181c,and-671-5p in peripheral blood mononuclear cells;miR-10b-5p,-203a-3p,-4488,-502-3p,-874-3p,-5100,and-7641 in plasma extracellular vesicles/exosomes;and miR-18a-3p and-7-1-5p in blood plasma.Several important limitations identified in the studies need to be taken into account in future studies.Further studies are warranted with war veterans and recently traumatized children,adolescents,and adults having PTSD and use of animal models subjected to various stressors and the effects of suppressing or overexpressing specific microRNAs.

Ginger oil-loaded transdermal adhesive patch treats post-traumatic stress disorder

Objective:To find a viable alternative to reduce the number of doses required for the patients with post-traumatic stress disorder(PTSD),and to improve efficacy and patient compliance.Methods: In this study,we used ginger oil,a phytochemical with potential therapeutic properties,to prepare ginger oil patches.High-performance liquid chromatography(HPLC)was used to quantify the main active component of ginger oil,6-gingerol.Transdermal absorption experiments were conducted to optimize the various pressure-sensitive adhesives and permeation enhancers,including their type and concentration.Subsequently,the ginger oil patches were optimized and subjected to content determination and property evaluations.A PTSD mouse model was established using the foot-shock method.The therapeutic effect of ginger oil patches on PTSD was assessed through pathological sections,behavioral tests,and the evaluation of biomarkers such as tumor necrosis factor-α(TNF-α),interleukin-6(IL-6),brain-derived neurotrophic factor(BDNF),and melatonin(MT).Results: The results demonstrated that ginger oil patches exerted therapeutic effects against PTSD by inhibiting inflammatory responses and modulating MT and BDNF levels.Pharmacokinetic experiments revealed that ginger oil patches maintained a stable blood drug concentration for at least one day,addressing the rapid metabolism drawback of 6-gingerol and enhancing its therapeutic efficacy.Conclusions: Ginger oil can be prepared as a transdermal drug patch that meets these requirements,and the bioavailability of the prepared patch is better than that of oral administration.It can improve PTSD with good patient compliance and ease of administration.Therefore,it is a promising therapeutic formulation for the treatment of PTSD.

Addressing trauma,post-traumatic stress disorder,and posttraumatic growth in breast cancer patients

BACKGROUND Breast cancer(BC)is a common cancer among females in Africa.Being infected with BC in Africa seems like a life sentence and brings devastating experiences to patients and households.As a result,BC is comorbid with trauma,post-traumatic stress disorder(PTSD),and post-traumatic growth(PTG).AIM To identify empirical evidence from peer-reviewed articles on the comorbidity trajectories between BC and trauma,BC and PTSD,and BC and PTG.METHODS This review adhered to the PRISMA guidelines of conducting a systematic review.Literature searches of the National Library of Medicine,Scopus,PubMed,Google Scholar,and Scopus databases were conducted using search terms developed for the study.The search hint yielded 769 results,which were screened based on inclusion and exclusion criteria.At the end of the screening,24 articles were included in the systematic review.RESULTS BC patients suffered trauma and PTSD during the diagnosis and treatment stages.These traumatic events include painful experiences during and after diagnosis,psychological distress,depression,and cultural stigma against BC patients.PTSD occurrence among BC patients varies across African countries,as this review disclosed:90%was reported in Kenya,80%was reported in Zimbabwe,and 46%was reported in Nigeria.The severity of PTSD among BC patients in Africa was based on the test results communicated to the patients.Furthermore,this review revealed that BC patients experience PTG,which involves losing,regaining,and surrendering final control over the body,rebuilding a personified identity,and newfound appreciation for the body.CONCLUSION Patients with BC undergo numerous traumatic experiences during their diagnosis and treatment.Psychological interventions are needed in SSA to mitigate trauma and PTSD,as well as promote PTG.

Post-Traumatic Stress Disorder among Defence and Security Forces in Northern Benin (2023)

Introduction: Post-traumatic stress disorder (PTSD) is defined as “actual exposure to death or the threat of death, serious injury or sexual violence”, either directly or indirectly, resulting in a symptomatic procession of repetition, avoidance, neurovegetative hyperactivity and individualized symptoms, with or without negative cognitive and mood changes. It therefore goes without saying that the defence and security forces constitute a high-risk population in need of attention. Objective: To study post-traumatic stress disorder in defence and security forces in the city of Parakou in 2023. Methods: Descriptive cross-sectional study conducted from December 2022 to July 2023. The study population consisted of active military, republican police and firefighters in the city of Parakou in 2023. Non-proportional stratified sampling was used, given the inaccessibility of the source population size for national security reasons. Post-traumatic stress disorder was assessed using the “post-traumatic stress disorder checklist-5 (PCLS-5) scale. Results: A total of 305 subjects participated in the survey. Males dominated 90.2%. The most represented corps was the Republican Police (41.6%), most of whom were non-commissioned officers (46.6%). The majority count between 11 and 20 years of service (48.9%), with 2 to 5 missions completed (67.5%). The calculated prevalence of post-traumatic stress disorder was 11.8%, based on the post-traumatic stress disorder checklist-5 (PCL-5). Of the 36 respondents with post-traumatic stress disorder, 20 (55.6%) had experienced an armed attack, 25 (69.4%) had witnessed a violent death, 18 (50.0%) had witnessed the agony of a colleague, 15 (41.7%) had been exposed to a fire or explosion, while 26 (72.2%) had been traumatized by physical and/or verbal aggression. 5 (13.9%) had consulted a specialist psychiatrist, while 6 (16.7%) were on medication and 26 (72.2%) used sport as a means of maintaining physical and mental health. Respectively 22 (61.1%) and 21 (58.3%) had definite symptoms of anxiety and depression. Multivariate analysis revealed a significant association between post-traumatic stress disorder and the following variables: total number of children ≤ 2 (p = 0.015), comorbidities such as arterial hypertension (p = 0.007), history of hepatitis (p = 0.017), work accidents (p = 0.016), alcohol dependence (p = 0.004), domestic violence (p = 0.004), psychological violence (p = 0.017) and anxiety disorders (p Conclusion: Defence and security personnel can also be prey to post-traumatic stress disorder (PTSD), which needs to be systematically taken into account when they are subjected to trauma in the course of their duties. Mental health should be an integral part of the periodic medical check-up objectives for defence and security forces throughout the country.

Correlation Study of Neurotransmitter and Immune Levels in Pre-Hospital Emergency Nurses with Post-Traumatic Stress Disorder

Objective: To investigate the occurrence of PTSD in pre-hospital emergency nurses and its related factors, and to compare the differences of neurotransmitter and immune-related factors between pre-hospital emergency nurses who experienced traumatic events and those who did not develop PTSD and healthy people. How: Post-traumatic Stress Disorder Self-Rating Scale (PCL-C) tests were performed on pre-hospital emergency nurses in PTSD group, non-PTSD group and healthy control group, and the plasma monoamine neurotransmitters and serum cytokines were determined by double-antibody sandwich ABC-ELISA assay using enzyme-linked adsorption kit provided by Shanghai Xitang Biotechnology Co., Ltd. Results: 1) There were statistically significant differences in PCL-C scores between PTSD group, non-PTSD group and healthy group (p α between PTSD group, non-PTSD group and healthy group (p Conclusion: Pre-hospital emergency nurses should have early psychological intervention and guidance to reduce the occurrence of PTSD in emergency and emergency nurses.

Effects of Pearl Yangxin Anshen Decoction on HAMD and PTSD-SS Scores, Cytokines and Related Metabolites in Patients with Post-Traumatic Stress Disorder

Objective: This paper aims to observe the Pearl Yangxin Anshen Decoction to influence the score of HAMD and PTSD-SS, the changes of the cytokines and the related metabolic product in patients with PTSD. Methods: From June 2015 to May 2016, in the traditional Chinese medicine clinics of Hainan Province People’s Hospital, there were 50 patients with PTSD, the age were from 30 to 60, they were randomly divided into treatment group (25 cases) and control group (25 cases), then compared the scores of HAMD and PTSD-SS between the two groups, searched the changes of cytokines and the related metabolic product. Results: In the treatment group: before and after treatment the scores of PTSD-SS were 65.64 ± 7.02, 28.32 ± 4.18, and the scores of HAMD were 29.28 ± 1.97, 11.72 ± 2.13;In the control group: before and after treatment the scores of PTSD-SS were 63.24 ± 6.16, 31.40 ± 4.29, the scores of HAMD were 30.24 ± 2.05, 13.08 ± 2.30. After 3 months patients in treatment group the scores of PTSD-SS and HAMD were lower than the control group (t = 2.570, P = 0.013, t = -2.1640, P = 0.035). In the control group: before and after 3 months treatment the IL-2 levels respectively were 79.84 ± 26.46 pg/ml, 56.18 ± 22.67 pg/ml, the IL-6 levels respectively were 110.83 ± 47.65 pg/ml, 59.67 ± 44.68 pg/ml, the IL-8 levels respectively were 73.11 ± 78.51 pg/ml, 55.83 ± 81.94 pg/ml, the NE levels respectively were 420.04 ± 674.75 pg/ml, 185.31 ± 417.91 pg/ml, the MDA levels respectively were 112.35 ± 62.87 ng/ml, 60.42.33 ± 53.64 ng/ml, the NO levels were 126.6 ± 47.4 μmol/L, 78.6 ± 45.7 μmol/L, the VIP levels were 396.6 ± 144.4 pg/ml, 122.4 ± 111.5 pg/ml. In the treatment group: before and after 3 months treatment the IL-2 levels respectively were 86.00 ± 32.29 pg/ml, 53.84 ± 27.01 pg/ml, the IL-6 levels respectively were 108.21 ± 44.60 pg/ml, 42.46 ± 42.16 pg/ml, the IL-8 levels respectively were 81.48 ± 94.19 pg/ml, 54.07 ± 84.15 pg/ml, the NE levels respectively were 392.93 ± 592.84 pg/ml, 243.85 ± 588.45 pg/ml, the MDA levels respectively were 117.58 ± 63.37 ng/ml, 45.91 ± 38.94 ng/ml, the NO levels respectively were 135.9 ± 46.4 μmol/L, 72.6 ± 46.6 μmol/L, the VIP levels respectively were 414.0 ± 140.1 pg/ml, 185.8 ± 105.3 pg/ml. In the two groups as the extension of treatment time, the content of IL-2, IL-8, IL-6, NE, MDA, NO, and VIP were gradually reduced, and the level of reduction of the treatment group patients was higher than the control group, the change of ACTH and SOD levels just the opposite. Conclusion: The Pearl Yangxin Anshen Decoction could improve the symptoms of psychological anxiety, depression and other psychological problems in patients with PTSD, and influence the change of cytokines and related metabolites product.

Risk factors for post-traumatic stress disorder among young and middle-aged cancer patients in the intensive care unit:A casecontrol study

BACKGROUND Young and middle-aged cancer patients in intensive care unit(ICU)often suffer from stress and pressure,causing huge physical and mental damage.Currently,there is few research on post-traumatic stress disorder(PTSD)among young and middle-aged cancer patients in ICU in China,and the psychological status of patients who have experienced both cancer development and ICU stay is still unclear.AIM To explore the risk factors for PTSD in young and middle-aged patients with cancer in ICU.METHODS Using convenient sampling method,we enrolled 150 young and middle-aged patients with cancer who were admitted to the ICU of our center during the period from July to December 2020.The general data of the patients and PTSDrelated indicators were collected.The Impact of Event Scale-Revised(IES-R)was used for assessing PTSD one month after the discharge from the ICU.Binary Logistic regression analysis was performed to assess the independent risk factors for PTSD in these patients.RESULTS Among these 150 patients,32(21.33%)were found to be with PTSD.Binary Logistic regression analysis revealed that factors significantly associated with PTSD among young and middle-aged patients with cancer in ICU included monthly income(OR=0.24,P=0.02),planned transfers(OR=0.208,P=0.019),and Acute Physiology and Chronic Health Evaluation(APACHE II)score(OR=1.171,P=0.003).CONCLUSION The low monthly income,unplanned transfers,and increased APACHE II score are the risk factors for PTSD in young and middle-aged patients with cancer in ICU.

Research progress on the biological effects of BDNF and proBDNFs in post-traumatic stress disorder

Many people were affected psycho-logically and even traumatized by the outbreak of new coronavirus pneumonia in 2020,which has the potential to lead to post-traumatic stress disorder.Many neuropsy-chiatric illnesses are aided by brain-derived neurotrophic factor and its predecessors.Brain-derived neurotrophic factor precursors have the biological impact of triggering neuronal apoptosis and hindering neural regeneration,and brain-derived neurotrophic factor itself can help increase the growth,survival,and differentiation of central and peripheral nerve cells.This article provides an in-depth study of their biological impacts in post-traumatic stress disorder in an attempt to understand the biological effects of brain-derived neurotrophic factor and its precursor proteins.

A Case Report on Sandplay Therapy for a 3-Year-11-Month-Old Child with Post-Traumatic Stress Disorder

This report presents a case study of sandplay therapy for a 3-year-11-month-old child with post-traumatic stress disorder. The child had experienced a distressing traumatic event and exhibited symptoms of anxiety, fear, and traumatic reenactment. Sandplay therapy, as a therapeutic modality, was utilized to provide a safe environment for the child to express and process their inner experiences. The case report provides a detailed account of the child’s presentation, treatment goals, therapeutic strategies, and treatment outcomes. Through sandplay therapy, the child achieved emotional release, resolution of internal conflicts, and a reframing of the traumatic event. Ultimately, a significant reduction in symptoms of post-traumatic stress disorder was observed, along with improved functioning and psychological well-being.

The Effectiveness of Psychotherapy on Posttraumatic Stress Disorder in Soldier:A Systematic Review

The objective of this systematic review is to examine the effectiveness of psychotherapy in treating Post-Traumatic Stress Disorder(PTSD)in military personnel.PubMed,Web of Science,The Cochrane Library,EBSCO and CNKI databases were searched from 1 January,2000 to November 2022 for Randomized Controlled Trials(RCTs)on psychotherapeutic interventions for military PTSD.The physical Therapy Evidence Database(PEDro)scale was used to evaluate the quality of the literature.Two researchers conducted literature screening,data extraction,and risk bias assessment in accordance with inclusion and exclusion criteria.Ultimately,49 RCTs were included,involving a total of 5073 veterans,retired and active military from four countries.The average score on the PEDro scale was 7.60.The primary psychotherapeutic modalities for military PTSD intervention include Cognitive-Behavioral Therapy,Exposure Therapy,Mindfulness interventions,psychotherapy based on new technological tools,and other emerging psychotherapeutic tools.The review highlights that Cognitive Processing Therapy(CPT)and Prolonged Exposure Therapy(PET)stand out as the primary psychotherapeutic modalities for treating PTSD in military personnel.In cases where CPT and PET yield limited benefits,Mindfulness interventions emerge as effective alternatives.Moreover,considering the diverse needs and high dropout rates in the military,population,the review suggests using web-based,computer,and virtual reality technology tools as supplements to first-line treatments(CPT/PET)to enhance overall intervention effectiveness.For the advancement of future psychotherapeutic initiatives,there is a pronounced emphasis on prioritizing proven first-line interventions,CPT and PET while also recognizing the potential of mindfulness-based interventions as credible alternatives.In tandem with this,the active integration of technological tools is advocated to amplify the therapeutic impact of conventional psychological treatment modalities.

Post-traumatic stress disorder risk and brain-derived neurotrophic factor Val66Met

Brain-derived neurotrophic factor(BDNF), which regulates neuronal survival, growth differentiation, and synapse formation, is known to be associated with depression and post-traumatic stress disorder(PTSD). However, the molecular mechanism for those mental disorders remains unknown. Studies have shown that BDNF is associated with PTSD risk and exaggerated startle reaction(a major arousal manifestation of PTSD) in United States military service members who were deployed during the wars in Iraq and Afghanistan. The frequency of the Met/Met in BDNF gene was greater among those with PTSD than those without PTSD. Among individuals who experienced fewer lifetime stressful events, the Met carriers have significantly higher total and startle scores on the PTSD Checklist than the Val/Val carriers. In addition, subjects with PTSD showed higher levels of BDNF in their peripheral blood plasma than the non-probable-PTSD controls. Increased BDNF levels and startle response were observed in both blood plasma and brain hippocampus by inescapable tail shock in rats. In this paper, we reviewed these data to discuss BDNF as a potential biomarker for PTSD risk and its possible roles in the onset of PTSD.

Post-Traumatic Stress Disorder after typhoon disaster and its correlation with platelet 5-HT concentrations

Objective:To investigate residents' psychological stress factors and research the correlation between Post-Traumatic Stress Disorder(PTSD) and platelet 5-HT concentrations so as to provide scientific bases for diagnosis and treatment of PTSD and psychological intervention for people in the disaster area.Methods:A questionnaire survey of 5 500 residents who have accepted psychological help was conducted by the emphatic investigation method.While high performance liquid chromatography were used to detect the platelet serotonin concentration of 100 PTSD patients and 100 healthy people.Results:(1) Of the 5 114 cases,3 167(61.93%) showed positive results in screening for psychological stress symptoms,and 399(7.8%) were tested with apparent PTSD symptoms.Male and female prevalence showed no significant difference(X^2=-0.380,P=0.704).The differences of prevalence between different age groups were statistically significant(X^2=381.89,P=0.000).(2) The differences in the level of platelet 5-HT between PTSD patients and normal control group were statistically significant.Conclusions:The typhoon of Hainan province caused relatively large psychological problems to the disaster victims.Compared with normal control group,the platelet 5-HT levels of PTSD patients in the disaster areas are lower.It may be related to incidents exposure levels,cultural background,religious ideas,social concerns and psychological rescue of the residents who live in the disaster areas of Hainan.

Post-traumatic stress disorder status in a rescue group after the Wenchuan earthquake relief

Previous studies have suggested that the incidence of post-traumatic stress disorder in earthquake rescue workers is relatively high. Risk factors for this disorder include demographic characteristics, earthquake-related high-risk factors, risk factors in the rescue process, personality, social support and coping style. This study examined the current status of a unit of 1 040 rescue workers who participated in earthquake relief for the Wenchuan earthquake that occurred on May 12th, 2008. Post-traumatic stress disorder was diagnosed primarily using the Clinician-Administered Post-traumatic Stress Disorder Scale during structured interviews. Univariate and multivariate sta-tistical analyses were used to examine major risk factors that contributed to the incidence of post-traumatic stress disorder. Results revealed that the incidence of this disorder in the rescue group was 5.96%. The impact factors in univariate analysis included death of family members, contact with corpses or witnessing of the deceased or seriously injured, near-death experience, severe injury or mental trauma in the rescue process and working at the epicenter of the earthquake. Correlation analysis suggested that post-traumatic stress disorder was positively correlated with psychotic and neurotic personalities, negative coping and low social support. Impact factors in mul-tivariate logistic regression analysis included near-death experience, severe injury or mental trauma, working in the epicenter of the rescue, neurotic personality, negative coping and low social support, among which low social support had the largest odds ratio of 20.42. Findings showed that the oc-currence of post-traumatic stress disorder was the result of the interaction of multiple factors.

Effects of therapeutic horseback riding on post-traumatic stress disorder in military veterans

Background:Large numbers of post-deployment U.S.veterans are diagnosed with post-traumatic stress disorder(PTSD)and/or traumatic brain injury(TBI),leading to an urgent need for effective interventions to reduce symptoms and increase veterans’coping.PTSD includes anxiety,flashbacks,and emotional numbing.The symptoms increase health care costs for stress-related illnesses and can make veterans’civilian life difficult.Methods:We used a randomized wait-list controlled design with repeated measures of U.S.military veterans to address our specific aim to test the efficacy of a 6-week therapeutic horseback riding(THR)program for decreasing PTSD symptoms and increasing coping self-efficacy,emotion regulation,social and emotional loneliness.Fiftyseven participants were recruited and 29 enrolled in the randomized trial.They were randomly assigned to either the horse riding group(n=15)or a wait-list control group(n=14).The wait-list control group experienced a 6-week waiting period,while the horse riding group began THR.The wait-list control group began riding after 6 weeks of participating in the control group.Demographic and health history information was obtained from all the participants.PTSD symptoms were measured using the standardized PTSD Checklist-Military Version(PCL-M).The PCL-M as well as other instruments including,The Coping Self Efficacy Scale(CSES),The Difficulties in Emotion Regulation Scale(DERS)and The Social and Emotional Loneliness Scale for Adults-short version(SELSA)were used to access different aspects of individual well-being and the PTSD symptoms.Results:Participants had a statistically significant decrease in PTSD scores after 3 weeks of THR(P≤0.01)as well as a statistically and clinically significant decrease after 6 weeks of THR(P≤0.01).Logistic regression showed that participants had a 66.7%likelihood of having lower PTSD scores at 3 weeks and 87.5%likelihood at 6 weeks.Under the generalized linear model(GLM),our ANOVA findings for the coping self-efficacy,emotion regulation,and social and emotional loneliness did not reach statistical significance.The results for coping self-efficacy and emotion regulation trended in the predicted direction.Results for emotional loneliness were opposite the predicted direction.Logistic regression provided validation that outcome effects were caused by riding longer.Conclusion:The findings suggest that THR may be a clinically effective intervention for alleviating PTSD symptoms in military veterans.

Post-traumatic stress disorder among paramedic and hospital emergency personnel in south-east Iran

BACKGROUND:Paramedic and emergency personnel may encounter directly many events that threat their own wellbeing during their daily work.This study was conducted to examine the prevalence rate of post-traumatic stress disorder(PTSD) among two groups of paramedic and emergency personnel in south-east Iran.METHODS:The study employed a descriptive design and was conducted in four hospital emergency wards and a pre-hospital emergency base supervised by Kerman Medical University.Using Mississippi PTSD,we assessed the prevalence rate in paramedics(n=150) and emergency personnel(n=250).RESULTS:The two groups had different levels of education,marital status,experience of traumatic events,work hours per month,and gender.Most(94%) of paramedic and hospital emergency personnel reported moderate PTSD.The two groups had significant different levels of PTSD in all subscale.CONCLUSION:The study suggests that health care managers should organize systematic and dynamic policies and procedures in dealing with PTSD to assist both groups of personnel.

Association of post-traumatic stress disorder and work performance: A survey from an emergency medical service, Karachi, Pakistan

BACKGROUND: The purpose of the study was to explore the association between posttraumatic stress disorder(PTSD) and work performance of emergency medical services personnel in Karachi, Pakistan.METHODS: Emergency medical service personnel were screened for potential PTSD using Impact of Event Scale-Revised(IES-R). Work performance was assessed on the basis of fi ve variables: number of late arrivals to work, number of days absent, number of days sick, adherence to protocol, and patient satisfaction over a period of 3 months. In order to model outcomes like the number of late arrivals to work, days absent and days late, negative binomial regression was applied, whereas logistic regression was applied for adherence to protocol and linear for patient satisfaction scores.RESULTS: Mean scores of PTSD were 24.0±12.2. No association was found between PTSD and work performance measures: number of late arrivals to work(RRadj 0.99; 0.98–1.00), days absent(RRadj 0.98; 0.96–0.99), days sick(RRadj 0.99; 0.98–1.00), adherence to protocol(ORadj 1.01; 0.99–1.04) and patient satisfaction(β 0.001%–0.03%) after adjusting for years of formal schooling, living status, coping mechanism, social support, working hours, years of experience and anxiety or depression.CONCLUSION: No statistically significant association was found between PTSD and work performance amongst EMS personnel in Karachi, Pakistan.

Dementia in military and veteran populations:a review of risk factors—traumatic brain injury,post-traumatic stress disorder,deployment,and sleep

The military population face a unique set of risk factors that may increase the risk of being diagnosed with dementia.Traumatic brain injury(TBI)and post-traumatic stress disorder(PTSD)have a higher prevalence in this group in comparison to the civilian population.By delving into the individual relationships between TBI and dementia,and PTSD and dementia,we are able to better explore dementia in the military and veteran populations.While there are some inconsistencies in results,the TBI-dementia association has become more widely accepted.Moderate-tosevere TBI has been found to increase the risk of being diagnosed with Alzheimer’s disease.A correlation between PTSD and dementia has been established,however,whether or not it is a causal relationship remains unclear.Factors such as blast,combat and chemical exposure may occur during a deployment,along with TBI and/or PTSD diagnosis,and can impact the risk of dementia.However,there is a lack of literature exploring the direct effects of deployment on dementia risk.Sleep problems have been observed to occur in those following TBI,PTSD and deployment.Poor sleep has been associated with possible dementia risk.Although limited studies have focused on the link between sleep and dementia in military and veteran populations,sleep is a valuable factor to study due to its association and interconnection with other military/veteran factors.This review aims to inform of various risk factors to the cognitive health of military members and veterans:TBI,PTSD,deployment,and sleep.

Prevalence of post-traumatic stress disorder after earthquakes among the elderly in China: A meta-analysis

BACKGROUND: The study aims to investigate the occurrence of post-traumatic stress disorder(PTSD) after earthquakes among the elderly. METHODS: Data from cross-sectional studies focusing on the prevalence of PTSD after earthquakes among the elderly were collected from Pub Med, EMBASE, Cochrane Library, and China National Knowledge Infrastructure in December 2019. The search terms included post-traumatic stress disorder, earthquake, and elderly. This study used Review Manager 5.0 to evaluate the impact of the results. In addition, forest plots, sensitivity analysis, and bias analysis were carried out on the included articles. The combined estimate of the risk ratio and the standard deviation of the 95% confidence interval(95% CI) were measurements of the size of the effect.RESULTS: There were 4,834 patients included from 10 eligible studies. The sample sizes of PTSD group and non-PTSD group were 1,277 and 3,557, respectively. The meta-analysis showed that the overall occurrence of PTSD after earthquakes among the elderly was 0.25;the occurrence in females was higher than that in males, and the occurrence in the same province indicated little difference(Wenchuan city 0.25 and Ya'an city 0.24).CONCLUSIONS: After earthquakes, the occurrence of PTSD is higher among the elderly than among other age groups, and higher among the females than among the males, while there is little difference among different areas within the same province. This indicated that prioritized specific psychological interventions should be provided to the aged and the females.

Correlation of gut microbiota and neurotransmitters in a rat model of post-traumatic stress disorder

Objective:To determine the effect of gut microbiota on a rat model of post-traumatic stress disorder(PTSD)and explore the correlation of gut microbiota with behavior and neurotransmitters.Methods:We established a single prolonged stress(SPS)model to examine the pathogenesis of PTSD on rat behavior,gut microbiota,and neurotransmitter levels.Rats were separated into control and model groups,and neurotransmitter levels were measured using enzyme linked immunosorbent assay.Then,16 S rRNA sequencing was used to compare the gut microbiota between the control and model groups.Results:Compared with those in the control group,freezing time significantly increased,while number of standing upright,crossing frequency,time spent in the central arena,and total distance traveled were significantly reduced in the model group after exposure to SPS(all P<.05).Meanwhile,serotonin,or 5-hydroxytryptamine,levels in the brain in the model group were significantly lower than those the control group(P紏.0332).In addition,changes were observed in the gut microbiota diversity and relative abundances of bacterial phyla,orders,families,and genera in the model group.Especially,changes in Firmicutes,Bacteroidetes,Cyanobacteria,and Proteobacteria levels were most pronounced after SPS exposure.Correlation analysis showed that the strongest positive correlation was found between Bacteroidaceae and 5-HT(P?.0009).Moreover,RF32 abundance was the most negatively related to 5-HT(P?.0009),crossing frequency(P?.0007),and total distance(P?.0003).Conclusion:Our results suggest that SPS model rats showed differences in behavior,neurotransmitter levels,and gut microbiota with control rats.Moreover,Firmicutes,Bacteroidetes,Cyanobacteria,and Proteobacteria were most relevant to the exhibited fear-like and anxiety-like behaviors and significant serotonin content reduction in SPS model rats.

Clinical application of repetitive transcranial magnetic stimulation for post-traumatic stress disorder:A literature review

The efficacy of traditional treatment for post-traumatic stress disorder(PTSD)is still unsatisfactory.Repetitive transcranial magnetic stimulation(rTMS)has been widely used in the treatment of various types of mental disorders,including PTSD.Although rTMS has been demonstrated to be effective in many cases,there are still arguments regarding its mechanism and protocol.This review aims to summarize the origin,development,principle,and future direction of rTMS and introduce this neuro-stimulation therapy to relevant clinicians.