View clinical trials related to Stress Disorders, Post-Traumatic.
Filter by:This study uses positron emission tomography (PET) imaging to measure kappa opioid receptors (KOR) in the brains of individuals with and without post-traumatic stress disorder (PTSD). The investigators propose to recruit 45 drug-naïve individuals, N=15 patients with PTSD, N=15 trauma-exposed, but asymptomatic healthy control subjects (TC) and N=15 non-trauma exposed healthy control subjects (HC) to participate in one magnetic resonance imaging (MRI) and one PET study. The investigators will also carefully document trauma history, and collect behavioral and neuroendocrine measures to provide a more integrative view on the neurobiology of PTSD and its phenotype. The investigators predict PTSD will show greater carbon - 11 (11C)[11C]LY2795050 volume of distribution (VT) (i.e. KOR binding) values than control populations in an a priori defined PTSD circuit.
The objective of the proposed translational study is to test a model, based upon basic science studies, exploring multisystem impairments in PTSD including endocannabinoid (eCB) and glucocorticoids in the modulation of fear memories by examining the cannabinoid type 1 (CB1) receptor in a PTSD fear circuit as well as glucocorticoid function. The investigators propose that impaired eCB signaling in PTSD resulting in the maladaptive neurobehavioral response to the stressor is associated with an upregulation of the CB1 receptors and insufficient glucocorticoid signaling.
In this study, we propose to employ a randomized, double-blind, placebo-controlled, outpatient clinical trial to test the efficacy, safety, and tolerability of a 160 mg and 40 mg challenge of the mGlu2/3 agonist pomaglumetad methionil relative to placebo in modulating fear-potentiated startle response and behavior in adults with post-traumatic stress disorder (PTSD) (N=30). Each participant will receive a single dose of the study drug (40 mg vs 160 mg vs placebo in a 1:1:1 ratio).
Traumatic events have potentially debilitating long-lasting effects on the child's normal development and, therefore, should be effectively treated. Prolonged Exposure (PE) therapy has been found to be effective in reducing posttraumatic stress disorder symptoms in adults and in adolescents. It has not yet been tested in toddlers. The purpose of this study is to examine the treatment efficacy of 2 methods of treatment for toddlers with PTSD and their parents. A randomized control trial could examine the efficacy of PE versus dyadic play therapy (TP-CT). Exploration of these questions under more rigorous conditions would help broaden our knowledge about developmentally sensitive treatment tools for this age group. Our research hypotheses are: 1. PE would more effective than TP-CT in reducing post-traumatic symptoms in toddlers. 2. PE would more effective than TP-CT in reducing post-traumatic symptoms of the toddlers' parents. 3. These results will be preserved in a follow-up of 3-6 months post treatment. Following psychiatric assessment, 100 toddlers will be randomly assigned to PE and TP-CT (50 participants in each group).
This pilot project evaluates the efficacy of a mind-body awareness training intervention, Mind-Body Bridging (MBB), in veteran patients with PTSD and comorbid symptoms. Evidence for relative therapeutic benefit will be indicated by the difference in outcomes from pre- to post-intervention for PTSD as the primary outcome.
The purpose of the study is to evaluate proof of mechanism of PF-04457845, using a well-established neuroimaging paradigm including behavioral tasks selected to activate neuro-circuitry relevant to Post Traumatic Stress Disorder. It is hypothesized that PF-04457845 will modulate the Blood-oxygen-level dependent Functional Magnetic Resonance Imaging signal from the relevant neuro-circuits in patients with Post Traumatic Stress Disorder.
Background: - The autonomic nervous system helps control things that happen automatically in the body, like blood pressure, heart rate, and digestion. When it doesn t work properly, it s called dysautonomia. Researchers want to learn more about dysautonomias and train doctors to learn how to better diagnose them. Objectives: - To allow people with autonomic disorders to be evaluated. - To help fellows in the NIH Autonomic Disorders fellowship program see a variety of diseases in their training. Eligibility: - People age 18 and older with dysautonomia; children over age 2 if they might benefit - Healthy adult volunteers Design: - Participants will have different procedures depending on their symptoms. They will have one or more visits. They will have some but not all of the tests below. - Participants will have a medical history and physical exam. They may be tested for problems thinking. They may complete a symptom questionnaire. They may have their temperature and blood pressure taken. - Participants may have an intravenous line placed. A needle will guide a thin plastic tube into an arm vein. - Participants may have blood drawn several times. They may give a urine sample. - Participants may have an electrocardiogram. - How much blood a participant s heart is pumping and/or how much blood is flowing through their arm may be measured. The total amount of blood in their bloodstream may be measured. - Participants may have their ability to sweat and/or sense of smell tested. - Breathing, bowel sounds, and/or body functions may be monitored. - Pupil size, response to environmental temperature changes, and/or breathing may be measured. - Participants may have a bladder ultrasound. - Small pieces of skin may be taken for study.
Mild brain injury or concussion affects about four million Americans each year. Some people recover completely while others, especially those with multiple concussions, develop chronic headaches, neurodegenerative diseases and psychiatric disorders. One of the reasons that concussion is difficult to treat is that it is difficult to detect. Radiographic studies such as CT (computed tomography scan) are by definition unrevealing of structural injury in concussed patients. Some MRI (magnetic resonance imaging) sequences may be useful adjuncts in the diagnosis of concussion but even these are not consistently present in all patients with symptoms. Clinical tests for concussion often require baseline studies, and thus are generally reserved for athletes and others at highest risk for concussion. The investigators have developed a novel eye movement tracking algorithm performed while subjects watch television or a music video that determines whether the eyes are moving together (conjugate) or are subtly not together (disconjugate). The investigators preliminary data shows that people with lesions in their brain or recovering from brain injury have disconjugate gaze that is not detectable by ophthalmologic examination but is detected by our algorithm.
Combat-related post traumatic stress disorder (PTSD) has become an increasingly pressing public health problem in the United States following the overseas wars of the last decade. Rates of PTSD have skyrocketed in the military and among veterans, leading to increased rates of suicide, impairment on the job and off, and behavioral changes that negatively affect not just the veteran, but also his or her family. Although effective medication and psychotherapy treatments exist for combat-related PTSD, many individuals suffering with PTSD do not adequately respond to currently available treatment options, highlighting the need to develop and test new interventions for the disorder. To address this pressing clinical issue, the investigators will conduct a pilot study to determine if Whole Body Hyperthermia (WBH) reduces symptoms in adults suffering from combat-related PTSD. The investigators plan to recruit a sample of 10 medically healthy individuals with combat-related PTSD who will receive a single session of WBH to determine if this single session improves PTSD symptoms and, if so, whether this improvement will last at least 2 weeks. To do this, the study will include basic clinical and psychiatric assessments immediately before and one and four weeks after WBH. Because sleep is so often impaired in PTSD, the investigators will measure at-home sleep patterns for a week prior to and a week following the WBH session using sleep diaries and a wristwatch actigraphy device. Given scientific evidence from our research group that WBH may improve depression, the investigators anticipate that it may also be of benefit or adults suffering from combat-related PTSD.
The purpose of this study is to examine whether tobacco affects recovery from PTSD. There are 3 goals of the study; (1) to test if quitting tobacco prior to PTSD treatment affects treatment success, (2) to test how PTSD symptoms change in those who have quit tobacco compared to those who continue to use and (3) to explore how tobacco use and tobacco withdrawal symptoms change during PTSD treatment.