Search Results
Pathways Relating Amnestic MCI to a Mild Traumatic Brain Injury History (PATH)
This study will probe if the biological changes in amnestic mild cognitive impairment (aMCI) are related to a history of mild traumatic brain injury (mTBI) using high definition transcranial direct current stimulation (HD-tDCS) and blood-derived biomarker tools. Participants who Do as well as those who Do Not have a history of mTBI will be enrolled in the study.
Call 214-648-5005
studyfinder@utsouthwestern.edu, Hannah.Cabrera@UTSouthwestern.edu
• Active diagnosis of amnestic mild cognitive impairment
• Presence of an mTBI history for the mTBI+ group; absence of an mTBI history for a control sample
• Female and male subjects
• All races/ethnicities
• Age 55 years and older
• Fluent in English
• Mild traumatic brain injury within past year
• Lifetime history of moderate or severe brain injury
• Lifetime major neurologic syndromes (e.g., stroke, epilepsy, brain tumor)
• Lifetime major cardiovascular conditions (e.g., heart attack, heart failure)
• Current substance use disorder
• Current major psychiatric disorders (e.g., major depressive disorder, bipolar disorder)
• Current vision or hearing impairment that interferes with testing
• Any electronic and or metallic implants in the skull or brain
• Current medication use known to alter HD-tDCS reactivity
Study to Assess the Efficacy and Safety of MT-3921 in Subjects With Acute Traumatic Cervical Spinal Cord Injury
The purpose of this study is to compare the efficacy and safety of intravenous (IV) infusions of MT-3921 to placebo in subjects with acute traumatic cervical spinal cord injury. Subjects meeting eligibility criteria will enter the 6-month double-blind period. Subjects will be randomized in a 2:1 ratio to receive MT-3921 or placebo in a double blind manner.
Call 214-648-5005
studyfinder@utsouthwestern.edu, Kristen.Hall@UTSouthwestern.edu
• Provide written informed consent prior to beginning any study procedures
• Cervical spinal cord injury that meet all of the following criteria:
• Classified as AIS A, AIS B or AIS C
• ISNCSCI neurological level of injury between C4 and C7 (for C4, the subject must have at least 1 point of motor activity between C5 to C7)
• UEMS ≤28 at Screening
• Body mass index (BMI) <40
• Any concomitant injury that interferes with the procedures and examinations required by study protocol, including performance, interpretation or validity of neurological examinations
• Poly-traumatic Injury as defined by Injury Severity Score (ISS) values > 25
• Penetrating spinal cord injuries
• Complete transection of the spinal cord
• Any other significant pre-existing medical conditions prior to spinal cord injury or current conditions that, in the judgement of the iInvestigator, may increase the risks associated with study participation
• History of anaphylaxis or clinically significant allergic reactions to any medication
• History or presence of malignancy within the last 3 years prior to screening
• Subjects with current SARS-CoV-2 infection (COVID-19)
• Subjects with hereditary fructose intolerance
• Psychoactive substance use disorder
• Participation in any clinical trial of a new chemical entity within 12 weeks prior to Screening
• Female subjects who are pregnant or lactating
Multimodal Monitoring of Cerebral Autoregulation After Pediatric Brain Injury
Various methods have been studied to evaluate autoregulation. However, there is currently no universally accepted technique to assess integrity of the cerebral autoregulation neurovascular system. In the last decade, significant progress has been achieved in developing methods to assess cerebral autoregulation by quantifying cross-correlation between spontaneous oscillations in CBF or oxygenation and similar oscillations in arterial blood pressure. In this study the investigators will analyze the relationship between spontaneous fluctuations in mean arterial blood pressure and cerebral blood flow velocity or cerebral regional oxygenation to investigate two novel methods for measuring cerebral autoregulation, Transfer Function Analysis and Wavelet Coherence after acute pediatric brain injury.
Call 214-648-5005
studyfinder@utsouthwestern.edu, DARRYL.MILES@UTSouthwestern.edu
• Ages 28 days-18 years admitted to the PICU at Children's Medical Center Dallas
• Acute presentation (< 24 hour) onset of neurologic injury
• Acute neurologic injury can be due to any of the following mechanisms:
• Severe accidental or abusive traumatic brain injury
• Severe encephalopathy secondary to cardiac arrest
• Spontaneous intracranial hemorrhage
• Status epilepticus
• Stroke
• Presence of or pending placement of invasive indwelling arterial line for stand medical care
• Any patient with an ICP monitor placed as standard of care
• Patients without an arterial line placed as standard of care
• Patients unable to cooperate with wearing a TCD headpiece device
• Expected death within 24-48 hours
• Inability to place NIRS probes or insonate TCD signal due to massive facial or cranial injury
• Receiving an inhalational anesthetic agent
• Hemoglobinopathy, myoglobinemia or and hyperbilirubinemia (due to inaccurate NIRS readings)
Study to Compare the Efficacy and Safety of NT 201 (Botulinum Toxin) With Placebo for the Treatment of Lower Limb Spasticity Caused by Stroke or Traumatic Brain Injury (PATTERN)
The purpose of this study is to determine whether a single treatment with administration of 400 Units NT 201 (botulinum toxin) is superior to placebo (no medicine) for the treatment of lower limb spasticity caused by stroke or traumatic brain injury (Main Period). Participants will be assigned to the treatment groups by chance and neither the participants nor the research staff who interact with them will know the allocation. The following 4 to 5 treatment cycles will investigate the safety and tolerability of treatment with NT 201 (botulinum toxin) when administered in doses between 400 and 800 Units (Open Label Extension Period). All participants will receive the treatment and the dose will depend on whether only lower limb spasticity or combined upper and lower limb spasticity are treated.
Call 214-648-5005
studyfinder@utsouthwestern.edu, Victoria.Castillo@UTSouthwestern.edu
• Female or male subject ≥ 18 years and ≤ 85 years at screening
• Diagnosis of lower limb spasticity with or without upper limb spasticity of the same body side caused by stroke or traumatic brain injury
• Disabling ankle flexor spasticity presenting as pes equinus or pes equinovarus
• Modified Ashworth Scale-Bohannon [MAS] score of 2 or 3 points in the ankle plantar flexor of the target lower limb (supine position, knee extended)
• Minimum passive range of motion in ankle of the target lower limb (supine position, knee extended): 10°dorsiflexion and 20°plantarflexion
• At least 4 months since last botulinum neurotoxin [BoNT] injection for treatment of spasticity or any other condition
• For subjects receiving anticoagulation therapy, the investigator confirms and documents that the subject has an:
• Activated partial thromboplastin time [aPTT] ≤ 80 seconds (subjects on dabigatran or other direct thrombin inhibitors) or
• International normalized ratio [INR] value of ≤ 2.5 (subjects on coumarins or other anticoagulants monitored by INR)
• Generalized disorders of muscle activity (e.g. myasthenia gravis, Lambert Eaton syndrome, amyotrophic lateral sclerosis) or any other significant peripheral neuromuscular dysfunction which might interfere with the study
• Bilateral lower limb paresis/paralysis/spasticity or tetraparesis/paralysis/spasticity
• Body weight < 50 kg
• Severe atrophy of the target limb muscles
• Previous, ongoing or planned treatments of spasticity with intrathecal baclofen
• Previous, ongoing, or planned treatments of spasticity in the target lower limb with any of the following procedures: Surgical Intervention; Alcohol or phenol block; Muscle afferent block
• Physiotherapy or use of orthoses or splints at the target limb initiated less than 4 weeks before screening or expected to change during the double blind phase of the study
• Current or planned treatment with parenterally administered drugs that interfere with neuromuscular transmission (e.g. intrathecal baclofen, tubocurarine type muscle relaxants used in anesthesia), or local anesthetics in the treated region within 2 weeks prior to screening
• Infection or inflammation at the injection sites
• Subjects with presence or history of aspiration pneumonia, recurrent lower respiratory tract infections, or compromised respiratory function as per investigator's clinical judgment
• Pregnancy (as verified by a positive pregnancy test) or breast feeding
Brain Oxygen Optimization in Severe TBI, Phase 3 (BOOST3)
BOOST3 is a randomized clinical trial to determine the comparative effectiveness of two strategies for monitoring and treating patients with traumatic brain injury (TBI) in the intensive care unit (ICU). The study will determine the safety and efficacy of a strategy guided by treatment goals based on both intracranial pressure (ICP) and brain tissue oxygen (PbtO2) as compared to a strategy guided by treatment goals based on ICP monitoring alone. Both of these alternative strategies are used in standard care. It is unknown if one is more effective than the other. In both strategies the monitoring and goals help doctors adjust treatments including the kinds and doses of medications and the amount of intravenous fluids given, ventilator (breathing machine) settings, need for blood transfusions, and other medical care. The results of this study will help doctors discover if one of these methods is more safe and effective.
Call 214-648-5005
studyfinder@utsouthwestern.edu, Lauren.Kerich@UTSouthwestern.edu
• Non-penetrating traumatic brain injury
• Glasgow Coma Scale (GCS) 3-8 measured off paralytics
• Glasgow Coma Scale motor score < 6 if endotracheally intubated
• Evidence of intracranial trauma on CT scan
• Able to place intracranial probes and randomize within 6 hours of arrival at enrolling hospital
• Able to place intracranial probes and randomize within 12 hours from injury
• Age greater than or equal to 14 years
• Non-survivable injury
• Bilaterally absent pupillary response in the absence of paralytic medication
• Contraindication to the placement of intracranial probes
• Treatment of brain tissue oxygen values prior to randomization
• Planned use of devices which may unblind treating physicians to brain tissue hypoxia
• Systemic sepsis at screening
• Refractory hypotension
• Refractory systemic hypoxia
• PaO2/FiO2 ratio < 200
• Known pre-existing neurologic disease with confounding residual neurological deficits
• Known inability to perform activities of daily living (ADL) without assistance prior to injury
• Known active drug or alcohol dependence that, in the opinion of site investigator, would interfere with physiological response to brain tissue oxygen treatments
• Pregnancy
• Prisoner
• On EFIC Opt-Out list as indicated by a bracelet or medical alert
Safeguarding the Brain of Our Smallest Infants Phase III (SafeBoosC)
the SafeBoosC-III trial investigates the benefit and harms of treatment based on near-infrared spectroscopy monitoring compared with treatment as usual. The hypothesis is that treatment based on near-infrared spectroscopy monitoring for extremely preterm infants during the first 72 hours of life will result in a reduction in severe brain injury or death at 36 weeks postmenstrual age.
Call 214-648-5005
studyfinder@utsouthwestern.edu, Pollieanna.Sepulveda@UTSouthwestern.edu
• Infants born with postmenstrual age less than 28 weeks
• Signed informed consent, unless the NICU has chosen to use 'opt-out' or deferred consent as consent method.
• Missing written parental informed consent (if the 'opt-out' method is used for consent, lack of a record that the clinical staff have explained the trial and the 'opt-out' consent process to parents and/or a record in the infant's clinical file of parents' decision to opt-out, are exclusion criteria)
• Decision not to conduct full life support
• No possibility to place cerebral NIRS oximeter within six hours after birth
Brain Networks and Consciousness
General anesthesia (GA) is a medically induced state of unresponsiveness and unconsciousness, which millions of people experience every year. Despite its ubiquity, a clear and consistent picture of the brain circuits mediating consciousness and responsiveness has not emerged. Studies to date are limited by lack of direct recordings in human brain during medically induced anesthesia. Our overall hypothesis is that the current model of consciousness, originally proposed to model disorders and recovery of consciousness after brain injury, can be generalized to understand mechanisms of consciousness more broadly. This will be studied through three specific aims. The first is to evaluate the difference in anesthesia sensitivity in patients with and without underlying basal ganglia pathology. Second is to correlate changes in brain circuitry with induction and emergence from anesthesia. The third aim is to evaluate the effects of targeted deep brain stimulation on anesthesia induced loss and recovery of consciousness. This study focuses on experimentally studying these related brain circuits by taking advantage of pathological differences in movement disorder patient populations undergoing deep brain stimulation (DBS) surgery. DBS is a neurosurgical procedure that is used as treatment for movement disorders, such as Parkinson's disease and essential tremor, and provides a mechanism to acquire brain activity recordings in subcortical structures. This study will provide important insight by using human data to shed light on the generalizability of the current model of consciousness. The subject's surgery for DBS will be prolonged by up to 40 minutes in order to record the participant's brain activity and their responses to verbal and auditory stimuli.
Call 214-648-5005
studyfinder@utsouthwestern.edu, Nader.Pouratian@UTSouthwestern.edu
• Willingness and ability to cooperate during conscious operative procedure for up to 40 minutes
• Clinical diagnosis of Parkinson's disease or essential tremor
• Preoperative MRI without evidence of cortical or subdural adhesions or vascular abnormalities
• Patients with recent use (within one week) of anticoagulant or antiplatelet agent use
• Neurocognitive testing indicating amnestic cognitive deficits
• History of intolerance of propofol or medical indications to use an anesthetic other than propofol