Melatonin Secretion and Sleep Quality in Spinal Cord Injury Patients
Spinal Cord InjuriesTo evaluate the relationship between secretion of melatonin and sleep quality in spinal cord injury patients versus a database of healthy volunteers.
Development of a Model of Shoulder Pain Following Spinal Cord Injury
Spinal Cord InjuryThis study will investigate the progression of musculoskeletal (shoulder muscle flexibility, muscle strength, movement coordination, and rotator cuff health) and psychosocial (fear of movement, pain catastrophizing) impairments for the first year following SCI, starting with inpatient rehabilitation, at 6 months, and at 1 year following SCI. We will use the information obtained from this study information to develop a biopsychosocial prospective surveillance model, a method for early detection, intervention, and moderation of shoulder pain. Specifically, we will identify sources of biopsychosocial shoulder pain to establish effective physical and cognitive-behavioral treatment to prevent loss of function and independence in individuals with SCI who depend on their arms for activities of daily living, transfers, and wheelchair propulsion.
The Natural History of Traumatic Spinal Cord Injury Using fMRI, MRS and DTI
Central Cord SyndromeTraumatic spinal cord injury is a common injury to the spine and can lead to a clinical syndrome called central cord syndrome (CCS). CCS is an incomplete spinal cord injury where one starts to lose more motor function in the upper rather than lower extremities. It affects a wide range of the population from the young to the old. However, the natural history of CCS is poorly understood. Research has shown that the injury resulting in CCS might be due to the pinching or compressing of the spinal cord. This creates damage to a part of the spinal cord and creates difficulties in the signal getting through. We believe that we can gain a better understanding of the natural history of incomplete spinal cord injury as well as the recovery process. It is possible to track many changes in the brain and motor function through a variety of methods. One can track the concentrations of different chemicals (metabolites) by using magnetic resonance spectroscopy (MRS), changes in brain activation by using functional magnetic resonance imaging (fMRI) and thread-like nerve fibers in the spine by using diffusion tensor imaging (DTI). In our study we will be detecting differences in brain metabolism and activation of different parts of the brain during specific movement and in the nerve fibers in the brain. We hypothesize that there will be decreased levels of N-acetylaspartate (NAA, a putative marker of neuronal function) and decreased levels of glutamate (the primary excitatory neurotransmitter) in the motor cortex in patients with CCS when compared with controls. Over time, we hypothesize that the normalization of metabolite levels will correlate with the extent of neurologic recovery. We also hypothesize a reorganization of brain activation patterns with time such that patients will show increased volumes of activation in the motor cortex with recovery and that this will correlate with the extent of neurologic outcome. Over time, we predict that there will be normalization of the fibre track anatomy that will correlate with neurological recovery.
Feasibility Study for the Use of Low-magnitude, High Frequency Mechanical Stimulation of Bone in...
Spinal Cord InjuriesIn persons with SCI, because of inherent considerations, the use of mechanical stimulation has not been studied to determine improvement in bone mass. To achieve maximum transmission of the vibration from a vibrating plate to the lower body, the legs must be extended and the feet firmly placed against the surface plate of the device. Thus, these logistical considerations must be addressed to perform this mechanical intervention in persons with SCI. In those with complete or almost complete motor injury, there is lack of musculoskeletal function below the level of the lesion, which would prevent rigid straight leg extension and pressing one's feet against a surface, regardless of the angle of tilt that would permit adequate transmission of impulse in an able-bodied individual (preliminary data). However, in one subject with SCI, there was measurable, albeit low level, transmission of vibration with increasing angles of tilt (preliminary data). Because of the ability to transmit some signal in an individual with complete SCI, the possibility exists that with forms or mechanical support/manipulation, greater signal transmission may be possible. The study will be able to determine the best angle to transmit mechanical vibration through the lower body of SCI patients.
Functional and Physiological Responses to Lokomat Therapy (Pilot Study)
Spinal Cord InjuriesMultiple Sclerosis1 moreIndividuals with neurological deficiencies such as those who have spinal cord injury, stroke, traumatic brain injury, Parkinson's disease, and multiple sclerosis often lose their ability to ambulate over ground. Loss of functional mobility not only impedes everyday life, but may also affect many systems and organs in the body. The investigators are interested in obtaining a wide variety of data in order to obtain a better understanding of changes that occur as a result of receiving Lokomat therapy. The investigators will be studying body composition, cardiac, pulmonary, endocrine, metabolic, and molecular changes after a 12-week clinical therapy program.
Pilot Study: The Role of Macrophage Migration Inhibitory Factor (MIF) in Spinal Cord Injury
Spinal Cord InjuryThe purpose of the study is to investigate inflammatory and other substances that may be elevated in the blood and blood cells following spinal cord injury (SCI). These substances will be evaluated in samples from people who have had a spinal cord injury due to trauma (e.g. car accident or a fall) within the first week (acute) or at least one year ago (chronic). Specifically, the study will evaluate the presence and levels of a protein, macrophage migration inhibitory factor (MIF). MIF is released by cells and has a specific effect on the way cells behave, communicate and work together. In several other medical conditions, MIF is known to increase inflammation in the body. By comparing blood samples from individuals with spinal cord injury and uninjured (no spinal cord injury) individuals, the investigators will try to find out if MIF levels are increased in people with SCI. Investigators will also use these samples to measure other proteins that increase inflammation in the body and to see if the biological activities of MIF can be reduced in a test tube by adding other substances to the blood samples. It is hoped that this study of MIF and other proteins related to inflammation will help improve the treatment of SCI in the future. We hope to enroll a total of 312 subjects in this study (50 with acute spinal cord injury, 125 with chronic spinal cord injury, and 137 uninjured individuals).
Scheduled Telephone Intervention for Individuals With Spinal Cord Injury and Their Families
Spinal Cord InjuryThe purpose of this study is to evaluate whether scheduled telephone intervention with individuals with spinal cord injury (SCI) and their caregivers in the first year following discharge from acute inpatient rehabilitation will reduce rehospitalizations and emergency room visits as well as improve adjustment to SCI.
Cognitive Testing for the Pain Quality Assessment Scale (PQAS)
PainSpinal Cord Injuries1 moreThe purpose of the study is to improve a questionnaire (the Pain Quality Assessment Scale) used for measuring different types of pain people may experience. An improved version of this questionnaire will help researchers better understand the impact of pain treatments on different types of pain through the use of this questionnaire.
A Study of Blood Pressure and Blood Supply to the Brain in Persons With a Spinal Cord Injury.
Orthostatic HypotensionSpinal Cord InjuriesThe purpose of this study is to determine how blood pressure and blood flow are controlled during head-up tilt in a semi-upright position. In this investigation we are studying blood pressure and blood flow to the brain, with and without a medication which lowers blood pressure (Vasotec). We will determine how persons with a spinal cord injury are able to maintain blood flow to the brain (not get dizzy) as they assume a more upright position and their blood pressure decreases.
Functional Changes in the Brain After Tibial Nerve Stimulation: a Pilot Study
Spinal Cord InjuriesBladder1 moreThe lower urinary tract is innervated by the autonomous (sympathetic, parasympathetic) and the somatic nervous system. Afferent information from the lower urinary tract (LUT) (e.g. filling state and volume of the urinary bladder) is conducted via the dorsal roots to the sacral spinal cord and from there to the pontine micturition center (PMC) in the brain stem. The PMC has several connections to other cortical areas. These complex interactions with the cortex enable voluntary control of the LUT and are crucial for urinary continence. The integrity of this neuronal circuit is crucial for an undisturbed function. Deterioration of the nerve fibers due to a systemic neurological disease (e.g. spinal cord injury) can affect LUT function. Neurogenic lower urinary tract dysfunction can lead to urgency, urge incontinence, reduced bladder capacity and secondary deterioration of the upper urinary tract (i.e. kidneys). First-line therapy of neurogenic detrusor overactivity contains antimuscarinic treatment. In case of side effects or remaining detrusor overactivity, nerve stimulation (e.g. sacral neuromodulation and in effect nerve tibialis stimulation) is an accepted therapy option. The precise mechanism of action of these neuro-modulatory procedures is still unknown. Utilizing state-of-the-art neuroimaging techniques, we intend to investigate the functional activation pattern after afferent tibialis nerve stimulation as well as the association with the architecture of the sacral roots. We aime to get a better insight into functional neuromodulation and central nervous processing. The study aim is to evaluate the feasibility in healthy subjects as a pilot study for the application of these method in patients with chronic, incomplete spinal cord injury.