With this research study, we want to learn if methylphenidate (Ritalin® and others) helps people with Alzheimer's disease and apathy (lack of interest or concern for things that others find moving or exciting).

The primary objective of Enroll-HD is to develop a comprehensive repository of prospective and systematically collected clinical research data (demography, clinical features, family history, genetic characteristics) and biological specimens (blood) from individuals with manifest HD, unaffected individuals known to carry the HD mutation or at risk of carrying the HD mutation, and control research participants (e.g., spouses, siblings or offspring of HD mutation carriers known not to carry the HD mutation). Enroll-HD is conceived as a broad-based and long-term project to maximize the efficiencies of non-clinical research and participation in clinical research while ensuring privacy and protections for consenting research participants.

Reflexes are important parts of our movements. When reflexes are not working well, movements are clumsy or even impossible. Researchers have found that people can learn to increase or decrease a reflex response with training. Recently, we have found that rats with spinal cord injuries can walk better after they are trained to change a spinal cord reflex. Thus, learning to change a reflex response may help people recover after a nervous system injury. We are currently studying effects of spinal cord reflex training (e.g., a knee jerk reflex) in people in early adulthood. We hope that the results of this study will help us develop spinal reflex training as a new treatment to help people in early adulthood recover better after spinal cord injury or other damage to the nervous system.

Individuals are being asked to volunteer for a research study. Research studies are voluntary and include only those who choose to take part. The purpose of this research study is to compile a repository of participants who are willing to participate in rehabilitation research studies.

Participants will complete a datasheet that includes contact information and basic medical conditions. Once the datasheet is complete, participants will then await contact from VA Investigators. The study will continue until the participant decides they no longer wish to participate or becomes deceased.

There will be no direct benefit to participants from taking part in this study. The risk associated with this study is a potential loss of confidentiality.

Spinal reflexes take important part in our movement. After spinal cord injury (SCI), reflexes often change. For many years, researchers and doctors have assumed that abnormally acting spinal reflexes lead to movement problems, without clear scientific evidence. For example, in people who suffer spasticity, a common problem after SCI, walking is disturbed, presumably because stretch reflexes (e.g., knee jerk reflex) and some other reflexes are not working well. Yet, which reflex is causing a problem in what way has not been well understood. Such understanding is very important in developing and applying effective therapies for improving gait recovery after SCI. Therefore, in this project, we are studying spinal stretch reflexes and other reflexes during walking, to understand how these reflexes contribute to spastic gait problems in people with chronic incomplete SCI. Successful completion of this project will result in better understanding of spastic gait problems, which in turn, will help us develop more effective therapy application and improve the quality of life in people after SCI.

Over many years, we have learnt that the brain's connections with the spinal cord change in response to injury or training. Because brain-spinal cord (i.e., corticospinal) pathways are very important in movement control, restoring function of these pathways could help to restore useful movement after spinal cord injury (SCI). In this project, we hypothesize that operant conditioning training of the muscle response to non-invasive transcranial magnetic stimulation can strengthen the functional connectivity of corticospinal pathways and thereby alleviate movement problems in people with chronic incomplete SCI. This study will require about 38 visits over the first 3 months, and another 4 visits over an additional 3 months. Each visit will take about an hour.

Reflexes are important parts of our movements. When reflexes are not working well, movements are clumsy or even impossible. After spinal cord injury, reflex responses may change. Researchers have found that people can learn to increase or decrease a reflex response with training. Recently, we have found that rats with spinal cord injuries can walk better after they are trained to change a spinal reflex. Thus, learning to change a reflex response may help people recover after a nervous system injury. In this study, we aim to examine whether learning to change a spinal reflex through operant conditioning training can improve movement function recovery after spinal cord injury.

The purpose of the MUSC Pulmonary Biorepository is to collect and store samples linked to medical and other information from individuals with pulmonary disease as well as healthy controls.

In combination with the clinical data and other approved research studies (that may recruit for and/or utilize samples of the biorepository) this sample repository will provide for uniform, longitudinal, complete and accurate data that can be organized and clinically correlated at the time of sample donation, with longitudinal testing possible as part of future study. Samples will be linked to each participant's unique ID, though will be deidentified and coded for use in future research and subsequent publications with pulmonary disease and control patients.

Adult and Pediatric patients with glomerular disease:
Patients of all ages are needed to participate in a research study to investigate glomerular disease and create a worldwide database to help in the research and future treatment of this disease. To join this study, you must have a type of glomerular disease, have had a first kidney biopsy within the last 5 years, not be on dialysis, or not have had a kidney transplant.

The study is projected to last 4 years, and all study procedures will be done at regular clinic visits (between 1 and 3 yearly). Study procedures include filling out questionnaires and a blood draw at each visit.

Compensation is available for study participation.

The current investigation uses a brain-based technique, transcranial magnetic stimulation (TMS), which has helped to treat depression, to try to stimulate those brain regions understood to be essential to emotional experience and impaired in PTSD. In summary, the aim is to enhance emotion engagement and regulation and possibly uncover new brain-based interventions that could help ready the brain so an individual with PTSD could then fully engage and thus optimize emotion-focused psychotherapy.