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The aim of this study is to compare two strategies of early enteral nutrition in terms of efficacy and complications in mechanically ventilated patients.

This study will examine whether laparoscopic nephrectomy is associated with a higher long-term risk of receiving scrotal surgery in male living kidney donors compared to male nondonors from the general population who have similar baseline health indicators. Both groups will be fo…

The Adventist Health Study-2 is a long-term study, exploring the links between lifestyle, diet, and disease outcomes among Seventh-day Adventists. More than 96,000 church members from the U.S. and Canada are participating in the current study, AHS-2, conducted by researchers at t…

This study is designed to establish a population of patients with Lyme disease for evaluation, treatment and follow-up to learn more about the infection. Patients with active Lyme disease may be eligible for this study. Participants will have a medical history and physical exam…

Background: -Research in NCI's Radiation Oncology Branch depends on the availability of blood and urine samples from patients receiving radiation therapy. Objectives: -To explore the effects of radiation therapy on gene expression in white blood cells, to measure radiation dam…

This study has four objectives: 1) to provide investigators the opportunity to study bone specimens from patients with various skeletal diseases; 2) to treat patients with skeletal diseases at the NIH; 3) to expose NIH trainees to certain skeletal diseases; and 4) to gain more kn…

The aim of the study is to observe the ventilatory and cardiac function (included the pulmonary arterial pressure) during an intermittent work exercise test with high density work load.

Objectives: To contribute new and prospective data to our existing database library for patients with MEN1 and MEN2 at The University of Texas M.D. Anderson Cancer Center.

RATIONALE: Collecting and storing samples of tumor tissue from patients with breast cancer to study in the laboratory may help doctors learn more about cancer. PURPOSE: This phase I study is collecting tissue samples for future research from women undergoing surgery for breast c…

To provide the IRB approved mechanism for the prospective collection and analysis on participants who are undergoing either an autologous or allogeneic hematopoietic stem cell transplant for a disease in which a research question is not being addressed.

The purpose of this protocol is to allow for the careful screening of patients and healthy volunteers for participation in research protocols in the Experimental Therapeutics and Pathophysiology Lab (ETPB) at the National Institute of Mental Health (NIMH) and for the collection o…

Aim of this study is to reflect on the changing trends in absolute numbers, surgical techniques and indications of corneal transplantations being performed in Germany. The Section Cornea of the German Ophthalmological Society provides interim-assessments on a regular basis about…

BACKGROUND: * A number of important scientific advances can be made through the study of blood, bone marrow, tumor, or other tissue samples from patients with HIV infection, infection with Kaposi s sarcoma associated herpesvirus (KSHV), infection with other oncogenic viruses, or…

Stage migration occurs when patients sound to have better survival or increased incidence rates at the early stage at diagnosis due to early detection of the disease. As carcinoid tumors are rare and there are no data supporting stage migration, the aim of this study was to perfo…

The purpose of this investigation is to develop improved magnetic resonance imaging (MRI) techniques and hardware for studying brain function. MRI is a diagnostic tool that provides information about brain chemistry and physiology. This study will evaluate new MRI methods for mon…

Doctors at Memorial Sloan Kettering Cancer Center and at other institutions study normal and cancer cells. To study these cells we need to have human tissue, body fluids, and blood. The patient will be having or have had a procedure to remove tissue. The doctors would like to use…

The purpose of this study is to use brain imaging technology to compare differences in brain structure, chemistry, and functioning in individuals with brain and mental disorders compared to healthy volunteers. Schizophrenia is a brain disorder that results from subtle changes an…

RATIONALE: Collecting and storing samples of blood, urine, tissue and data from patients with amyloid diseases to test in the laboratory may help the study of this disease in the future. PURPOSE: This research study is collecting samples from patients with amyloid diseases

The purpose of this study is to collect human Chronic Lymphocytic Leukemia tissue samples and medical information, in order to find out more about the causes and biology of chronic lymphocytic leukemia.

Background: The National Cancer Institute Surgery Branch (NCI-SB) has developed experimental therapies that involve taking white blood cells from patients' tumor or from their blood, growing them in the laboratory in large numbers, and then giving the cells back to the patient. …