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Discover 23,284 clinical trials near Maryland. Find research studies in your area.
Showing 15701-15720 of 23,284 trials
NCT00935623
The purpose of this study is to demonstrate that volunteers can be safely and reproducibly infected with Plasmodium vivax (P. vivax) by the bites of experimentally infected Anopheles dirus (An. dirus) mosquitoes carrying P. vivax sporozoites in their salivary glands.
NCT00132249
The Vietnam Head Injury Study (VHIS)-Phase III is a prospective, long-term follow-up study of head-injured Vietnam veterans. The purpose of this research study is to determine the long-term consequences, if any, of head injury.
NCT01441037
Background: \- Some people have bone marrow and lung disorders that are caused by genetic problems. These problems often involve damage to the ends of the chromosomes that pass down genes. One of these disorders is aplastic anemia. This is a disorder in which the bone marrow does not make enough blood cells. Currently, doctors use a male hormone-based drug called Danazol to improve bone marrow function and treat aplastic anemia. More information is needed on whether Danazol can help repair the damaged chromosomes that cause aplastic anemia and similar disorders that cause low blood cell counts or lung problems. Objectives: \- To study the safety and effectiveness of Danazol for bone marrow and lung disorders caused by damaged genes. Eligibility: \- Individuals at least 2 years of age who have low blood cell counts or lung fibrosis caused by damaged genes. Design: * Participants will be screened with a physical exam and medical history. Then they will have blood and urine tests, imaging studies, and a lung function test. They will also take a 6-minute walking test and have a bone marrow biopsy. * Participants will receive Danazol to take twice a day for the duration of the study. * Participants will have regular study visits at 6, 12, and 24 months, with blood tests, imaging studies, a lung function test, and a 6-minute walking test. A bone marrow sample will be collected at the 12-month visit. * Participants will remain on the study for up to 2 years. Researchers will follow up with them for 2 years after the end of the study.