View clinical trials related to Anemia, Sickle Cell.
Filter by:This study will collect representative blood samples from healthy children and adults and from children and adults who have unique red blood cell features that are related to sickle cell disease. Sickle cell disease is a blood disease that limits the ability of red blood cells to carry oxygen throughout the body. The purpose of the study is to collect a variety of blood samples that may then be used to investigate advances and potential new drug treatments for sickle cell disease. Volunteers must be at least 18 years of old. Samples will be taken both from healthy volunteers and from volunteers who have unique red blood cell features that are related to sickle cell disease. Candidates will be screened with a medical history. During the study, participants will undergo a one- to two-hour outpatient procedure at the National Institutes of Health Clinical Center. Once researchers have explained the study and obtained the participant s consent, participants will donate 8 cc (approximately 2 teaspoons) of blood. Because repeat testing helps researchers validate study findings, participants who have the unique red blood cell features mentioned above may also be asked if they are willing to return and donate another 2 cc to 8 cc of blood for additional studies. The amount of blood drawn will not exceed 50 ml with any eight-week period for adults or 7 cc within any six-week period for children....
This research is being done to compare the effect of tadalafil with placebo (an inactive substance that looks like the study drug, but should have no effect) on the frequency of recurrent priapism (prolonged erection, unassociated with sexual interest or desire) and the nature of sexual experiences in male patients with sickle cell disease.
Sickle cell disease (SCD), also known as sickle cell anemia, is an inherited blood disease that can cause intense pain episodes. Hemoglobin SCD (HbSC) is a form of SCD that is characterized by dense red blood cells. The purpose of this study is to evaluate the safety and effectiveness of hydroxyurea and magnesium pidolate, alone and combined, at reducing red blood cell density and the frequency of pain episodes in people with HbSC.
People with sickle cell disease (SCD) may develop acute chest syndrome (ACS), which is a common and serious lung condition that usually requires hospitalization. Dexamethasone is a medication that may decrease hospitalization time for people with ACS, but it may also bring about new sickle cell pain. This study will evaluate the effectiveness of a dexamethasone regimen that includes a gradual dose reduction at decreasing hospitalization and recovery time in people with SCD and ACS.
Sickle cell disease (SCD), also known as sickle cell anemia, is an inherited blood disease that can cause intense pain episodes. The purpose of this study is to gather medical information from children and adults with SCD and establish a database so that researchers can contact people to participate in future SCD research studies.
Sickle cell disease (SCD), also known as sickle cell anemia, is an inherited blood disease that can cause intense pain episodes and may lead to organ failure. Preliminary studies have shown that adults with SCD may have brain abnormalities that contribute to problems with cognitive functioning, including attention and memory difficulties. This study will use brain magnetic resonance imaging (MRI) and neuropsychological testing to examine the differences in cognitive functioning in adults with SCD and adults without SCD. 212 subjects participated in this cross-sectional study consisting of screening questionnaires, a neuropsychological testing battery, and MRI testing. Enrollment into this study ended in May 2008.
Sickle cell disease (SCD), also known as sickle cell anemia, is an inherited blood disease that can cause intense pain episodes. The purpose of this study is to collect, test, and archive blood and DNA samples from children and adults with SCD to study the role that genes play in SCD. Blood and DNA samples will be stored for use in future SCD studies.
The purpose of this study is to asses prospectively the safety and efficacy of hydroxyurea therapy in children with Sickle cell Anemia between ages 18 months and 5 years, with special emphasis on the ability of hydroxyurea to prevent or reverse chronic organ damage.
To develop and validate a non-invasive, in vivo, phenotyping method for CYP2D6 using the non-injurious neuroselective electrical stimulation technique: pain perception threshold/pain tolerance threshold (PPT/PTT) in children and adolescents with sickle cell disease.
Sickle cell disease (SCD), also known as sickle cell anemia, is an inherited genetic disease that can cause intense pain episodes. This study will evaluate the effectiveness of the nutritional supplement arginine at improving blood cell function and disease symptoms in people with SCD.