View clinical trials related to Anemia, Sickle Cell.
Filter by:Sickle cell disease is the most common genetic disease in the world. It results in the synthesis of an abnormal hemoglobin (HbS) which, in its deoxygenated form, polymerizes and causes structural changes in red blood cells (RBCs). They become more rigid and less deformable. The fragility of sickle-cell RBCs leads to their massive destruction, leading to chronic anemia (i.e. low hemoglobin in the blood) and to low tissue oxygenation. More rigid and less deformable, sickle-shaped RBCs tend to obstruct microvessels, leading to particularly painful vaso-occlusive crisis (VOC), which can cause organ failure (spleen, kidneys, brain, lungs, heart, liver, bone ...) and patient's lifethreatning. A preliminary work on red blood cells of sickle cell patients showed alteration of a parameter measuring the overall deformability of RBCs by assessing the nature of their movement in a shear flow. This parameter is altered sickle cell patients at basal state compared to a population of healthy individuals. This alteration is increased when sickle cell patients are in crisis. The main objective of this project is to study the evolution of this parameter in sickle cell patients according to their health status (basal state vs vaso-occlusive crisis). The investigators hypothesize that the alteration of the RBC deformability parameter is significant before symptoms of vaso-occlusive crisis (several hours to several days). The main objective is a weekly analysis of the evolution of the parameter in 30 sickle cell patients (SS or SB°) in the basal state and daily in at least 6 patients at the beginning, during and just after a vaso-occlusive crisis. The comparison between the parameter measured in a subject in the basal state and in the same subject in crisis will be performed. The criteria for the presence of a vaso-occlusive crisis were: the appearance of a attacks of pain affecting at least two territories +/- fever> 38.3 +/- dyspnea and / or sputum. The investigators will differentiate the moderate VOC managed at home with low-level analgesics and VOC requiring hospitalization. The number of days of hospitalization, the occurrence of thrombotic complications, the degree of anemia and hemolysis will be noted. The measurement of the parameter will be performed on a capillary sampling of 40 microliters performed at the fingertip, weekly outside crises and daily when a crisis occurs.
Sickle cell disease (SCD) necessitates a paediatric treatment plan that considers the influence of psychological, family and intercultural factors. At the Louis-Mourier Hospital (APHP) in Colombes, France, a paediatric-psychological partnership where a clinical psychologist accompanies the paediatrician at programmed consultations was introduced. The psychological repercussions of SCD were assessed among children and their parents treated in Colombes and in two other paediatric units without a paediatric-psychological partnership.
Background: Sickle cell disease is a common inherited blood disorder. Kidney disease is a major cause of problems in people with sickle cell disease. In order to identify kidney problems early and stop the progression of kidney disease, doctors need the most accurate tests to check kidney function. Researchers hope to understand more about how to test for kidney disease in people with sickle cell disease. Objective: To determine which of two different lab tests is the best to measure kidney function in adults with sickle cell disease. Eligibility: People 18 years and older who have sickle cell disease Design: Participants will be screened with a medical history and blood tests. Participants will have up to 3 visits. Participants will collect their urine in a special container over 24 hours. At the first visit, participants will have blood tests. They will bring their container of urine to the visit. They will have an iothalamate test. For the test, they will get a catheter: a small tube will be inserted into a vein. A special contract agent will be injected into the vein. Blood will be collected over the next 4 hours to test kidney function. Participants will return the next day for a second visit. They will have blood tests. They will have an MRI. For the MRI, they will like on a table that slides into a machine that takes pictures of the kidneys. They may have the MRI in a third visit. ...
Sickle cell disease is very common in Nigeria. Early diagnosis is important to prevent or reduce serious complications from the disease and to enable children stay healthy. To this end, the investigators would like to test a new, simple and quick device called the HemeChip to determine if it can detect whether or not someone has sickle cell disease. The investigators will compare the results obtained with the HemeChip with a standard method of diagnosing sickle cell disease known as Isoelectric focusing (IEF) or High Performance Liquid Chromatography (HPLC).If the investigators show that the new device can differentiate between children who have sickle cell disease and those who don't as successfully as the IEF or HPLC, they estimate a sharp increase in the use of this device in many countries especially in Africa due to its lower cost
The goal of the study is to evaluate the efficacy and safety of crizanlizumab in SCD patients with priapism.
This is a single center, open label Phase 1 clinical trial in normal adult subjects to assess safety, tolerability, pharmacokinetics, and pharmacodynamics of HBI-002, an orally administered liquid containing carbon monoxide (CO), with single ascending doses (SAD), followed by multiple dose with doses daily for 7 days.
Many patients with Sickle Cell Disease (SCD) may develop Acute Chest Syndrome (ACS). ACS is usually caused by a Lower respiratory tract infection (LRTI) which may be caused by either a bacterium or a virus. Antibiotics are usually used for 7 to 10 days with no microbiological workup. The hypothesis of the study is that the identification of the microorganisms might lead to a reduction of antibiotics exposure and a better care of the patients. We speculate that an early pathogen-directed strategy (respiratory broad panel multiplex PCR and early antibiotics interruption based on the PCT values decrease) might reduce the antibiotics exposure in SCD patients with ACS who are hospitalized and for whom an antibiotic treatment is indicated, as compared with usual care
As part of routine care for SCD, some people are found to have low oxygen levels (≤ 88%) while sleeping, at rest, or with exercise. Testing is done with a small portable device positioned on the finger that measures oxygen levels during sleep, at rest, or following exercise. The investigators start oxygen treatment for people with low levels of oxygen. As a part of this study, the investigators will find out if any changes in cell "stickiness" occur with low oxygen levels (at rest, at night, or with exertion) and if cells become "less sticky" with oxygen treatment. Study subjects will be seen before testing and 2 months after testing. In some cases (people with low oxygen levels during testing), study subjects will have been prescribed oxygen, and the investigators will test the effects of that treatment on the stickiness of red cells.
This study objectives to assess the role of endothelial monocyte-activating polypeptide II (EMAP II) as a marker of endothelial dysfunction and disturbed angiogenesis in sickle cell disease and to identify its correlation With the oxidative status.
This study evaluates the safety and feasibility of using high dose topical capsaicin patches for the treatment of neuropathic pain in pediatric patients with sickle cell disease, as well as the feasibility of using a number of tests for the evaluation and monitoring of neuropathic pain. The hypothesis, based on evidence obtained from studies in adults with neuropathic pain related to other diseases as well as a single previously published study of capsaicin in pediatric patients, is that capsaicin will be well tolerated in this population. Additionally, it is hypothesized that it is feasible to monitor changes in neuropathic pain via the testing listed below.