View clinical trials related to Hemolysis.
Filter by:It is well established that hemolytic diseases predispose patients to the development of pigment gallstones. Gallstones are noted in at least 5% of children under the age of 10 years, increasing to 40-50% in the second to fifth decades. The co-inheritance of Gilbert's syndrome increases the risk of cholelithiasis four to five-fold. In patients with chronic hemolysis, total bile lipid concentration is decreased and the total bilirubin to total lipid ratio is increased. This suggests that the conjugating capacity of hepatocytes is surpassed by the excessive amount of bilirubin resulting from hemolysis. Increased bilirubin monoconjugate and unconjugated bilirubin can precipitate in bile and form complexes with inorganic ions, mostly calcium, and develop into stones. Patients with hemolytic disorders can also develop biliary sludge, a suspension of precipitated particulate matter in bile dispersed in a viscous, mucin-rich liquid phase . The chemical composition of the precipitates correlates well with the composition of the associated stone and sludge often stands as a harbinger of future stone development. There is strong data suggesting a benefit in treating cholelithiasis with UDCA and also in preventing gallstone development in various high risk scenarios. There are several proposed mechanisms for the positive effect of UDCA in primary prevention of pigment stones. Mucoglycoproteins are present in significant amounts in black pigment stones and contribute to the matrix of gallstones. UDCA suppresses the secretion of protein and decreases the levels of various proteins in bile . It has also been suggested that increased colonic bile salt may solubilize unconjugated bilirubin and may prevent calcium complexing. There is no published data at present on the role of UDCA in prevention and treatment of cholelithiasis in hemolytic diseases. The investigators hypothesise that UDCA can be of benefit to patients with hemolytic disorders in the primary prevention of pigment stones, possible resolution of biliary sludge and existent stones, and reduction of symptomatic episodes of cholelithiasis.
This study evaluates the effect of CCX168, a C5aR Antagonist, Oral Administration on Ex Vivo Thrombus Formation and Disease Activity in ten patients with diagnosis of Atypical Hemolytic Uremic Syndrome with or without genetic abnormalities in the complement system or thrombomodulin, on stable chronic extracorporeal or peritoneal dialysis therapy since at least 6 months.
There is growing but limited information on the long term clinical status of aHUS patients who have previously received or are continuing to receive treatment with eculizumab. This study is designed to collect clinical data that will provide insight into the long-term outcomes of patients with aHUS.
This study will examine blood for factors that may cause or prevent diseases involving iron or red blood cells. Iron is an important nutrient for human health that is needed to produce red blood cells. Red blood cells carry oxygen to body tissues. A better understanding of iron and red blood cells may help lead to better treatment of several diseases including anemia. Patients of all ages with red cell abnormalities in the following categories may be eligible for this study: - Diseases with deficiency, overload or maldistribution of iron - Known red blood cell diseases, such as anemias and hemoglobinopathies - Red blood cell diseases of unknown cause, such as hemolysis of unknown cause - Red blood cell abnormalities with no overt clinical disease, such as hereditary persistence of fetal hemoglobin Participants undergo the following procedures: - Medical history - Physical examination - Standard medical tests related to the individual's iron or red blood cell condition Blood draw for the following purposes: - Testing for syphilis and for the hepatitis B and C, HIV, and HTLV-1viruses, and for a pregnancy test for women who can become pregnant - Research purposes. This blood is analyzed for genes, proteins, sugars, and fat molecules.
OBJECTIVES: I. Determine the effect of SYNSORB Pk therapy on mortality and frequency of severe extrarenal complications observed in children with acute stage E. coli-associated hemolytic uremic syndrome. II. Determine the effect of SYNSORB Pk therapy on the need for the duration of dialysis in these patients. III. Determine the effect of SYNSORB Pk therapy on the recovery of renal function and resolution of urinary abnormalities in these patients.