نتایج جستجو برای: stability hemolysis
تعداد نتایج: 312943 فیلتر نتایج به سال:
Donath and Landsteiner demonstrated that the abnormal factor responsible for hemolysis in paroxysmal cold hemoglobinuria (PCH) is in the patient's serum (1). Inactivation of the serum by heat prevented hemolysis, but the addition of fresh serum restored the activity. The hemolytic reaction in vitro was shown to occur in two phases: 1) a cold phase during which antibody (hemolysin) is adsorbed o...
BACKGROUND Blood sampling by finger puncture is convenient, but the need for centrifugation and the problem of hemolysis remain, as does instability when samples must be shipped for analysis. We aimed to develop a blood-sampling device that provided high yields of serum with limited hemolysis and enabled preservation of serum components for at least 7 days at room temperature. METHODS For sep...
ABSTRACT Glucose -6-phosphate dehydrogenase (G6PD)deficiency is the most common inheritory enzyme defect in human. With this deficiency, red blood cells are susceptible to hemolysis induced by oxidants .Drage and foods (esp. fava beans) are the most common oxidants that cause acute hemolysis (Favism). Vitamin E.that is an potent antioxidant,was studied in chronic hemolysis of these patients. ...
8-alkylberberine homologues (Ber-C8-n, where n indicates carbon atom number of gaseous normal alkyl at 8 position, n = 0, 2, 4, 6, 8, 10, 12, or 16) were synthesized and their effects on the hemolysis of rabbit erythrocyte, the fluidity of membrane and the fluorescence of membrane protein were investigated by fluorescence analysis technique. Ber-C8-n with mediate length alkyl (4 < n < 10) exhib...
BACKGROUND Transfusion of blood at the limits of approved storage time is associated with lower red blood cell (RBC) post-transfusion recovery and hemolysis, which increases plasma cell-free hemoglobin and iron, proposed to induce endothelial dysfunction and impair host defense. There is noted variability among donors in the intrinsic rate of storage changes and RBC post-transfusion recovery, y...
Titanium (Ti) is one of the most widely used biomaterials for manufacturing dental implants. The implant surface properties strongly influence osseointegration. The aim of the present study was to in vitro investigate the characteristics of Ti dental implants in terms of mutagenicity, hemocompatibility, biocompatibility, osteoinductivity and biological safety. The Ames test was used to test the...
when the infant was 18 months old, and again this sample showed evidence of significant hemolysis, with decreased hemoglobin (60 g/L), hematocrit (0.18), and erythrocyte count (2.4 10). The normochromic blood film showed pencil cells, some elliptocytes, and erythrocyte fragments. Mass spectrometry confirmed a complete switch to an adult pattern of hemoglobin synthesis, with no significant amoun...
Hemolysis in serum specimens is commonplace. This study examines the effect of hemolysis on results of selected chemical assays. Hemolysis was simulated by adding hemolysate to serum to give hemoglobin concentrations of 90 to 2800 mg/liter and a rating by technologists of 0 to 4 + hemolyzed. The effect of hemolysis on values for some serum constituents, particularly acid phosphatase and creatin...
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