Alexander Dvilansky

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OBJECTIVE Burst-forming unit erythroid and colony-forming unit erythroid growth in vitro is lower in studies of continuous ambulatory peritoneal dialysis patients than healthy controls. Burst-forming unit erythroid growth was potentiated by addition of 1alpha,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)] and normalized by erythropoietin (Epo) therapy,(More)
Echis colorata bites cause impairment of platelet aggregation and hemostatic disorders. The mechanism by which the snake venom inhibits platelet aggregation was studied. Upon fractionation, aggregation impairment activity and L-amino acid oxidase activity were similarly separated from the crude venom, unlike other venom enzymes. Preparations of L-amino acid(More)
A procedure which may distinguish between old and new CPD blood units in liquid state is described. It is based on the observation of increased tendency to reversible agglomeration in old erythrocytes in liquid preservation. Erythrocytes clump together when they are mixed with low ionic strength solutions in pH range of 5.2 to 6.5. We found that(More)
Red blood cells in iron deficiency anemia (IDA) have a decreased activity of essential antioxidant enzymes. The present study examined the effect of in vitro exposure to oxidative agents in IDA cells and their recovery capacity. Red cells of 26 IDA patients and 10 healthy subjects were examined. Cells of IDA patients had higher levels of reduced glutathione(More)
The MTT-based assay relies upon the cellular reduction of tetrazolium salts to their intensely colored formazans. The test is easy to perform in hematological malignancies and is adaptable for high throughput of samples, although there are some minor limitations in its application resulting from metabolic interference. This class of assays are highly(More)
A retrospective study of 42 patients bitten by Echis colorata in the last 26 years is reported. Twenty-eight patients received and 14 patients did not receive specific antivenin. The clinical findings, laboratory studies, and course of hospitalization revealed hemostatic disturbances in most of the patients. One of the untreated patients died in the period(More)
Modification of blood group in the course of malignant haemopathy in an aged patients is described. To our knowledge, this is the first published case describing the appearance of autoantibody due to anti-D in a patient with Rh typing DCcee who has myelodysplastic syndrome in transition to acute leukaemia. We present a patient who developed acquired(More)
Beta-thromboglobulin (beta TG) plasma levels and platelet aggregation index (PAI) were determined in 14 transient ischaemic attack (TIA) patients, before and two weeks after starting therapy with aspirin and dipyridamole. Thirty healthy men were the control group. Decrement in beta TG plasma levels (without statistical significance) was found in treated(More)