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 18,428 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We have studied the in vitro interactions versus some blood components of the hemoglobin niosomes whose preparation and physicochemical and oxyphoric properties have been published in a precedent paper (this journal, 1989, No. 7, p. 192). This work was devoted to the research of 1) Agglutination phenomena with ABO blood group substances, plasma, some of its components and three plasma expanders, finally main erythrocytic phenotypes. 2) Adsorption of plasma proteins by immunoelectrophoresis. 3) Effects of niosomes on blood coagulation by thromboelastography. 4) Interactions between niosomes and phagocytes by electron microscopy, chemotactic migration, oxygen consumption, superoxide generation and oxydases function. These assays allow to observe and conclude that: 1) The agglutination phenomena are almost constant except with red blood cells. The agglutinates are dissociable by shaking. The agglutination appears to be nonspecific of a niosome component but is not observed with "classical" DPPC-chol-DCP liposomes. 2) Albumin and eventually transferrin are adsorbed at the surface of niosomes but without destabilizing them. 3) The vesicules show no important effects on coagulation factors, the enhancement of clotting time appearing essentially the consequence of blood dilution. 4) Niosomes phagocytosis is important but all the measurements fail to show any cellular metabolism activation: cell oxygen consumption, oxygenated metabolites generation and oxydases activity are not enhanced whatever the "electric" charge or the niosomes/phagocytes ratio used.
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PMID:[Hemoglobin niosomes. II. In vitro interactions of plasma proteins and phagocytes]. 218 79

The reagent RBC of known blood group is indispensable reagent for detecting antibody in serological identification of ABO blood group. To elevate the accuracy of detection and solve problems for standardization and quality control of prepared reagent RBC, the detection of specificity and affinity of reagent RBC, shaking test, flow cytometry and atomic force microscopy were performed. On the basis of screening and establishing the reagent for quality control, methods for quality inspection and quality control were established. The results indicated that the prepared reagent RBC evaluated in three batches ensured the quality and performance, and decreased the variance between different batches of the products to the utmost. In conclusion, the quality control problems of prepared reagent RBC had been solved and the accuracy of detection for blood types also elevated.
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PMID:[Quality control of indispensable reagent RBC for ABO typing]. 1808 86