摘要:

Abstract.Four units of thawed deglycerolized RBC were found to exhibit positive direct antiglobulin reactions and could therefore not be cross‐matched. Subsequent screening of 109 randomly processed thawed RBC suspensions from the Missouri‐Illinois Red Cross Blood Center discovered 5.5% with positive antiglobulin reactions, the RBC coats consisting primarily of C4b, with traces of C3d. Special studies were carried out on blood freshly obtained from donors of 3 of the original units plus 1 unit discovered on screening to have strong antiglobulin positivity. Abnormalities were demonstrable in each of the 4 donor samples; one showed a strongly positive direct antiglobulin test, sera from the other 3 donors contained elevated cold agglutinins.In vitrostudies with normal RBC suspended in the 3 cold agglutinin sera (fortified with CPD) demonstrated that during the glycerolization‐freezing‐deglycerolization procedures, the RBC became coated primarily with C4b. It is suggested that donor sera should be screened for elevated cold agglutinins before units are assigned for frozen

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02435.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.A discrepancy between red cell and serum grouping in the ABO system found in routine testing of a healthy blood donor led to recognition of blood group chimerism. The red cells of the propositus grouped as A1and his serum as AB. He was found to have a mixture of 99% A1cells and 1% B cells, and the blood of his twin sister also contained 99% A1and 1% B cells. In each twin the two populations of red cells also differed in Rhesus, MN, and Xg groups. The genotype of the twins was established by the presence of blood group substances in their saliva, the presence or absence of A1Lebsubstance on their red cells, the distribution in their serum of transferases determined by theAandBgenes, and by chromosome studies on lymphocytes.

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02436.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.The rate of reduction of ferrihemoglobin within the erythrocytes and the oxygen affinity of red cells have been measured as a function of time of blood storage. The efficiency of the ferrihemoglobin‐reducing systems decreases with time of storage as measured both in presence of glucose or lactate as substrates. The well‐known increase with ageing of the oxygen affinity (as measured by p1/2) for blood stored in ACD is observed when the p1/2 is determined in Tris‐HCl buffer and parallels the decay of the rate of ferrihemoglobin reduction. However, the increase in oxygen affinity is not observed when the p1/2 is measured in phosphate buffer; this is explained as being due to the replacement of the originally hemoglobin‐bound DPG by phosphate ions entering the r

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02437.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.In an experimental study on the rabbit (80 animals) the haemostasis changes observed during the perfusion of dextrans of various molecular weights, gelatin and stable plasma protein solution (1.5 g/kg/h during 3 h) are compared using the normal animal and the animal with DIC induced by thrombin perfusion (100 U/kg/h during 3 h). With the normal animal, no significant disorders of haemostasis have been observed during perfusion of dextran 40 or SPPS. On the contrary, the perfusions with dextran 75 or gelatin are associated with modifications of platelet activities and of platelet and plasma plasmininhibiting activities similar to those found in thrombophilia states. Perfusion with dextran 200 produces haemostasis changes similar to those found during consumptive coagulopathies. In the animals with DIC, preventive, simultaneous or curative administration of dextrans 40, 75, 200 or gelatin significantly enhances the haemostasis disorders produced by perfusion with thrombin alone, this is opposed to SPPS which has no influence.

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02438.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.Hemagglutination tests with protease‐ and neuraminidase(RDE)‐treated red cells are essential to demonstrate anti‐Pr cold agglutinins, since RDE and proteases inactivate the Pr antigens in contrast to the I/i antigens. RDE treatment of red cells, however, reveals the T antigen which reacts with anti‐T present in anti‐Pr sera. Furthermore, anti‐I, also present in anti‐Pr sera, shows increased reactions with RDE‐ and protease‐treated red cells. Therefore, T‐anti‐T and I‐anti‐I reactions mask the loss of anti‐Pr activity against RDE‐ and protease‐treated red cells when low‐titer anti‐Pr sera are studied. Absorption of anti‐Pr sera with RDE‐treated red cells removes anti‐T and anti‐I, leaving anti‐Pr cold agglutinins which only react with untreated red cells, not with RDE‐ or protease‐treated red cells. Anti‐I contaminating anti‐Pr in warm eluates from untreated red cells or stroma can be also removed by absorption with enzyme‐treated red cells. By eliminating T‐anti‐T interference from sera, it was possible to show that all Pr d

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02439.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.We have tested a serum that reacts strongly with I, P1red cells, weakly with I, P2cells, more weakly with i adult, P1cells, and not at all with I, p cells. Two iso‐antibodies were detected, one being anti‐IP1, which could be isolated in pure form by absorption of the serum with ordinary P2cells. The second antibody, from its reactions with various P1‐negative cells, was presumably anti‐IP, indicating still another interaction product of theIan

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02440.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.Ouchterlony precipitin tests give visual evidence that extracts fromLotus tetragonolobuscontain two different lectins. In addition to the H antigen,Lotusidentifies another antigen, called the L antigen, which is not the A, B, Lea, Sda, I or SC1saliva antigen and has been found in variable strength in secretor and nonsecretor saliva of individuals of all ABO blood groups. The L antigen is part of a cathode migrating glycoprotein. Sugar inhibition studies reveal that the terminal sugars are the same as for the H and Leaantigens, the presumable difference being thatl‐fucose is attached to a different site. The L antigen is absent in the saliva and red cells of the Bombay type, but red cells of all other individuals absorb both lectins fromLotusextrac

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02441.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.IEOP is a simple technique which has been shown to be readily applicable to the detection of IgG antibodies to vaccinia antigen(s) which may be found in the sera of selected donors. It is suggested that the use of IEOP for screening purposes may improve the availability of plasma suitable for preparing anti‐vaccinia immune globuli

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02442.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.Population and family data collected at the Reference Laboratory for the polymorphism of the C3 complement component of man support the view that there is very little, if any, gene frequency variation among Caucasian populations. The observed segregation ratios are in close agreement with the expected ratios. Three ‘new’ variants are reported in 1973/74: ‘F 0.9’, ‘S 1.0’ and ‘S 1.6’. Since rare variants cannot be designated in terms of absolute mobilities, the recommendation of the First International Symposium and Workshop at Bonn in 1972 is renewed to compare ‘new’ rare variants with reference standard sera in the Reference Laboratory. The common C3 polymorphism is also detected in the C3c conversion product as revealed by the Pt typing technique. Rare variants, however, are not reliably determ

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02443.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Abstract.Anti‐ce (f) as a cause of haernolytic disease of the newborn was detected in the serum of a mother having the genotypeCDe/cD

ISSN:0042-9007    

DOI:10.1111/j.1423-0410.1974.tb02444.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY