A “cold” platelet agglutinin is described reacts only at temperatures below 34#{176}C. which is present in plasma and serum, It agglutinates homologous and autois greater than 100,000 in molecular logous platelets but appears to have no weight, appears to be a protein of the imeffect on in vivo platelet function. It is munoglobulin type, is adsorbed by plateseen in patients with systemic diseas...

Cold agglutinins are predominately immunoglobulin M autoantibodies that react at cold temperatures with surface antigens on the red blood cell. This can lead to hemagglutination at low temperatures, followed by complement fixation and subsequent hemolysis on rewarming. Development of hemagglutination or hemolysis in patients with cold agglutinins is a risk of cardiac surgery under hypothermia. ...

A male, 47, developed chronic hemolytic anemia in association with hi9h titers of cold agglutinins in 1 966. His symptpm of the cold agglutinin syndrome began in 1 951 with cyanosis of the extremities nd face after exposure to cold. In 1 956, hemoglobinuna was first noted after chilling. In 1 962, the cold agglutinin titer was 1 : 1 6,000, and his red cells were coated with complement globulins...

Eleven haemophiliac boys infected with HIV were screened for irregular red cell antibodies and were compared with nine haemophiliac boys who did not have antibodies to HIV. Seven (64%) of the children who had antibodies to HIV also had cold agglutinins, mostly of anti-I specificity, compared with one (11%) of those who did not have antibodies to HIV. The children with antibodies to HIV and cold...

The combination of anemia in malarial infestations ranges from nutritional deficiency to marrow suppression. An immune hemolytic anemia in Plasmodium falciparum malaria is also a part of this wide-ranging spectrum. But the co-existence of cold agglutinins in a Plasmodium falciparum malaria has only sporadically been reported in literature. We present a case of a patient with falciparum malaria ...

From the Department of Pathology, University of Michigan Medical Center, Ann Arbor, Michigan. Address reprint requests to: W. John Judd, FIBMS, MIBiol, Professor of Immunohematology, Department of Pathology, UH-2G332, University of Michigan Medical Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-0054; e-mail: [email protected]. Received for publication November 2, 2005; accepted No...