HLA antigens and factor VIII antibody in classic hemophilia. European study group of factor VIII antibody.

Possible interrelations between the immune response factor VIII and the major histocompatibility system were investigated in 57 multi-transfused hemophilic brothers belonging to 26 families. Linkage appears very unlikely although formal proof of independence cannot be offered. The HLA system, therefore, does not provide markers predictive for the development of antibodies to factor VIII in severe hemophilia A.

[Coagulation of the hemolymph in Macropipus puber (L)., Crustacea, Decapoda. Electrophoretic demonstration of a plasma component intervening in hemostasis].

Electrophoretical and immuno-electrophoretical analysis of plasma, serum and some plasmatic extracts of Macropipus puber (L). have evidenced the presence in the plasma of a component absent in the serum. This component which disappears from the plasmatic extracts after their coagulation must therefore plays a role in the clotting processes.

[Hemolymph coagulation in Macropipus puber (L.) Crustacea Decapoda. Respective roles of hemolymph and plasma].

The process of coagulation of the hemolymph in Macropipus puber (L.) Crustacea Decapod depends on one or several plasmatic factors and on a thermo-labile cellular factor which does not seem to be specific. The existence of these factors has been demonstrated.

Possible linkage between the major histocompatibility complex and the immune response to factor VIII in classic haemophilia.

The pattern of HLA segregation was analyzed in 10 sibships of haemophilia A patients, each of which included 1 or 2 haemophilic brothers with an antibody to factor VIII. The observed HLA distribution is suggestive of a linkage between the major histocompatibility complex and a gene responsible for immune response to isologous factor VIII.

[Adsorption properties of Beidellite (author's transl)].

The beidellite is both an activator and an adsorbing agent for certain clotting factors: at low concentration (1 p. 1 000), factors XII and VII of human plasma are activated. At a concentration of 10 p.