[Genetic polymorphism of erythrocytic enzymes in the Rennes area. Frequency of adenylate kinase, esterase D, adenosine deaminase, 6-phosphogluconate dehydrogenase, glutamate-pyruvate transaminase and glyoxyalase I phenotypes].

Blood donors from the Centre Régional de Transfusion Sanguine de Rennes were investigated for the phenotypic distribution of seven enzymatic systems : adenylate kinase, adenosine deaminase, esterase D, 6-phosphogluconate dehydrogenase, glutamate-pyruvate transaminase, phosphoglucomutase, and glyoxalase I. Two unusual phenotypes were observed: phenotype 6-1 for adenosine deaminase and phenotype 3-1 for transaminase GPT. For five of these enzymes, the statistical analysis points out significant differences in one or several of the European populations described in the literature.

[Quantitation of myelofibrosis in blood diseases by electronic image analysis (author's transl)].

Normal and pathologic reticulin networks colored black by silver nitrate can be automatically quantitated by electronic image analysis. By using this technique, different parameters can be obtained, such as the average density, the surface of network meshes, the thickness of the fibers, the complexity of the reticulum, and the heterogeneity of the myelofibrosis distribution. All of these parameters were obtained in 83 osteomedullar biopsies of blood diseases (primary splenomegaly, chronic myeloid leukemia, polycythermia vera, acute leukemia, and aplastic anemia).