Excessive apoptosis of bone marrow erythroblasts in a patient with autoimmune haemolytic anaemia with reticulocytopenia. 2000

A A Van De Loosdrecht, and D W Hendriks, and N R Blom, and J W Smit, and J T De Wolf, and E Vellenga
Department of Hematology, Academisch Ziekenhuis Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands. a.van.de.loosdrecht@int.azg.nl

We report a patient with autoimmune haemolytic anaemia (AIHA) with reticulocytopenia, who showed excessive apoptosis of erythroblasts. Ultrastructural analysis of bone marrow cells showed that 50% of erythroblasts had characteristic features of apoptosis, which was confirmed by staining with Annexin-V. In addition, in contrast to normal erythroblasts, Ig staining of the entire erythroblast population could be shown. These data show that apoptosis may contribute to the mechanism of reticulocytopenia in AIHA.

UI MeSH Term Description Entries
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D012156 Reticulocytes Immature ERYTHROCYTES. In humans, these are ERYTHROID CELLS that have just undergone extrusion of their CELL NUCLEUS. They still contain some organelles that gradually decrease in number as the cells mature. RIBOSOMES are last to disappear. Certain staining techniques cause components of the ribosomes to precipitate into characteristic "reticulum" (not the same as the ENDOPLASMIC RETICULUM), hence the name reticulocytes. Reticulocyte
D004900 Erythroblasts Immature, nucleated ERYTHROCYTES occupying the stage of ERYTHROPOIESIS that follows formation of ERYTHROID PRECURSOR CELLS and precedes formation of RETICULOCYTES. The normal series is called normoblasts. Cells called MEGALOBLASTS are a pathologic series of erythroblasts. Erythrocytes, Nucleated,Normoblasts,Proerythroblasts,Pronormoblasts,Erythroblast,Erythrocyte, Nucleated,Normoblast,Nucleated Erythrocyte,Nucleated Erythrocytes,Proerythroblast,Pronormoblast
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000744 Anemia, Hemolytic, Autoimmune Acquired hemolytic anemia due to the presence of AUTOANTIBODIES which agglutinate or lyse the patient's own RED BLOOD CELLS. Anemia, Hemolytic, Idiopathic Acquired,Autoimmune Haemolytic Anaemia,Autoimmune Hemolytic Anemia,Cold Agglutinin Disease,Hemolytic Anemia, Autoimmune,Acquired Autoimmune Hemolytic Anemia,Anemia, Hemolytic, Cold Antibody,Cold Antibody Disease,Cold Antibody Hemolytic Anemia,Idiopathic Autoimmune Hemolytic Anemia,Agglutinin Disease, Cold,Anaemia, Autoimmune Haemolytic,Anemia, Autoimmune Hemolytic,Autoimmune Haemolytic Anaemias,Autoimmune Hemolytic Anemias,Cold Agglutinin Diseases,Cold Antibody Diseases,Haemolytic Anaemia, Autoimmune
D013921 Thrombocytopenia A subnormal level of BLOOD PLATELETS. Thrombopenia,Thrombocytopenias,Thrombopenias
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis

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