Biomaterial Database

Immunocytochemical study of membrane skeletons in abnormally shaped erythrocytes as revealed by a quick-freezing and deep-etching method. 1993

S Ohno, and N Terada, and Y Fujii, and H Ueda, and H Kuramoto, and N Kamisawa

Department of Anatomy, Yamanashi Medical University, Japan.

Ultrastructures of membrane skeletons in spherocytic and elliptocytic erythrocytes were investigated immunocytochemically. Erythrocytes obtained from patients with hereditary spherocytosis (HS) and hereditary elliptocytosis (HE) were split open mechanically to obtain exposed cytoplasmic sides of erythrocyte membranes and were immunostained with anti-spectrin antibody. Replica membranes were prepared by a quick-freezing and deep-etching method and were checked by electron microscopy. The in situ membrane skeletons of normal erythrocytes consisted mainly of reticular patterns of spectrin filaments, which formed networks on the cytoplasmic sides of the cell membrane. In contrast, the membrane skeletons of abnormally shaped erythrocytes (HS and HE) were much less filamentous and more granular than those of normal erythrocytes. This abnormal organization in erythrocyte membrane skeletons may be one of the factors that induce abnormally shaped erythrocytes in HS and HE patients.

UI	MeSH Term	Description	Entries
D007150	Immunohistochemistry	Histochemical localization of immunoreactive substances using labeled antibodies as reagents.	Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D003593	Cytoplasm	The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990)	Protoplasm,Cytoplasms,Protoplasms
D004612	Elliptocytosis, Hereditary	An intrinsic defect of erythrocytes inherited as an autosomal dominant trait. The erythrocytes assume an oval or elliptical shape.	Ovalocytosis, Hereditary,Elliptocytoses, Hereditary,Hereditary Elliptocytoses,Hereditary Elliptocytosis,Hereditary Ovalocytoses,Hereditary Ovalocytosis,Ovalocytoses, Hereditary
D004910	Erythrocyte Membrane	The semi-permeable outer structure of a red blood cell. It is known as a red cell 'ghost' after HEMOLYSIS.	Erythrocyte Ghost,Red Cell Cytoskeleton,Red Cell Ghost,Erythrocyte Cytoskeleton,Cytoskeleton, Erythrocyte,Cytoskeleton, Red Cell,Erythrocyte Cytoskeletons,Erythrocyte Ghosts,Erythrocyte Membranes,Ghost, Erythrocyte,Ghost, Red Cell,Membrane, Erythrocyte,Red Cell Cytoskeletons,Red Cell Ghosts
D004913	Erythrocytes, Abnormal	Oxygen-carrying RED BLOOD CELLS in mammalian blood that are abnormal in structure or function.	Abnormal Erythrocytes,Abnormal Erythrocyte,Erythrocyte, Abnormal
D005260	Female		Females
D005613	Freeze Etching	A replica technique in which cells are frozen to a very low temperature and cracked with a knife blade to expose the interior surfaces of the cells or cell membranes. The cracked cell surfaces are then freeze-dried to expose their constituents. The surfaces are now ready for shadowing to be viewed using an electron microscope. This method differs from freeze-fracturing in that no cryoprotectant is used and, thus, allows for the sublimation of water during the freeze-drying process to etch the surfaces.	Etching, Freeze
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man