Biomaterial Database

Immunoelectron microscopic changes of the platelet plasma membrane after activation. 1996

E Cramer, and G Berger

INSERM U91, Hôpital Henri Mondor, Créteil, France.

The observation of protein redistributions from one compartment to another during platelet activation reflects changes in platelet functionality. At rest alpha-granules express a high level of the main aggregation receptor GPIIb/IIIa, and only a small amount of the adhesion receptor complex GPIb/IX/V which lines the plasma membrane. After activation, the plasma membrane loses GPIb whereas the level of expression of the other aggregative proteins such as GPIIb/IIIa increase. These observations correlate well with the passage of the platelet from an adhesive to an aggregative state.

UI	MeSH Term	Description	Entries
D008562	Membrane Glycoproteins	Glycoproteins found on the membrane or surface of cells.	Cell Surface Glycoproteins,Surface Glycoproteins,Cell Surface Glycoprotein,Membrane Glycoprotein,Surface Glycoprotein,Glycoprotein, Cell Surface,Glycoprotein, Membrane,Glycoprotein, Surface,Glycoproteins, Cell Surface,Glycoproteins, Membrane,Glycoproteins, Surface,Surface Glycoprotein, Cell,Surface Glycoproteins, Cell
D001792	Blood Platelets	Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation.	Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D002462	Cell Membrane	The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.	Plasma Membrane,Cytoplasmic Membrane,Cell Membranes,Cytoplasmic Membranes,Membrane, Cell,Membrane, Cytoplasmic,Membrane, Plasma,Membranes, Cell,Membranes, Cytoplasmic,Membranes, Plasma,Plasma Membranes
D005165	Factor V	Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor V accomplishes this by forming a complex with factor Xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor V leads to Owren's disease.	Coagulation Factor V,Proaccelerin,AC Globulin,Blood Coagulation Factor V,Factor 5,Factor Five,Factor Pi,Factor V, Coagulation
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015539	Platelet Activation	A series of progressive, overlapping events, triggered by exposure of the PLATELETS to subendothelial tissue. These events include shape change, adhesiveness, aggregation, and release reactions. When carried through to completion, these events lead to the formation of a stable hemostatic plug.	Activation, Platelet,Activations, Platelet,Platelet Activations
D015703	Antigens, CD	Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation.	CD Antigen,Cluster of Differentiation Antigen,Cluster of Differentiation Marker,Differentiation Antigens, Leukocyte, Human,Leukocyte Differentiation Antigens, Human,Cluster of Differentiation Antigens,Cluster of Differentiation Markers,Antigen Cluster, Differentiation,Antigen, CD,CD Antigens,Differentiation Antigen Cluster,Differentiation Marker Cluster,Marker Cluster, Differentiation
D016253	Microscopy, Immunoelectron	Microscopy in which the samples are first stained immunocytochemically and then examined using an electron microscope. Immunoelectron microscopy is used extensively in diagnostic virology as part of very sensitive immunoassays.	Immunoelectron Microscopy,Microscopy, Immuno-Electron,Immuno-Electron Microscopies,Immuno-Electron Microscopy,Immunoelectron Microscopies,Microscopies, Immuno-Electron,Microscopies, Immunoelectron,Microscopy, Immuno Electron
D060245	Tetraspanin 29	A subtype of tetraspanin protein that plays a role in cell adhesion, cell motility, and tumor metastasis. It functions in platelet activation and aggregation, the formation of paranodal junctions in neuronal tissue, and the fusion of sperm with egg.	Antigens, CD9,27 kDa Diphtheria Toxin Receptor-Associated Protein,CD9 Antigen,DRAP27 Protein,Leukemia-Associated Cell Surface Antigen p24,Motility-Related Protein-1,Tetraspanin-29,p24-CD9 Antigen,27 kDa Diphtheria Toxin Receptor Associated Protein,Antigen, CD9,CD9 Antigens,Leukemia Associated Cell Surface Antigen p24,Motility Related Protein 1,p24 CD9 Antigen
D018955	CD36 Antigens	Leukocyte differentiation antigens and major platelet membrane glycoproteins present on MONOCYTES; ENDOTHELIAL CELLS; PLATELETS; and mammary EPITHELIAL CELLS. They play major roles in CELL ADHESION; SIGNAL TRANSDUCTION; and regulation of angiogenesis. CD36 is a receptor for THROMBOSPONDINS and can act as a scavenger receptor that recognizes and transports oxidized LIPOPROTEINS and FATTY ACIDS.	Antigens, CD36,OKM5 Antigen,Platelet Glycoprotein IV,Platelet Membrane Glycoprotein IIIb,Receptors, Thrombospondin,Scavenger Receptors, Class B, Type I,Thrombospondin Receptors,Adipocyte Membrane Protein p88,CD36 Antigen,CD36 Antigen (Collagen Type I Receptor, Thrombospondin Receptor),CD36 Fatty Acid Transporter,CD36 Protein,FAT (Fatty Acid Translocase) - CD36 Antigen,GPIIIb Platelet Glycoprotein,GPIV Platelet Glycoprotein,Platelet Glycoprotein IIIb,Platelet Membrane Glycoprotein IV,SR-BI Protein,SR-BI Receptor,Thrombospondin Receptor,Antigen, CD36,Antigen, OKM5,Glycoprotein IIIb, Platelet,Glycoprotein IV, Platelet,Platelet Glycoprotein, GPIIIb,Platelet Glycoprotein, GPIV,Receptor, SR-BI,Receptor, Thrombospondin,SR BI Protein,SR BI Receptor