1
|
Behnke O. Effects of some chemicals on blood platelet microtubules, platelet shape and some platelet functions in vitro. SCANDINAVIAN JOURNAL OF HAEMATOLOGY 2009; 7:123-40. [PMID: 5450687 DOI: 10.1111/j.1600-0609.1970.tb01878.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
2
|
Behnke O, Emmersen J. Structural identification of thrombosthenin in rat megakaryocytes. SCANDINAVIAN JOURNAL OF HAEMATOLOGY 2009; 9:130-7. [PMID: 4556675 DOI: 10.1111/j.1600-0609.1972.tb00921.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
3
|
Nachman RL. Binding of adenosine disphosphate by human platelet membrane. CIBA FOUNDATION SYMPOSIUM 2008; 35:23-46. [PMID: 179768 DOI: 10.1002/9780470720172.ch3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
4
|
Bachvaroff RJ, Miller F, Rapaport FT. Appearance of cytoskeletal components on the surface of leukemia cells and of lymphocytes transformed by mitogens and Epstein-Barr virus. Proc Natl Acad Sci U S A 1980; 77:4979-83. [PMID: 6254049 PMCID: PMC349973 DOI: 10.1073/pnas.77.8.4979] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Lactoperoxidase iodination and two-dimensional electrophoresis of the labeled proteins have demonstrated well-characterized cytoskeletal proteins (actin and tubulins) on the surface of human lymphocytes undergoing blastogenic transformation and of certain malignant human cells. Such proteins could not be detected on the surface of normal resting human lymphocytes. The most prominent cytoskeletal protein identified on the surface membrane of mitogen-transformed T and B lymphocytes was actin. In Epstein-Barr virus genome-positive Burkitt's lymphoma and lymphoblastoid cell lines and in two leukemia cells, the major iodinated membrane protein components were actin and alpha 1-, alpha 2-, and beta-tubulins. These proteins were firmly connected to the cytoplasmic skeleton and could not be removed by Triton X-100. Concurrent immunofluorescence studies with specific antibodies and F(ab')2 fragments confirmed the appearance of cytoskeletal components on the biochemical data, and indicated that such cytoskeletal proteins formed distinctive patterns on the cell surface, ranging from small patches to large projections. Five-hour labeling with [35S]methionine indicates that all such cells released large quantities of labeled actin and tubulins into the culture medium. These materials were not readsorbed to the membrane surfaces of the cells.
Collapse
|
5
|
Gröschel-Stewart U. Immunochemistry of cytoplasmic contractile proteins. INTERNATIONAL REVIEW OF CYTOLOGY 1980; 65:193-254. [PMID: 6993405 DOI: 10.1016/s0074-7696(08)61961-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
6
|
Abstract
This article summarizes recent ultrastructure findings from our laboratory and documents some of the information accumulated primarily since 1975 from many laboratories. Special attention is given to documentation by scanning electron microscopy which affords insight into platelet activation (adhesion, aggregation, release/secretion) and especially platelet-vessel wall interactions. Structural physiology of platelets is considered in some detail as a basis for understanding platelet disorders contributing to clinical problems of thrombosis and hemorrhage. The impaired ability of von Willebrand platelets to adhere to injured vessel wall is reported using the human umbilical vein perfusion model. Relationships between platelets and blood coagulation factors focus on the exquisite sensitivity of platelets to minute amounts of thrombin. Unmasking of platelet factor 3 sites is identified on activated platelets, after glutaraldehyde fixation, by their reaction ot latex bearing anti-platelet factor 3 markers. The basis for platelet-collagen interactions is reviewed. Conditions for and possible mechanisms behind platelet interaction with vessel wall are discussed. Ex vivo flowing blood-vessel wall models offer opportunities for improved understanding of the platelets role(s) in vascular diseases.
Collapse
|
7
|
Chediak J, Lambert E, Maxey B. Correction of clot retraction in thrombasthenia by ATP and ristocetin. Thromb Res 1978; 12:875-82. [PMID: 675590 DOI: 10.1016/0049-3848(78)90281-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
8
|
Dassin E, Ardaillou N, Eberlin A, Bourebia J, Najean Y. Use of [75Se]-methionine as a tracer of thrombocytopoiesis. II- Kinetics in normal rats and in platelet disorders in man: a new approach. Biochem Biophys Res Commun 1978; 81:329-35. [PMID: 666757 DOI: 10.1016/0006-291x(78)91537-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
9
|
Rikihisa Y, Mizuno D. Demonstration of myosin on the cytoplasmic side of plasma membranes of guinea pig polymorphonuclear leukocytes with immunoferritin. Exp Cell Res 1977; 110:87-92. [PMID: 336384 DOI: 10.1016/0014-4827(77)90273-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
10
|
Puszkin EG, Maldonado R, Spaet TH, Zucker MB. Platelet myosin. Localization of the rod myosin fragment and effect of its antibodies on platelet function. J Biol Chem 1977. [DOI: 10.1016/s0021-9258(17)40274-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
11
|
Muszbek L, Fésüs L, Szabó T, Hársfalvi J. Procoagulant activity of thrombosthenin preparations. Thromb Res 1977; 10:635-44. [PMID: 560727 DOI: 10.1016/0049-3848(77)90046-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
12
|
Pollard TD, Fujiwara K, Handin R, Weiss G. CONTRACTILE PROTEINS IN PLATELET ACTIVATION AND CONTRACTION. Ann N Y Acad Sci 1977. [DOI: 10.1111/j.1749-6632.1977.tb41767.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
Nachman RL, Jaffe EA, Weksler BB. Immunoinhibition of ristocetin-induced platelet aggregation. J Clin Invest 1977; 59:143-8. [PMID: 299747 PMCID: PMC333341 DOI: 10.1172/jci108612] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Human platelets washed and fixed in paraformaldehyde aggregate in the presence of the antibiotic ristocetin and normal plasma. This aggregation response is abolished after digestion of the fixed platelets with chymotrypsin. Antisera to fixed washed platelets were produced in rabbits and absorbed with chymotrypsin-treated, fixed washed platelets. Monovalent Fab fragments obtained from the isolated gamma-globulin fractions of the antisera blocked ristocetin-induced aggregation of fixed washed platelets in buffer and normal platelets in platelet-rich plasma. By double-antibody immunoprecipitation, it was shown that the antibody which blocked the ristocetin reaction interacted with a platelet membrane surface protein of mol wt 155,000. The results suggest that the glycoprotein I complex on the surface of the human platelet mediates ristocetin-induced von Willebrand factor-dependent platelet aggregation.
Collapse
|
14
|
Fujiwara K, Pollard TD. Fluorescent antibody localization of myosin in the cytoplasm, cleavage furrow, and mitotic spindle of human cells. J Cell Biol 1976; 71:848-75. [PMID: 62755 PMCID: PMC2109793 DOI: 10.1083/jcb.71.3.848] [Citation(s) in RCA: 451] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We have studied the distribution of myosin molecules in human cells using myosin-specific antibody coupled with fluorescent dyes. Rabbits were immunized with platelet myosin or myosin rod. They produced antisera which precipitated only myosin among all the components in crude platelet extracts. From these antisera we isolated immunoglobulin-G (IgG) and conjugated it with tetramethylrhodamine or fluorescein. We separated IgG with 2-5 fluorochromes per molecule from both under- and over-conjugated IgG by ion exchange chromatography and used it to stain acetone-treated cells. The following controls established the specificity of the staining patterns: (a) staining with labeled preimmune IgG; (b) staining with labeled immune IgG adsorbed with purified myosin; (c) staining with labeled immune IgG mixed with either unlabeled preimmune or immune serum; and (d) staining with labeled antibody purified by affinity chromatography. In blood smears, only the cytoplasm of platelets and leukocytes stained. In spread Enson and HeLa cells, stress fibers stained strongly in closely spaced 0.5 mum spots. The cytoplasm stained uniformly in those cells presumed to be motile before acetone treatment. In dividing HeLa cells there was a high concentration of myosin-specific staining in the vicinity of the contractole ring and in the mitotic spindle, especially the region between the chromosomes and the poles. We detected no staining of erythrocytes, or nuclei of leukocytes and cultured cells, or the surface of platelets and cultured cells.
Collapse
|
15
|
|
16
|
Donati MB, Dolfini E, Morasca L, de Gaetano G. Fibrin clot retraction by a rat rhabdomyosarcoma cell line. Thromb Res 1976; 8:707-11. [PMID: 936114 DOI: 10.1016/0049-3848(76)90251-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
17
|
Nicolson GL. Transmembrane control of the receptors on normal and tumor cells. I. Cytoplasmic influence over surface components. BIOCHIMICA ET BIOPHYSICA ACTA 1976; 457:57-108. [PMID: 1260065 DOI: 10.1016/0304-4157(76)90014-9] [Citation(s) in RCA: 615] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
18
|
Muszbek L, Fésüs L, Olveti E, Szabó T. Cleavage of thrombosthenin A by thrombin. Evidence for the existence of two types of bovine platelet actin. BIOCHIMICA ET BIOPHYSICA ACTA 1976; 427:171-7. [PMID: 130929 DOI: 10.1016/0005-2795(76)90294-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bovin platelet actin prepared by Spudich's method (Spudich, J. A. (1972) Cold Spring Harbor Symp. Quant. Biol. 27, 585-594) separated into two peaks on a Sephadex G-200 column. The actin of both peaks had a mol. wt. of 42 000 on sodium dodecyl sulfate-polyacrylamide gel and activated myosin ATPase, although in a quantitatively different manner. Actin eluted in the first peak (probably an oligomeric form) was not polymerized in 2 mM MgCl2 and 0.05 M KCl, while that of the second peak went through normal G-F transformation. If CaATP was present in the incubation mixture neither actin was attacked by thrombin. However, if EDTA was added, thrombin split G-actins and the pattern of cleavage was the same as that found for muscle actin in our earlier studies, i.e. the final split products were two actinopeptides and two larger fragments of 26 500 and 11 000 daltons. It is suggested that the possible attraction of membrane-associated platelet actin for thrombin may have an importance in thrombin-induced platelet aggregation.
Collapse
|
19
|
Gröschel-Stewart U, Schreiber J, Mahlmeister C. Production of specific antibodies to contractile proteins, and their use in immunofluorescence microscopy. I. Antibodies to smooth and striated chicken muscle myosins. HISTOCHEMISTRY 1976; 46:229-36. [PMID: 55408 DOI: 10.1007/bf02462786] [Citation(s) in RCA: 84] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Antibodies prepared against actomyosins can be shown to behave similarly, if not identically to more recently prepared antibodies against highly purified myosins. Details of the purification of the antigens, and of the production of antibodies to chick myosins from smooth gizzard muscle and from striated pectoral muscle are given. The antibody specificity appears to be directed against the heavy chains of the myosin molecules, since these antibodies specifically inhibit the myosin ATPase reaction, and since in situ staining of myosin polypeptide chains on an SDS gel using the antibodies in indirect fluorescence shows staining only in the heavy band region. Use of the antibodies in immunofluorescence microscopy suggest that the antibodies are tissue, but not species, specific. Example of their use in staining tissue sections are shown.
Collapse
|
20
|
Becker RP, De Bruyn PP. The transmural passage of blood cells into myeloid sinusoids and the entry of platelets into the sinusoidal circulation; a scanning electron microscopic investigation. THE AMERICAN JOURNAL OF ANATOMY 1976; 145:183-205. [PMID: 1258805 DOI: 10.1002/aja.1001450204] [Citation(s) in RCA: 164] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Scanning electron microscopic observations of rat bone marrow reveal that the sinusoidal wall is continuous and has no permanent patent apertures allowing free communication between the extravascular and intravascular myeloid compartments. Blood cells migrate into the sinusoids by perforating the endothelial cell body. Platelets are derived from long intrasinusoidal "proplatelet" processes which originate from the cell body of extravascularly located megakaryocytes. Proplatelet processes frequently occur in clusters, with the probability that all processes in a cluster arise from a single megakaryocyte. The release of platelets into the circulation may be initiated by local constriction along these processes, at which places either individual platelets or larger segments of proplatelet cytoplasm are pinched off. The larger segments may subsequently undergo further fragmentation into individual platelets.
Collapse
|
21
|
|
22
|
|
23
|
Norberg R, Fagraeus A, Lidman K. Reaction of human smooth muscle antibody with human platelets. Clin Exp Immunol 1975; 21:284-8. [PMID: 810283 PMCID: PMC1538275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Platelets, prepared from fresh human platelet-rich plasma smeared on slides and stained with human serum containing smooth muscle antibodies (SMA) in indirect IFL, showed a bright cytoplasmic fluorescence with numerous projections extending from the surface. A prerequisite for obtaining a positive reaction with SMA-positive serum was that a chelating agent was present in the suspending medium when preparing the smears. The projections could be demonstrated also by anti-HeLa cell (anti-species) serum. This indicates that the projections had a membraneous cover. Staining of live platelets was always negative. Platelets treated with cytochalasin B for 1 hr were smooth and spherical and did not show any surface projections.
Collapse
|
24
|
Abstract
Subcellular membrane and granule fractions derived from human platelets contain factor VIIII antigen and von Willebrand factor activity but not factor VII procoagulant activity. Circulating platelets constitute a significant reservoir of plasma factor VIII antigen, containing approximately 15% of the amount of factor VIII antigen present in platelet-poor plasma. The antibiotic ristocetin, which aggregates human platelets in the presence of von Willebrand factor, nonspecifically precipitates platelet membrane factor VIII antigen. Thus normal platelets contain surface-bound as well as internally stored von Willebrand factor, a protein synthesized by endothelial cells which is necessary for normal platelet function in vivo.
Collapse
|
25
|
Abstract
The first step in thrombin-induced aggregation of blood platelets is binding of thrombin to specific receptors on the platelet membrane. Elucidation of the nature of this receptor in human platelets was attempted using radioactively labelled thrombin. In disc gel electrophoresis an extract of thrombin-treated platelets showed one peak of radioactivity near the origin. Gel filtration of the platelet extract through Sephadex G-200 showed mainly one protein peak at the void volume which contained radioactivity. After column fractionation the final isolate reacted with antiserum to thrombosthenin but did not react with antiserum to serum, fibrinogen or soluble platelet proteins. Gel electrophoresis of the reduced isolate in the presence of sodium dodecyl sulphate showed a pattern similar to thrombosthenin. To explore the possibility that thrombosthenin might be the receptor of thrombin, attempts were made to complex the receptro sites with thrombosthenin antibody or its univalent fragment. It was observed that complexing these receptors potentiates, rather than inhibits, platelet aggregation by thrombin or by adenosine diphosphate. Univalent fragment of antibody to albumin failed to cause this potentiation. Thus, blocking of the thrombosthenin sites is necessary for sensitization of platelets.
Collapse
|
26
|
|
27
|
Harris GL, Cove DH, Crawford N. Effect of divalent cations and chelating agents on the ATPase activity of platelet contractile protein, "thrombosthenin". BIOCHEMICAL MEDICINE 1974; 11:10-25. [PMID: 4278070 DOI: 10.1016/0006-2944(74)90090-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
28
|
Lindemans J, Bouma BN, Sixma JJ. Characterization and ATPase activity of human platelet actomyosin. Thromb Res 1974; 5:33-46. [PMID: 4279468 DOI: 10.1016/0049-3848(74)90108-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
29
|
|
30
|
Nachman RL, Ferris B. Binding of Adenosine Diphosphate by Isolated Membranes from Human Platelets. J Biol Chem 1974. [DOI: 10.1016/s0021-9258(19)42987-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
31
|
Pollard TD, Weihing RR. Actin and myosin and cell movement. CRC CRITICAL REVIEWS IN BIOCHEMISTRY 1974; 2:1-65. [PMID: 4273099 DOI: 10.3109/10409237409105443] [Citation(s) in RCA: 789] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
32
|
Biochemistry and Physiology. Blood 1974. [DOI: 10.1016/b978-0-12-595705-2.50012-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
33
|
Jaffe EA, Nachman RL, Becker CG, Minick CR. Culture of human endothelial cells derived from umbilical veins. Identification by morphologic and immunologic criteria. J Clin Invest 1973; 52:2745-56. [PMID: 4355998 PMCID: PMC302542 DOI: 10.1172/jci107470] [Citation(s) in RCA: 5309] [Impact Index Per Article: 104.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Endothelial cells were isolated from freshly obtained human umbilical cords by collagenase digestion of the interior of the umbilical vein. The cells were grown in tissue culture as a homogeneous population for periods up to 5 mo and some lines were subcultured for 10 serial passages. During the logarithmic phase of cell growth, cell-doubling time was 92 h. Light, phase contrast, and scanning electron microscopy demonstrated that cultured human endothelial cells grew as monolayers of closely opposed, polygonal large cells whereas both cultured human fibroblasts and human smooth muscle cells grew as overlapping layers of parallel arrays of slender, spindle-shaped cells. By transmission electron microscopy, cultured endothelial cells were seen to contain cytoplasmic inclusions (Weibel-Palade bodies) characteristic of in situ endothelial cells. These inclusions were also found in endothelial cells lining umbilical veins but were not seen in smooth muscle cells or fibroblasts in culture or in situ. Cultured endothelial cells contained abundant quantities of smooth muscle actomyosin. Cultured endothelial cells also contained ABH antigens appropriate to the tissue donor's blood type; these antigens were not detectable on cultured smooth muscle cells or fibroblasts. These studies demonstrate that it is possible to culture morphologically and immunologically identifiable human endothelial cells for periods up to 5 mo.
Collapse
|
34
|
Gabbiani G, Ryan GB, Lamelin JP, Vassalli P, Majno G, Bouvier CA, Cruchaud A, Lüscher EF. Human smooth muscle autoantibody. Its identification as antiactin antibody and a study of its binding to "nonmuscular" cells. THE AMERICAN JOURNAL OF PATHOLOGY 1973; 72:473-88. [PMID: 4125700 PMCID: PMC1904020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
When human serum containing smooth muscle autoantibodies (SMA) is incubated with extracts containing thrombosthenin (the contractile material of platelets) or thrombosthenin-A (the actin-like moiety of thrombosthenin), it loses its ability to bind to smooth muscle. Such binding is also diminished when SMA serum is incubated with lysed platelets; this effect is not seen if the SMA serum is incubated with intact platelets. The incubation of other autoantibodies (such as antimitochondrial or antinuclear antibodies) with thrombosthenin does not affect their binding to the specific antigens. It appears that SMA is directed against the actin fraction of thrombosthenin-ie, SMA is an antiactin antibody. Hence the name of antiactin autoantibody (AAA) seems more appropriate than smooth muscle autoantibody (SMA). A study of the distribution of antiactin autoantibody binding in rat, rabbit and man shows that several "nonmuscular" structures contain actin under normal conditions; these include megakaryocytes and platelets, normal rat hepatocytes, the brush borders of renal tubules, the periphery of epithelial cells of the intestine, polymorphs and lymphocytes in lymph nodes (but not thymic cortical lymphocytes). In addition, certain cell types (such as granulation tissue fibroblasts, cultivated fibroblasts, hepatocytes or regenerating liver and epidermal cells growing over a skin wound) can reversibly acquire a massive network of actin-containing microfilaments resembling those in smooth muscle.
Collapse
|
35
|
|
36
|
Becker CG, Nachman RL. Contractile proteins of endothelial cells, platelets and smooth muscle. THE AMERICAN JOURNAL OF PATHOLOGY 1973; 71:1-22. [PMID: 4267065 PMCID: PMC1907211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In experiments described herein it was observed, by direct and indirect immunofluorescence technics, that rabbit antisera to human platelet actomyosin (thrombosthenin) stained mature megakaryocytes, blood platelets, endothelial cells and smooth muscle cells of arteries and veins, endothelial cells of liver sinusoids and certain capillaries, uterine smooth muscle cells, myoepithelial cells, perineurial cells of peripheral nerves and "fibroblastic" cells of granulation tissue. The specificity of immunohistologic staining was confirmed by appropriate absorption and blocking studies and immunodiffusional analysis in agarose gel. It was also observed by immunodiffusional analysis in agarose gel, electrophoresis of actomyosin fragments in polyacrylamide gels, immune inhibition of actomyosin ATPase activity and immune aggregation of platelets that uterine and platelet actomyosin are partially, but not completely, identical.
Collapse
|
37
|
|
38
|
Becker EL, Henson PM. In vitro studies of immunologically induced secretion of mediators from cells and related phenomena. Adv Immunol 1973; 17:93-193. [PMID: 4131638 DOI: 10.1016/s0065-2776(08)60732-4] [Citation(s) in RCA: 128] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
39
|
Karpatkin S, Weiss HJ. Deficiency of glutathione peroxidase associated with high levels of reduced glutathione in glanzmann's thrombasthenia. N Engl J Med 1972; 287:1062-6. [PMID: 4673006 DOI: 10.1056/nejm197211232872103] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
40
|
|
41
|
|
42
|
Niewiarowski S, Regoeczi E, Mustard JF. Platelet interaction with fibrinogen and fibrin: comparison of the interaction of platelets with that of fibroblasts, leukocytes, and erythrocytes. Ann N Y Acad Sci 1972; 201:72-83. [PMID: 4509694 DOI: 10.1111/j.1749-6632.1972.tb16288.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
43
|
|
44
|
Baenziger NL, Brodie G, Majerus PW. Isolation and Properties of a Thrombin-sensitive Protein of Human Platelets. J Biol Chem 1972. [DOI: 10.1016/s0021-9258(19)45271-x] [Citation(s) in RCA: 200] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
45
|
Booyse FM, Hoveke TP, Kisieleski D, Rafelson ME. Mechanism and control of platelet-platelet interaction. Microvasc Res 1972. [DOI: 10.1016/0026-2862(72)90063-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
46
|
|
47
|
|
48
|
|
49
|
Zucker-Franklin D, Grusky G. The actin and myosin filaments of human and bovine blood platelets. J Clin Invest 1972; 51:419-30. [PMID: 4333023 PMCID: PMC302141 DOI: 10.1172/jci106828] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The contractility of platelets has been attributed to an actomyosin-like protein which has been well defined on a physicochemical basis. Moreover, platelets contain +/-80 A filaments which resemble actin filaments in smooth muscle. Studies were undertaken on human and bovine platelets to better define the morphologic structures which may subserve this contractile function. In order to identify actin, the ability of the filaments to react with heavy meromyosin (HMM) was tested. Accordingly, platelets were glycerinated and treated with HMM. In addition, platelet actin was extracted, reacted with HMM, and examined by negative staining. In both instances typical arrowhead structures with clearly defined polarity and a periodicity of +/-360 A formed. As is the case with purified muscle actin, the complexes were dissociable with Mg-ATP. The formation of myosin-like filaments was observed when osmotically shocked platelets were incubated with MgCl(2) and excess ATP. These "thick" filaments measured 250-300 A in width, tapered at both ends and often occurred in clumps. They resembled aggregates of thick filaments described in contracted smooth muscle. Extraction of platelets by methods suitable for the demonstration of myosin showed filaments with an average length of 0.3 mu, a smooth shaft, and frayed or bulbous ends. These appeared identical to those seen in synthetically prepared myosin of striated muscle. It is suggested that the filaments described here represent the actin and myosin of platelets.
Collapse
|
50
|
Crawford N. The presence of contractile proteins in platelet microparticles isolated from human and animal platelet-free plasma. Br J Haematol 1971; 21:53-69. [PMID: 4254312 DOI: 10.1111/j.1365-2141.1971.tb03416.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|