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Título

Variations in Platelet Proteins Associated with Arterial Thrombosis

AutorGarcía Arias-Salgado, Elena ; Larrucea, Susana ; Butta, Nora ; Fernández, Darío ; García-Muñoz, Soledad; Parrilla, Roberto L. ; Sánchez Ayuso, Matilde
Palabras claveArterial thrombosis
Cytoskeleton
GAPDH
ILK
PK
Platelets
Fecha de publicación2008
EditorElsevier
CitaciónThrombosis Research 122(5):640-647(2008)
ResumenIntroduction: Hyperactivity of platelets has been associated with thrombotic episodes by molecular mechanisms not yet elucidated. The present work aimed at identifying whether the platelet protein content from patients who had suffered an arterial thrombosis episode differed from that of platelets obtained from normal healthy donors. Methods: Differential platelet protein profiles were determined by 2-dimensional (2-D) gel electrophoresis and Western blot analysis of total platelet lysates. Identification of differentially expressed proteins was carried out by mass spectrometry (MALDI-TOF). Results: We found a decreased platelet content of three protein spots in patients of arterial thrombosis: integrin linked kinase (ILK), fructose bisphosphate aldolase (aldolase) and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) whereas the content of four other protein spots was increased: actin binding protein, coronine like (p57), non-muscle myosin heavy chain (NMMHC-A), pyruvate kinase M2 isoenzyme (PK) and phosphoglycerate kinase (PGK). The variations in ILK, GAPDH and PK were validated by Western blot analysis. The proteins showing a decreased platelet content in arterial thrombosis patients are associated with the cytoskeletal insoluble fraction and the detected increase in some proteins seems to be due to the generation of peptides caused by a limited proteolysis. Differences in the protein profiles of circulating platelets from arterial thrombosis were maintained months after the acute thrombotic event and disappear in the long term. Conclusions: The observed variations in some platelet proteins suggest the existence of a perturbation in the cytoskeletal organization and increased proteolysis, both indicative of a platelet pro-active state, persistent after the thrombotic event
Descripción8 páginas, 3 figuras, 2 tablas -- PAGS nros. 640647
Versión del editorhttp://dx.doi.org/10.1016/j.thromres.2008.01.017
URIhttp://hdl.handle.net/10261/57356
DOI10.1016/j.thromres.2008.01.017
ISSN0049-3848
E-ISSN1879-2472
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