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001-es BibID:	BIBFORM068608
035-os BibID:	(cikkazonosító)9795271 (WOS)000402835500001 (Scopus)85021663462
Első szerző:	Hudák Renáta
Cím:	The phosphatase inhibitor calyculin-A impairs clot retraction, platelet activation and thrombin generation / Hudák Renáta, Vincze János, Csernoch László, Bekéné Debreceni Ildikó, Oláh Tamás, Erdődi Ferenc, Kenneth J. Clemetson, Kappelmayer János
Dátum:	2017
ISSN:	2314-6133 2314-6141
Megjegyzések:	The aim of this study was to investigate the effect of the serine/threonine protein phosphatase inhibitor, calyculin-A (CLA) on clot formation and on the procoagulant activity of human platelets. Platelet rich plasma (PRP) samples were preincubated with buffer or CLA and subsequently platelets were activated by the protease-activated receptor 1 (PAR-1) activator, thrombin-receptor activating peptide (TRAP). Clot retraction was detected by observing clot morphology up to 1 hour, phosphatidylserine (PS)-expression was studied by flow cytometry and thrombin generation was measured by a fluorimetric assay. For the intracellular Ca2+ assay, platelets were loaded with calcium-indicator dyes and the measurements were carried out using a ratiometric method with real-time confocal microscopy. CLA preincubation inhibited clot retraction, PS-expression and thrombin formation. TRAP activation elicited Ca2+ response and PS-expression in a subset of platelets. The activated PRP displayed significantly faster and enhanced thrombin generation compared to non-activated samples. CLA pretreatment abrogated PS-exposure and clot retraction also in TRAP-activated samples. As a consequence of the inhibitory effect on calcium elevation and PS-expression, CLA significantly downregulated thrombin generation in PRP. Our results show that CLA-pretreatment may be a useful tool to investigate platelet activation mechanisms that contribute to clot formation and thrombin generation.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk phosphatases calyculin-A phosphatidylserine thrombin generation
Megjelenés:	Biomed Research International. - 2017 (2017), p. 1-10. -
További szerzők:	Vincze János (1988-) (orvos) Csernoch László (1961-) (élettanász) Bekéné Debreceni Ildikó (1970-) (biológus) Oláh Tamás (1983-) (élettanász) Erdődi Ferenc (1953-) (biokémikus) Clemetson, Kenneth J. Kappelmayer János (1960-) (laboratóriumi szakorvos)
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM068609
035-os BibID:	(cikkazonosító)6138145 (WOS)000402744300001 (Scopus)85021628120
Első szerző:	Kappelmayer János (laboratóriumi szakorvos)
Cím:	The Interaction of Selectins and PSGL-1 as a Key Component in Thrombus Formation and Cancer Progression / János Kappelmayer, Béla Nagy Jr.
Dátum:	2017
ISSN:	2314-6133 2314-6141
Megjegyzések:	Cellular interaction is inevitable in the pathomechanism of human disease. Formation of heterotypic cellular aggregates, between distinct cells of hematopoietic and non-hematopoietic origin, may be involved in events leading to inflammation and the complex process of cancer progression. Among adhesion receptors, the family of selectins with their ligands have been considered as one of the major contributors to cell-cell interactions. Consequently, the inhibition of the interplay between selectins and their ligands may have potential therapeutic benefits. In this review, we focus on the current evidence on the selectins as crucial modulators of inflammatory, thrombotic and malignant disorders. Knowing that there is promiscuity in selectin binding, we outline the importance of a key protein that serves as a ligand for all selectins. This dimeric mucin, the P-selectin glycoprotein ligand 1 (PSGL-1), has emerged as a major player in inflammation, thrombus and cancer development. We discuss the interaction of PSGL-1 with various selectins in physiological and pathological processes with particular emphasis on mechanisms that lead to severe disease.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Biomed Research International. - 2017 (2017), p. 1-18. -
További szerzők:	Nagy Béla Jr. (1980-) (labordiagnosztikai szakorvos)
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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