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001-es BibID:BIBFORM053643
Első szerző:Kiss Flóra (bőrgyógyász)
Cím:Leukemic lymphoblasts, a novel expression site of coagulation factor XIII subunit A / Flóra Kiss, Zsuzsanna Hevessy, Anikó Veszprémi, Éva Katona, Csongor Kiss, György Vereb, László Muszbek, János Kappelmayer
Dátum:2006
Megjegyzések:Blood coagulation factor XIII (FXIII) is a protransglutaminasecirculating as a tetramer formed by two types of subunits (A2B2).The intracellular dimeric form of FXIII (A2) is present in platelets,megakaryocytes, monocytes and macrophages and hasbeen detected in mono- and megakaryocytic leukemias.The aimof our study was to investigate FXIII-A expression in newly diagnosedB cell acute lymphoblastic leukemia (ALL) samples. Weexamined 47 de novo ALL cases of B cell origin by triple colorlabeling with flow cytometry. FXIII-A was detected by a FITCconjugated monoclonal antibody combined with CD34 andCD45 staining. In selected cases FXIII-A was investigated onslides prepared from blasts and visualized with a fluorescentmicroscope. In addition, blasts were studied by Western blotanalysis and FXIII-A was measured by a highly sensitive ELISAmethod. By flow cytometry 19 samples of the 47 cases werefound to be FXIII-A positive. Antigen concentration was 3.11 ?1.19 fg/blast, while normal lymphoid precursors and maturelymphocytes from B-CLL did not contain FXIII-A.In the lysate oflymphoblasts that were positive by flow cytometry, a single band(82 kDa) corresponding to FXIII-A was detected on Westernblots. Confocal laser scanning microscopic examination revealedthe presence of FXIII-A in the cytoplasm of these lymphoblasts.This novel expression site of FXIII-A in leukemic lymphoblastscan be utilized as a diagnostic tool and may also gain functionalsignificance in B-lineage ALL.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Coagulation factor XIII
acute lymphoblastic leukemia
flow cytometry
Megjelenés:Thrombosis Haemostasis. - 96 : 2 (2006), p. 176-182. -
További szerzők:Hevessy Zsuzsanna (1966-) (laboratóriumi szakorvos) Veszprémi Anikó Katona Éva (1961-) (klinikai biokémikus) Kiss Csongor (1956-) (hematológus, onkológus) Vereb György (1965-) (biofizikus, orvos) Muszbek László (1942-) (haematológus, kutató orvos) Kappelmayer János (1960-) (laboratóriumi szakorvos)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM034576
Első szerző:Simon Ágnes (laboratóriumi szakorvos)
Cím:Expression of coagulation factor XIII subunit A in acute promyelocytic leukemia / Ágnes Simon, Zsuzsa Bagoly, Zsuzsanna Hevessy, László Csáthy, Éva Katona, György Vereb, Anikó Ujfalusi, László Szerafin, László Muszbek, János Kappelmayer
Dátum:2012
ISSN:1552-4949
Megjegyzések:Leukemic cells often express markers which are not characteristic of their particular cell lineage. In this study we identified the "A" subunit of coagulation factor XIII (FXIII-A) in leukemic promyelocytes in de novo AML M3 cases. The cytoplasmic presence of factor XIII-A has previously been shown only in platelets/megakaryocytes and monocytes/macrophages. Furthermore, more recently we described the presence of FXIII-A in leukemic lymphoblasts. We studied 14 patients with this rare type of acute leukemia in a period of 4 years and investigated their bone marrow samples by 3-color flow cytometry upon diagnosis, mainly focusing on FXIII-A expression of leukemic cells. We detected FXIII-A also by ELISA, Western-blot and confocal laser scanning microscopy. This was a homogenous group of AML M3 patients with translocation t(15;17)(q22;q21) detected by fluorescence in situ hybridization (FISH). In 10 out of 14 samples, FXIII-A was detectable by flow cytometry and was coexpressed with markers characteristic for leukemic promyleocytes (CD45dim/CD13+/CD33+/CD117+/cyMPO+ and HLA-DR-/CD34-/CD14-/CD15-). Staining for the markers GPIIb and GPIX were negative, and FXIII-A was identified in the cytoplasm of the cells by confocal microscopy in a relatively high quantity, as measured by ELISA. By Western blot analysis we could identify FXIII-A in the native 82 kD form and in cleaved forms corresponding to cleavage products observed when purified FXIII-A was treated by human neutrophil elastase. Since normal promyelocytes were FXIII-A negative, this novel expression site of FXIII-A in AML M3 can be considered as a leukemia associated immunophenotype and may have pathophysiological significance.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
egyetemen (Magyarországon) készült közlemény
Molekuláris Medicina
Megjelenés:Cytometry. Part B. Clinical Cytometry. - 82B : 4 (2012), p. 209-216. -
További szerzők:Bagoly Zsuzsa (1978-) (orvos) Hevessy Zsuzsanna (1966-) (laboratóriumi szakorvos) Csáthy László (1979-) (laboratóriumi szakorvos) Katona Éva (1961-) (klinikai biokémikus) Vereb György (1965-) (biofizikus, orvos) Ujfalusi Anikó (1968-) (gyermekorvos, laboratóriumi szakorvos) Szerafin László (1958-) (belgyógyászat, haematológia, klinikai onkológia szakorvos) Muszbek László (1942-) (haematológus, kutató orvos) Kappelmayer János (1960-) (laboratóriumi szakorvos)
Pályázati támogatás:TÁMOP-4.2.1/B-09/1/KONV-2010-0007
TÁMOP
Celluláris hematológia - immunológia
TÁMOP-4.2.1/B-09/1/KONV-2010-0007
TÁMOP
A véralvadás XIII-as faktorának (FXIII) struktúrája, funkciója, előfordulása egyéb testnedvekben és kapcsolata trombotikus megbetegedésekkel
Internet cím:DOI
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