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001-es BibID:	BIBFORM043325
035-os BibID:	PMID:11781258
Első szerző:	Ajzner Éva (laboratóriumi szakorvos)
Cím:	Severe coagulation factor V deficiency caused by 2 novel frameshift mutations : 2952delT in exon 13 and 5493insG in exon 16 of factor 5 gene / Éva Ajzner, István Balogh, Teréz Szabó, Anikó Marosi, Gizella Haramura, László Muszbek
Dátum:	2002
ISSN:	0006-4971
Megjegyzések:	A male infant with severe bleeding tendency had undetectable factor V activity. Sequence analysis of the proband's DNA revealed one base deletion in exon 13 (2952delT) and one base insertion in exon 16 (5493insG) in heterozygous form. Both mutations introduced a frameshift and a premature stop at codons 930 and 1776, respectively. The proband's father and mother were heterozygous for 2952delT and for 5493insG, respectively. Both mutations would result in the synthesis of truncated proteins lacking complete light chain or its C-terminal part. In the patient's plasma, no factor V light chain was detected by enzyme-linked immunosorbent assay. The N-terminal portion of factor V containing the heavy chain, and the connecting B domain was severely reduced but detectable (1.7%). A small amount of truncated factor V?specific protein with a molecular weight ratio of 236 kd could be immunoprecipitated from the plasma and detected by Western blotting. This protein, factor VDebrecen, corresponds to the translated product of exon 16 mutant allele.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Blood. - 99 : 2 (2002), p. 702-705. -
További szerzők:	Balogh István (1972-) (molekuláris biológus, genetikus) Szabó Terézia Marosi Anikó Haramura Gizella (1957-) (vezető analitikus) Muszbek László (1942-) (haematológus, kutató orvos)
Pályázati támogatás:	T030406 OTKA
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM034624
Első szerző:	Balogh István (molekuláris biológus, genetikus)
Cím:	Val34Leu polymorphism of plasma factor XIII : biochemistry and epidemiology in familial thrombophilia / István Balogh, Gabriella Szőke, Levente Kárpáti, Ulla Wartiovaara, Éva Katona, István Komáromi, Gizella Haramura, György Pfliegler, Hanna Mikkola, László Muszbek
Dátum:	2000
ISSN:	0006-4971
Megjegyzések:	Val34Leu polymorphism of the A subunit of coagulation factor XIII (FXIII-A) is located in the activation peptide (AP) just 3 amino acids away from the thrombin cleavage site. This mutation has been associated with a protective effect against occlusive arterial diseases and venous thrombosis; however, its biochemical consequences have not been explored. In the current study it was demonstrated that the intracellular stability and the plasma concentration of FXIII of different Val34Leu genotypes are identical, which suggests that there is no difference in the rate of synthesis and externalization of wild-type and mutant FXIII-A. In contrast, the release of AP by thrombin from the Leu34 allele proceeded significantly faster than from its wild-type Val34 counterpart. By molecular modeling larger interaction energy was calculated between the Leu34 variant and the respective domains of thrombin than between the Val34 variant and thrombin. In agreement with these findings, the activation of mutant plasma FXIII by thrombin was faster and required less thrombin than that of the wild-type variant. Full thrombin activation of purified plasma FXIII of different genotypes, however, resulted in identical specific transglutaminase activities. Similarly, the mean specific FXIII activity in the plasma was the same in the groups with wild-type, heterozygous, and homozygous variants. Faster activation of the Leu34 allele hardly could be associated with its presumed protective effect against venous thrombosis. No such protective effect was observed in a large group of patients with familial thrombophilia.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Blood. - 96 : 7 (2000), p. 2479-2486. -
További szerzők:	Szőke Gabriella Kárpáti Levente (1968-) (okleveles vegyész) Wartiovaara, Ulla Katona Éva (1961-) (klinikai biokémikus) Komáromi István (1957-) (vegyész, molekuláris biológus, biokémikus) Haramura Gizella (1957-) (vezető analitikus) Pfliegler György (1949-) (belgyógyász, hematológus, labor szakorvos) Mikkola, Hanna Muszbek László (1942-) (haematológus, kutató orvos)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat Szerző által megadott URL
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