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Kállai J, Gindele R, Pénzes-Daku K, Balogh G, Bogáti R, Bécsi B, Katona É, Oláh Z, Ilonczai P, Boda Z, Róna-Tas Á, Nemes L, Marton I, Bereczky Z. Clinical and Molecular Characterization of Nine Novel Antithrombin Mutations. Int J Mol Sci 2024; 25:2893. [PMID: 38474138 DOI: 10.3390/ijms25052893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
Antithrombin (AT) is the major plasma inhibitor of thrombin (FIIa) and activated factor X (FXa), and antithrombin deficiency (ATD) is one of the most severe thrombophilic disorders. In this study, we identified nine novel AT mutations and investigated their genotype-phenotype correlations. Clinical and laboratory data from patients were collected, and the nine mutant AT proteins (p.Arg14Lys, p.Cys32Tyr, p.Arg78Gly, p.Met121Arg, p.Leu245Pro, p.Leu270Argfs*14, p.Asn450Ile, p.Gly456delins_Ala_Thr and p.Pro461Thr) were expressed in HEK293 cells; then, Western blotting, N-Glycosidase F digestion, and ELISA were used to detect wild-type and mutant AT. RT-qPCR was performed to determine the expression of AT mRNA from the transfected cells. Functional studies (AT activity in the presence and in the absence of heparin and heparin-binding studies with the surface plasmon resonance method) were carried out. Mutations were also investigated by in silico methods. Type I ATD caused by altered protein synthesis (p.Cys32Tyr, p.Leu270Argfs*14, p.Asn450Ile) or secretion disorder (p.Met121Arg, p.Leu245Pro, p.Gly456delins_Ala_Thr) was proved in six mutants, while type II heparin-binding-site ATD (p.Arg78Gly) and pleiotropic-effect ATD (p.Pro461Thr) were suggested in two mutants. Finally, the pathogenic role of p.Arg14Lys was equivocal. We provided evidence to understand the pathogenic nature of novel SERPINC1 mutations through in vitro expression studies.
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Affiliation(s)
- Judit Kállai
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
- HUN-REN-UD Cell Biology and Signaling Research Group, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Réka Gindele
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Krisztina Pénzes-Daku
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Gábor Balogh
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Réka Bogáti
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Bálint Bécsi
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Éva Katona
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Zsolt Oláh
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Péter Ilonczai
- Jósa András Teaching Hospital of University of Debrecen, 4400 Nyíregyháza, Hungary
| | - Zoltán Boda
- Department of Internal Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Ágnes Róna-Tas
- Department Medical Center of the Hungarian Defence Forces, National Hemophilia Center and Hemostasis, 1134 Budapest, Hungary
| | - László Nemes
- Department Medical Center of the Hungarian Defence Forces, National Hemophilia Center and Hemostasis, 1134 Budapest, Hungary
| | - Imelda Marton
- Department of Medicine, Albert Szent-Györgyi Medical School, University of Szeged, 6720 Szeged, Hungary
- Department of Transfusion Medicine, Albert Szent-Györgyi Medical School, University of Szeged, 6720 Szeged, Hungary
| | - Zsuzsanna Bereczky
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
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Miesbach W, Kittler S, Bauhofer A, Königs C, Becker T, Nemes L, Staus A, Schüttrumpf J. Long-term analysis of the benefit of prophylaxis for adult patients with severe or moderate haemophilia A. Haemophilia 2020; 26:467-477. [PMID: 32293085 DOI: 10.1111/hae.13988] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/02/2020] [Accepted: 03/16/2020] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Prophylaxis with factor VIII (FVIII) concentrates in children with haemophilia A (HA) is current standard of care. The benefit of prophylactic treatment for adult HA patients is not commonly accepted. AIM To investigate the benefit of prophylaxis over on-demand treatment in adult and elderly patients with severe or non-severe HA in a real-life setting. METHODS Data from 163 patients comprising 1202 patient-years were evaluated for 7.5 (±5.3) years. The effects on the annual bleeding rate (ABR, including spontaneous and traumatic bleeds) of treatment with a plasma-derived FVIII concentrate, the patient's age and disease severity were investigated. The effect of changing the treatment from on demand to continuous prophylaxis on the patients' ABRs was further analysed. RESULTS Prophylaxis had the greatest effect on the ABRs of patients of any age with severe or non-severe HA. The difference in ABR of all patients treated on demand (median 31.4; interquartile range (IQR) 27.6; N = 83) compared with those treated prophylactically (median 1.3; IQR 3.6; N = 122) was statistically significant (P < .05), even for patients with non-severe HA (median 8.4; IQR 15.5; N = 11) vs median 1.5; IQR 4.2 (N = 17), P < .05). Patients, aged up to 88 years, switching from on demand to continuous prophylaxis showed the lowest median ABR (1.1; N = 51) after their regimen change. CONCLUSION Any (even low-frequency) prophylaxis results in lower ABR than on-demand treatment. Patients switching to prophylaxis benefitted the most, irrespective of age or HA severity. Prophylactic treatment-even tertiary-is the regimen of choice for patients of any age, including elderly patients, with severe or non-severe HA.
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Affiliation(s)
- Wolfgang Miesbach
- Haemophilia Centre, Medical Clinic 2, Institute of Transfusion Medicine, University Hospital Frankfurt, Frankfurt/Main, Germany
| | | | | | - Christoph Königs
- Haemophilia Centre, Department of Paediatrics, University Hospital Frankfurt, Goethe University, Frankfurt/Main, Germany
| | | | - László Nemes
- National Haemophilia Centre and Haemostasis Department, Medical Centre, Hungarian Defence Forces, Budapest, Hungary
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Kittler SFK, Miesbach W, Bauhofer A, Becker T, Schüttrumpf J, Dubovy P, Nemes L, Richter H, Königs C. Long-Term Safety and Efficacy Data of a Plasma-Derived Factor VIII Concentrate with von Willebrand Factor for Treatment of Patients with Hemophilia A Covering 18 Years. Hamostaseologie 2019; 39:360-367. [DOI: 10.1055/s-0039-1698810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
AbstractWe describe the results of the (to our knowledge) longest long-term noninterventional study so far performed to obtain real-life data on the treatment of hemophilia A patients with a single plasma-derived FVIII concentrate containing von Willebrand factor (pdFVIII; Haemoctin/Faktor VIII SDH Intersero). A total of 198 patients (146 in Germany and 52 in Hungary), of whom 160 had severe and 38 nonsevere hemophilia A, representing all age groups (0–88 years; mean ∼25 years at inclusion) were analyzed during prophylactic or on-demand treatment over 18 years (overall 1,418 patient-years; mean >7 years). pdFVIII was very effective and well tolerated. The mean annual bleeding rate, including spontaneous and traumatic bleeds, was considerably lower for patients treated prophylactically (mean 5.4; median 3.1) than for patients treated on demand (mean 26.1; median 21.9). Inhibitors were found in 13% (3/23) and high-titer inhibitors in 4% (1/23) of previously untreated patients with severe hemophilia A. Four previously treated patients with severe hemophilia A developed inhibitors, thereof three high-titer inhibitors (3.3 and 2.5 high-titer inhibitors in 1,000 patient-years). No unexpected adverse effect on the health of the patients, no pdFVIII-related thrombosis, thromboembolic event, or hypersensitivity reaction, and no suspected viral transmission related to pdFVIII were documented.
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Affiliation(s)
| | - Wolfgang Miesbach
- Hemophilia Center, Institute of Transfusion Medicine, University Hospital Frankfurt, Frankfurt/Main, Germany
| | | | | | | | | | - László Nemes
- National Hemophilia Center and Hemostasis Department, Medical Center, Hungarian Defence Forces, Budapest, Hungary
| | | | - Christoph Königs
- Department of Pediatrics, Hemophilia Center, Goethe University, University Hospital Frankfurt, Frankfurt/Main, Germany
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Tiede A, Giangrande P, Teitel J, Amano K, Benson G, Nemes L, Jiménez-Yuste V, d'Oiron R, Benchikh El Fegoun S, Kessler CM. Clinical evaluation of bleeds and response to haemostatic treatment in patients with acquired haemophilia: A global expert consensus statement. Haemophilia 2019; 25:969-978. [PMID: 31517435 DOI: 10.1111/hae.13844] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/30/2019] [Accepted: 08/19/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND Acquired haemophilia (AH) is a rare bleeding disorder with significant morbidity and mortality. Most patients initially present to physicians without experience of the disease, delaying diagnosis and potentially worsening outcomes. Existing guidance in AH is limited to clinical opinion of few experts and does not address monitoring bleeds in specific anatomical locations. AIM Derive consensus from a large sample of experts around the world in monitoring bleeding patients with AH. METHODS Using the Delphi methodology, a structured survey, designed to derive consensus on how to monitor bleeding patients with AH, was developed by a steering committee for completion by a group of haematologists with an interest in AH. Consensus was defined as ≥75% agreement with a given survey statement. After three rounds of survey refinement, a final list of consensus statements was compiled. RESULTS Thirty-six global specialists in AH participated. The participants spanned 20 countries and had treated a median of 12.0 (range, 1-50) patients with AH within the preceding 5 years. Consensus was achieved in all items after three survey rounds. In addition to statements on general management of bleeding patients, consensus statements in the following areas were presented: urinary tract, gastrointestinal tract, muscles, skin, joints, nose, pharynx, mouth, intracranial and postpartum. CONCLUSIONS Here, we present consensus statements derived from a broad sample of global specialists to address monitoring of location-specific bleeds and evaluating efficacy of bleeding treatment in patients with AH. These statements could be applied in practice by treating physicians and validated by individual population surveys.
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Affiliation(s)
| | | | - Jerome Teitel
- St Michael's Hospital, University of Toronto, Toronto, ON, Canada
| | | | | | | | | | - Roseline d'Oiron
- Centre de Référence de l'Hémophilie et des Maladies Hémorragiques Constitutionnelles rares, Hôpitaux Universitaires Paris Sud-APHP-Hôpital Bicêtre, Le Kremlin-Bicêtre, France
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5
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Gruppo RA, Malan D, Kapocsi J, Nemes L, Hay CRM, Boggio L, Chowdary P, Tagariello G, von Drygalski A, Hua F, Scaramozza M, Arkin S. Phase 1, single-dose escalating study of marzeptacog alfa (activated), a recombinant factor VIIa variant, in patients with severe hemophilia. J Thromb Haemost 2018; 16:1984-1993. [PMID: 30151972 DOI: 10.1111/jth.14247] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Indexed: 11/29/2022]
Abstract
Essentials Marzeptacog alfa (activated) [MarzAA] is a novel variant of activated human factor VII. A phase 1 dose escalation trial of MarzAA was conducted in subjects with severe hemophilia. MarzAA was safe and tolerated at intravenous doses up to 30 μg kg-1 Data observed support further trials for hemophilia patients with inhibitors to factors VIII/IX. SUMMARY Background Marzeptacog alfa (activated) (MarzAA), a new recombinant activated human factor VII (rFVIIa) variant with four amino acid substitutions, was developed to provide increased procoagulant activity and a longer duration of action in people with hemophilia. Objectives To investigate the safety, tolerability, immunogenicity, pharmacokinetics (PK) and pharmacodynamics (PD) of single ascending intravenous bolus doses of MarzAA in non-bleeding patients with congenital hemophilia A or B with or without inhibitors. Methods This international, phase 1, open-label study (NCT01439971) enrolled males aged 18-64 years with severe hemophilia A or B, with or without FVIII or FIX inhibitors. Subjects were assigned to single-dose MarzAA cohorts (0.5, 4.5, 9, 18 or 30 μg kg-1 ). Blood sampling was performed predose and postdose, and subjects were monitored for 60 days postdose. Safety endpoints included adverse events, vital sign changes, electrocardiograms, laboratory abnormalities, and immunogenicity; secondary endpoints included evaluation of PK and PD. Results Overall, in 25 patients, MarzAA was well tolerated at all dose levels tested, and was not associated with dose-limiting toxicity. No treatment-emergent severe or serious adverse events occurred. MarzAA showed linear dose-response PK across the 4.5-30 μg kg-1 dose range, with a terminal half-life of ⁓ 3.5 h. Dose-dependent shortening of the activated partial thromboplastin time and prothrombin time, and evidence of an increase in peak thrombin as determined with a thrombin generation assay, were observed at all doses. Conclusions MarzAA was tolerated at doses up to 30 μg kg-1 . The safety profile and pharmacological effects observed support further clinical trials for the treatment of hemophilic patients with inhibitors.
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Affiliation(s)
- R A Gruppo
- Comprehensive Hemophilia and Thrombosis Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - D Malan
- Phoenix Pharma Pty Ltd, Mount Croix, Port Elizabeth, South Africa
| | - J Kapocsi
- Semmelweis University 1st Department of Medicine, Budapest, Hungary
| | - L Nemes
- National Hemophilia Center and Hemostasis Department, Medical Center of the Hungarian Defense Forces, Budapest, Hungary
| | - C R M Hay
- University Department of Haematology, Manchester Royal Infirmary, Manchester, UK
| | - L Boggio
- Hemophilia and Thrombophilia Center, Rush University Medical Center, Chicago, IL, USA
| | - P Chowdary
- KD Haemophilia and Thrombosis Centre, Royal Free Hospital, London, UK
| | - G Tagariello
- Department of Medicine, Hemophilia Center, Castelfranco Veneto Hospital, Castelfranco, Italy
| | | | - F Hua
- Applied BioMath, Concord, MA, USA
| | - M Scaramozza
- Early Clinical Development, Pfizer Worldwide R&D, Pfizer Inc., Cambridge, MA, USA
| | - S Arkin
- Rare Disease Research Unit, Pfizer Inc., Cambridge, MA, USA
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Gindele R, Selmeczi A, Oláh Z, Ilonczai P, Pfliegler G, Marján E, Nemes L, Nagy Á, Losonczy H, Mitic G, Kovac M, Balogh G, Komáromi I, Schlammadinger Á, Rázsó K, Boda Z, Muszbek L, Bereczky Z. Clinical and laboratory characteristics of antithrombin deficiencies: A large cohort study from a single diagnostic center. Thromb Res 2017; 160:119-128. [PMID: 29153735 DOI: 10.1016/j.thromres.2017.10.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/26/2017] [Accepted: 10/30/2017] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Inherited antithrombin (AT) deficiency is a heterogeneous disease. Due to low prevalence, only a few studies are available concerning genotype-phenotype associations. The aim was to describe the clinical, laboratory and genetic characteristics of AT deficiency in a large cohort including children and to add further laboratory data on the different sensitivity of functional AT assays. PATIENTS AND METHODS Non-related AT deficient patients (n=156) and their family members (total n=246) were recruited. Clinical and laboratory data were collected, the mutation spectrum of SERPINC1 was described. Three different AT functional assays were explored. RESULTS Thirty-one SERPINC1 mutations including 11 novel ones and high mutation detection rate (98%) were detected. Heparin binding site deficiency (type IIHBS) was the most frequent (75.6%) including AT Budapest3 (ATBp3), AT Padua I and AT Basel (86%, 9% and 4% of type IIHBS, respectively). Clinical and laboratory phenotypes of IIHBS were heterogeneous and dependent on the specific mutation. Arterial thrombosis and pregnancy complications were the most frequent in AT Basel and AT Padua I, respectively. Median age at the time of thrombosis was the lowest in ATBp3 homozygotes. The functional assay with high heparin concentration and pH7.4 as assay conditions had low (44%) sensitivity for ATBp3 and it was insensitive for AT Basel and Padua I. CONCLUSION Type IIHBS deficiencies behave differently in clinical and laboratory phenotypes from each other and from other AT deficiencies. Heparin concentration and pH seem to be the key factors influencing the sensitivity of AT functional assays to IIHBS.
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Affiliation(s)
- Réka Gindele
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Anna Selmeczi
- Thrombosis and Haemostasis Center, Clinical Center, University of Debrecen, Debrecen, Hungary; National Haemophilia Center and Haemostasis Department, State Health Center, Budapest, Hungary
| | - Zsolt Oláh
- Thrombosis and Haemostasis Center, Clinical Center, University of Debrecen, Debrecen, Hungary
| | - Péter Ilonczai
- Thrombosis and Haemostasis Center, Clinical Center, University of Debrecen, Debrecen, Hungary
| | - György Pfliegler
- Division of Rare Diseases, Department of Internal Medicine, Clinical Center, University of Debrecen, Debrecen, Hungary
| | - Erzsébet Marján
- Department of Pediatrics, A. Jósa Teaching Hospital, Nyíregyháza, Hungary
| | - László Nemes
- National Haemophilia Center and Haemostasis Department, State Health Center, Budapest, Hungary
| | - Ágnes Nagy
- Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Hajna Losonczy
- Department of Internal Medicine, University of Pécs, Pécs, Hungary
| | - Gorana Mitic
- Institute of Laboratory Medicine, Clinical Centre of Vojvodina, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Mirjana Kovac
- Blood Transfusion Institute of Serbia, Belgrade, Serbia
| | - Gábor Balogh
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - István Komáromi
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ágota Schlammadinger
- Thrombosis and Haemostasis Center, Clinical Center, University of Debrecen, Debrecen, Hungary
| | - Katalin Rázsó
- Thrombosis and Haemostasis Center, Clinical Center, University of Debrecen, Debrecen, Hungary
| | - Zoltán Boda
- Thrombosis and Haemostasis Center, Clinical Center, University of Debrecen, Debrecen, Hungary
| | - László Muszbek
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsuzsanna Bereczky
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
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Lissitchkov T, Rusen L, Georgiev P, Windyga J, Klamroth R, Gercheva L, Nemes L, Tiede A, Bichler J, Knaub S, Belyanskaya L, Walter O, Pasi KJ. PK-guided personalized prophylaxis with Nuwiq®(human-cl rhFVIII) in adults with severe haemophilia A. Haemophilia 2017; 23:697-704. [DOI: 10.1111/hae.13251] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2017] [Indexed: 11/27/2022]
Affiliation(s)
- T. Lissitchkov
- Department of Clinical Haematology in Haemorrhagic Diathesis and Anaemia; Specialized Hospital for Active Treatment “Joan Pavel”; Sofia Bulgaria
| | | | - P. Georgiev
- Clinic of Haematology; University Multiprofile Hospital for Active Treatment “Sveti Georgi” and Medical University; Plovdiv Bulgaria
| | - J. Windyga
- Department of Disorders of Haemostasis and Internal Medicine; Institute of Haematology and Transfusion Medicine; Warsaw Poland
| | - R. Klamroth
- Department for Internal Medicine, Vascular Medicine and Haemostaseology; Vivantes Klinikum im Friedrichshain; Berlin Germany
| | - L. Gercheva
- Clinic of Clinical Haematology; Multiple Hospital for Active Treatment “Sveta Marina”; Varna Bulgaria
| | - L. Nemes
- Medical Centre; Hungarian Defence Forces; National Haemophilia Centre; Budapest Hungary
| | - A. Tiede
- Clinic for Haematology, Haemostaseology, Oncology and Stem Cell Transplantation; Hannover Medical School; Hannover Germany
| | | | - S. Knaub
- Octapharma AG; Lachen Switzerland
| | | | | | - K. J. Pasi
- The Royal London Hospital; Barts and the London School of Medicine and Dentistry; London UK
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8
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Nemes L, Blatny J, Klukowska A, Spasova M, Trakymiene SS, Serban M. Haemophilia care in Central and Eastern Europe: challenges and ways forward from clinicians' perspective. Haemophilia 2015; 21:e419-21. [PMID: 26058450 DOI: 10.1111/hae.12706] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2015] [Indexed: 01/31/2023]
Affiliation(s)
- L Nemes
- National Haemophilia Center and Haemostasis Department, State Health Center, Budapest, Hungary
| | - J Blatny
- Department of Paediatric Haematology, Children's University Hospital, Brno, Czech Republic
| | - A Klukowska
- Department of Pediatrics, Hematology and Oncology, Medical University, Warsaw, Poland
| | - M Spasova
- Department of Pediatrics, University Multiprofile Hospital for Active Treatment "Sveti Georgi", Plovdiv, Bulgaria
| | - S Saulyte Trakymiene
- Children's Hospital, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania
| | - M Serban
- Louis Turcanu, Timisoara, Romania
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9
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Nemes L. [The return of clinical ethics]. Lege Artis Med 2014; 24:386-392. [PMID: 25272569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Abstract
Measurements of R and Q branch a-type pure rotational transitions in the frequency range from 8 GHz to 220 GHz are reported for ketene-d1 and ketene-d2. The microwave and millimeter wave transitions were analysed in terms of Watson’s reduced Hamiltonian, including the sextic terms HKJ and HJK. The values of the inertial defect and the τ defect obtained from the centrifugal distortion analysis are in accord with the planar model for the ketene molecule.
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Affiliation(s)
- László Nemes
- Physikalisch-Chemisches Institut, Justus Liebig-Universität Giessen
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11
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Gelhorn H, Merikle E, Krishnan S, Nemes L, Leissinger C, Valentino L. Physician preferences for medication attributes for the prophylactic treatment of patients with severe haemophilia A with inhibitors to factor VIII. Haemophilia 2012; 19:119-25. [PMID: 23005041 DOI: 10.1111/hae.12011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2012] [Indexed: 11/30/2022]
Abstract
Prophylaxis may be beneficial for patients with severe haemophilia A who have developed inhibitors to factor VIII. The aim of this study was to determine physicians' preferences for medication attributes in the prophylactic treatment of this patient population. Haematologists from Europe (EU) and the United States (US) participated in a discrete choice exercise to explore their preferences for medication attributes (efficacy, cost, scientific evidence, dosing frequency and administration time) associated with prophylaxis for severe haemophilia A in patients with inhibitors to factor VIII. Physicians' preferences for medication attributes were assessed through completion of 25 trade-off tasks that included a choice between two hypothetical medications each comprised of one randomized level of each medication attribute. Participants also completed a sociodemographic questionnaire. Data were analysed using a random effects logit model. Participants (N = 36: US = 19; EU = 17) were 80.6% men, had a mean of 19.8 years (SD ± 8.1) [range 6-35] of practice experience. The physicians treated an average of 5.7 (± 5.5) patients with severe haemophilia A and inhibitors per month and reported treating 36.2% of these patients prophylactically. The most important medication attributes for prophylactic treatment were efficacy [Relative Importance (RI) = 35.0%] and scientific evidence (RI = 34.1%), whereas treatment cost (12.0%), dosing frequency (10.8%) and administration time (8.2%) were less important. Results were similar across the EU and US. Efficacy and scientific evidence are the primary considerations for physicians' choice of prophylactic medications for use in this patient population.
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Affiliation(s)
- H Gelhorn
- United BioSource Corporation, Bethesda, MD, USA.
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12
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Tengborn L, Baudo F, Huth-Kühne A, Knoebl P, Lévesque H, Marco P, Pellegrini F, Nemes L, Collins P. Pregnancy-associated acquired haemophilia A: results from the European Acquired Haemophilia (EACH2) registry. BJOG 2012; 119:1529-37. [DOI: 10.1111/j.1471-0528.2012.03469.x] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Schramm W, Gringeri A, Ljung R, Berger K, Crispin A, Bullinger M, Giangrande PLF, Von Mackensen S, Mantovani LG, Nemes L, Serban M. Haemophilia care in Europe: the ESCHQoL study. Haemophilia 2012; 18:729-37. [PMID: 22639833 DOI: 10.1111/j.1365-2516.2012.02847.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2012] [Indexed: 11/30/2022]
Abstract
The aim of this study was to determine the clinical conditions of patients with haemophilia within Europe as recommended by the European Commission. In this multicentre, cross-sectional, ambispective study, conducted within 21 European countries patients' clinical data were collected, amongst others haemophilia type, severity, treatment pattern, use of factor products, bleeding, orthopaedic joint scores and infections. A total of 1400 patients, 84.3% with haemophilia A and 15.7% with haemophilia B were enrolled by 42 centres between 2004 and 2006. Thereof, 417 were children (30.0%) and 983 were adults (70.0%). About 70% of patients had severe factor deficiency (<1%). More than half of the adults were carriers of chronic infections (12.6% HIV, 55.8% HCV), compared to only 3.8% children (no HIV, 2.9% HCV). Patients were grouped according to per capita amount of clotting factor used in patients' region of residence in 2005: region 1: >5 IU; region 2: 2-5 IU; region 3: <2 IU. Paediatric and adult patients in region 3 had median numbers of three and eight joint bleeds, respectively, with worse joint scores compared to region 1 with zero and one bleed. Prophylactic therapy was used in only 31.3% children and 8.9% adults with severe haemophilia in region 3 compared to 93.7% and 54.1%, respectively, in region 1. Statistical analysis revealed that residence in areas with low factor consumption/availability is the most prominent risk factor for joint disease. Access of European patients with haemophilia to optimal care with safe factor VIII concentrates is limited and depends on the region of residence.
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Affiliation(s)
- W Schramm
- Department of Transfusion Medicine and Haemostasis, University Hospital of Munich, Munich, Germany.
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Astermark J, Makris M, Mauser-Bunschoten E, Nemes L, D'oiron R, Oldenburg J, Ingerslev J. Malignant disease in the haemophilic population: moving towards a management consensus? Haemophilia 2012; 18:664-71. [DOI: 10.1111/j.1365-2516.2012.02846.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2012] [Indexed: 12/12/2022]
Affiliation(s)
- J. Astermark
- Centre for Thrombosis and Hemostasis, Skåne University Hospital Malmö; Malmö; Sweden
| | - M. Makris
- Department of Cardiovascular Science; University of Sheffield, Royal Hallamshire Hospital; Sheffield; UK
| | - E. Mauser-Bunschoten
- Van Creveldkliniek and Hematology University Medical Center Utrecht; Utrecht; The Netherlands
| | - L. Nemes
- National Haemophilia Centre and Haemostasis Department; State Health Centre; Budapest; Hungary
| | - R. D'oiron
- Haemophilia Centre, AP-HP Bicêtre Hospital, Paris-XI University; Le Kremlin-Bicêtre; Paris; France
| | - J. Oldenburg
- Institute of Experimental Hematology and Transfusion Medicine, University Clinic; Bonn; Germany
| | - J. Ingerslev
- Kings College London School of Medicine; London; UK
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15
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Knoebl P, Marco P, Baudo F, Collins P, Huth-Kühne A, Nemes L, Pellegrini F, Tengborn L, Lévesque H. Demographic and clinical data in acquired hemophilia A: results from the European Acquired Haemophilia Registry (EACH2). J Thromb Haemost 2012; 10:622-31. [PMID: 22321904 DOI: 10.1111/j.1538-7836.2012.04654.x] [Citation(s) in RCA: 322] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Acquired hemophilia A (AHA) is a rare autoimmune disease caused by autoantibodies against coagulation factor VIII and characterized by spontaneous hemorrhage in patients with no previous family or personal history of bleeding. Although data on several AHA cohorts have been collected, limited information is available on the optimal management of AHA. OBJECTIVES The European Acquired Hemophilia Registry (EACH2) was established to generate a prospective, large-scale, pan-European database on demographics, diagnosis, underlying disorders, bleeding characteristics, treatment and outcome of AHA patients. RESULTS Five hundred and one (266 male, 235 female) patients from 117 centers and 13 European countries were included in the registry between 2003 and 2008. In 467 cases, hemostasis investigations and AHA diagnosis were triggered by a bleeding event. At diagnosis, patients were a median of 73.9 years. AHA was idiopathic in 51.9%; malignancy or autoimmune diseases were associated with 11.8% and 11.6% of cases. Fifty-seven per cent of the non-pregnancy-related cases were male. Four hundred and seventy-four bleeding episodes were reported at presentation, and hemostatic therapy initiated in 70.5% of patients. Delayed diagnosis significantly impacted treatment initiation in 33.5%. Four hundred and seventy-seven patients underwent immunosuppression, and 72.6% achieved complete remission. CONCLUSIONS Representing the largest collection of consecutive AHA cases to date, EACH2 facilitates the analysis of a variety of open questions in AHA.
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Affiliation(s)
- P Knoebl
- Division of Hematology and Hemostasis, Department of Medicine 1, Medical University of Vienna, Vienna, Austria.
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Parigger CG, Woods AC, Keszler A, Nemes L, Hornkohl JO. Titanium monoxide spectroscopy following laser-induced optical breakdown. ACTA ACUST UNITED AC 2012. [DOI: 10.1063/1.4739915] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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17
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de Paula EV, Kavakli K, Mahlangu J, Ayob Y, Lentz SR, Morfini M, Nemes L, Šalek SZ, Shima M, Windyga J, Ehrenforth S, Chuansumrit A. Recombinant factor VIIa analog (vatreptacog alfa [activated]) for treatment of joint bleeds in hemophilia patients with inhibitors: a randomized controlled trial. J Thromb Haemost 2012; 10:81-9. [PMID: 22470921 DOI: 10.1111/j.1538-7836.2011.04549.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND A recombinant factor VIIa analog (NN1731; vatreptacog alfa [activated]) was developed to provide safe, rapid and sustained resolution of bleeds in patients with hemophilia and inhibitors. PATIENTS/METHODS This global, prospective, randomized, double-blinded, active-controlled, dose-escalation trial evaluated and compared one to three doses of vatreptacog alfa at 5, 10, 20, 40, and 80 lg kg(-1) with one to three doses of recombinant FVIIa (rFVIIa) at 90 lg kg(-1) in the treatment of acute joint bleeds in hemophilia patients with inhibitors. The primary endpoint comprised adverse events; secondary endpoints were evaluations of immunogenicity, pharmacokinetics, and efficacy. RESULTS AND CONCLUSIONS Overall, 96 joint bleeds in 51 patients (> 12 years of age) were dosed. Vatreptacog alfa was well tolerated, with a low frequency of adverse events. No immunogenic or thrombotic events related to vatreptacog alfa were reported. A high efficacy rate of vatreptacog alfa in controlling acute joint bleeds was observed; 98% of bleeds were controlled within 9 h of the initial dose in a combined evaluation of 20–80 lg kg(-1) vatreptacog alfa. The efficacy rate observed for rFVIIa (90%) is consistent with data from published clinical trials. The trial was not powered to compare efficacy, and further trials are needed to investigate the efficacy of vatreptacog alfa as compared with that of rFVIIa. The trial was registered at ClinicalTrials.gov ( REGISTRATION NUMBER NCT00486278).
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Affiliation(s)
- Erich V de Paula
- Hematology and Hemotherapy Center, University of Campinas, São Paulo, Brazil.
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Fábri C, Mátyus E, Furtenbacher T, Nemes L, Mihály B, Zoltáni T, Császár AG. Variational quantum mechanical and active database approaches to the rotational-vibrational spectroscopy of ketene, H2CCO. J Chem Phys 2011; 135:094307. [DOI: 10.1063/1.3625404] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bidlingmaier C, Kurnik K, Escuriola-Ettingshausen C, Jager R, Klamroth R, Male C, Marosi A, Nemes L, von Stackelberg A, Kreuz W. Immune tolerance induction with a factor VIII concentrate containing von Willebrand factor (Haemoctin SDH®) in 14 patients with severe haemophilia A. Haemophilia 2011; 17:e837-40. [PMID: 21649797 DOI: 10.1111/j.1365-2516.2011.02577.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Mohl A, Boda Z, Jager R, Losonczy H, Marosi A, Masszi T, Nagy E, Nemes L, Obser T, Oyen F, Radványi G, Schlammadinger Á, Szélessy ZS, Várkonyi A, Vezendy K, Vilimi B, Schneppenheim R, Bodó I. Common large partial VWF gene deletion does not cause alloantibody formation in the Hungarian type 3 von Willebrand disease population. J Thromb Haemost 2011; 9:945-52. [PMID: 21362127 DOI: 10.1111/j.1538-7836.2011.04250.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Type 3 von Willebrand disease (VWD) is an autosomal recessive bleeding disorder, characterized by virtually undetectable plasma von Willebrand factor (VWF) and consequently reduced plasma factor VIII levels. Genetic mutations responsible for type 3 VWD are very heterogeneous, scattered throughout the VWF gene and show high variability among different populations. METHODS Twenty-five severe VWD patients were studied by direct sequencing of the 51 coding exons of the VWF gene. The total number of VWD type 3 families in Hungary is 24, of which 23 were investigated. RESULTS Fifteen novel mutations were identified in 31 alleles, five being nonsense mutations (p.Q1238X, p.Q1898X, p.Q1931X, p.S2505X and p.S2568X), four small deletions and insertions resulting in frame shifts (c.1992insC, c.3622delT, c.5315insGA and c.7333delG), one a large partial deletion (delExon1-3) of the 5'-region, four candidate missense mutations (p.C35R, p.R81G, p.C295S, p.C623T) and one a candidate splice site mutation (c.1730-10C>A). Six previously described mutations were detected in 17 alleles, including the repeatedly found c.2435delC, p.R1659X and p.R1853X. Only one patient developed alloantibodies to VWF, carrying a homozygous c.3622delT. CONCLUSION We report the genetic background of the entire Hungarian type 3 VWD population. A large novel deletion, most probably due to a founder effect, seems to be unique to Hungarian type 3 VWD patients with high allele frequency. In contrast to previous reports, none of the five patients homozygous for the large partial deletion developed inhibitors to VWF. This discrepancy raises the possibility of selection bias in some of the reports.
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Affiliation(s)
- A Mohl
- 2nd Department of Pediatrics, Semmelweis University, Budapest, Hungary
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21
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Goulay F, Nemes L, Schrader PE, Michelsen HA. Spontaneous emission from C2(d3Πg) and C3(A1Πu) during laser irradiation of soot particles. Mol Phys 2010. [DOI: 10.1080/00268971003627824] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Recht M, Nemes L, Matysiak M, Manco-Johnson M, Lusher J, Smith M, Mannucci P, Hay C, Abshire T, O'Brien A, Hayward B, Udata C, Roth DA, Arkin S. Clinical evaluation of moroctocog alfa (AF-CC), a new generation of B-domain deleted recombinant factor VIII (BDDrFVIII) for treatment of haemophilia A: demonstration of safety, efficacy, and pharmacokinetic equivalence to full-length recombinant factor VIII. Haemophilia 2009; 15:869-80. [PMID: 19473411 DOI: 10.1111/j.1365-2516.2009.02027.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BDDrFVIII is a B-domain deleted recombinant factor VIII (rFVIII) product for haemophilia A. Manufacture uniquely includes purification chromatography by synthetic-affinity ligand rather than murine-based monoclonal antibody, as well as an albumin-free cell culture process. BDDrFVIII was studied in 204 patients, including 62 subjects <16 years old, in two studies. A double-blind, randomized, pharmacokinetic (PK) crossover study, utilizing a central laboratory assay (one-stage (OS)) for both drug potency assignment and plasma FVIII-activity measurements, demonstrated that BDDrFVIII was PK-equivalent to a full-length rFVIII. Favourable efficacy and safety were observed: during defined routine prophylaxis in a patient population significant for preexisting target joints, nearly half (45.7%) of patients had no bleeding, and a low-annualized bleed rate (ABR) was achieved (median 1.9); 92.5% of haemorrhages (n = 187) required < or =2 infusions. Three subjects (1.5%, across both studies) developed de novo inhibitors (low-titre, transient), and the primary safety endpoint, based on a prospective Bayesian analysis, demonstrated the absence of neoantigenicity for BDDrFVIII. The PK-equivalence, based on central testing to align test and reference articles, and the novel Bayesian analysis of inhibitor safety in these investigations reflect robust experimental designs with relevance to future studies. This extensive dataset demonstrates the safety and efficacy of BDDrFVIII for haemophilia A.
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Affiliation(s)
- M Recht
- Hemophilia Treatment Center, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA.
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23
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24
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Moravcsik B, Nemes L, Zsiros L. [Use of recombinant, activated Factor VII in the treatment and prevention of bleeding complications in two female patients suffering from congenital XI factor deficiency during orthopedic and traumatology intervention. Case reports]. Orv Hetil 2008; 149:1565-8. [PMID: 18687576 DOI: 10.1556/oh.2008.28158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The authors describe the treatment of the bleeding complications in two female patients suffering from a rare, inherited coagulation disorder; Factor XI deficiency after having major orthopaedic and traumatologic operations by activated, recombinant Factor VII (NovoSeven, Novo Nordisk, Bagsvaerd, Denmark). In the first case a total hip arthroplasty was performed because of severe, left-sided osteoarthritis. Despite of the standard protocol prescribed by the National Haemophilia Centre, severe bleeding complication occurred. The authors describe the pattern of the postoperative bleeding, the difficult decision on reoperation and the experience with activated, recombinant Factor VII, as a rescue treatment. In the second case the patient had a right femoral head fracture after falling. In her anamnesis it was known that she had severe bleeding complications despite factor substitution. After discussion with the National Haemophilia Centre operation was made by the use of NovoSeven.
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Affiliation(s)
- Bence Moravcsik
- Allami Egészségügyi Központ Baleseti Sebészeti és Kézsebészeti Osztály Budapest Budafoki út 15. 1111, Hungary.
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Nemes L, Lissitchkov T, Dobaczewski G, Klukowska A, Komrska V, Zimmermann R, Auerswald G, Engl W, Abbühl B, Pavlova BG, Ehrlich HJ. Pharmacokinetics, efficacy and safety of IMMUNATE solvent/detergent (IMMUNATE S/D) in previously treated patients with severe hemophilia A: results of a prospective, multicenter, open-label phase III study. Acta Haematol 2008; 119:89-97. [PMID: 18305381 DOI: 10.1159/000118628] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2007] [Accepted: 12/11/2007] [Indexed: 11/19/2022]
Abstract
BACKGROUND IMMUNATE Solvent/Detergent (S/D) is a plasma-derived, human factor VIII (FVIII)/von Willebrand factor (VWF) complex subjected to S/D and vapor heat treatment. METHODS This prospective clinical study evaluated the pharmacokinetics (PK) (compared to IMMUNATE), efficacy and safety of IMMUNATE S/D in 56 previously treated patients with severe hemophilia A. Subjects received IMMUNATE S/D either on-demand (47/56), as a prophylactic regimen (49/56), or both (40/56). RESULTS IMMUNATE and IMMUNATES/D were equivalent with respect to the FVIII and VWF PK parameters assessed. Bleeding episodes (623) were reported in 47/56 subjects. For 89% of episodes, subjects required only 1 infusion with a mean dose of 29.6 IU/kg and 96% of episodes had an excellent or good response. The duration of prophylaxis ranged from 0.1 to 5.2 months. The median number of bleeds per month in subjects on prophylaxis was 0 (range 0-10). No FVIII inhibitory antibodies were observed in 56 subjects after 2,646 treatment exposure days. No related serious adverse events were reported. CONCLUSION The introduction of S/D treatment did not alter the PK characteristics and function of VWF and FVIII molecules in IMMUNATE S/D which is effective and safe for treatment of bleeding episodes, management of surgical procedures and prophylaxis.
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Affiliation(s)
- L Nemes
- National Medical Center, National Hemophilia Center, Budapest, Hungary
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26
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Bors A, Andrikovics H, Szilvási A, Illés Z, Marosi A, Nemes L, Tordai A. O11 Genetic analysis of the coagulation factor VIII and IX genes in Hungarian families with haemophilia. Blood Rev 2007. [DOI: 10.1016/s0268-960x(07)70029-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mohl A, Boda Z, Jager R, Losonczy H, Marosi A, Masszi T, Nagy E, Nemes L, Obser T, Oyen F, Radványi G, Sallai K, Schlammadinger Á, Szélessy Z, Vezendy K, Schneppenheim R, Bodó I. P061 Type 3 von Willebrand disease in Hungary: A partial large deletion is the most common genetic defect. Blood Rev 2007. [DOI: 10.1016/s0268-960x(07)70136-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Nemes L, Keszler AM, Parigger CG, Hornkohl JO, Michelsen HA, Stakhursky V. Spontaneous emission from the C3 radical in carbon plasma. Appl Opt 2007; 46:4032-40. [PMID: 17571143 DOI: 10.1364/ao.46.004032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Spontaneous emission measurements are discussed for the Swings transitions of the C(3) radical in laser-generated graphite plasma, and the spectroscopy of the C(3) radical in carbon vapor and plasma is summarized. A review is given of some theoretical calculations and emission spectroscopic investigations are presented. Time-averaged, laser-induced optical breakdown spectra are reported from Nd:YAG laser generated graphite microplasma. In 200-300 Torr of argon and helium, and depending on the specific experimental configuration, a weak emission continuum is observed centered at 400 nm when using a laser fluence of typically 1 J/cm(2). Such continua were not detected in our previous experiments using focused laser radiation. The possibilities for the origin of this continuum are considered.
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Affiliation(s)
- László Nemes
- Laboratory for Laser Spectroscopy, Chemical Research Center of the Hungarian Academy of Sciences, Budapest, Hungary
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Abstract
We report time-averaged and time-resolved emission spectra subsequent to laser-induced optical breakdown of aluminum in laboratory air and in hydrogen gas. The microplasma generated by nominal 10 ns IR laser radiation shows Stark-broadened and shifted atomic lines. An analysis of the H(alpha) and H(beta) Balmer series lines and selected aluminum lines allows one to determine electron number density in the range of 0.01 - 10 x 10(18) cm(-3) early in the plasma decay. Atomic and molecular features are investigated for diagnostic applications in laser material processing.
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Nemes L, Lissitchkov T, Klukowska A, Dobaczewski G, Komrska V, Zimmermann R, Auerswald G, Engl W, Pavlova B, Abbühl B, Ehrlich HJ. Evaluation of pharmacokinetics, efficacy and safety of Immunate�solvent detergent in previously treated patients with severe haemophilia A. Haemophilia 2007; 13:9-11. [PMID: 17212718 DOI: 10.1111/j.1365-2516.2006.01412.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Immunate Solvent Detergent (S/D) is a plasma derived, purified, human factor VIII (FVIII) - von Willebrand factor (VWF) complex subjected to two virus inactivation/removal processes: S/D and vapor heat treatment. This prospective, multicentre, three-part clinical study evaluated the pharmacokinetics (in comparison to the predecessor product Immunate), efficacy and safety of Immunate S/D in 56 previously treated patients with severe haemophilia A. Subjects received Immunate S/D on-demand, as a prophylactic regimen or both. The results of the pharmacokinetic population demonstrate that Immunate and Immunate S/D were equivalent with respect to the FVIII - and to the retrospectively VWF - parameters assessed. A total of 623 bleeding episodes were reported in 47/56 subjects. The duration of prophylaxis ranged from 0.1-5.2 months with a total of 175.6 months. The median number of bleeds per month in subjects on prophylaxis was 0 (range 0-10). Ninety-six percent of bleeding episodes were rated as having an excellent or good response. For most bleeding episodes (89%), subjects required only one infusion with a mean dose of 29.6 IU kg(-1). No FVIII inhibitory antibodies were observed in any subject. No related serious adverse events were reported. Thus, the introduction of S/D treatment did not alter the PK characteristics and function of VWF and FVIII molecules of Immunate S/D which is effective and safe for treatment of bleeding episodes, management of surgical procedures, and prophylaxis.
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Affiliation(s)
- L Nemes
- National Medical Center, National Hemophilia Center, Budapest, Hungary
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Skaliczki G, Bartha L, Sólyom L, Nemes L. [Total knee arthroplasty in hemophilic arthropathy]. Orv Hetil 2006; 147:945-8. [PMID: 16776050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The case of a bilateral total knee arthroplasty in a hemophiliac patient is presented below. Postoperative blood loss, required factor substitution, complications after surgery were observed. Functional results were evaluated using the Hospital for Special Surgery Score. The pathophysiology of hemophilic arthropathy is reviewed also. The arthroplasties were performed using factor substitution and a tourniquet, posterior stabilized prosthesis was implanted on both sides. The average postoperative blood-loss was 700 ml. After the first procedure hemarthrosis occurred, other complications were not observed. Follow-up time was 164 weeks in the first case and 112 in the second. The average improvement in Hospital for Special Surgery Score was 34 points reaching 97,5 points postoperatively. Range of movement was 0-120 degrees on the right and 0-135 degrees on the left side. The authors emphasize the importance of the adequate hematological and anaesthetical background when performing surgery in a hemophiliac patient.
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Ibrányi E, Nemes L. [Treatment of chronic hepatitis C in haemophilia patients]. Orv Hetil 2006; 147:61-3. [PMID: 16509214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Adults with inherited disorders of coagulation have one of the highest prevalence rates of hepatitis C among known risk groups. Few data are available on the use of combination therapy with interferon and ribavirin in this population. The patients had HCV RNA detectable in serum by polymerase chain reaction, elevated serum aminotransferase (more than 100 U/l). Liver biopsy was not performed. The treatment with interferon alfa 2 b 3 x 3 million units weekly and ribavirin 800 mg/day for 48 weeks. 19 patients were treated and the sustained virological response was 40% (8 of 19). Hemoglobin mean values decreased during treatment, nevertheless all patients were able to finish treatment with small dose adjustments. The re-treatment of 4 nonrespondent patients (interferon and ribavirin) treated again with Peg-interferon alfa 2 b plus ribavirin proved ineffective too.
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Affiliation(s)
- Endre Ibrányi
- Fovárosi Szent László Kórház, IV. Fertozo Belgyógyászat, Budapest
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Molnár Z, Farkas V, Nemes L, Reusz GS, Szabó AJ. Hyponatraemic seizures resulting from inadequate post-operative fluid intake following a single dose of desmopressin. Nephrol Dial Transplant 2005; 20:2265-7. [PMID: 16014348 DOI: 10.1093/ndt/gfh960] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Zoltán Molnár
- First Department of Pediatrics, Semmelweis University, Budapest, Bókay János u. 53, H-1083 Budapest, Hungary.
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Nemes L, Keszler AM, Hornkohl JO, Parigger CG. Laser-induced carbon plasma emission spectroscopic measurements on solid targets and in gas-phase optical breakdown. Appl Opt 2005; 44:3661-7. [PMID: 15989040 DOI: 10.1364/ao.44.003661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We report measurements of time- and spatially averaged spontaneous-emission spectra following laser-induced breakdown on a solid graphite/ambient gas interface and on solid graphite in vacuum, and also emission spectra from gas-phase optical breakdown in allene C3H4 and helium, and in CO2 and helium mixtures. These emission spectra were dominated by CII (singly ionized carbon), CIII (doubly ionized carbon), hydrogen Balmer beta (Hbeta), and Swan C2 band features. Using the local thermodynamic equilibrium and thin plasma assumptions, we derived electron number density and electron temperature estimates. The former was in the 10(16) cm(-3) range, while the latter was found to be near 20000 K. In addition, the vibration-rotation temperature of the Swan bands of the C2 radical was determined to be between 4500 and 7000 K, using an exact theoretical model for simulating diatomic emission spectra. This temperature range is probably caused by the spatial inhomogeneity of the laser-induced plasma plume. Differences are pointed out in the role of ambient CO2 in a solid graphite target and in gas-phase breakdown plasma.
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Affiliation(s)
- László Nemes
- Laboratory for Laser Spectroscopy, Chemical Research Center, Hungarian Academy of Sciences, Pusztaszeri ut 59-67, H-1025 Budapest, Hungary.
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35
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Abstract
A new method is presented for computation of diatomic rotational line strengths, or Hönl-London factors. The traditional approach includes separately calculating line positions and Hönl-London factors and assigning parity labels. The present approach shows that one merely computes the line strength for all possible term differences and discards those differences for which the strength vanishes. Numerical diagonalization of the upper and lower Hamiltonians is used, which directly obtains the line positions, Hönl-London factors, total parities, and e/f parities for both heteronuclear and homonuclear diatomic molecules. The FORTRAN computer program discussed is also applicable for calculating n-photon diatomic spectra.
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Affiliation(s)
- James O Hornkohl
- The University of Tennessee Space Institute, 411 B. H. Goethert Parkway, Tullahoma, Tennessee 37388, USA.
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Abstract
The only form of haemophilia treatment that is able to prevent arthropathy and other consequences of bleeding symptoms in patients with severe haemophilia is prophylaxis started at an early age (primary prophylaxis). It is also highly beneficial for the psychological and social wellbeing of patients and their families. Scientific institutions and international organizations such as WHO, the World Federation of Hemophilia (WFH) and the National Haemophilia Foundation (NHF) have recommended that prophylaxis be considered optimum therapy. This paper discusses the barriers to prophylaxis, such as the perceived need, costs and availability, and difficulty of venous access, and describes the authors' experiences with the therapy.
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Affiliation(s)
- P Petrini
- Haemophilia Center, Karolinska Hospital, 171 76 Stockholm, Sweden.
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Ehrenforth S, Nemes L, Mannhalter C, Rosendaal FR, Koder S, Zoghlami-Rintelen C, Scharrer I, Pabinger I. Impact of environmental and hereditary risk factors on the clinical manifestation of thrombophilia in homozygous carriers of factor V:G1691A. J Thromb Haemost 2004; 2:430-6. [PMID: 15009459 DOI: 10.1111/j.1538-7836.2004.00606.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Limited data exist on the clinical manifestations of homozygous factor (F)V:G1691A mutation (FV Leiden) and the impact of environmental and genetic risk factors. OBJECTIVES To assess the contribution of these factors on the thrombophilic phenotype. PATIENTS AND METHODS In a retrospective multicenter cohort study 165 individuals with homozygous FV:G1691A mutation, of whom 129 had previous venous thromboembolism (VTE), were included. To study the role of environmental risk factors, patients were compared by the use of a standardized questionnaire to 165 sex- and age-matched individuals (reference group A); of these, two had previous VTE. To assess the role of genetic risk factors, factor (F)II:G20210A and MTHFR:C677T were determined in individuals homozygous for FV:G1691A and in 177 healthy individuals without previous VTE (reference group B). RESULTS The first VTE occurred significantly earlier in women (median age 25 years) than men (35.5 years). In 81% of women and 29% of men an environmental risk factor was present before first VTE. Oral contraceptives increased the risk of thrombosis 4-fold [odds ratio (OR) 4.0, 95% confidence interval (CI) 1.7, 10.4] in women with homozygous FV:G1691A. Postoperative and post-traumatic VTE as first manifestation occurred in 13% and 15% of surgical/traumatic events in patients and in 0.7% and 1.8% in reference group A, respectively (OR 19.7, 95% CI 2.5, 154 and OR 9.2, 95% CI 1.1, 79.4). Heterozygous FII:G20210A was more prevalent in symptomatic patients (11.7%) compared with reference group B (2.8%, OR 4.6, 95% CI 1.6, 13.2). The prevalence of homozygous MTHFR:C677T genotype was similar in patients and reference group B. CONCLUSIONS Our study supports the concept of thrombophilia as a multifactorial disorder. The knowledge of coexisting factors predisposing to VTE is useful for medical advice for primary and secondary prophylaxis in these patients.
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Affiliation(s)
- S Ehrenforth
- Department of Internal Medicine I, University Hospital Frankfurt, Germany
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Parigger CG, Hornkohl JO, Keszler AM, Nemes L. Measurement and analysis of atomic and diatomic carbon spectra from laser ablation of graphite. Appl Opt 2003; 42:6192-6198. [PMID: 14594084 DOI: 10.1364/ao.42.006192] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Spectra from plasma produced by laser-induced breakdown of graphite were recorded and analyzed to increase our understanding of the way in which carbon nanoparticles are created during Nd:YAG laser ablation of graphite. The effects of various buffer gases were studied. Electron density and temperature were determined from spectra of the first and second ions of atomic carbon. The C2 Swan spectrum was also prominent in most of the measured spectra. Temperature was inferred from each experimental Swan spectrum by determination of the temperature for which a synthetic Swan spectrum best fitted, in the least-squares sense, the measured spectrum.
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Affiliation(s)
- Christian G Parigger
- Center for Laser Applications, The University of Tennessee Space Institute, 411 B. H. Goethert Parkway, Tullahoma, Tennessee 37388, USA.
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Andrikovics H, Klein I, Bors A, Nemes L, Marosi A, Váradi A, Tordai A. Analysis of large structural changes of the factor VIII gene, involving intron 1 and 22, in severe hemophilia A. Haematologica 2003; 88:778-84. [PMID: 12857556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Hemophilia A (HA), the deficiency of coagulation factor VIII (FVIII), is the most common, sex-linked inherited bleeding disorder. The disease is caused by FVIII gene intron 22 inversion in approximately 50% of the patients, and by intron 1 inversion in 5% of the patients with severe HA. Both inversions occur as a result of intrachromosomal recombination between homologous regions, in intron 1 or 22, and their extragenic copy located telomeric to the FVIII gene. The goal of the present study was to analyze the presence of large structural changes in the FVIII gene in patients with severe hemophilia A. DESIGN AND METHODS We studied 104 unrelated, severe HA-patients or obligate carriers for the presence of intron 22 and intron 1 inversions by Southern blotting, long-distance polymerase chain reaction (PCR), and simple PCR. RESULTS We found altered intron 22 restriction profiles by Southern analyses in 58 cases: 43 type 1, 11 type 2 inversions and 4 unusual patterns. Upon further examination of the last 4 cases, large deletions involving intron 22 were demonstrated in two cases. In the remaining two patients extra homologous regions were detected by Southern analysis, and long-distance PCR showed the presence of unaltered intra- and extragenic copies together with one inversion-affected copy, suggesting that an additional intronic fragment participated in the inversion process and was inserted in the genome. During screening for intron 1 inversion among 43 patients, who were intron 22 inversion negative, we identified only wild type individuals. INTERPRETATION AND CONCLUSIONS The relatively large proportion of unusual patterns further supports the observation that the structure of FVIII intron 22 represents a hot spot for large gene rearrangements with various mechanisms, while intron 1 inversion seems to be not common in Hungary.
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Affiliation(s)
- Hajnalka Andrikovics
- Institute of Hematology and Immunology, National Medical Center, Diószegi út 64, Budapest H-1113, Hungary
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Kilián K, Miklós K, Rajczy K, Sipos A, Lengyel L, Nemes L, Petrányi G, Pálóczi K. [Methods of screening for adult celiac disease in patients attending ambulatory care service in immunology]. Orv Hetil 2003; 144:1069-76. [PMID: 12847816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
INTRODUCTION Coeliac disease (gluten sensitive enteropathy) is a very frequent disease appearing in variegated clinical form. In the last decade--concerning the immunogenetic and immunopathological aspects of the disease many of new recognition came to alight. AIM As the disease can lay hidden in its non classical manifesting form for a very long time, authors wished to study the efficacy of screening, which may be introduced for patients attending immunological outpatient care service. PATIENTS, METHODS AND RESULTS In the frame of nation-wide patient care, out of the 200 potential patients sent for immunological check up, various form of coeliac disease was diagnosed in 20 cases. Among these cases there are two--presented for the first time--which are connected to bone marrow transplantation. Based on the immunogenetics and autoantibody serology as well as on small intestine biopsies the following conclusions were made. CONCLUSION 1. Coeliac disease in Hungary is very frequent. Hidden disease should be considered first of all in cases of malabsorption symptoms. 2. Demonstration of autoantibodies on wide-scale palette helps to state the diagnosis based on the systematic auto-immune disease connection. 3. Study of Human Leukocyte Antigen allotype (HLA-DQA1*0501/DQBI*02) applied as marker can considerably support the suspicion of disease. 4. Histology test of the small intestine cannot be omitted.
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Affiliation(s)
- Katalin Kilián
- Országos Gyógyintézeti Központ, Immunológiai és Allergológiai Osztály, Budapest
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Affiliation(s)
- P Holló
- Department Dermato-Venerology, Semmelweis University, Budapest, Hungary.
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Monninger G, Förderer M, Gürtler P, Kalhofer S, Petersen S, Nemes L, Szalay PG, Krätschmer W. Vacuum Ultraviolet Spectroscopy of the Carbon Molecule C3 in Matrix Isolated State: Experiment and Theory. J Phys Chem A 2002. [DOI: 10.1021/jp0142536] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. Monninger
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - M. Förderer
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - P. Gürtler
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - S. Kalhofer
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - S. Petersen
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - L. Nemes
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - P. G. Szalay
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - W. Krätschmer
- Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany, Hasylab at Desy, Notkestrasse 85, D-22603 Hamburg, Germany, Chemical Research Center, Research Laboratory for Materials and Environmental Chemistry, Hungarian Academy of Sciences, Pusztaszeri út 59-67, H-1025 Budapest, Hungary, and Department of Theoretical Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
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Pabinger I, Nemes L, Rintelen C, Koder S, Lechler E, Loreth RM, Kyrle PA, Scharrer I, Sas G, Lechner K, Mannhalter C, Ehrenforth S. Pregnancy-associated risk for venous thromboembolism and pregnancy outcome in women homozygous for factor V Leiden. Hematol J 2002; 1:37-41. [PMID: 11920167 DOI: 10.1038/sj.thj.6200005] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/1999] [Accepted: 09/09/1999] [Indexed: 11/08/2022]
Abstract
INTRODUCTION To evaluate the pregnancy-associated risk of venous thromboembolism and the risk of stillbirth and miscarriage a multicenter, retrospective and controlled study was conducted in women carrying the homozygous factor V Leiden mutation and in an agematched control group of women from the normal population. PATIENTS AND METHODS In 64 homozygous (median age 44 years, range 21-75 years) and in 52 control women from five different centers data on venous thromboembolism and pregnancy outcome were obtained. RESULTS The 64 homozygous women had in total 212 pregnancies, the 52 control women had 118 pregnancies. In homozygous women 65% of pregnancies ended with delivery of a viable infant, 15% with fetal loss (3.3% stillbirth, 12% miscarriage) and 20% by pregnancy termination. In the control women 75% of pregnancies ended with delivery of a viable infant, 12% with fetal loss (1.7% stillbirth, 10% miscarriage) and 13% by pregnancy termination. The differences were statistically not significant. Venous thromboembolism occurred significantly more often in the homozygous women, in 4.2% (9/212) during pregnancy and in 4.7% (10/212) after delivery or pregnancy termination. None of the control women had a thromboembolic episode. CONCLUSION Our data indicate that women with homozygous factor V Leiden have a high probability for a favorable pregnancy outcome. The increased risk for venous thromboembolism during pregnancy and after delivery would favor heparin prophylaxis during and after pregnancy in women homozygous for factor V Leiden.
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Affiliation(s)
- I Pabinger
- I Department of Internal Medicine, Division of Hematology/Blood Coagulation, University Hospital, Vienna, Austria.
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Nemes L. [Not Available]. Luzif Amor 2001; 12:45-52. [PMID: 11638924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
In the forties, the life of Hungarian analysts was broken by two historical turning points. Both critical periods follow first an ascending, then an abruptly falling line. During faschism, psychoanalysis had in Hungary the longest life. At the end of 1944, one quarter of Hungarian analysts became victims of the Hungarian nazis. The year 1945 started with a hope of revival, with the social acceptance of psychoanalysis. After a couple of years, the communist regime disolved the Society, and forced the members into an inner emigration of 15 years.
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Nemes L. [Two historical changes in the vicissitudes of Hungarian psychoanalysts in the forties]. Rev Int Hist Psychanal 2001; 1:255-62. [PMID: 11640262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Between 1940 and 1950, Hungarian history struck two blows at psychoanalysts--as a movement and in their personal lives. The paper relates several episodes from this period and briefly traces the birth and development of the "Budapest School". Between the two world wars, the small group of Hungarian analysts played a relatively important role in the international movement. During the years of Fascism it was in Hungary that psychoanalysis was able to survive the longest. But in 1944, a quarter of all the Hungarian analysts perished. After the war the analysts' activity was notable chiefly for its extensive nature but after a few years the Association was dissolved. The paper describes the analysts' problems and fluctuating fortunes and also their incessant efforts, inspired by the hope of a theoretical and practical renewal of Hungarian psycho-analysis.
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Demeter J, Lelkes G, Nemes L, Kenéz A, Turbucz P, de Châtel R. Familial occurrence of the May-Hegglin anomaly: is the accompanying renal failure part of a new subentity? Ann Hematol 2001; 80:368-71. [PMID: 11475153 DOI: 10.1007/s002770000286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We present two cases of the May-Hegglin anomaly discovered in a patient and one of her two sons. The female patient was known to have proteinuria from the age of 14 and was hospitalized in 1980, at the age of 25 years, because of hypertension and proteinuria (1.5 g/day). Thrombocytopenia was found with an abundance of megakaryocytes in the bone marrow. Both steroid treatment and splenectomy failed to ameliorate the thrombocytopenia, thought to be due to idiopathic thrombocytopenic purpura. Progressive renal failure, secondary hyperparathyroidism and uremic osteodystrophy were diagnosed in 1995. In January 1996, when she was hospitalized because of high-grade fever, we saw giant platelets and prominent blue inclusion bodies in almost all granulocytes in the peripheral blood smear. Electron microscopy confirmed the diagnosis of May-Hegglin anomaly in this patient and one of her sons, who at that time showed thrombocytopenia but no renal disease. Three years later, however, at the age of 15, the affected son was found to develop proteinuria. Coexpression of the May-Hegglin anomaly and renal disease, reported previously in a few other patients, may in fact represent a new subentity.
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Affiliation(s)
- J Demeter
- First Department of Medicine, Semmelweis University Medical School, Budapest, Hungary.
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Klein I, Andrikovics H, Bors A, Nemes L, Tordai A, Váradi A. A haemophilia A and B molecular genetic diagnostic programme in Hungary: a highly informative and cost-effective strategy. Haemophilia 2001; 7:306-12. [PMID: 11380636 DOI: 10.1046/j.1365-2516.2001.00497.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Our aim was to set up a protocol in order to provide carrier and prenatal diagnosis to Hungarian haemophilia A (HA) and B (HB) patients and their relatives. For HA, a combination of direct mutation detection and some indirect marker analyses were used: the detection of the inversion mutation and analysis of three polymorphisms, BclI, IVS13 (CA)n and P39(CA)n. In severe cases, direct mutation detection was performed first. In inversion-negative severe cases and in moderate and mild cases, indirect methods were used. For carrier and prenatal diagnosis in HB, four polymorphisms, DdeI, TaqI, XmnI, and HhaI were examined. Our DNA bank contains samples from 50 HA families (34 severe, 15 moderate and one mild) and seven HB families from different parts of the country. In 100% of the HA cases either the gene inversion and/or at least one of the polymorphisms was found to be informative for carrier or prenatal diagnosis. In the HB cases, an informative marker was found in 95% of the cases (19 of 20). We conclude that these strategies are sufficient to make genetic diagnosis available to almost all HA and HB families in the region. This approach is highly informative and cost-effective, so it can be very useful in countries where direct sequencing of genes for factor VIII and IX is not available for routine diagnosis.
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Affiliation(s)
- I Klein
- Institute of Enzymology of the Hungarian Academy of Sciences, Budapest, Hungary.
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Nemes L, Pitlik E. New protocol for immune tolerance induction in acquired hemophilia. Haematologica 2000; 85:64-8. [PMID: 11187874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Immune tolerance induction (ITI) regimens with human factor VIII concentrates are rarely if ever implemented in adult patients with auto-inhibitors, in contrast to alloantibody suppression, which is used primarily in young children with congenital hemophilia. On the basis of some earlier experience with synchronization of plasma exchange therapy of various autoimmune disorders we have developed a new aggressive protocol for the treatment of patients with acquired factor VIII (FVIII) antibody. We have evaluated the outcome of 14 consecutive nonhemophilic FVIII inhibitor patients treated in a single center with our ITI protocol between 1992 and 1999, comparing them to 6 historical control patients, treated with traditional immunosuppression therapy (steroid +/- cyclophosphamide) between 1988 and 1992. DESIGN AND METHODS Our ITI protocol consists of three weeks of treatment with 1) human FVIII concentrates (30 U/kg/day for the 1st week, 20 U/kg/day for the 2nd, and 15 U/kg/day for the 3rd week), plus 2) iv. cyclophosphamide (200mg/day to a total dose of 2-3 grams), plus 3) methylprednisolone (100 mg/day iv. for one week and than tapering down the dose gradually over the next two weeks). The treatment of acute bleeding episodes in the two groups was not different. High purity and ultra-high purity factor VIII concentrates were used for the ITI. We performed aPTT and mixing tests before and after two hours of incubation, Bethesda inhibitor assay, porcine FVIII cross-reactivity, FVIII:C before and after FVIII administration (recovery), three times a week. The sex ratio and mean age (64 years for the ITI group versus 57 years for the controls), the initial and peak inhibitor titers, and residual FVIII: C values at the diagnosis were similar in the two groups. RESULTS Eradication of the inhibitor occurred in 13/14 patients in the ITI vs. 4/6 patients in the control group. The main difference between the two groups was in the time needed for the complete disappearance of the inhibitor (4.6 weeks for ITI vs. 28.3 weeks for controls). In the ITI group we have observed only two relapses during the relatively long follow-up period (26 months), and in both cases the same re-induction protocol was successful again. No bleeding-related mortality occurred in this group in contrast to that of 33% in the controls. Apart from the well-known adverse effects of glucocorticoid therapy, we have observed only one patient with transient cytopenia. We have not seen any adverse event which could be attributed to the use of FVIII concentrates. INTERPRETATION AND CONCLUSIONS We conclude that the ITI protocol described here is highly effective for the treatment of acquired hemophilia, induces quick therapeutic responses and favorably influences the underlying autoimmune disorder. We suggest that our ITI protocol is suitable for the eradication of idiopathic and autoimmune-associated FVIII autoantibodies in patients presenting with severe bleeding.
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Affiliation(s)
- L Nemes
- Hemophilia Center, National Institute of Hematology and Immunology, Budapest, Hungary.
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Nemes L, Mohai M, Donkó Z, Bertóti I. Detection of CN radicals in DC nitrogen plasma used for deposition of CNx layers. Spectrochim Acta A Mol Biomol Spectrosc 2000; 56:761-767. [PMID: 10794450 DOI: 10.1016/s1386-1425(99)00159-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Emission spectra from a DC plasma discharge of nitrogen with a graphite cathode used for deposition of CNx layers were investigated in the visible range 350-900 nm. The spectra recorded at low and high resolution from both the negative glow and the positive column of the discharge were studied separately. All spectra are dominated by neutral and ionised N2 emission. In the positive column the violet band of the cyanogen (CN) radical was identified and analysed for vibrational structure. From a computer simulation of the rotationally resolved violet band, vibrational temperatures were derived and found to be in the intensity distribution for the nu = 0, 1 and 2 levels from thermal equilibrium. In the negative glow the strong N2+ features completely mask the spectral region of the violet band of CN. Conclusions were drawn concerning the CN formation by chemical sputtering, and the role of CN radicals in the formation of polymeric CNx layers of 1:1 = C:N stoichiometry.
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Affiliation(s)
- L Nemes
- Research Laboratory of Materials and Environmental Chemistry, Chemical Research Center of the Hungarian Academy of Sciences, Budapest
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Nemes L, Luckhaus D, Quack M, Johns J. Deperturbation of the low-frequency infrared modes of ketene (CH 2 CO) 1A preliminary version of this work was presented at the XXIVth European Congress on Molecular Spectroscopy, Prague, August 23–28, 1998, as poster F7. 1. J Mol Struct 2000. [DOI: 10.1016/s0022-2860(99)00253-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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