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Teszak T, Assabiny A, Kiraly A, Tarjanyi Z, Parazs N, Szakal-Toth Z, Kugler S, Szabolcs Z, Fintha A, Muzes G, Vago H, Jermendy A, Edes I, Merkely B, Sax B. Extensive Cardiac Allograft Vasculitis and Concurrent Constrictive Pericarditis 23 Years after Heart Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.480] [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: 04/05/2023] Open
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Teszak T, Assabiny A, Kiraly A, Tarjanyi Z, Parazs N, Szakal-Toth Z, Kugler S, Hartyanszky I, Szabolcs Z, Suhai F, Edes I, Fintha A, Merkely B, Sax B. Multivessel Epicardial Coronary Artery Thrombosis after Heart Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1230] [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: 04/05/2023] Open
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Gruene B, Kugler S, Kuefer-Weiß A, Wolff A, Kossow A, Nießen J, Neuhann F, Ginzel S, Buess M. Public Health benefits by implementing digital symptom diaries for COVID patients from Cologne. Eur J Public Health 2022. [PMCID: PMC9594271 DOI: 10.1093/eurpub/ckac131.049] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background High rate of people infected with SARS-CoV-2 and their contacts in Cologne, Germany required innovative tools for notification, monitoring and reporting. The digital tool for COVID19 (DiKoMa) provides self-service symptom diaries allowing (a) the stratification for prioritized telephone contact by the health authority and (b) training a machine learning (ML) model that predicts infections with prevailing dominant variant (PDV) from early symptom profiles (SP). Methods Pseudononymized SP covering the first week of diary recordings were included for training (16646 index, 11582 contacts). A balanced random forest (BRF) model was trained to differentiate early predictive symptom patterns of different PDV and contact persons. Model evaluation was performed using sex and age stratified cross validation (CV), the model was validated on SP recorded from days 1 and 6. Results From 03/20 to 02/22, 90478 indeces and 75444 contact persons reported symptoms and health status, covering 46% and 42% of all reported cases, respectively. Diaries contained between 1-52 entries (566791, median 2). Daily analysis of entries, prioritized according to age, prevalent co-morbidities and detoriation of symptoms allowed risk adjusted follow up even during phases with high case notification rates. The top 5 predictive factors of the BRF were immunization, cough, dysgeusia and dysnosmia, fatigue, and sniffles to differentiate infection between wildtype, three PDV and contact persons (CV AUC 80.6%, Validation AUC 77.1%). Conclusions The use of digital symptom diary surveillance helps to provide appropriate medical support for patients on a large scale. Machine learning shows potential for symptom based risk assessment to differentiate PDV for future outbreaks and can thus become a valuable tool alongside specific laboratory diagnostics. Key messages • Digital symptom diaries are a powerful and widely accepted tool to attend COVID19 patients in isolation. They allow risk stratification for follow up and are a low-threshold service. • Machine learning supports index case identification by symptom analysis and can thus become a valuable tool alongside specific laboratory diagnostics.
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Affiliation(s)
- B Gruene
- Health Department Cologne , Cologne, Germany
| | - S Kugler
- Fraunhofer Institute for Intelligent Analysis , Sankt Augustin, Germany
| | | | - A Wolff
- Health Department Cologne , Cologne, Germany
| | - A Kossow
- Health Department Cologne , Cologne, Germany
- Institut for Hygiene, University of Muenster , Muenster, Germany
| | - J Nießen
- Health Department Cologne , Cologne, Germany
| | - F Neuhann
- Health Department Cologne , Cologne, Germany
- Institut for Global Health, University of Heidelberg , Heidelberg, Germany
| | - S Ginzel
- Fraunhofer Institute for Intelligent Analysis , Sankt Augustin, Germany
| | - M Buess
- Health Department Cologne , Cologne, Germany
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Ferrante F, Giaimo BD, Friedrich T, Sugino T, Mertens D, Kugler S, Gahr BM, Just S, Pan L, Bartkuhn M, Potente M, Oswald F, Borggrefe T. Hydroxylation of the NOTCH1 intracellular domain regulates Notch signaling dynamics. Cell Death Dis 2022; 13:600. [PMID: 35821235 PMCID: PMC9276811 DOI: 10.1038/s41419-022-05052-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 01/21/2023]
Abstract
Notch signaling plays a pivotal role in the development and, when dysregulated, it contributes to tumorigenesis. The amplitude and duration of the Notch response depend on the posttranslational modifications (PTMs) of the activated NOTCH receptor - the NOTCH intracellular domain (NICD). In normoxic conditions, the hydroxylase FIH (factor inhibiting HIF) catalyzes the hydroxylation of two asparagine residues of the NICD. Here, we investigate how Notch-dependent gene transcription is regulated by hypoxia in progenitor T cells. We show that the majority of Notch target genes are downregulated upon hypoxia. Using a hydroxyl-specific NOTCH1 antibody we demonstrate that FIH-mediated NICD1 hydroxylation is reduced upon hypoxia or treatment with the hydroxylase inhibitor dimethyloxalylglycine (DMOG). We find that a hydroxylation-resistant NICD1 mutant is functionally impaired and more ubiquitinated. Interestingly, we also observe that the NICD1-deubiquitinating enzyme USP10 is downregulated upon hypoxia. Moreover, the interaction between the hydroxylation-defective NICD1 mutant and USP10 is significantly reduced compared to the NICD1 wild-type counterpart. Together, our data suggest that FIH hydroxylates NICD1 in normoxic conditions, leading to the recruitment of USP10 and subsequent NICD1 deubiquitination and stabilization. In hypoxia, this regulatory loop is disrupted, causing a dampened Notch response.
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Affiliation(s)
- Francesca Ferrante
- grid.8664.c0000 0001 2165 8627Institute of Biochemistry, University of Giessen, Friedrichstrasse 24, 35392 Giessen, Germany
| | - Benedetto Daniele Giaimo
- grid.8664.c0000 0001 2165 8627Institute of Biochemistry, University of Giessen, Friedrichstrasse 24, 35392 Giessen, Germany
| | - Tobias Friedrich
- grid.8664.c0000 0001 2165 8627Institute of Biochemistry, University of Giessen, Friedrichstrasse 24, 35392 Giessen, Germany ,Biomedical Informatics and Systems Medicine, Science Unit for Basic and Clinical Medicine, Aulweg 128, 35392 Giessen, Germany
| | - Toshiya Sugino
- grid.418032.c0000 0004 0491 220XMax Planck Institute for Heart and Lung Research, Angiogenesis and Metabolism Laboratory, Ludwigstr. 43, 61231 Bad Nauheim, Germany
| | - Daniel Mertens
- grid.410712.10000 0004 0473 882XUniversity Medical Center Ulm, Center for Internal Medicine, Department of Internal Medicine III, Albert-Einstein-Allee 23, 89081 Ulm, Germany ,grid.7497.d0000 0004 0492 0584German Cancer Research Center (DKFZ), Bridging Group Mechanisms of Leukemogenesis, B061, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Sabrina Kugler
- grid.410712.10000 0004 0473 882XUniversity Medical Center Ulm, Center for Internal Medicine, Department of Internal Medicine III, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Bernd Martin Gahr
- grid.410712.10000 0004 0473 882XUniversity Medical Center Ulm, Center for Internal Medicine, Molecular Cardiology, Department of Internal Medicine II, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Steffen Just
- grid.410712.10000 0004 0473 882XUniversity Medical Center Ulm, Center for Internal Medicine, Molecular Cardiology, Department of Internal Medicine II, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Leiling Pan
- grid.410712.10000 0004 0473 882XUniversity Medical Center Ulm, Center for Internal Medicine, Department of Internal Medicine I, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Marek Bartkuhn
- Biomedical Informatics and Systems Medicine, Science Unit for Basic and Clinical Medicine, Aulweg 128, 35392 Giessen, Germany ,Institute for Lung Health (ILH), Aulweg 132, 35392 Giessen, Germany
| | - Michael Potente
- grid.418032.c0000 0004 0491 220XMax Planck Institute for Heart and Lung Research, Angiogenesis and Metabolism Laboratory, Ludwigstr. 43, 61231 Bad Nauheim, Germany ,grid.484013.a0000 0004 6879 971XBerlin Institute of Health (BIH) at Charité-Universitätsmedizin Berlin, Berlin, Germany ,grid.419491.00000 0001 1014 0849Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany
| | - Franz Oswald
- grid.410712.10000 0004 0473 882XUniversity Medical Center Ulm, Center for Internal Medicine, Department of Internal Medicine I, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Tilman Borggrefe
- grid.8664.c0000 0001 2165 8627Institute of Biochemistry, University of Giessen, Friedrichstrasse 24, 35392 Giessen, Germany
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Kugler S, Pólos M, Király Á, Koppányi Á, Varga T, Szakál-Tóth Z, Parázs N, Teszák T, Tarjányi Z, Prinz G, Hartyánszky I, Szabolcs Z, Merkely B, Sax B. Mycotic Pseudoaneurysm of the Ascending Aorta after Heart Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1994] [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: 11/16/2022] Open
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6
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Hanna BS, Roessner PM, Yazdanparast H, Colomer D, Campo E, Kugler S, Yosifov D, Stilgenbauer S, Schmidt M, Gabriel R, Lichter P, Seiffert M. Control of chronic lymphocytic leukemia development by clonally-expanded CD8 + T-cells that undergo functional exhaustion in secondary lymphoid tissues. Leukemia 2018; 33:625-637. [PMID: 30267008 DOI: 10.1038/s41375-018-0250-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/30/2018] [Accepted: 08/09/2018] [Indexed: 12/19/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is associated with substantial alterations in T-cell composition and function. However, the role of T-cells in CLL remains largely controversial. Here, we utilized the Eµ-TCL1 mouse model of CLL as well as blood and lymph node samples of CLL patients to investigate the existence of anti-tumoral immune responses in CLL, and to characterize involved immune cell populations. Thereby, we identified an oligoclonal CD8+ effector T-cell population that expands along with CLL progression and controls disease development. We further show that a higher percentage of CD8+ effector T-cells produces IFNγ, and demonstrate that neutralization of IFNγ results in faster CLL progression in mice. Phenotypical and functional analyses of expanded CD8+ effector T-cells show significant differences in disease-affected tissues in mice, with cells in secondary lymphoid organs harboring hallmarks of activation-induced T-cell exhaustion. Notably, we further describe a respective population of exhausted CD8+ T-cells that specifically accumulate in lymph nodes, but not in peripheral blood of CLL patients. Collectively, these data emphasize the non-redundant role of CD8+ T-cells in suppressing CLL progression and highlight their dysfunction that can be exploited as target of immunotherapy in this malignancy.
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Affiliation(s)
- Bola S Hanna
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Philipp M Roessner
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Dolors Colomer
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hematopathology Unit, Hospital Clinic, CIBERONC, Barcelona, Spain
| | - Elias Campo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hematopathology Unit, Hospital Clinic, CIBERONC, Barcelona, Spain
| | | | - Deyan Yosifov
- Internal Medicine III, University of Ulm, Ulm, Germany
| | | | - Manfred Schmidt
- Translational Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Richard Gabriel
- Translational Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Peter Lichter
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martina Seiffert
- Molecular Genetics, German Cancer Research Center (DKFZ), Heidelberg, Germany.
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Kugler S, Nagy N, Tokes AM, Racz G, Dorogi B, Nemeskeri A. 587Cardiomyocytes exhibiting purkinje-type morphology and prominent connexin 45 immunoreactivity in the myocardial sleeves of cardiac veins are strongly positive for desmin. Europace 2018. [DOI: 10.1093/europace/euy015.314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Kugler
- Semmelweis University Heart Center, Budapest, Hungary
| | - N Nagy
- Semmelweis University, Department of Anatomy, Histology and Embryology, Budapest, Hungary
| | - A M Tokes
- Semmelweis University, 2nd Department of Pathology, Budapest, Hungary
| | - G Racz
- Semmelweis University, 1st Department of Pathology and Experimental Cancer Research, Budapest, Hungary
| | - B Dorogi
- Semmelweis University, Department of Anatomy, Histology and Embryology, Budapest, Hungary
| | - A Nemeskeri
- Semmelweis University, Department of Anatomy, Histology and Embryology, Budapest, Hungary
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Addis L, Chiang T, Clarke T, Hardison H, Kugler S, Mandelbaum DE, Novotny E, Wolf S, Strug LJ, Pal DK. Evidence for linkage of migraine in Rolandic epilepsy to known 1q23 FHM2 and novel 17q22 genetic loci. Genes Brain Behav 2013; 13:333-40. [PMID: 24286483 DOI: 10.1111/gbb.12110] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/08/2013] [Accepted: 11/25/2013] [Indexed: 12/20/2022]
Abstract
Migraine headaches are a common comorbidity in Rolandic epilepsy (RE) and familial aggregation of migraine in RE families suggests a genetic basis not mediated by seizures. We performed a genome-wide linkage analysis of the migraine phenotype in 38 families with RE to localize potential genetic contribution, with a follow-up in an additional 21 families at linked loci. We used two-point and multipoint LOD (logarithm of the odds) score methods for linkage, maximized over genetic models. We found evidence of linkage to migraine at chromosome 17q12-22 [multipoint HLOD (heterogeneity LOD) 4.40, recessive, 99% penetrance], replicated in the second dataset (HLOD 2.61), and suggestive evidence at 1q23.1-23.2, centering over the FHM2 locus (two-point LOD 3.00 and MP HLOD 2.52). Sanger sequencing in 14 migraine-affected individuals found no coding mutations in the FHM2 gene ATP1A2. There was no evidence of pleiotropy for migraine and either reading or speech disorder, or the electroencephalographic endophenotype of RE when the affected definition was redefined as those with migraine or the comorbid phenotype, and pedigrees were reanalyzed for linkage. In summary, we report a novel migraine susceptibility locus at 17q12-22, and a second locus that may contribute to migraine in the general population at 1q23.1-23.2. Comorbid migraine in RE appears genetically influenced, but we did not obtain evidence that the identified susceptibility loci are consistent with pleiotropic effects on other comorbidities in RE. Loci identified here should be fine-mapped in individuals from RE families with migraine, and prioritized for analysis in other types of epilepsy-associated migraine.
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Affiliation(s)
- L Addis
- Department of Clinical Neuroscience, Institute of Psychiatry, King's College London, London, UK
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9
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Simoes AT, Goncalves N, Koeppen A, Deglon N, Kugler S, Duarte CB, Pereira de Almeida L. Calpastatin-mediated inhibition of calpains in the mouse brain prevents mutant ataxin 3 proteolysis, nuclear localization and aggregation, relieving Machado-Joseph disease. Brain 2012; 135:2428-39. [DOI: 10.1093/brain/aws177] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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11
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Flanagan JM, Kugler S, Waddell N, Johnstone CN, Marsh A, Henderson S, Simpson P, da Silva L, Khanna K, Lakhani S, Boshoff C, Chenevix-Trench G. DNA methylome of familial breast cancer identifies distinct profiles defined by mutation status. Breast Cancer Res 2010. [PMCID: PMC2875560 DOI: 10.1186/bcr2495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Singh J, Baessler H, Kugler S. A direct approach to study radiative emission from triplet excitations in molecular semiconductors and conjugated polymers. J Chem Phys 2008; 129:041103. [DOI: 10.1063/1.2961010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [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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13
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Hegedüs J, Kohary K, Pettifor DG, Shimakawa K, Kugler S. Photoinduced volume changes in amorphous selenium. Phys Rev Lett 2005; 95:206803. [PMID: 16384082 DOI: 10.1103/physrevlett.95.206803] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2005] [Indexed: 05/05/2023]
Abstract
We have modeled the photoinduced volume change in amorphous selenium. After photon absorption, we treated the excited electron and hole independently within the framework of the tight-binding formalism. We found covalent bond breaking in amorphous networks with photoinduced excited electrons, whereas excited holes contribute to the formation of interchain bonds. We also observed a correlated volume change of the amorphous samples. Our results provide a new and universal description, which can simultaneously explain the photoinduced volume expansion and shrinkage. This model is supported by very recent in situ surface height measurements for amorphous selenium.
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Affiliation(s)
- J Hegedüs
- Department of Physics and Material Sciences Center, Philipps University Marburg, Renthof 5, D-35032 Marburg, Germany
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14
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Abstract
Ceramic bone substitute materials are often used to fill defects in comminuted articular fractures. In an in vivo study [1], calcium phosphate cements have been injected into highly loaded slot defects in the proximal tibial metaphysis. During healing, cracks were formed mostly in the proximal anterior aspect of the implanted cement and wedge-like gaps formed between the tibial plateau and the cement. Mechanical ex vivo tests were done to investigate the mechanical competence of the bone cement in such a defect situation. Entirely filled defects were loaded with up to 4.5 kN until they failed. Cyclic loading of the proximal tibiae caused micro fragmentation of the cement after 1000 cycles at 1.5-2.0 kN load. This aspect was comparable to cement fragmentation observed in vivo. Large defects in highly loaded areas should therefore additionally be stabilised with metallic implants. The ceramic cement can only be used as a filler material, which can be replaced by new bone upon resorption.
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Affiliation(s)
- A Gisep
- AO Research Institute, Clavadelerstrasse, Davos Platz, Switzerland.
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Kohary K, Kugler S. Growth of Amorphous Silicon: Low Energy Molecular Dynamics Simulation of Atomic Bombardment. Molecular Simulation 2004. [DOI: 10.1080/08927020310001624690] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Eberhardt O, Coelln RV, Kugler S, Lindenau J, Rathke-Hartlieb S, Gerhardt E, Haid S, Isenmann S, Gravel C, Srinivasan A, Bahr M, Weller M, Dichgans J, Schulz JB. Protection by synergistic effects of adenovirus-mediated X-chromosome-linked inhibitor of apoptosis and glial cell line-derived neurotrophic factor gene transfer in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine model of Parkinson's disease. J Neurosci 2000; 20:9126-34. [PMID: 11124990 PMCID: PMC6773033] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) produces clinical, biochemical, and neuropathological changes reminiscent of those occurring in idiopathic Parkinson's disease (PD). Here we show that a peptide caspase inhibitor, N-benzyloxy-carbonyl-val-ala-asp-fluoromethyl ketone, or adenoviral gene transfer (AdV) of a protein caspase inhibitor, X-chromosome-linked inhibitor of apoptosis (XIAP), prevent cell death of dopaminergic substantia nigra pars compacta (SNpc) neurons induced by MPTP or its active metabolite 1-methyl-4-phenylpyridinium in vitro and in vivo. Because the MPTP-induced decrease in striatal concentrations of dopamine and its metabolites does not differ between AdV-XIAP- and control vector-treated mice, this protection is not associated with a preservation of nigrostriatal terminals. In contrast, the combination of adenoviral gene transfer of XIAP and of the glial cell line-derived neurotrophic factor to the striatum provides synergistic effects, rescuing dopaminergic SNpc neurons from cell death and maintaining their nigrostriatal terminals. These data suggest that a combination of a caspase inhibitor, which blocks death, and a neurotrophic factor, which promotes the specific function of the rescued neurons, may be a promising strategy for the treatment of PD.
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Affiliation(s)
- O Eberhardt
- Neurodegeneration, Neuroregeneration, and Neurooncology Laboratories, Department of Neurology, University of Tübingen, 72076 Tübingen, Germany
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17
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Walters AS, Mandelbaum DE, Lewin DS, Kugler S, England SJ, Miller M. Dopaminergic therapy in children with restless legs/periodic limb movements in sleep and ADHD. Dopaminergic Therapy Study Group. Pediatr Neurol 2000; 22:182-6. [PMID: 10734247 DOI: 10.1016/s0887-8994(99)00152-6] [Citation(s) in RCA: 202] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The long-term effects of monotherapy with levodopa or the dopamine agonist pergolide on the motor/sensory, behavioral, and cognitive variables in seven children with restless legs syndrome/periodic limb movements in sleep (RLS/PLMS) and attention-deficit-hyperactivity disorder (ADHD) were investigated. Five of the seven children had previously been treated with stimulants that had either been determined to be ineffective or to have intolerable side effects. Dopaminergic therapy improved the symptoms of RLS and reduced the number of PLMS per hour of sleep (P = 0.018) and associated arousals (P = 0.042) for the entire group. After treatment, three children no longer met the criteria for ADHD, and three reverted to normal on the Test of Variable Attention. ADHD improved in all seven as measured by the Connors parent rating scale (P<0.04) and the Child Behavior Checklist (P<0.05). A significant improvement also occurred in the visual, but not verbal, memory scores on the Wide Range Assessment of Memory and Learning (P<0.001). Five of seven children continue on dopaminergic therapy 3 years after treatment initiation, with good response. We postulate that the improvement in ADHD may be the result of the amelioration of RLS/PLMS and its associated sleep disturbance. Alternatively, ADHD and RLS/PLMS may share a common dopaminergic deficit.
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Affiliation(s)
- A S Walters
- Department of Adult Neurology, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
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18
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Kugler S, Pusztai L, Rosta L, Chieux P, Bellissent R. Structure of evaporated pure amorphous silicon: Neutron-diffraction and reverse Monte Carlo investigations. Phys Rev B Condens Matter 1993; 48:7685-7688. [PMID: 10006942 DOI: 10.1103/physrevb.48.7685] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kugler S, Anderson B, Cross D, Sharif Z, Sano M, Haggerty R, Prohovnik I, Hurlet-Jensen A, Hilal S, Mohr JP. Abnormal cranial magnetic resonance imaging scans in sickle-cell disease. Neurological correlates and clinical implications. Arch Neurol 1993; 50:629-35. [PMID: 8503800 DOI: 10.1001/archneur.1993.00540060059019] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVE Eight asymptomatic patients with sickle-cell disease (SCD) with magnetic resonance imaging (MRI) abnormalities consistent with cerebral infarcts (group 1) and eight asymptomatic patients with SCD with normal MRI scans (group 2) were followed up to assess the neurological correlates and the clinical outcome. DESIGN Patients in the two cohorts underwent clinical evaluations and xenon 133 regional cerebral blood flow (rCBF) studies within 1 month of the entry MRI. This study sequence was repeated up to 5 years later. Neuropsychological studies also were performed in six group 1 patients and eight group 2 patients at the end of the study. SETTING The patients were recruited from the Comprehensive Sickle Cell Center at Columbia University, New York, NY. PATIENTS All patients had SCD, hemoglobin SS, and normal findings on clinical evaluation at entry. The group 1 cohort had clinically silent MRI abnormalities consistent with cerebral infarction. The group 2 cohort was age matched to group 1 and had normal MRI studies. INTERVENTIONS None. MAIN OUTCOME MEASURE The natural history of MRI abnormalities and the neurological correlates were assessed to determine the predictive value of subclinical MRI lesions as a risk factor for clinically apparent stroke. RESULTS The mean duration of MRI follow-up was 3.7 years. In group 1, four patients (50%) demonstrated progressive MRI abnormalities and three patients (38%) became clinically symptomatic. In group 2, findings for all patients remained normal on clinical and radiological examination. Both groups had markedly elevated rCBF values. Individual rCBF differences correlated with the specific MRI abnormalities. The psychometric study results were similar in the two cohorts. Eighty-three percent of group 1 and 88% of group 2 patients had defective scores in one or more areas of cognitive functioning. Three patients met cognitive criteria for dementia. CONCLUSIONS Cranial MRI abnormalities have important prognostic implications even when detected in clinically asymptomatic patients. Cognitive abnormalities exist in patients with SCD even in the absence of MRI abnormalities or clinical stroke.
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Affiliation(s)
- S Kugler
- Department of Neurology, College of Physicians and Surgeons of Columbia University, New York, NY
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Kugler S, Molnár G, Petö G, Zsoldos E, Rosta L, Menelle A, Bellissent R. Neutron-diffraction study of the structure of evaporated pure amorphous silicon. Phys Rev B Condens Matter 1989; 40:8030-8032. [PMID: 9991246 DOI: 10.1103/physrevb.40.8030] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kugler S, László I. Connection between topology and pi -electron structure in amorphous carbon. Phys Rev B Condens Matter 1989; 39:3882-3884. [PMID: 9948714 DOI: 10.1103/physrevb.39.3882] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kugler S, Surján PR, Náray-Szabó G. Theoretical estimation of static charge fluctuation in amorphous silicon. Phys Rev B Condens Matter 1988; 37:9069-9071. [PMID: 9944284 DOI: 10.1103/physrevb.37.9069] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Németh B, Kugler S. [Ophthalmo-filariasis]. Orv Hetil 1968; 109:195-7. [PMID: 5678047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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