1
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Zeng R, Schlaeger S, Türk M, Baum T, Deschauer M, Janka R, Karampinos D, Kassubek J, Keller-Yamamura S, Kornblum C, Lehmann H, Lichtenstein T, Nagel AM, Reimann J, Rosenbohm A, Schlaffke L, Schmidt M, Schneider-Gold C, Schoser B, Trollmann R, Vorgerd M, Weber MA, Kirschke JS, Schmidt J. [Expert recommendations for magnetic resonance imaging of muscle disorders]. Nervenarzt 2024:10.1007/s00115-024-01673-x. [PMID: 38683354 DOI: 10.1007/s00115-024-01673-x] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
BACKGROUND Magnetic resonance (MRI) imaging of the skeletal muscles (muscle MRI for short) is increasingly being used in clinical routine for diagnosis and longitudinal assessment of muscle disorders. However, cross-centre standards for measurement protocol and radiological assessment are still lacking. OBJECTIVES The aim of this expert recommendation is to present standards for the application and interpretation of muscle MRI in hereditary and inflammatory muscle disorders. METHODS This work was developed in collaboration between neurologists, neuroradiologists, radiologists, neuropaediatricians, neuroscientists and MR physicists from different university hospitals in Germany. The recommendations are based on expert knowledge and a focused literature search. RESULTS The indications for muscle MRI are explained, including the detection and monitoring of structural tissue changes and oedema in the muscle, as well as the identification of a suitable biopsy site. Recommendations for the examination procedure and selection of appropriate MRI sequences are given. Finally, steps for a structured radiological assessment are presented. CONCLUSIONS The present work provides concrete recommendations for the indication, implementation and interpretation of muscle MRI in muscle disorders. Furthermore, it provides a possible basis for the standardisation of the measurement protocols at all clinical centres in Germany.
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Affiliation(s)
- Rachel Zeng
- Klinik für Neurologie, Universitätsmedizin Göttingen, Göttingen, Deutschland
| | - Sarah Schlaeger
- Abteilung für Diagnostische und Interventionelle Neuroradiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland, Ismaningerstr. 22, 81675
- Klinik und Poliklinik für Radiologie, LMU Klinikum, LMU München, München, Deutschland
| | - Matthias Türk
- Neurologische Klinik, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
- Zentrum für seltene Erkrankungen Erlangen (ZSEER), Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Thomas Baum
- Abteilung für Diagnostische und Interventionelle Neuroradiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland, Ismaningerstr. 22, 81675
| | - Marcus Deschauer
- Klinik und Poliklinik für Neurologie, Klinikum rechts der Isar, TUM School of Medicine and Health, Technische Universität München, München, Deutschland
| | - Rolf Janka
- Radiologisches Institut, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Dimitrios Karampinos
- Institut für Diagnostische und Interventionelle Radiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland
| | - Jan Kassubek
- Klinik für Neurologie, Universitätsklinikum Ulm, Ulm, Deutschland
| | - Sarah Keller-Yamamura
- Klinik für Radiologie, Charité Campus Mitte, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Cornelia Kornblum
- Klinik und Poliklinik für Neurologie, Sektion Neuromuskuläre Erkrankungen, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Helmar Lehmann
- Neurologische Klinik, Klinikum Leverkusen, akademisches Lehrkrankenhaus der Universität zu Köln, Köln, Deutschland
- Klinik und Poliklinik für Neurologie, Medizinische Fakultät und Uniklinik Köln, Universität zu Köln, Köln, Deutschland
| | - Thorsten Lichtenstein
- Institut für Diagnostische und Interventionelle Radiologie, Medizinische Fakultät und Uniklinik Köln, Universität zu Köln, Köln, Deutschland
| | - Armin M Nagel
- Radiologisches Institut, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Jens Reimann
- Klinik und Poliklinik für Neurologie, Sektion Neuromuskuläre Erkrankungen, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Angela Rosenbohm
- Klinik für Neurologie, Universitätsklinikum Ulm, Ulm, Deutschland
| | - Lara Schlaffke
- Klinik für Neurologie, BG Universitätsklinikum Bergmannsheil, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Manuel Schmidt
- Neuroradiologisches Institut, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | | | - Benedikt Schoser
- Friedrich-Baur-Institut an der Neurologischen Klinik und Poliklinik, LMU Klinikum, Ludwig-Maximilians-Universität München, München, Deutschland
| | - Regina Trollmann
- Zentrum für seltene Erkrankungen Erlangen (ZSEER), Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
- Abteilung Neuropädiatrie und Sozialpädiatrisches Zentrum am Universitätsklinikum, Kinder- und Jugendklinik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Matthias Vorgerd
- Klinik für Neurologie, BG Universitätsklinikum Bergmannsheil, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Marc-André Weber
- Institut für Diagnostische und Interventionelle Radiologie, Kinder- und Neuroradiologie, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Jan S Kirschke
- Abteilung für Diagnostische und Interventionelle Neuroradiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland, Ismaningerstr. 22, 81675.
| | - Jens Schmidt
- Klinik für Neurologie, Universitätsmedizin Göttingen, Göttingen, Deutschland.
- Abteilung für Neurologie und Schmerztherapie, Neuromuskuläres Zentrum, Zentrum für Translationale Medizin, Immanuel Klinik Rüdersdorf, Universitätsklinikum der Medizinischen Hochschule Brandenburg, Rüdersdorf bei Berlin, Deutschland, Seebad 82/83, 15562.
- Fakultät für Gesundheitswissenschaften Brandenburg, Medizinische Hochschule Brandenburg Theodor Fontane, Rüdersdorf bei Berlin, Deutschland.
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2
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Zeng R, Schlaeger S, Türk M, Baum T, Deschauer M, Janka R, Karampinos D, Kassubek J, Keller-Yamamura S, Kornblum C, Lehmann H, Lichtenstein T, Nagel AM, Reimann J, Rosenbohm A, Schlaffke L, Schmidt M, Schneider-Gold C, Schoser B, Trollmann R, Vorgerd M, Weber MA, Kirschke JS, Schmidt J. [Expert recommendations for magnetic resonance imaging of muscle disorders]. Radiologie (Heidelb) 2024:10.1007/s00117-024-01276-2. [PMID: 38639916 DOI: 10.1007/s00117-024-01276-2] [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] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/07/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Magnetic resonance (MRI) imaging of the skeletal muscles (muscle MRI for short) is increasingly being used in clinical routine for diagnosis and longitudinal assessment of muscle disorders. However, cross-centre standards for measurement protocol and radiological assessment are still lacking. OBJECTIVES The aim of this expert recommendation is to present standards for the application and interpretation of muscle MRI in hereditary and inflammatory muscle disorders. METHODS This work was developed in collaboration between neurologists, neuroradiologists, radiologists, neuropaediatricians, neuroscientists and MR physicists from different university hospitals in Germany. The recommendations are based on expert knowledge and a focused literature search. RESULTS The indications for muscle MRI are explained, including the detection and monitoring of structural tissue changes and oedema in the muscle, as well as the identification of a suitable biopsy site. Recommendations for the examination procedure and selection of appropriate MRI sequences are given. Finally, steps for a structured radiological assessment are presented. CONCLUSIONS The present work provides concrete recommendations for the indication, implementation and interpretation of muscle MRI in muscle disorders. Furthermore, it provides a possible basis for the standardisation of the measurement protocols at all clinical centres in Germany.
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Affiliation(s)
- Rachel Zeng
- Klinik für Neurologie, Universitätsmedizin Göttingen, Göttingen, Deutschland
| | - Sarah Schlaeger
- Abteilung für Diagnostische und Interventionelle Neuroradiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland, Ismaningerstr. 22, 81675
- Klinik und Poliklinik für Radiologie, LMU Klinikum, LMU München, München, Deutschland
| | - Matthias Türk
- Neurologische Klinik, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
- Zentrum für seltene Erkrankungen Erlangen (ZSEER), Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Thomas Baum
- Abteilung für Diagnostische und Interventionelle Neuroradiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland, Ismaningerstr. 22, 81675
| | - Marcus Deschauer
- Klinik und Poliklinik für Neurologie, Klinikum rechts der Isar, TUM School of Medicine and Health, Technische Universität München, München, Deutschland
| | - Rolf Janka
- Radiologisches Institut, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Dimitrios Karampinos
- Institut für Diagnostische und Interventionelle Radiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland
| | - Jan Kassubek
- Klinik für Neurologie, Universitätsklinikum Ulm, Ulm, Deutschland
| | - Sarah Keller-Yamamura
- Klinik für Radiologie, Charité Campus Mitte, Charité Universitätsmedizin Berlin, Berlin, Deutschland
| | - Cornelia Kornblum
- Klinik und Poliklinik für Neurologie, Sektion Neuromuskuläre Erkrankungen, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Helmar Lehmann
- Neurologische Klinik, Klinikum Leverkusen, akademisches Lehrkrankenhaus der Universität zu Köln, Köln, Deutschland
- Klinik und Poliklinik für Neurologie, Medizinische Fakultät und Uniklinik Köln, Universität zu Köln, Köln, Deutschland
| | - Thorsten Lichtenstein
- Institut für Diagnostische und Interventionelle Radiologie, Medizinische Fakultät und Uniklinik Köln, Universität zu Köln, Köln, Deutschland
| | - Armin M Nagel
- Radiologisches Institut, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Jens Reimann
- Klinik und Poliklinik für Neurologie, Sektion Neuromuskuläre Erkrankungen, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Angela Rosenbohm
- Klinik für Neurologie, Universitätsklinikum Ulm, Ulm, Deutschland
| | - Lara Schlaffke
- Klinik für Neurologie, BG Universitätsklinikum Bergmannsheil, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Manuel Schmidt
- Neuroradiologisches Institut, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | | | - Benedikt Schoser
- Friedrich-Baur-Institut an der Neurologischen Klinik und Poliklinik, LMU Klinikum, Ludwig-Maximilians-Universität München, München, Deutschland
| | - Regina Trollmann
- Zentrum für seltene Erkrankungen Erlangen (ZSEER), Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
- Abteilung Neuropädiatrie und Sozialpädiatrisches Zentrum am Universitätsklinikum, Kinder- und Jugendklinik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - Matthias Vorgerd
- Klinik für Neurologie, BG Universitätsklinikum Bergmannsheil, Ruhr-Universität Bochum, Bochum, Deutschland
| | - Marc-André Weber
- Institut für Diagnostische und Interventionelle Radiologie, Kinder- und Neuroradiologie, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Jan S Kirschke
- Abteilung für Diagnostische und Interventionelle Neuroradiologie, Klinikum rechts der Isar, Technische Universität München, München, Deutschland, Ismaningerstr. 22, 81675.
| | - Jens Schmidt
- Klinik für Neurologie, Universitätsmedizin Göttingen, Göttingen, Deutschland.
- Abteilung für Neurologie und Schmerztherapie, Neuromuskuläres Zentrum, Zentrum für Translationale Medizin, Immanuel Klinik Rüdersdorf, Universitätsklinikum der Medizinischen Hochschule Brandenburg, Rüdersdorf bei Berlin, Deutschland, Seebad 82/83, 15562.
- Fakultät für Gesundheitswissenschaften Brandenburg, Medizinische Hochschule Brandenburg Theodor Fontane, Rüdersdorf bei Berlin, Deutschland.
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Tan RL, Sciandra F, Hübner W, Bozzi M, Reimann J, Schoch S, Brancaccio A, Blaess S. Missense mutation (C667F) in murine β-dystroglycan causes embryonic lethality, myopathy and blood-brain barrier destabilization. Dis Model Mech 2024:dmm.050594. [PMID: 38616731 DOI: 10.1242/dmm.050594] [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: 11/10/2023] [Accepted: 04/08/2024] [Indexed: 04/16/2024] Open
Abstract
Dystroglycan (DG) is an extracellular matrix receptor consisting of an α- and a β-DG subunit encoded by the DAG1 gene. The homozygous mutation (c.2006G>T, p.Cys669Phe) in β-DG causes Muscle-Eye-Brain disease with multicystic leukodystrophy in humans. In a mouse model of this primary dystroglycanopathy, approximately two-thirds of homozygous embryos fail to develop to term. Mutant mice that are born undergo a normal postnatal development but show a late-onset myopathy with partially penetrant histopathological changes and an impaired performance on an activity wheel. Their brains and eyes are structurally normal, but the localization of mutant β-DG is altered in the glial perivascular endfeet resulting in a perturbed protein composition of the blood-brain and blood-retina barrier. In addition, α- and β-DG protein levels are significantly reduced in muscle and brain of mutant mice. Due to the partially penetrant developmental phenotype of the C669F-β-DG mice, they represent a novel and highly valuable mouse model to study the molecular effects of β-DG functional alterations both during embryogenesis and in mature muscle, brain and eye, and to gain insight into the pathogenesis of primary dystroglycanopathies.
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Affiliation(s)
- Rui Lois Tan
- Neurodevelopmental Genetics, Institute of Reconstructive Neurobiology, Medical Faculty, University of Bonn, 53127 Bonn, Germany
| | - Francesca Sciandra
- Institute of Chemical Sciences and Technologies "Giulio Natta" (SCITEC)-CNR, Rome, Italy
| | - Wolfgang Hübner
- Biomolecular Photonics, Faculty of Physics, Bielefeld University, 33615 Bielefeld, Germany
| | - Manuela Bozzi
- Institute of Chemical Sciences and Technologies "Giulio Natta" (SCITEC)-CNR, Rome, Italy
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie. Sezione di Biochimica. Università Cattolica del Sacro Cuore di Roma, 00168 Rome, Italy
| | - Jens Reimann
- Department of Neurology, Neuromuscular Diseases Section, University Hospital Bonn, 53127 Bonn, Germany
| | - Susanne Schoch
- Synaptic Neuroscience Team, Institute of Neuropathology, Medical Faculty, University of Bonn, 53127 Bonn, Germany
| | - Andrea Brancaccio
- Institute of Chemical Sciences and Technologies "Giulio Natta" (SCITEC)-CNR, Rome, Italy
- School of Biochemistry, University Walk, University of Bristol, Bristol BS8 1TD, UK
| | - Sandra Blaess
- Neurodevelopmental Genetics, Institute of Reconstructive Neurobiology, Medical Faculty, University of Bonn, 53127 Bonn, Germany
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Lohanadan K, Assent M, Linnemann A, Schuld J, Heukamp LC, Krause K, Vorgerd M, Reimann J, Schänzer A, Kirfel G, Fürst DO, Van der Ven PFM. Synaptopodin-2 Isoforms Have Specific Binding Partners and Display Distinct, Muscle Cell Type-Specific Expression Patterns. Cells 2023; 13:85. [PMID: 38201288 PMCID: PMC10778272 DOI: 10.3390/cells13010085] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/18/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Synaptopodin-2 (SYNPO2) is a protein associated with the Z-disc in striated muscle cells. It interacts with α-actinin and filamin C, playing a role in Z-disc maintenance under stress by chaperone-assisted selective autophagy (CASA). In smooth muscle cells, SYNPO2 is a component of dense bodies. Furthermore, it has been proposed to play a role in tumor cell proliferation and metastasis in many different kinds of cancers. Alternative transcription start sites and alternative splicing predict the expression of six putative SYNPO2 isoforms differing by extended amino- and/or carboxy-termini. Our analyses at mRNA and protein levels revealed differential expression of SYNPO2 isoforms in cardiac, skeletal and smooth muscle cells. We identified synemin, an intermediate filament protein, as a novel binding partner of the PDZ-domain in the amino-terminal extension of the isoforms mainly expressed in cardiac and smooth muscle cells, and demonstrated colocalization of SYNPO2 and synemin in both cell types. A carboxy-terminal extension, mainly expressed in smooth muscle cells, is sufficient for association with dense bodies and interacts with α-actinin. SYNPO2 therefore represents an additional and novel link between intermediate filaments and the Z-discs in cardiomyocytes and dense bodies in smooth muscle cells, respectively. In pathological skeletal muscle samples, we identified SYNPO2 in the central and intermediate zones of target fibers of patients with neurogenic muscular atrophy, and in nemaline bodies. Our findings help to understand distinct functions of individual SYNPO2 isoforms in different muscle tissues, but also in tumor pathology.
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Affiliation(s)
| | - Marvin Assent
- Institute for Cell Biology, University of Bonn, 53121 Bonn, Germany
| | - Anja Linnemann
- Institute for Cell Biology, University of Bonn, 53121 Bonn, Germany
| | - Julia Schuld
- Institute for Cell Biology, University of Bonn, 53121 Bonn, Germany
| | - Lukas C. Heukamp
- Department of Pathology, University Hospital Bonn, 53127 Bonn, Germany
| | - Karsten Krause
- Department of Neurology, Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - Matthias Vorgerd
- Department of Neurology, Heimer Institute for Muscle Research, University Hospital Bergmannsheil, Ruhr-University Bochum, 44789 Bochum, Germany
| | - Jens Reimann
- Department of Neurology, Neuromuscular Diseases Section, University Hospital Bonn, 53127 Bonn, Germany
| | - Anne Schänzer
- Institute of Neuropathology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Gregor Kirfel
- Institute for Cell Biology, University of Bonn, 53121 Bonn, Germany
| | - Dieter O. Fürst
- Institute for Cell Biology, University of Bonn, 53121 Bonn, Germany
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Sarparanta J, Jonson PH, Reimann J, Vihola A, Luque H, Penttilä S, Johari M, Savarese M, Hackman P, Kornblum C, Udd B. Extension of the DNAJB2a isoform in a dominant neuromyopathy family. Hum Mol Genet 2023; 32:3029-3039. [PMID: 37070754 PMCID: PMC10586202 DOI: 10.1093/hmg/ddad058] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/19/2023] Open
Abstract
Recessive mutations in the DNAJB2 gene, encoding the J-domain co-chaperones DNAJB2a and DNAJB2b, have previously been reported as the genetic cause of progressive peripheral neuropathies, rarely involving pyramidal signs, parkinsonism and myopathy. We describe here a family with the first dominantly acting DNAJB2 mutation resulting in a late-onset neuromyopathy phenotype. The c.832 T > G p.(*278Glyext*83) mutation abolishes the stop codon of the DNAJB2a isoform resulting in a C-terminal extension of the protein, with no direct effect predicted on the DNAJB2b isoform of the protein. Analysis of the muscle biopsy showed reduction of both protein isoforms. In functional studies, the mutant protein mislocalized to the endoplasmic reticulum due to a transmembrane helix in the C-terminal extension. The mutant protein underwent rapid proteasomal degradation and also increased the turnover of co-expressed wild-type DNAJB2a, potentially explaining the reduced protein amount in the patient muscle tissue. In line with this dominant negative effect, both wild-type and mutant DNAJB2a were shown to form polydisperse oligomers.
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Affiliation(s)
- Jaakko Sarparanta
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
| | - Per Harald Jonson
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
| | - Jens Reimann
- Klinik und Poliklinik für Neurologie, Sektion Neuromuskuläre Erkrankungen, Universitätsklinikum Bonn, D-53127 Bonn, Germany
| | - Anna Vihola
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
- Neuromuscular Research Center, Tampere University Hospital and Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Helena Luque
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
| | - Sini Penttilä
- Neuromuscular Research Center, Tampere University Hospital and Fimlab Laboratories, FI-33520 Tampere, Finland
| | - Mridul Johari
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
- Harry Perkins Institute of Medical Research, Centre for Medical Research, University of Western Australia, Nedlands WA, Australia
| | - Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
| | - Peter Hackman
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
| | - Cornelia Kornblum
- Klinik und Poliklinik für Neurologie, Sektion Neuromuskuläre Erkrankungen, Universitätsklinikum Bonn, D-53127 Bonn, Germany
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland and Medicum, University of Helsinki, FI-00290 Helsinki, Finland
- Neuromuscular Research Center, Tampere University Hospital and Fimlab Laboratories, FI-33520 Tampere, Finland
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6
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Allen NM, O’Rahelly M, Eymard B, Chouchane M, Hahn A, Kearns G, Kim DS, Byun SY, Nguyen CTE, Schara-Schmidt U, Kölbel H, Marina AD, Schneider-Gold C, Roefke K, Thieme A, Van den Bergh P, Avalos G, Álvarez-Velasco R, Natera-de Benito D, Cheng MHM, Chan WK, Wan HS, Thomas MA, Borch L, Lauzon J, Kornblum C, Reimann J, Mueller A, Kuntzer T, Norwood F, Ramdas S, Jacobson LW, Jie X, Fernandez-Garcia MA, Wraige E, Lim M, Lin JP, Claeys KG, Aktas S, Oskoui M, Hacohen Y, Masud A, Leite MI, Palace J, De Vivo D, Vincent A, Jungbluth H. The emerging spectrum of fetal acetylcholine receptor antibody-related disorders (FARAD). Brain 2023; 146:4233-4246. [PMID: 37186601 PMCID: PMC10545502 DOI: 10.1093/brain/awad153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 02/10/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 05/17/2023] Open
Abstract
In utero exposure to maternal antibodies targeting the fetal acetylcholine receptor isoform (fAChR) can impair fetal movement, leading to arthrogryposis multiplex congenita (AMC). Fetal AChR antibodies have also been implicated in apparently rare, milder myopathic presentations termed fetal acetylcholine receptor inactivation syndrome (FARIS). The full spectrum associated with fAChR antibodies is still poorly understood. Moreover, since some mothers have no myasthenic symptoms, the condition is likely underreported, resulting in failure to implement effective preventive strategies. Here we report clinical and immunological data from a multicentre cohort (n = 46 cases) associated with maternal fAChR antibodies, including 29 novel and 17 previously reported with novel follow-up data. Remarkably, in 50% of mothers there was no previously established myasthenia gravis (MG) diagnosis. All mothers (n = 30) had AChR antibodies and, when tested, binding to fAChR was often much greater than that to the adult AChR isoform. Offspring death occurred in 11/46 (23.9%) cases, mainly antenatally due to termination of pregnancy prompted by severe AMC (7/46, 15.2%), or during early infancy, mainly from respiratory failure (4/46, 8.7%). Weakness, contractures, bulbar and respiratory involvement were prominent early in life, but improved gradually over time. Facial (25/34; 73.5%) and variable peripheral weakness (14/32; 43.8%), velopharyngeal insufficiency (18/24; 75%) and feeding difficulties (16/36; 44.4%) were the most common sequelae in long-term survivors. Other unexpected features included hearing loss (12/32; 37.5%), diaphragmatic paresis (5/35; 14.3%), CNS involvement (7/40; 17.5%) and pyloric stenosis (3/37; 8.1%). Oral salbutamol used empirically in 16/37 (43.2%) offspring resulted in symptom improvement in 13/16 (81.3%). Combining our series with all previously published cases, we identified 21/85 mothers treated with variable combinations of immunotherapies (corticosteroids/intravenous immunoglobulin/plasmapheresis) during pregnancy either for maternal MG symptom control (12/21 cases) or for fetal protection (9/21 cases). Compared to untreated pregnancies (64/85), maternal treatment resulted in a significant reduction in offspring deaths (P < 0.05) and other complications, with treatment approaches involving intravenous immunoglobulin/ plasmapheresis administered early in pregnancy most effective. We conclude that presentations due to in utero exposure to maternal (fetal) AChR antibodies are more common than currently recognized and may mimic a wide range of neuromuscular disorders. Considering the wide clinical spectrum and likely diversity of underlying mechanisms, we propose 'fetal acetylcholine receptor antibody-related disorders' (FARAD) as the most accurate term for these presentations. FARAD is vitally important to recognize, to institute appropriate management strategies for affected offspring and to improve outcomes in future pregnancies. Oral salbutamol is a symptomatic treatment option in survivors.
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Affiliation(s)
- Nicholas M Allen
- Department of Paediatrics, School of Medicine, University of Galway, Galway H91 V4AY, Ireland
| | - Mark O’Rahelly
- Department of Paediatrics, School of Medicine, University of Galway, Galway H91 V4AY, Ireland
| | - Bruno Eymard
- Centre de référence des maladies neuromusculaires Nord/Est/Ile-de-France, Unité Pathologie Neuromusculaire, Bâtiment Babinski, G.H. Pitie-Salpetriere, 75013 Paris, France
| | - Mondher Chouchane
- Department of Pediatrics, Centre Hospitalier Universitaire de Dijon, Dijon, France
| | - Andreas Hahn
- Department of Child Neurology, University Hospital Giessen, 35392 Giessen, Germany
| | - Gerry Kearns
- Department of Maxillofacial Surgery, St. James Hospital, Dublin D08 NHY1, Ireland
| | - Dae-Seong Kim
- Department of Neurology, Pusan National University, School of Medicine, Pusan 50612, South Korea
| | - Shin Yun Byun
- Department of Pediatrics, Pusan National University, School of Medicine, Pusan 50612, South Korea
| | - Cam-Tu Emilie Nguyen
- Pediatric Neurology, CHU Sainte-Justine and Département de neurosciences, Université de Montréal, QC, H3T 1C5, Canada
| | - Ulrike Schara-Schmidt
- Department of Pediatric Neurology, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg, Essen, DE-45147 Essen, Germany
| | - Heike Kölbel
- Department of Pediatric Neurology, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg, Essen, DE-45147 Essen, Germany
| | - Adela Della Marina
- Department of Pediatric Neurology, Centre for Translational Neuro- and Behavioral Sciences, University Duisburg, Essen, DE-45147 Essen, Germany
| | | | - Kathryn Roefke
- Klinik für Kinder- und Jugendmedizin, 99089 Erfurt, Germany
| | - Andrea Thieme
- Department of Neurology, Clinical Neurophysiology and Neurorehabilitation, St. Georg Klinikum, 99817 Eisenach, Germany
| | - Peter Van den Bergh
- Neuromuscular Reference Centre UCL St-Luc, University Hospital Saint-Luc, 1200 Brussels, Belgium
| | - Gloria Avalos
- Department of Medicine, University of Galway, Galway H91 V4AY, Ireland
| | - Rodrigo Álvarez-Velasco
- Unitat Patologia Neuromuscular, Servei Neurologia Hospital Santa Creu i Sant Pau, 08025 Barcelona, Spain
| | | | - Man Hin Mark Cheng
- Department of Paediatrics and Adolescent Medicine, Princess Margaret Hospital, Hong Kong
| | - Wing Ki Chan
- Department of Paediatrics and Adolescent Medicine, Princess Margaret Hospital, Hong Kong
| | - Hoi Shan Wan
- Department of Paediatrics and Adolescent Medicine, Princess Margaret Hospital, Hong Kong
| | - Mary Ann Thomas
- Department of Medical Genetics and Pediatrics, Cumming School of Medicine, University of Calgary, Alberta Children’s Hospital, Calgary, AB T3B 6A8, Canada
| | - Lauren Borch
- Department of Medical Genetics and Pediatrics, Cumming School of Medicine, University of Calgary, Alberta Children’s Hospital, Calgary, AB T3B 6A8, Canada
| | - Julie Lauzon
- Department of Medical Genetics and Pediatrics, Cumming School of Medicine, University of Calgary, Alberta Children’s Hospital, Calgary, AB T3B 6A8, Canada
| | - Cornelia Kornblum
- Department of Neurology, University Hospital Bonn, 53127 Bonn, Germany
- Center for Rare Diseases, University Hospital Bonn, 53127 Bonn, Germany
| | - Jens Reimann
- Department of Neurology, University Hospital Bonn, 53127 Bonn, Germany
| | - Andreas Mueller
- Department of Neonatology and Pediatric Intensive Care, University Hospital Bonn, 53127, Bonn, Germany
| | - Thierry Kuntzer
- Nerve-Muscle Unit, Department of Clinical Neurosciences, CHUV, University of Lausanne, 1011 Lausanne, Switzerland
| | - Fiona Norwood
- Department of Neurology, King’s College Hospital, London SE5 9RS, UK
| | - Sithara Ramdas
- MDUK Neuromuscular Centre, Department of Paediatrics, University of Oxford, Oxford OX3 9DU, UK
| | - Leslie W Jacobson
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford OX3 9DU, UK
| | - Xiaobo Jie
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford OX3 9DU, UK
| | - Miguel A Fernandez-Garcia
- Department of Children’s Neurosciences, Evelina London Children's Hospital, Guy’s & St. Thomas’ Hospital NHS Foundation Trust, London SE1 7EH, UK
| | - Elizabeth Wraige
- Department of Children’s Neurosciences, Evelina London Children's Hospital, Guy’s & St. Thomas’ Hospital NHS Foundation Trust, London SE1 7EH, UK
| | - Ming Lim
- Department of Children’s Neurosciences, Evelina London Children's Hospital, Guy’s & St. Thomas’ Hospital NHS Foundation Trust, London SE1 7EH, UK
- Department of Women and Children’s Health, School of Life Course Sciences (SoLCS), King’s College London, London SE1 9NH, UK
| | - Jean Pierre Lin
- Department of Children’s Neurosciences, Evelina London Children's Hospital, Guy’s & St. Thomas’ Hospital NHS Foundation Trust, London SE1 7EH, UK
| | - Kristl G Claeys
- Department of Neurology, University Hospitals Leuven, 3000 Leuven, Belgium
- Laboratory for Muscle Diseases and Neuropathies, Department of Neurosciences, KU Leuven, and Leuven Brain Institute (LBI), 3000 Leuven, Belgium
| | - Selma Aktas
- Faculty of Medicine, Department of Pediatrics, Division of Neonatology, Acıbadem University, 34752 Istanbul, Turkey
| | - Maryam Oskoui
- Department of Pediatrics, McGill University, Montreal, QC H4A 3J1, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H4A 3J1, Canada
- Centre for Outcomes Research and Evaluation, Research Institute McGill University Health Centre, Montreal, QC H3H 2R9, Canada
| | - Yael Hacohen
- Queen Square MS Centre, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London WC1N 3BG, UK
- Department of Neurology, Great Ormond Street Hospital for Children, London WC1N 3JH, UK
| | - Ameneh Masud
- Department of Neurology, Columbia University Irving Medical Center, New York, NY 10032-3791, USA
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY 10032-3791, USA
| | - M Isabel Leite
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford OX3 9DU, UK
| | - Jacqueline Palace
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford OX3 9DU, UK
| | - Darryl De Vivo
- Department of Neurology, Columbia University Irving Medical Center, New York, NY 10032-3791, USA
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY 10032-3791, USA
| | - Angela Vincent
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford OX3 9DU, UK
| | - Heinz Jungbluth
- Department of Children’s Neurosciences, Evelina London Children's Hospital, Guy’s & St. Thomas’ Hospital NHS Foundation Trust, London SE1 7EH, UK
- Randall Centre for Cell and Molecular Biophysics, Muscle Signalling Section, Faculty of Life Sciences and Medicine (FoLSM), King’s College London, London SE1 1YR, UK
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7
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Vogt S, Kleefeld F, Preusse C, Arendt G, Bieneck S, Brunn A, Deckert M, Englert B, Goebel HH, Masuhr A, Neuen-Jacob E, Kornblum C, Reimann J, Montagnese F, Schoser B, Stenzel W, Hahn K. Morphological and molecular comparison of HIV-associated and sporadic inclusion body myositis. J Neurol 2023; 270:4434-4443. [PMID: 37280376 PMCID: PMC10243696 DOI: 10.1007/s00415-023-11779-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 06/08/2023]
Abstract
OBJECTIVE The molecular characteristics of sporadic inclusion body myositis (sIBM) have been intensively studied, and specific patterns on the cellular, protein and RNA level have emerged. However, these characteristics have not been studied in the context of HIV-associated IBM (HIV-IBM). In this study, we compared clinical, histopathological, and transcriptomic patterns of sIBM and HIV-IBM. METHODS In this cross-sectional study, we compared patients with HIV-IBM and sIBM based on clinical and morphological features as well as gene expression levels of specific T-cell markers in skeletal muscle biopsy samples. Non-disease individuals served as controls (NDC). Cell counts for immunohistochemistry and gene expression profiles for quantitative PCR were used as primary outcomes. RESULTS 14 muscle biopsy samples (7 HIV-IBM, 7 sIBM) of patients and 6 biopsy samples from NDC were included. Clinically, HIV-IBM patients showed a significantly lower age of onset and a shorter period between symptom onset and muscle biopsy. Histomorphologically, HIV-IBM patients showed no KLRG1+ or CD57+ cells, while the number of PD1+ cells did not differ significantly between the two groups. All markers were shown to be significantly upregulated at gene expression level with no significant difference between the IBM subgroups. CONCLUSION Despite HIV-IBM and sIBM sharing important clinical, histopathological, and transcriptomic signatures, the presence of KLRG1+ cells discriminated sIBM from HIV-IBM. This may be explained by longer disease duration and subsequent T-cell stimulation in sIBM. Thus, the presence of TEMRA cells is characteristic for sIBM, but not a prerequisite for the development of IBM in HIV+ patients.
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Affiliation(s)
- Sinja Vogt
- Department of Neurology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | - Felix Kleefeld
- Department of Neurology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
- BIH Charité Clinician Scientist Program, BIH Biomedical Innovation Academy, Berlin Institute of Health at Charité, Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Corinna Preusse
- Department of Neuropathology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | | | - Stefan Bieneck
- Department of Internal Medicine, Rheumatology, Schlosspark-Klinik, 14059, Berlin, Germany
| | - Anna Brunn
- Faculty of Medicine, Institute of Neuropathology, University Hospital Cologne, 50937, Cologne, Germany
| | - Martina Deckert
- Faculty of Medicine, Institute of Neuropathology, University Hospital Cologne, 50937, Cologne, Germany
| | - Benjamin Englert
- Center for Neuropathology and Prion Research, Ludwig-Maximilians University Munich, 81337, Munich, Germany
| | - Hans-Hilmar Goebel
- Department of Neuropathology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany
| | - Anja Masuhr
- Department of Internal Medicine, Infectiology, Auguste-Viktoria-Klinikum, 12157, Berlin, Germany
| | - Eva Neuen-Jacob
- Department of Neuropathology, University Hospital Düsseldorf, 40225, Düsseldorf, Germany
| | - Cornelia Kornblum
- Department of Neurology, University Hospital Bonn, 53127, Bonn, Germany
| | - Jens Reimann
- Department of Neurology, University Hospital Bonn, 53127, Bonn, Germany
| | - Federica Montagnese
- Department of Neurology, Friedrich-Baur-Institute, University Hospital Munich, 80336, Munich, Germany
| | - Benedikt Schoser
- Department of Neurology, Friedrich-Baur-Institute, University Hospital Munich, 80336, Munich, Germany
| | - Werner Stenzel
- Department of Neuropathology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany.
| | - Katrin Hahn
- Department of Neurology, Charité, Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117, Berlin, Germany.
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8
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Reimann J, Sumida K, Kakoki M, Kokh KA, Tereshchenko OE, Kimura A, Güdde J, Höfer U. Ultrafast electron dynamics in a topological surface state observed in two-dimensional momentum space. Sci Rep 2023; 13:5796. [PMID: 37032349 PMCID: PMC10083179 DOI: 10.1038/s41598-023-32811-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/31/2023] [Indexed: 04/11/2023] Open
Abstract
We study ultrafast population dynamics in the topological surface state of Sb[Formula: see text]Te[Formula: see text] in two-dimensional momentum space with time- and angle-resolved two-photon photoemission spectroscopy. Linearly polarized mid-infrared pump pulses are used to permit a direct optical excitation across the Dirac point. We show that this resonant excitation is strongly enhanced within the Dirac cone along three of the six [Formula: see text]-[Formula: see text] directions and results in a macroscopic photocurrent when the plane of incidence is aligned along a [Formula: see text]-[Formula: see text] direction. Our experimental approach makes it possible to disentangle the decay of transiently excited population and photocurent by elastic and inelastic electron scattering within the full Dirac cone in unprecedented detail. This is utilized to show that doping of Sb[Formula: see text]Te[Formula: see text] by vanadium atoms strongly enhances inelastic electron scattering to lower energies, but only scarcely affects elastic scattering around the Dirac cone.
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Affiliation(s)
- J Reimann
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032, Marburg, Germany
| | - K Sumida
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
- Materials Sciences Research Center, Japan Atomic Energy Agency, Sayo, Hyogo, 679-5148, Japan
| | - M Kakoki
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - K A Kokh
- V.S. Sobolev Institute of Geology and Mineralogy SB RAS, 630090, Novosibirsk, Russian Federation
| | - O E Tereshchenko
- Rzhanov Institute of Semiconductor Physics SB RAS, 630090, Novosibirsk, Russian Federation
| | - A Kimura
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
- International Institute for Sustainability with Knotted Chiral Meta Matter (SKCM2), 1-3-2 Kagamiyama, Higashi-Hiroshima, 739-8511, Japan
| | - J Güdde
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032, Marburg, Germany.
| | - U Höfer
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032, Marburg, Germany
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9
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Ito S, Schüler M, Meierhofer M, Schlauderer S, Freudenstein J, Reimann J, Afanasiev D, Kokh KA, Tereshchenko OE, Güdde J, Sentef MA, Höfer U, Huber R. Build-up and dephasing of Floquet-Bloch bands on subcycle timescales. Nature 2023; 616:696-701. [PMID: 37046087 DOI: 10.1038/s41586-023-05850-x] [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] [Received: 03/21/2022] [Accepted: 02/15/2023] [Indexed: 04/14/2023]
Abstract
Strong light fields have created opportunities to tailor novel functionalities of solids1-5. Floquet-Bloch states can form under periodic driving of electrons and enable exotic quantum phases6-15. On subcycle timescales, lightwaves can simultaneously drive intraband currents16-29 and interband transitions18,19,30,31, which enable high-harmonic generation16,18,19,21,22,25,28-30 and pave the way towards ultrafast electronics. Yet, the interplay of intraband and interband excitations and their relation to Floquet physics have been key open questions as dynamical aspects of Floquet states have remained elusive. Here we provide this link by visualizing the ultrafast build-up of Floquet-Bloch bands with time-resolved and angle-resolved photoemission spectroscopy. We drive surface states on a topological insulator32,33 with mid-infrared fields-strong enough for high-harmonic generation-and directly monitor the transient band structure with subcycle time resolution. Starting with strong intraband currents, we observe how Floquet sidebands emerge within a single optical cycle; intraband acceleration simultaneously proceeds in multiple sidebands until high-energy electrons scatter into bulk states and dissipation destroys the Floquet bands. Quantum non-equilibrium calculations explain the simultaneous occurrence of Floquet states with intraband and interband dynamics. Our joint experiment and theory study provides a direct time-domain view of Floquet physics and explores the fundamental frontiers of ultrafast band-structure engineering.
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Affiliation(s)
- S Ito
- Department of Physics, Philipps-University of Marburg, Marburg, Germany
| | - M Schüler
- Laboratory for Materials Simulations, Paul Scherrer Institute, Villigen PSI, Switzerland
- Department of Physics, University of Fribourg, Fribourg, Switzerland
| | - M Meierhofer
- Department of Physics, University of Regensburg, Regensburg, Germany
| | - S Schlauderer
- Department of Physics, University of Regensburg, Regensburg, Germany
| | - J Freudenstein
- Department of Physics, University of Regensburg, Regensburg, Germany
| | - J Reimann
- Department of Physics, Philipps-University of Marburg, Marburg, Germany
| | - D Afanasiev
- Department of Physics, University of Regensburg, Regensburg, Germany
| | - K A Kokh
- A.V. Rzhanov Institute of Semiconductor Physics and V.S. Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russian Federation
| | - O E Tereshchenko
- A.V. Rzhanov Institute of Semiconductor Physics and V.S. Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russian Federation
| | - J Güdde
- Department of Physics, Philipps-University of Marburg, Marburg, Germany
| | - M A Sentef
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany.
| | - U Höfer
- Department of Physics, Philipps-University of Marburg, Marburg, Germany.
- Department of Physics, University of Regensburg, Regensburg, Germany.
| | - R Huber
- Department of Physics, University of Regensburg, Regensburg, Germany.
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10
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Mesropyan N, Khorsandian L, Faron A, Sprinkart AM, Dorn F, Paech D, Isaak A, Kuetting D, Pieper CC, Radbruch A, Attenberger UI, Reimann J, Bode FJ, Kornblum C, Luetkens JA. Computed tomography derived cervical fat-free muscle fraction as an imaging-based outcome marker in patients with acute ischemic stroke: a pilot study. BMC Neurol 2023; 23:86. [PMID: 36855093 PMCID: PMC9971678 DOI: 10.1186/s12883-023-03132-7] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 02/19/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND Outcome assessment in stroke patients is essential for evidence-based stroke care planning. Computed tomography (CT) is the mainstay of diagnosis in acute stroke. This study aimed to investigate whether CT-derived cervical fat-free muscle fraction (FFMF) as a biomarker of muscle quality is associated with outcome parameters after acute ischemic stroke. METHODS In this retrospective study, 66 patients (mean age: 76 ± 13 years, 30 female) with acute ischemic stroke in the anterior circulation who underwent CT, including CT-angiography, and endovascular mechanical thrombectomy of the middle cerebral artery between August 2016 and January 2020 were identified. Based on densitometric thresholds, cervical paraspinal muscles covered on CT-angiography were separated into areas of fatty and lean muscle and FFMF was calculated. The study cohort was binarized based on median FFMF (cutoff value: < 71.6%) to compare clinical variables and outcome data between two groups. Unpaired t test and Mann-Whitney U test were used for statistical analysis. RESULTS National Institute of Health Stroke Scale (NIHSS) (12.2 ± 4.4 vs. 13.6 ± 4.5, P = 0.297) and modified Rankin scale (mRS) (4.3 ± 0.9 vs. 4.4 ± 0.9, P = 0.475) at admission, and pre-stroke mRS (1 ± 1.3 vs. 0.9 ± 1.4, P = 0.489) were similar between groups with high and low FFMF. NIHSS and mRS at discharge were significantly better in patients with high FFMF compared to patients with low FFMF (NIHSS: 4.5 ± 4.4 vs. 9.5 ± 6.7; P = 0.004 and mRS: 2.9 ± 2.1 vs.3.9 ± 1.8; P = 0.049). 90-day mRS was significantly better in patients with high FFMF compared to patients with low FFMF (3.3 ± 2.2 vs. 4.3 ± 1.9, P = 0.045). CONCLUSION Cervical FFMF obtained from routine clinical CT might be a new imaging-based muscle quality biomarker for outcome prediction in stroke patients.
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Affiliation(s)
- Narine Mesropyan
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - Louisa Khorsandian
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,grid.15090.3d0000 0000 8786 803XDepartment of Neurology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Anton Faron
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany ,Radiologische Allianz, Andreas-Knack-Ring 16, 22307 Hamburg, Germany
| | - Alois M. Sprinkart
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - Franziska Dorn
- grid.15090.3d0000 0000 8786 803XDepartment of Neuroradiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Daniel Paech
- grid.15090.3d0000 0000 8786 803XDepartment of Neuroradiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Alexander Isaak
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - Daniel Kuetting
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - Claus C. Pieper
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Alexander Radbruch
- grid.15090.3d0000 0000 8786 803XDepartment of Neuroradiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Ulrike I. Attenberger
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Jens Reimann
- grid.15090.3d0000 0000 8786 803XDepartment of Neurology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Felix J. Bode
- grid.15090.3d0000 0000 8786 803XDepartment of Neurology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Cornelia Kornblum
- grid.15090.3d0000 0000 8786 803XDepartment of Neurology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany
| | - Julian A. Luetkens
- grid.15090.3d0000 0000 8786 803XDepartment of Diagnostic and Interventional Radiology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany ,Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
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11
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van den Bersselaar LR, Heytens L, Silva HCA, Reimann J, Tasca G, Díaz‐Cambronero Ó, Løkken N, Hellblom A, Hopkins PM, Rueffert H, Bastian B, Vilchez JJ, Gillies R, Johannsen S, Veyckemans F, Muenster T, Klein A, Litman R, Jungbluth H, Riazi S, Voermans NC, Snoeck MMJ. European Neuromuscular Centre consensus statement on anaesthesia in patients with neuromuscular disorders. Eur J Neurol 2022; 29:3486-3507. [PMID: 35971866 PMCID: PMC9826444 DOI: 10.1111/ene.15526] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 06/01/2022] [Revised: 07/05/2022] [Accepted: 08/11/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND PURPOSE Patients with neuromuscular conditions are at increased risk of suffering perioperative complications related to anaesthesia. There is currently little specific anaesthetic guidance concerning these patients. Here, we present the European Neuromuscular Centre (ENMC) consensus statement on anaesthesia in patients with neuromuscular disorders as formulated during the 259th ENMC Workshop on Anaesthesia in Neuromuscular Disorders. METHODS International experts in the field of (paediatric) anaesthesia, neurology, and genetics were invited to participate in the ENMC workshop. A literature search was conducted in PubMed and Embase, the main findings of which were disseminated to the participants and presented during the workshop. Depending on specific expertise, participants presented the existing evidence and their expert opinion concerning anaesthetic management in six specific groups of myopathies and neuromuscular junction disorders. The consensus statement was prepared according to the AGREE II (Appraisal of Guidelines for Research & Evaluation) reporting checklist. The level of evidence has been adapted according to the SIGN (Scottish Intercollegiate Guidelines Network) grading system. The final consensus statement was subjected to a modified Delphi process. RESULTS A set of general recommendations valid for the anaesthetic management of patients with neuromuscular disorders in general have been formulated. Specific recommendations were formulated for (i) neuromuscular junction disorders, (ii) muscle channelopathies (nondystrophic myotonia and periodic paralysis), (iii) myotonic dystrophy (types 1 and 2), (iv) muscular dystrophies, (v) congenital myopathies and congenital dystrophies, and (vi) mitochondrial and metabolic myopathies. CONCLUSIONS This ENMC consensus statement summarizes the most important considerations for planning and performing anaesthesia in patients with neuromuscular disorders.
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Affiliation(s)
- Luuk R. van den Bersselaar
- Malignant Hyperthermia Investigation Unit, Department of AnaesthesiologyCanisius Wilhelmina Hospital NijmegenNijmegenThe Netherlands,Department of Neurology, Donders Institute for Brain, Cognition, and BehaviourRadboud University Medical CentreNijmegenThe Netherlands
| | - Luc Heytens
- Malignant Hyperthermia Research Unit, Departments of Anaesthesiology and NeurologyUniversity Hospital Antwerp, University of Antwerp and Born Bunge InstituteAntwerpBelgium
| | - Helga C. A. Silva
- Malignant Hyperthermia Unit, Department of Surgery, Discipline of Anaesthesia, Pain, and Intensive CareSão Paulo Federal UniversitySão PauloBrazil
| | - Jens Reimann
- Department of NeurologyUniversity of Bonn Medical CentreBonnGermany
| | - Giorgio Tasca
- UOC of NeurologyA. Gemelli University Polyclinic Foundation, Scientific Institute for Research and Health CareRomeItaly
| | - Óscar Díaz‐Cambronero
- Malignant Hyperthermia Unit, Department of AnaesthesiologyPerioperative Medicine Research Group, La Fe University and Polytechnic HospitalValenciaSpain
| | - Nicoline Løkken
- Copenhagen Neuromuscular CentreRigshospitalet, Copenhagen University HospitalCopenhagenDenmark
| | - Anna Hellblom
- Department of Intensive and Perioperative CareSkåne University Hospital LundLundSweden
| | - Philip M. Hopkins
- Leeds Institute of Medical Research at St James'sUniversity of Leeds and Malignant Hyperthermia Investigation Unit, St James's University HospitalLeedsUK
| | - Henrik Rueffert
- Schkeuditz Helios Clinic, Malignant Hyperthermia Investigation Unit, Department of Anaesthesiology, Intensive Care, Pain TherapyUniversity Hospital LeipzigLeipzigGermany
| | - Börge Bastian
- Schkeuditz Helios Clinic, Malignant Hyperthermia Investigation Unit, Department of Anaesthesiology, Intensive Care, Pain TherapyUniversity Hospital LeipzigLeipzigGermany
| | - Juan Jesus Vilchez
- Neuromuscular Centre, La Fe Hospital UIP and ERN EURO‐NMDNeuromuscular Research Group at La Fe IIS and CIBERERValenciaSpain
| | - Robyn Gillies
- Malignant Hyperthermia Diagnostic Unit, Department of Anaesthesia and Pain ManagementRoyal Melbourne HospitalParkvilleVictoriaAustralia
| | - Stephan Johannsen
- Department of Anaesthesiology, Intensive Care, Emergency, and Pain Medicine, Centre for Malignant HyperthermiaUniversity Hospital WürzburgWürzburgGermany
| | - Francis Veyckemans
- Paediatric Anaesthesia ClinicJeanne de Flandre Hospital, Lille University Hospital CentreLilleFrance
| | - Tino Muenster
- Department of Anaesthesia and Intensive Care MedicineHospital of the Order of St John of GodRegensburgGermany
| | - Andrea Klein
- Department of Paediatric NeurologyUniversity Children's Hospital UKBBBaselSwitzerland,Division of Neuropaediatrics, Development, and Rehabilitation, Department of Paediatrics, InselspitalBern University Hospital, University of BernBernSwitzerland
| | - Ron Litman
- Department of Anaesthesiology and Critical CareChildren's Hospital of PhiladelphiaPhiladelphiaPennsylvaniaUSA
| | - Heinz Jungbluth
- Department of Paediatric Neurology, Neuromuscular ServiceEvelina's Children Hospital, Guy's and St Thomas' Hospital National Health Service Foundation TrustLondonUK,Randall Centre for Cell and Molecular Biophysics, Muscle Signalling Section, Faculty of Life Sciences and MedicineKing's College LondonLondonUK
| | - Sheila Riazi
- Malignant Hyperthermia Investigation Unit, Department of Anaesthesiology and Pain MedicineUniversity Health Network, University of TorontoTorontoOntarioCanada
| | - Nicol C. Voermans
- Department of Neurology, Donders Institute for Brain, Cognition, and BehaviourRadboud University Medical CentreNijmegenThe Netherlands
| | - Marc M. J. Snoeck
- Malignant Hyperthermia Investigation Unit, Department of AnaesthesiologyCanisius Wilhelmina Hospital NijmegenNijmegenThe Netherlands
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12
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Winkler M, Kappes-Horn K, Reimann J. TEMPORARY REMOVAL: VP.47 Interleukin 31 (IL-31) inhibition as a trigger for an immune-mediated myopathy? Neuromuscul Disord 2022; 32 Suppl 1:S84. [DOI: 10.1016/j.nmd.2022.07.178] [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: 11/07/2022]
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13
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Winkler M, von Landenberg C, Kappes-Horn K, Neudecker S, Kornblum C, Reimann J. Diagnosis and Clinical Development of Sporadic Inclusion Body Myositis and Polymyositis With Mitochondrial Pathology: A Single-Center Retrospective Analysis. J Neuropathol Exp Neurol 2021; 80:1060–1067. [PMID: 34643702 DOI: 10.1093/jnen/nlab101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
To review our diagnostic and treatment approaches concerning sporadic inclusion body myositis (sIBM) and polymyositis with mitochondrial pathology (PM-Mito), we conducted a retrospective analysis of clinical and histological data of 32 patients diagnosed as sIBM and 7 patients diagnosed as PM-Mito by muscle biopsy. Of 32 patients identified histologically as sIBM, 19 fulfilled the 2011 European Neuromuscular Center (ENMC) diagnostic criteria for "clinico-pathologically defined sIBM" at the time of biopsy. Among these, 2 patients developed sIBM after years of immunosuppressive treatment for organ transplantation. Of 11 patients fulfilling the histological but not the clinical criteria, including 3 cases with duration <12 months, 8 later fulfilled the criteria for clinico-pathologically defined sIBM. Of 7 PM-Mito patients, 4 received immunosuppression with clinical improvement in 3. One of these later developed clinico-pathologically defined sIBM; 1 untreated patient progressed to clinically defined sIBM. Thus, muscle histology remains important for this differential diagnosis to identify sIBM patients not matching the ENMC criteria and the PM-Mito group. In the latter, we report at least 50% positive, if occasionally transient, response to immunosuppressive treatments and progression to sIBM in a minority. The mitochondrial abnormalities defining PM-Mito do not seem to define the threshold to immunosuppression unresponsiveness.
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Affiliation(s)
- Maren Winkler
- From the Section of Neuromuscular Diseases, Department of Neurology, University Hospital of Bonn, Bonn, Germany (MW, CvL, KK-H, CK, JR); Group Practice for Neurology, Bonn, Germany (SN); Center for Rare Diseases, University Hospital of Bonn, Bonn, Germany (CK)
| | - Christina von Landenberg
- From the Section of Neuromuscular Diseases, Department of Neurology, University Hospital of Bonn, Bonn, Germany (MW, CvL, KK-H, CK, JR); Group Practice for Neurology, Bonn, Germany (SN); Center for Rare Diseases, University Hospital of Bonn, Bonn, Germany (CK)
| | - Karin Kappes-Horn
- From the Section of Neuromuscular Diseases, Department of Neurology, University Hospital of Bonn, Bonn, Germany (MW, CvL, KK-H, CK, JR); Group Practice for Neurology, Bonn, Germany (SN); Center for Rare Diseases, University Hospital of Bonn, Bonn, Germany (CK)
| | - Stephan Neudecker
- From the Section of Neuromuscular Diseases, Department of Neurology, University Hospital of Bonn, Bonn, Germany (MW, CvL, KK-H, CK, JR); Group Practice for Neurology, Bonn, Germany (SN); Center for Rare Diseases, University Hospital of Bonn, Bonn, Germany (CK)
| | - Cornelia Kornblum
- From the Section of Neuromuscular Diseases, Department of Neurology, University Hospital of Bonn, Bonn, Germany (MW, CvL, KK-H, CK, JR); Group Practice for Neurology, Bonn, Germany (SN); Center for Rare Diseases, University Hospital of Bonn, Bonn, Germany (CK)
| | - Jens Reimann
- From the Section of Neuromuscular Diseases, Department of Neurology, University Hospital of Bonn, Bonn, Germany (MW, CvL, KK-H, CK, JR); Group Practice for Neurology, Bonn, Germany (SN); Center for Rare Diseases, University Hospital of Bonn, Bonn, Germany (CK)
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14
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Deres F, Schwartz S, Kappes-Horn K, Kornblum C, Reimann J. Early Changes in Skeletal Muscle of Young C22 Mice, A Model of Charcot-Marie-Tooth 1A. J Neuromuscul Dis 2021; 8:S283-S299. [PMID: 34459411 PMCID: PMC8673495 DOI: 10.3233/jnd-210681] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: The C22 mouse is a Charcot-Marie-Tooth 1A transgenic model with minimal axonal loss. Objective: To analyse early skeletal muscle changes resulting from this dysmyelinating neuropathy. Methods: Histology of tibialis anterior muscles of C22 mice and wild type litter mate controls for morphometric analysis and (immuno-)histochemistry for known denervation markers and candidate proteins identified by representational difference analysis (RDA) based on mRNA from the same muscles; quantitative PCR and Western blotting for confirmation of RDA findings. Results: At age 10 days, morphometry was not different between groups, while at 21 days, C22 showed significantly more small diameter fibres, indicating the onset of atrophy at an age when weakness becomes detectable. Neither (immuno-)histochemistry nor RDA detected extrajunctional expression of acetylcholine receptors by age 10 and 21 days, respectively. RDA identified some mRNA up-regulated in C22 muscles, among them at 10 days, prior to detectable weakness or atrophy, integral membrane protein 2a (Itm2a), eukaryotic initiation factor 2, subunit 2 (Eif2s2) and cytoplasmic phosphatidylinositol transfer protein 1 (Pitpnc1). However, qPCR failed to measure significant differences. In contrast, Itm2a and Eif2s2 mRNA were significantly down-regulated comparing 21 versus 10 days of age in both groups, C22 and controls. Western blotting confirmed significant down-regulation of ITM2A protein in C22 only. Conclusion: Denervation-like changes in this model develop slowly with onset of atrophy and weakness at about three weeks of age, before detection of extrajunctional acetylcholine receptors. Altered Itm2a expression seems to begin early as an increase, but becomes distinct as a decrease later.
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Affiliation(s)
- Friederike Deres
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany
| | - Stephanie Schwartz
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany
| | - Karin Kappes-Horn
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany
| | - Cornelia Kornblum
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany.,Centre for Rare Diseases, University Hospital Bonn, Germany
| | - Jens Reimann
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany
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15
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Johari M, Sarparanta J, Vihola A, Jonson PH, Savarese M, Jokela M, Torella A, Piluso G, Said E, Vella N, Cauchi M, Magot A, Magri F, Mauri E, Kornblum C, Reimann J, Stojkovic T, Romero NB, Luque H, Huovinen S, Lahermo P, Donner K, Comi GP, Nigro V, Hackman P, Udd B. Missense mutations in small muscle protein X-linked (SMPX) cause distal myopathy with protein inclusions. Acta Neuropathol 2021; 142:375-393. [PMID: 33974137 PMCID: PMC8270885 DOI: 10.1007/s00401-021-02319-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 04/26/2021] [Accepted: 04/26/2021] [Indexed: 01/05/2023]
Abstract
Using
deep phenotyping and high-throughput sequencing, we have identified a novel type of distal myopathy caused by mutations in the Small muscle protein X-linked (SMPX) gene. Four different missense mutations were identified in ten patients from nine families in five different countries, suggesting that this disease could be prevalent in other populations as well. Haplotype analysis of patients with similar ancestry revealed two different founder mutations in Southern Europe and France, indicating that the prevalence in these populations may be higher. In our study all patients presented with highly similar clinical features: adult-onset, usually distal more than proximal limb muscle weakness, slowly progressing over decades with preserved walking. Lower limb muscle imaging showed a characteristic pattern of muscle involvement and fatty degeneration. Histopathological and electron microscopic analysis of patient muscle biopsies revealed myopathic findings with rimmed vacuoles and the presence of sarcoplasmic inclusions, some with amyloid-like characteristics. In silico predictions and subsequent cell culture studies showed that the missense mutations increase aggregation propensity of the SMPX protein. In cell culture studies, overexpressed SMPX localized to stress granules and slowed down their clearance.
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Affiliation(s)
- Mridul Johari
- Folkhälsan Research Center, Helsinki, Finland.
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland.
| | - Jaakko Sarparanta
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Anna Vihola
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Neuromuscular Research Center, Fimlab Laboratories, Tampere University and University Hospital, Tampere, Finland
| | - Per Harald Jonson
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Manu Jokela
- Neuromuscular Research Center, Department of Neurology, Tampere University and University Hospital, Tampere, Finland
- Division of Clinical Neurosciences, Department of Neurology, Turku University Hospital, Turku, Finland
| | - Annalaura Torella
- Dipartimento di Medicina di Precisione, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Giulio Piluso
- Dipartimento di Medicina di Precisione, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
| | - Edith Said
- Section of Medical Genetics, Mater Dei Hospital, Msida, Malta
- Department of Anatomy and Cell Biology, Faculty of Medicine and Surgery, University of Malta, Msida, Malta
| | - Norbert Vella
- Neuroscience Department, Mater Dei Hospital, Msida, Malta
| | - Marija Cauchi
- Neuroscience Department, Mater Dei Hospital, Msida, Malta
| | - Armelle Magot
- Neuromuscular Disease Center AOC, University Hospital Nantes, Nantes, France
| | - Francesca Magri
- IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Neurology Unit, Milan, Italy
| | - Eleonora Mauri
- IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Neurology Unit, Milan, Italy
| | | | - Jens Reimann
- Department of Neurology, University Hospital Bonn, Bonn, Germany
| | - Tanya Stojkovic
- AP-HP, Institute of Myology, Centre de Référence des Maladies Neuromusculaires, Hôpital Pitié-Salpêtrière, Paris, France
| | - Norma B Romero
- Neuromuscular Morphology Unit, Institute of Myology, Myology Research Centre INSERM, Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
| | - Helena Luque
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Sanna Huovinen
- Department of Pathology, Fimlab Laboratories, Tampere University Hospital, Tampere, Finland
| | - Päivi Lahermo
- Institute for Molecular Medicine Finland FIMM, Technology Centre, University of Helsinki, Helsinki, Finland
| | - Kati Donner
- Institute for Molecular Medicine Finland FIMM, Technology Centre, University of Helsinki, Helsinki, Finland
| | - Giacomo Pietro Comi
- IRCCS Fondazione Ca' Granda Ospedale Maggiore Policlinico, Neuromuscular and Rare Disease Unit, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Vincenzo Nigro
- Dipartimento di Medicina di Precisione, Università degli Studi della Campania "Luigi Vanvitelli", Naples, Italy
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Peter Hackman
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Neuromuscular Research Center, Department of Neurology, Tampere University and University Hospital, Tampere, Finland
- Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
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16
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Abstract
There is increasing evidence of central nervous system involvement in numerous neuromuscular disorders primarily considered diseases of skeletal muscle. Our knowledge on cerebral affection in myopathies is expanding continuously due to a better understanding of the genetic background and underlying pathophysiological mechanisms. Intriguingly, there is a remarkable overlap of brain pathology in muscular diseases with pathomechanisms involved in neurodegenerative or neurodevelopmental disorders. A rapid progress in advanced neuroimaging techniques results in further detailed insight into structural and functional cerebral abnormalities. The spectrum of clinical manifestations is broad and includes movement disorders, neurovascular complications, paroxysmal neurological symptoms like migraine and epileptic seizures, but also behavioural abnormalities and cognitive dysfunction. Cerebral involvement implies a high socio-economic and personal burden in adult patients sometimes exceeding the everyday challenges associated with muscle weakness. It is especially important to clarify the nature and natural history of brain affection against the background of upcoming specific treatment regimen in hereditary myopathies that should address the brain as a secondary target. This review aims to highlight the character and extent of central nervous system involvement in patients with hereditary myopathies manifesting in adulthood, however also includes some childhood-onset diseases with brain abnormalities that transfer into adult neurological care.
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Affiliation(s)
- Jens Reimann
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany.,Center for Rare Diseases, University Hospital Bonn, Germany
| | - Cornelia Kornblum
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Germany.,Center for Rare Diseases, University Hospital Bonn, Germany
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17
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Birtel J, von Landenberg C, Gliem M, Gliem C, Reimann J, Kunz WS, Herrmann P, Betz C, Caswell R, Nesbitt V, Kornblum C, Issa PC. Mitochondrial Retinopathy. Ophthalmol Retina 2021; 6:65-79. [PMID: 34257060 DOI: 10.1016/j.oret.2021.02.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 02/02/2021] [Revised: 02/26/2021] [Accepted: 02/26/2021] [Indexed: 01/01/2023]
Abstract
PURPOSE To report the retinal phenotype and the associated genetic and systemic findings in patients with mitochondrial disease. DESIGN Retrospective case series. PARTICIPANTS Twenty-three patients with retinopathy and mitochondrial disease, including chronic progressive external ophthalmoplegia (CPEO), maternally inherited diabetes and deafness (MIDD), mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS), Kearns-Sayre syndrome, neuropathy, ataxia, and retinitis pigmentosa (NARP) syndrome, and other systemic manifestations. METHODS Review of case notes, retinal imaging, electrophysiologic assessment, molecular genetic testing including protein modeling, and histologic analysis of muscle biopsy. MAIN OUTCOME MEASURES Phenotypic characteristics of mitochondrial retinopathy. RESULTS Genetic testing identified sporadic large-scale mitochondrial DNA deletions and variants in MT-TL1, MT-ATP6, MT-TK, MT-RNR1, or RRM2B. Based on retinal imaging, 3 phenotypes could be differentiated: type 1 with mild, focal pigmentary abnormalities; type 2 characterized by multifocal white-yellowish subretinal deposits and pigment changes limited to the posterior pole; and type 3 with widespread granular pigment alterations. Advanced type 2 and 3 retinopathy presented with chorioretinal atrophy that typically started in the peripapillary and paracentral areas with foveal sparing. Two patients exhibited a different phenotype: 1 revealed an occult retinopathy, and the patient with RRM2B-associated retinopathy showed no foveal sparing, no severe peripapillary involvement, and substantial photoreceptor atrophy before loss of the retinal pigment epithelium. Two patients with type 1 disease showed additional characteristics of mild macular telangiectasia type 2. Patients with type 1 and mild type 2 or 3 disease demonstrated good visual acuity and no symptoms associated with the retinopathy. In contrast, patients with advanced type 2 or 3 disease often reported vision problems in dim light conditions, reduced visual acuity, or both. Short-wavelength autofluorescence usually revealed a distinct pattern, and near-infrared autofluorescence may be severely reduced in type 3 disease. The retinal phenotype was key to suspecting mitochondrial disease in 11 patients, whereas 12 patients were diagnosed before retinal examination. CONCLUSIONS Different types of mitochondrial retinopathy show characteristic features. Even in absence of visual symptoms, their recognition may facilitate the often challenging and delayed diagnosis of mitochondrial disease, in particular in patients with mild or nebulous multisystem disease.
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Affiliation(s)
- Johannes Birtel
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom; Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom; Department of Ophthalmology, University Hospital Bonn, Bonn, Germany; Center for Rare Diseases Bonn (ZSEB), University Hospital Bonn, Bonn, Germany
| | - Christina von Landenberg
- Center for Rare Diseases Bonn (ZSEB), University Hospital Bonn, Bonn, Germany; Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Bonn, Germany
| | - Martin Gliem
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom; Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Carla Gliem
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Bonn, Germany
| | - Jens Reimann
- Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Bonn, Germany
| | - Wolfram S Kunz
- Department of Epileptology, Life & Brain Center, University Hospital Bonn, Bonn, Germany
| | - Philipp Herrmann
- Department of Ophthalmology, University Hospital Bonn, Bonn, Germany; Center for Rare Diseases Bonn (ZSEB), University Hospital Bonn, Bonn, Germany
| | - Christian Betz
- Bioscientia Center for Human Genetics, Ingelheim, Germany
| | - Richard Caswell
- Genomics Laboratory, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom; Institute of Biomedical and Clinical Science, University of Exeter School of Medicine, Exeter, United Kingdom
| | - Victoria Nesbitt
- NHS Highly Specialised Service for Rare Mitochondrial Disorders, Nuffield Department of Women's & Reproductive Health, The Churchill Hospital, Oxford, United Kingdom
| | - Cornelia Kornblum
- Center for Rare Diseases Bonn (ZSEB), University Hospital Bonn, Bonn, Germany; Department of Neurology, Section of Neuromuscular Diseases, University Hospital Bonn, Bonn, Germany
| | - Peter Charbel Issa
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom; Nuffield Laboratory of Ophthalmology, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom.
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18
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Berger S, Shaw DR, Berben T, Ouboter HT, In 't Zandt MH, Frank J, Reimann J, Jetten MSM, Welte CU. Current production by non-methanotrophic bacteria enriched from an anaerobic methane-oxidizing microbial community. Biofilm 2021; 3:100054. [PMID: 34308332 PMCID: PMC8258643 DOI: 10.1016/j.bioflm.2021.100054] [Citation(s) in RCA: 6] [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: 01/29/2021] [Revised: 04/12/2021] [Accepted: 05/19/2021] [Indexed: 12/21/2022] Open
Abstract
In recent years, the externalization of electrons as part of respiratory metabolic processes has been discovered in many different bacteria and some archaea. Microbial extracellular electron transfer (EET) plays an important role in many anoxic natural or engineered ecosystems. In this study, an anaerobic methane-converting microbial community was investigated with regard to its potential to perform EET. At this point, it is not well-known if or how EET confers a competitive advantage to certain species in methane-converting communities. EET was investigated in a two-chamber electrochemical system, sparged with methane and with an applied potential of +400 mV versus standard hydrogen electrode. A biofilm developed on the working electrode and stable low-density current was produced, confirming that EET indeed did occur. The appearance and presence of redox centers at −140 to −160 mV and at −230 mV in the biofilm was confirmed by cyclic voltammetry scans. Metagenomic analysis and fluorescence in situ hybridization of the biofilm showed that the anaerobic methanotroph ‘Candidatus Methanoperedens BLZ2’ was a significant member of the biofilm community, but its relative abundance did not increase compared to the inoculum. On the contrary, the relative abundance of other members of the microbial community significantly increased (up to 720-fold, 7.2% of mapped reads), placing these microorganisms among the dominant species in the bioanode community. This group included Zoogloea sp., Dechloromonas sp., two members of the Bacteroidetes phylum, and the spirochete Leptonema sp. Genes encoding proteins putatively involved in EET were identified in Zoogloea sp., Dechloromonas sp. and one member of the Bacteroidetes phylum. We suggest that instead of methane, alternative carbon sources such as acetate were the substrate for EET. Hence, EET in a methane-driven chemolithoautotrophic microbial community seems a complex process in which interactions within the microbial community are driving extracellular electron transfer to the electrode.
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Affiliation(s)
- S Berger
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands
| | - D R Shaw
- Biological and Environmental Science and Engineering Division, Water Desalination and Reuse Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - T Berben
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands
| | - H T Ouboter
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - M H In 't Zandt
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Netherlands Earth System Science Center, Utrecht University, Utrecht, the Netherlands
| | - J Frank
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - J Reimann
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands
| | - M S M Jetten
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Netherlands Earth System Science Center, Utrecht University, Utrecht, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
| | - C U Welte
- Institute for Water and Wetland Research, Department of Microbiology, Radboud University, Nijmegen, the Netherlands.,Soehngen Institute of Anaerobic Microbiology, Radboud University, Nijmegen, the Netherlands
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19
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Rees M, Nikoopour R, Fukuzawa A, Kho AL, Fernandez-Garcia MA, Wraige E, Bodi I, Deshpande C, Özdemir Ö, Daimagüler HS, Pfuhl M, Holt M, Brandmeier B, Grover S, Fluss J, Longman C, Farrugia ME, Matthews E, Hanna M, Muntoni F, Sarkozy A, Phadke R, Quinlivan R, Oates EC, Schröder R, Thiel C, Reimann J, Voermans N, Erasmus C, Kamsteeg EJ, Konersman C, Grosmann C, McKee S, Tirupathi S, Moore SA, Wilichowski E, Hobbiebrunken E, Dekomien G, Richard I, Van den Bergh P, Domínguez-González C, Cirak S, Ferreiro A, Jungbluth H, Gautel M. Making sense of missense variants in TTN-related congenital myopathies. Acta Neuropathol 2021; 141:431-453. [PMID: 33449170 PMCID: PMC7882473 DOI: 10.1007/s00401-020-02257-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/20/2020] [Accepted: 12/20/2020] [Indexed: 12/15/2022]
Abstract
Mutations in the sarcomeric protein titin, encoded by TTN, are emerging as a common cause of myopathies. The diagnosis of a TTN-related myopathy is, however, often not straightforward due to clinico-pathological overlap with other myopathies and the prevalence of TTN variants in control populations. Here, we present a combined clinico-pathological, genetic and biophysical approach to the diagnosis of TTN-related myopathies and the pathogenicity ascertainment of TTN missense variants. We identified 30 patients with a primary TTN-related congenital myopathy (CM) and two truncating variants, or one truncating and one missense TTN variant, or homozygous for one TTN missense variant. We found that TTN-related myopathies show considerable overlap with other myopathies but are strongly suggested by a combination of certain clinico-pathological features. Presentation was typically at birth with the clinical course characterized by variable progression of weakness, contractures, scoliosis and respiratory symptoms but sparing of extraocular muscles. Cardiac involvement depended on the variant position. Our biophysical analyses demonstrated that missense mutations associated with CMs are strongly destabilizing and exert their effect when expressed on a truncating background or in homozygosity. We hypothesise that destabilizing TTN missense mutations phenocopy truncating variants and are a key pathogenic feature of recessive titinopathies that might be amenable to therapeutic intervention.
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Affiliation(s)
- Martin Rees
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
| | - Roksana Nikoopour
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
| | - Atsushi Fukuzawa
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
| | - Ay Lin Kho
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
| | - Miguel A Fernandez-Garcia
- Department of Paediatric Neurology, Evelina Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | - Elizabeth Wraige
- Department of Paediatric Neurology, Evelina Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | - Istvan Bodi
- Department of Clinical Neuropathology, King's College Hospital, London, UK
| | | | - Özkan Özdemir
- Centre for Molecular Medicine, University of Cologne, Cologne, Germany
- Department of Pediatrics, University Hospital Cologne and Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Hülya-Sevcan Daimagüler
- Centre for Molecular Medicine, University of Cologne, Cologne, Germany
- Department of Pediatrics, University Hospital Cologne and Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Mark Pfuhl
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
- School of Cardiovascular Medicine and Sciences, King's College London BHF Centre of Research Excellence, London, UK
| | - Mark Holt
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
- School of Cardiovascular Medicine and Sciences, King's College London BHF Centre of Research Excellence, London, UK
| | - Birgit Brandmeier
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
| | - Sarah Grover
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
| | - Joël Fluss
- Pediatric Neurology Unit, Paediatrics Subspecialties Service, Geneva Children's Hospital, Geneva, Switzerland
| | - Cheryl Longman
- West of Scotland Regional Genetics Service, Laboratory Medicine Building, Queen Elizabeth University Hospital, Glasgow, UK
| | | | - Emma Matthews
- MRC Neuromuscular Centre, National Hospital for Neurology and Neurosurgery, Queen's Square, London, UK
| | - Michael Hanna
- MRC Neuromuscular Centre, National Hospital for Neurology and Neurosurgery, Queen's Square, London, UK
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, Great Ormond Street Hospital for Children, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, Great Ormond Street Institute of Child Health, University College London, Great Ormond Street Hospital Trust, London, UK
| | - Anna Sarkozy
- Dubowitz Neuromuscular Centre, Great Ormond Street Hospital for Children, London, UK
| | - Rahul Phadke
- Dubowitz Neuromuscular Centre, Great Ormond Street Hospital for Children, London, UK
| | - Ros Quinlivan
- Dubowitz Neuromuscular Centre, Great Ormond Street Hospital for Children, London, UK
| | - Emily C Oates
- Dubowitz Neuromuscular Centre, Great Ormond Street Hospital for Children, London, UK
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sidney, Australia
- Kids Neuroscience Centre, Kids Research, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Rolf Schröder
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Christian Thiel
- Department of Genetics, University of Erlangen, Erlangen, Germany
| | - Jens Reimann
- Muscle Laboratory, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany
| | - Nicol Voermans
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Corrie Erasmus
- Department of Paediatric Neurology, Radboud University, Nijmegen, The Netherlands
| | - Erik-Jan Kamsteeg
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Chaminda Konersman
- UCSD, Rady Children's Hospital, and VA San Diego Healthcare System, San Diego, USA
| | | | - Shane McKee
- Northern Ireland Regional Genetics Service, Belfast City Hospital, Belfast, UK
| | - Sandya Tirupathi
- Department of Paediatric Neurology, Royal Belfast Hospital for Sick Children, Belfast, UK
| | - Steven A Moore
- Department of Pathology, The University of Iowa, Iowa City, IA, USA
| | | | - Elke Hobbiebrunken
- Department of Paediatric Neurology, University of Göttingen, Göttingen, Germany
| | | | - Isabelle Richard
- Genethon and UMR_S951, INSERM, Université Evry, Université Paris Saclay, Evry, 91002, Evry, France
| | - Peter Van den Bergh
- Neuromuscular Reference Centre, Department of Neurology, University Hospital Saint-Luc, Brussels, Belgium
| | | | - Sebahattin Cirak
- Centre for Molecular Medicine, University of Cologne, Cologne, Germany
- Department of Pediatrics, University Hospital Cologne and Faculty of Medicine, University of Cologne, Cologne, Germany
- Centre for Rare Diseases (ZSEK), University of Cologne, Cologne, Germany
| | - Ana Ferreiro
- Basic and Translational Myology Laboratory, Université de Paris, Paris, France
- Centre de Référence Des Maladies Neuromusculaires, APHP, Institut of Myology, GHU Pitié Salpêtrière- Charles Foix, Paris, France
| | - Heinz Jungbluth
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK
- Department of Paediatric Neurology, Evelina Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
- Department of Clinical and Basic Neuroscience, IoPPN, King's College London, London, UK
| | - Mathias Gautel
- Randall Centre for Cell and Molecular Biophysics, Muscle Biophysics, King's College London BHF Centre of Research Excellence, London, UK.
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20
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Hentschel A, Czech A, Münchberg U, Freier E, Schara-Schmidt U, Sickmann A, Reimann J, Roos A. Protein signature of human skin fibroblasts allows the study of the molecular etiology of rare neurological diseases. Orphanet J Rare Dis 2021; 16:73. [PMID: 33563298 PMCID: PMC7874489 DOI: 10.1186/s13023-020-01669-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 12/23/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The elucidation of pathomechanisms leading to the manifestation of rare (genetically caused) neurological diseases including neuromuscular diseases (NMD) represents an important step toward the understanding of the genesis of the respective disease and might help to define starting points for (new) therapeutic intervention concepts. However, these "discovery studies" are often limited by the availability of human biomaterial. Moreover, given that results of next-generation-sequencing approaches frequently result in the identification of ambiguous variants, testing of their pathogenicity is crucial but also depending on patient-derived material. METHODS Human skin fibroblasts were used to generate a spectral library using pH8-fractionation of followed by nano LC-MS/MS. Afterwards, Allgrove-patient derived fibroblasts were subjected to a data independent acquisition approach. In addition, proteomic signature of an enriched nuclear protein fraction was studied. Proteomic findings were confirmed by immunofluorescence in a muscle biopsy derived from the same patient and cellular lipid homeostasis in the cause of Allgrove syndrome was analysed by fluorescence (BODIPY-staining) and coherent anti-Stokes Raman scattering (CARS) microscopy. RESULTS To systematically address the question if human skin fibroblasts might serve as valuable biomaterial for (molecular) studies of NMD, we generated a protein library cataloguing 8280 proteins including a variety of such linked to genetic forms of motoneuron diseases, congenital myasthenic syndromes, neuropathies and muscle disorders. In silico-based pathway analyses revealed expression of a diversity of proteins involved in muscle contraction and such decisive for neuronal function and maintenance suggesting the suitability of human skin fibroblasts to study the etiology of NMD. Based on these findings, next we aimed to further demonstrate the suitability of this in vitro model to study NMD by a use case: the proteomic signature of fibroblasts derived from an Allgrove-patient was studied. Dysregulation of paradigmatic proteins could be confirmed in muscle biopsy of the patient and protein-functions could be linked to neurological symptoms known for this disease. Moreover, proteomic investigation of nuclear protein composition allowed the identification of protein-dysregulations according with structural perturbations observed in the muscle biopsy. BODIPY-staining on fibroblasts and CARS microscopy on muscle biopsy suggest altered lipid storage as part of the underlying disease etiology. CONCLUSIONS Our combined data reveal that human fibroblasts may serve as an in vitro system to study the molecular etiology of rare neurological diseases exemplified on Allgrove syndrome in an unbiased fashion.
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Affiliation(s)
- Andreas Hentschel
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Dortmund, Germany
| | - Artur Czech
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Dortmund, Germany
| | - Ute Münchberg
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Dortmund, Germany
| | - Erik Freier
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Dortmund, Germany
| | - Ulrike Schara-Schmidt
- Department of Pediatric Neurology, Faculty of Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Albert Sickmann
- Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Dortmund, Germany
| | - Jens Reimann
- Muscle Laboratory, Department of Neurology, University of Bonn, Medical Centre, Bonn, Germany
| | - Andreas Roos
- Department of Pediatric Neurology, Faculty of Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, ON, Canada.
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21
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Winkler M, von Landenberg C, Kornblum C, Reimann J. AUTOIMMUNE MYOPATHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.302] [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: 11/26/2022]
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22
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Winkler M, von Landenberg C, Kuchenbecker K, Reimann J, Kornblum C. AUTOPHAGIC MYOPATHIES / MYOFIBRILLAR MYOPATHIES / DISTAL MYOPATHIES / POMPE DISEASE. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.015] [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: 11/17/2022]
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23
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Sarparanta J, Jonson P, Vihola A, Luque H, Reimann J, Kornblum C, Udd B. HEREDITARY NEUROPATHIES & ALS. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.117] [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: 10/23/2022]
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24
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Pergande M, Motameny S, Özdemir Ö, Kreutzer M, Wang H, Daimagüler HS, Becker K, Karakaya M, Ehrhardt H, Elcioglu N, Ostojic S, Chao CM, Kawalia A, Duman Ö, Koy A, Hahn A, Reimann J, Schoner K, Schänzer A, Westhoff JH, Schwaibold EMC, Cossee M, Imbert-Bouteille M, von Pein H, Haliloglu G, Topaloglu H, Altmüller J, Nürnberg P, Thiele H, Heller R, Cirak S. The genomic and clinical landscape of fetal akinesia. Genet Med 2019; 22:511-523. [PMID: 31680123 DOI: 10.1038/s41436-019-0680-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [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: 06/29/2019] [Accepted: 10/01/2019] [Indexed: 01/01/2023] Open
Abstract
PURPOSE Fetal akinesia has multiple clinical subtypes with over 160 gene associations, but the genetic etiology is not yet completely understood. METHODS In this study, 51 patients from 47 unrelated families were analyzed using next-generation sequencing (NGS) techniques aiming to decipher the genomic landscape of fetal akinesia (FA). RESULTS We have identified likely pathogenic gene variants in 37 cases and report 41 novel variants. Additionally, we report putative pathogenic variants in eight cases including nine novel variants. Our work identified 14 novel disease-gene associations for fetal akinesia: ADSSL1, ASAH1, ASPM, ATP2B3, EARS2, FBLN1, PRG4, PRICKLE1, ROR2, SETBP1, SCN5A, SCN8A, and ZEB2. Furthermore, a sibling pair harbored a homozygous copy-number variant in TNNT1, an ultrarare congenital myopathy gene that has been linked to arthrogryposis via Gene Ontology analysis. CONCLUSION Our analysis indicates that genetic defects leading to primary skeletal muscle diseases might have been underdiagnosed, especially pathogenic variants in RYR1. We discuss three novel putative fetal akinesia genes: GCN1, IQSEC3 and RYR3. Of those, IQSEC3, and RYR3 had been proposed as neuromuscular disease-associated genes recently, and our findings endorse them as FA candidate genes. By combining NGS with deep clinical phenotyping, we achieved a 73% success rate of solved cases.
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Affiliation(s)
- Matthias Pergande
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Susanne Motameny
- University of Cologne, Cologne Center for Genomics CCG, Cologne, Germany
| | - Özkan Özdemir
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Mona Kreutzer
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Haicui Wang
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Hülya-Sevcan Daimagüler
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Kerstin Becker
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Mert Karakaya
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, University Hospital Cologne, Institute of Human Genetics, Cologne, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics and Neonatology, Justus-Liebig-University, Gießen, Germany
| | - Nursel Elcioglu
- Department of Pediatric Genetics, Marmara University Medical School, Istanbul, Turkey.,Eastern Mediterranean University Medical School, Mersin, Turkey
| | - Slavica Ostojic
- Department of Neurology, Mother and Child Health Care Institute of Serbia "Dr. Vukan Cupic", Belgrade, Serbia
| | - Cho-Ming Chao
- Department of General Pediatrics and Neonatology, Justus-Liebig-University, Gießen, Germany
| | - Amit Kawalia
- University of Cologne, Cologne Center for Genomics CCG, Cologne, Germany
| | - Özgür Duman
- Department of Pediatric Neurology, Akdeniz University Hospital, Antalya, Turkey
| | - Anne Koy
- University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany
| | - Andreas Hahn
- Department of Pediatric Neurology, Social Pediatrics and Epileptology, Justus-Liebig-University, Gießen, Germany
| | - Jens Reimann
- Department of Neurology, Rheinische Friedrich-Wilhelms-University, Bonn, Germany
| | - Katharina Schoner
- Institute of Pathology, Philipps University of Marburg, Marburg, Germany
| | - Anne Schänzer
- Institute of Neuropathology, Justus-Liebig-University, Gießen, Germany
| | - Jens H Westhoff
- Heidelberg University, University Children's Hospital Heidelberg, Department of Pediatrics, Heidelberg, Germany
| | | | - Mireille Cossee
- University of Montpellier, University Hospital of Montpellier, Molecular Diagnostic Laboratory, Montpellier, France
| | - Marion Imbert-Bouteille
- University of Montpellier, University Hospital of Montpellier, Medical Genetics Department, Montpellier, France
| | - Harald von Pein
- Johannes-Gutenberg University Mainz, University Medical Center Mainz, Institute of Neuropathology, Mainz, Germany
| | - Göknur Haliloglu
- Hacettepe University, Children's Hospital, Department of Pediatric Neurology, Ankara, Turkey
| | - Haluk Topaloglu
- Hacettepe University, Children's Hospital, Department of Pediatric Neurology, Ankara, Turkey
| | - Janine Altmüller
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, Cologne Center for Genomics CCG, Cologne, Germany
| | - Peter Nürnberg
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany.,University of Cologne, Cologne Center for Genomics CCG, Cologne, Germany
| | - Holger Thiele
- University of Cologne, Cologne Center for Genomics CCG, Cologne, Germany
| | - Raoul Heller
- University of Cologne, University Hospital Cologne, Institute of Human Genetics, Cologne, Germany.,Genetic Health Service NZ-Northern Hub, Auckland City Hospital, Auckland, New Zealand.,University of Cologne, Center for Rare Diseases Cologne (ZSEK), Cologne, Germany
| | - Sebahattin Cirak
- University of Cologne, Center for Molecular Medicine Cologne (CMMC), Cologne, Germany. .,University of Cologne, University Hospital Cologne and Faculty of Medicine, Department of Pediatrics, Cologne, Germany. .,University of Cologne, Center for Rare Diseases Cologne (ZSEK), Cologne, Germany.
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von Landenberg C, Kornblum C, Reimann J. EP.03Mevalonate kinase deficiency - a mimic of mitochondrial myopathy in clinic and muscle biopsy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.133] [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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26
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Akram M, Dietl A, Mersdorf U, Prinz S, Maalcke W, Keltjens J, Ferousi C, de Almeida NM, Reimann J, Kartal B, Jetten MSM, Parey K, Barends TRM. A 192-heme electron transfer network in the hydrazine dehydrogenase complex. Sci Adv 2019; 5:eaav4310. [PMID: 31001586 PMCID: PMC6469936 DOI: 10.1126/sciadv.aav4310] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 02/28/2019] [Indexed: 05/21/2023]
Abstract
Anaerobic ammonium oxidation (anammox) is a major process in the biogeochemical nitrogen cycle in which nitrite and ammonium are converted to dinitrogen gas and water through the highly reactive intermediate hydrazine. So far, it is unknown how anammox organisms convert the toxic hydrazine into nitrogen and harvest the extremely low potential electrons (-750 mV) released in this process. We report the crystal structure and cryo electron microscopy structures of the responsible enzyme, hydrazine dehydrogenase, which is a 1.7 MDa multiprotein complex containing an extended electron transfer network of 192 heme groups spanning the entire complex. This unique molecular arrangement suggests a way in which the protein stores and releases the electrons obtained from hydrazine conversion, the final step in the globally important anammox process.
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Affiliation(s)
- M. Akram
- Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany
| | - A. Dietl
- Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany
| | - U. Mersdorf
- Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany
| | - S. Prinz
- Department of Structural Biology, Max Planck Institute of Biophysics, Max-von-Laue-Strasse 3, 60438 Frankfurt am Main, Germany
| | - W. Maalcke
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - J. Keltjens
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - C. Ferousi
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - N. M. de Almeida
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - J. Reimann
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - B. Kartal
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - M. S. M. Jetten
- Department of Microbiology, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands
| | - K. Parey
- Department of Structural Biology, Max Planck Institute of Biophysics, Max-von-Laue-Strasse 3, 60438 Frankfurt am Main, Germany
- Corresponding author. (K.P.); (T.R.M.B.)
| | - T. R. M. Barends
- Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany
- Corresponding author. (K.P.); (T.R.M.B.)
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27
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Knuiman GJ, Küsters B, Eshuis L, Snoeck M, Lammens M, Heytens L, De Ridder W, Baets J, Scalco RS, Quinlivan R, Holton J, Bodi I, Wraige E, Radunovic A, von Landenberg C, Reimann J, Kamsteeg EJ, Sewry C, Jungbluth H, Voermans NC. The histopathological spectrum of malignant hyperthermia and rhabdomyolysis due to RYR1 mutations. J Neurol 2019; 266:876-887. [PMID: 30788618 PMCID: PMC6420893 DOI: 10.1007/s00415-019-09209-z] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/16/2019] [Accepted: 01/19/2019] [Indexed: 12/22/2022]
Abstract
Objective The histopathological features of malignant hyperthermia (MH) and non-anaesthetic (mostly exertional) rhabdomyolysis (RM) due to RYR1 mutations have only been reported in a few cases. Methods We performed a retrospective multi-centre cohort study focussing on the histopathological features of patients with MH or RM due to RYR1 mutations (1987–2017). All muscle biopsies were reviewed by a neuromuscular pathologist. Additional morphometric and electron microscopic analysis were performed where possible. Results Through the six participating centres we identified 50 patients from 46 families, including patients with MH (n = 31) and RM (n = 19). Overall, the biopsy of 90% of patients showed one or more myopathic features including: increased fibre size variability (n = 44), increase in the number of fibres with internal nuclei (n = 30), and type I fibre predominance (n = 13). Abnormalities on oxidative staining, generally considered to be more specifically associated with RYR1-related congenital myopathies, were observed in 52%, and included unevenness (n = 24), central cores (n = 7) and multi-minicores (n = 3). Apart from oxidative staining abnormalities more frequently observed in MH patients, the histopathological spectrum was similar between the two groups. There was no correlation between the presence of cores and the occurrence of clinically detectable weakness or presence of (likely) pathogenic variants. Conclusions Patients with RYR1-related MH and RM exhibit a similar histopathological spectrum, ranging from mild myopathic changes to cores and other features typical of RYR1-related congenital myopathies. Suggestive histopathological features may support RYR1 involvement, also in cases where the in vitro contracture test is not informative. Electronic supplementary material The online version of this article (10.1007/s00415-019-09209-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- G J Knuiman
- Department of Pathology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - B Küsters
- Department of Pathology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - L Eshuis
- Department of Pathology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - M Snoeck
- National MH Investigation Unit, Department of Anaesthesiology, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - M Lammens
- Department of Pathology, Antwerp University Hospital, University of Antwerp, Edegem, Belgium
| | - L Heytens
- Malignant Hyperthermia Research Unit, University of Antwerp, Antwerp, Belgium
| | - W De Ridder
- Neurogenetics Group, Center for Molecular Neurology, VIB, Antwerp, Belgium
- Laboratory of Neuromuscular Pathology, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
- Department of Neurology, Neuromuscular Reference Centre, Antwerp University Hospital, Antwerp, Belgium
| | - J Baets
- Neurogenetics Group, Center for Molecular Neurology, VIB, Antwerp, Belgium
- Laboratory of Neuromuscular Pathology, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
- Department of Neurology, Neuromuscular Reference Centre, Antwerp University Hospital, Antwerp, Belgium
| | - R S Scalco
- MRC Centre for Neuromuscular Diseases, Institute of Neurology, University College London, London, UK
| | - R Quinlivan
- MRC Centre for Neuromuscular Diseases, Institute of Neurology, University College London, London, UK
| | - J Holton
- MRC Centre for Neuromuscular Diseases, Institute of Neurology, University College London, London, UK
| | - I Bodi
- Department of Paediatric Neurology, Neuromuscular Service, Evelina Children's Hospital, Guy's and St Thomas' Hospital NHS Foundation Trust, London, UK
| | - E Wraige
- Department of Paediatric Neurology, Neuromuscular Service, Evelina Children's Hospital, Guy's and St Thomas' Hospital NHS Foundation Trust, London, UK
| | - A Radunovic
- Barts Neuromuscular Diseases Centre, Royal London Hospital, London, UK
| | - C von Landenberg
- Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany
| | - J Reimann
- Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany
| | - E-J Kamsteeg
- Department of Human Genetics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - C Sewry
- Dubowitz Neuromuscular Centre, UCL Institute of Child Health and Great Ormond Street Hospital for Children, London, UK
| | - H Jungbluth
- Department of Paediatric Neurology, Neuromuscular Service, Evelina Children's Hospital, Guy's and St Thomas' Hospital NHS Foundation Trust, London, UK
- Muscle Signalling Section, Randall Division for Cell and Molecular Biophysics, King's College, London, UK
- Department of Basic and Clinical Neuroscience, King's College, IoPPN, London, UK
| | - N C Voermans
- Department of Neurology, Radboud University Medical Centre, Nijmegen, The Netherlands.
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28
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Reimann J, Scholtes C, Cremer K, Schoenberger S, Kunz W. CONGENITAL MYOPATHIES: GENERAL AND RYR1. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.070] [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: 10/28/2022]
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29
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Reimann J, Schlauderer S, Schmid CP, Langer F, Baierl S, Kokh KA, Tereshchenko OE, Kimura A, Lange C, Güdde J, Höfer U, Huber R. Subcycle observation of lightwave-driven Dirac currents in a topological surface band. Nature 2018; 562:396-400. [DOI: 10.1038/s41586-018-0544-x] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 07/26/2018] [Indexed: 11/09/2022]
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Bedarf JR, Nelles M, Reimann J, Paus S, Zimmermann J. Teaching Video NeuroImages: Propriospinal myoclonus as a sequela of Guillain-Barré syndrome. Neurology 2018; 91:e297-e299. [PMID: 30012662 DOI: 10.1212/wnl.0000000000005827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Janis R Bedarf
- From the Departments of Neurology (J.R.B., J.R., S.P., J.Z.) and Radiology (M.N.), University of Bonn, Germany.
| | - Michael Nelles
- From the Departments of Neurology (J.R.B., J.R., S.P., J.Z.) and Radiology (M.N.), University of Bonn, Germany
| | - Jens Reimann
- From the Departments of Neurology (J.R.B., J.R., S.P., J.Z.) and Radiology (M.N.), University of Bonn, Germany
| | - Sebastian Paus
- From the Departments of Neurology (J.R.B., J.R., S.P., J.Z.) and Radiology (M.N.), University of Bonn, Germany
| | - Julian Zimmermann
- From the Departments of Neurology (J.R.B., J.R., S.P., J.Z.) and Radiology (M.N.), University of Bonn, Germany
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Lee Y, Jonson PH, Sarparanta J, Palmio J, Sarkar M, Vihola A, Evilä A, Suominen T, Penttilä S, Savarese M, Johari M, Minot MC, Hilton-Jones D, Maddison P, Chinnery P, Reimann J, Kornblum C, Kraya T, Zierz S, Sue C, Goebel H, Azfer A, Ralston SH, Hackman P, Bucelli RC, Taylor JP, Weihl CC, Udd B. TIA1 variant drives myodegeneration in multisystem proteinopathy with SQSTM1 mutations. J Clin Invest 2018; 128:1164-1177. [PMID: 29457785 DOI: 10.1172/jci97103] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [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: 08/29/2017] [Accepted: 01/09/2018] [Indexed: 12/14/2022] Open
Abstract
Multisystem proteinopathy (MSP) involves disturbances of stress granule (SG) dynamics and autophagic protein degradation that underlie the pathogenesis of a spectrum of degenerative diseases that affect muscle, brain, and bone. Specifically, identical mutations in the autophagic adaptor SQSTM1 can cause varied penetrance of 4 distinct phenotypes: amyotrophic lateral sclerosis (ALS), frontotemporal dementia, Paget's disease of the bone, and distal myopathy. It has been hypothesized that clinical pleiotropy relates to additional genetic determinants, but thus far, evidence has been lacking. Here, we provide evidence that a TIA1 (p.N357S) variant dictates a myodegenerative phenotype when inherited, along with a pathogenic SQSTM1 mutation. Experimentally, the TIA1-N357S variant significantly enhances liquid-liquid-phase separation in vitro and impairs SG dynamics in living cells. Depletion of SQSTM1 or the introduction of a mutant version of SQSTM1 similarly impairs SG dynamics. TIA1-N357S-persistent SGs have increased association with SQSTM1, accumulation of ubiquitin conjugates, and additional aggregated proteins. Synergistic expression of the TIA1-N357S variant and a SQSTM1-A390X mutation in myoblasts leads to impaired SG clearance and myotoxicity relative to control myoblasts. These findings demonstrate a pathogenic connection between SG homeostasis and ubiquitin-mediated autophagic degradation that drives the penetrance of an MSP phenotype.
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Affiliation(s)
- YouJin Lee
- Department of Neurology, Hope Center for Neurological Diseases, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Per Harald Jonson
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Jaakko Sarparanta
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Johanna Palmio
- Neuromuscular Research Center, Tampere University Hospital and University of Tampere, Tampere, Finland
| | - Mohona Sarkar
- Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Anna Vihola
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Anni Evilä
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Tiina Suominen
- Neuromuscular Research Center, Tampere University Hospital and University of Tampere, Tampere, Finland
| | - Sini Penttilä
- Neuromuscular Research Center, Tampere University Hospital and University of Tampere, Tampere, Finland
| | - Marco Savarese
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Mridul Johari
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Marie-Christine Minot
- Neuromuscular Competence Center, Centre Hospitalier Universitaire (CHU) de Rennes, Rennes, France
| | - David Hilton-Jones
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Paul Maddison
- Department of Neurology, University of Nottingham, Nottingham, United Kingdom
| | - Patrick Chinnery
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, United Kingdom.,Department of Clinical Neurosciences, Cambridge Biomedical Campus, University of Cambridge, Cambridge, United Kingdom
| | - Jens Reimann
- Department of Neurology, University Hospital of Bonn, Bonn, Germany
| | - Cornelia Kornblum
- Department of Neurology, University Hospital of Bonn, Bonn, Germany.,Centre for Rare Diseases Bonn (ZSEB), Department of Neurology, University Hospital of Bonn, Bonn, Germany
| | - Torsten Kraya
- Department of Neurology, Martin-Luther-Universität Halle-Wittenberg, Halle/Saale, Germany
| | - Stephan Zierz
- Department of Neurology, Martin-Luther-Universität Halle-Wittenberg, Halle/Saale, Germany
| | - Carolyn Sue
- Department of Neurogenetics, Kolling Institute of Medical Research, Royal North Shore Hospital and University of Sydney, St Leonard's, New South Wales, Australia
| | - Hans Goebel
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Asim Azfer
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital Edinburgh, United Kingdom
| | - Stuart H Ralston
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital Edinburgh, United Kingdom
| | - Peter Hackman
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Robert C Bucelli
- Department of Neurology, Hope Center for Neurological Diseases, Washington University School of Medicine, St. Louis, Missouri, USA
| | - J Paul Taylor
- Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.,Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
| | - Conrad C Weihl
- Department of Neurology, Hope Center for Neurological Diseases, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Bjarne Udd
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland.,Neuromuscular Research Center, Tampere University Hospital and University of Tampere, Tampere, Finland.,Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
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von Landenberg C, Kappes-Horn K, Stepien-Mering M, Reimann J. A diagnostic challenge of late onset adult merosinopathy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.061] [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: 11/26/2022]
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Reimann J, Kohlschmidt N, Tolksdorf K, Weis J, Kuchelmeister K, Roos A. Muscle Pathology as a Diagnostic Clue to Allgrove Syndrome. J Neuropathol Exp Neurol 2017; 76:337-341. [PMID: 28371804 DOI: 10.1093/jnen/nlx016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Allgrove or triple A syndrome is a rare autosomal recessive disorder that can present with a variable range of multi-system manifestations, including optic atrophy, cerebellar ataxia, upper and lower motoneuron signs and various neuropathic abnormalities. These cases are a diagnostic challenge, particularly when the eponymous combination of achalasia, Addisonianism and alacrima is incomplete. Therefore, it is in the differential diagnosis for multisystem conditions and should be known to pathologists who diagnose disorders of skeletal muscle. Here, we describe new findings in skeletal muscle histology from the case of a boy of consanguineous Turkish origin whose achalasia provided the only specific clinical clue to the diagnosis. These include myocyte nuclear abnormalities with partially abnormal anti-lamin A/C immunohistochemistry and altered nuclear ultrastructure but without overt abnormalities of nuclear pore morphology. In this case, the condition was associated with a hitherto unreported c.762delC mutation in the nucleoporin gene AAAS.
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Affiliation(s)
- Jens Reimann
- From Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany (JR, KT), Institute of Clinical Genetics, Bonn, Germany (NK), Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany (JW, AR), Department of Neuropathology, University of Bonn Medical Centre, Bonn, Germany (KK), Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Department of Bioanalytics, Tissue Omics group, Dortmund, Germany (AR), John Walton Muscular Dystrophy Research Centre (JWMDRC), Newcastle University, International Centre for Life, Central Parkway, UK, Newcastle upon Tyne (AR)
| | - Nicolai Kohlschmidt
- From Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany (JR, KT), Institute of Clinical Genetics, Bonn, Germany (NK), Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany (JW, AR), Department of Neuropathology, University of Bonn Medical Centre, Bonn, Germany (KK), Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Department of Bioanalytics, Tissue Omics group, Dortmund, Germany (AR), John Walton Muscular Dystrophy Research Centre (JWMDRC), Newcastle University, International Centre for Life, Central Parkway, UK, Newcastle upon Tyne (AR)
| | - Karen Tolksdorf
- From Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany (JR, KT), Institute of Clinical Genetics, Bonn, Germany (NK), Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany (JW, AR), Department of Neuropathology, University of Bonn Medical Centre, Bonn, Germany (KK), Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Department of Bioanalytics, Tissue Omics group, Dortmund, Germany (AR), John Walton Muscular Dystrophy Research Centre (JWMDRC), Newcastle University, International Centre for Life, Central Parkway, UK, Newcastle upon Tyne (AR)
| | - Joachim Weis
- From Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany (JR, KT), Institute of Clinical Genetics, Bonn, Germany (NK), Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany (JW, AR), Department of Neuropathology, University of Bonn Medical Centre, Bonn, Germany (KK), Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Department of Bioanalytics, Tissue Omics group, Dortmund, Germany (AR), John Walton Muscular Dystrophy Research Centre (JWMDRC), Newcastle University, International Centre for Life, Central Parkway, UK, Newcastle upon Tyne (AR)
| | - Klaus Kuchelmeister
- From Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany (JR, KT), Institute of Clinical Genetics, Bonn, Germany (NK), Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany (JW, AR), Department of Neuropathology, University of Bonn Medical Centre, Bonn, Germany (KK), Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Department of Bioanalytics, Tissue Omics group, Dortmund, Germany (AR), John Walton Muscular Dystrophy Research Centre (JWMDRC), Newcastle University, International Centre for Life, Central Parkway, UK, Newcastle upon Tyne (AR)
| | - Andreas Roos
- From Muscle Lab, Department of Neurology, University of Bonn Medical Centre, Bonn, Germany (JR, KT), Institute of Clinical Genetics, Bonn, Germany (NK), Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany (JW, AR), Department of Neuropathology, University of Bonn Medical Centre, Bonn, Germany (KK), Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V, Department of Bioanalytics, Tissue Omics group, Dortmund, Germany (AR), John Walton Muscular Dystrophy Research Centre (JWMDRC), Newcastle University, International Centre for Life, Central Parkway, UK, Newcastle upon Tyne (AR)
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Cordts I, Bodart N, Hartmann K, Karagiorgou K, Tzartos JS, Mei L, Reimann J, Van Damme P, Rivner MH, Vigneron A, Weis J, Schulz JB, Tzartos SJ, Claeys KG. Screening for lipoprotein receptor-related protein 4-, agrin-, and titin-antibodies and exploring the autoimmune spectrum in myasthenia gravis. J Neurol 2017; 264:1193-1203. [DOI: 10.1007/s00415-017-8514-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/24/2017] [Accepted: 05/08/2017] [Indexed: 01/09/2023]
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Affiliation(s)
- J. Reimann
- Kernforschungszentrum Karlsruhe GmbH, Institut für Reaktorbauelemente Postfach 3640, 7500 Karlsruhe 1, Federal Republic of Germany
| | - M. Khan
- Kernforschungszentrum Karlsruhe GmbH, Institut für Reaktorbauelemente Postfach 3640, 7500 Karlsruhe 1, Federal Republic of Germany
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Reimann J, Lehmann D, Hardy SA, Falkous G, Knowles CVY, Jones RL, Kunz WS, Taylor RW, Kornblum C. Camptocormia and shuffling gait due to a novel MT-TV mutation: Diagnostic pitfalls. Neurol Genet 2017; 3:e147. [PMID: 28396884 PMCID: PMC5384303 DOI: 10.1212/nxg.0000000000000147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/24/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Jens Reimann
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Diana Lehmann
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Steven A Hardy
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin Falkous
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Charlotte V Y Knowles
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Rachel L Jones
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Wolfram S Kunz
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Robert W Taylor
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Cornelia Kornblum
- Department of Neurology (J.R., C.K.), Department of Epileptology (W.S.K.), Life and Brain Centre (W.S.K.), and Centre for Rare Diseases Bonn (ZSEB) (C.K.), University Hospital of Bonn, Germany; Department of Neurology (D.L.), University of Halle/S., Germany; and Wellcome Trust Centre for Mitochondrial Research (D.L., S.A.H., G.F., C.V.Y.K., R.L.J., R.W.T.), Institute of Neuroscience, The Medical School, Newcastle University, Newcastle upon Tyne, UK
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Reimann J, Kappes-Horn K, Tolksdorf K, Kornblum C. Diagnostic implications of three cases of skeletal muscle light-chain (AL) amyloidosis. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.441] [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: 11/26/2022]
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Whiting CV, Williams AM, Claesson MH, Bregenholt S, Reimann J, Bland PW. Transforming Growth Factor-β Messenger RNA and Protein in Murine Colitis. J Histochem Cytochem 2016; 49:727-38. [PMID: 11373319 DOI: 10.1177/002215540104900606] [Citation(s) in RCA: 8] [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: 01/07/2023] Open
Abstract
Using a CD4+ T-cell-transplanted SCID mouse model of colitis, we have analyzed TGF-β transcription and translation in advanced disease. By in situ hybridization, the epithelium of both control and inflamed tissues transcribed TGF-β1 and TGF-β3 mRNAs, but both were expressed significantly farther along the crypt axis in disease. Control lamina propria cells transcribed little TGF-β1 or TGF-β3 mRNA, but in inflamed tissues many cells expressed mRNA for both isoforms. No TGF-β2 message was detected in either control or inflamed tissues. Immunohistochemistry for latent and active TGF-β1 showed that all cells produced perinuclear latent TGF-β1. The epithelial cell basal latent protein resulted in only low levels of subepithelial active protein, which co-localized with collagen IV and laminin in diseased and control tissue. Infiltrating cells expressed very low levels of active TGF-β. By ELISA, very low levels (0–69 pg/mg) of soluble total or active TGF-β were detected in hypotonic tissue lysates. TGF-β1 and TGF-β3 are produced by SCID mouse colon and transcription is increased in the colitis caused by transplantation of CD4+ T-cells, but this does not result in high levels of soluble active protein. Low levels of active TGF-β may be a factor contributing to unresolved inflammation.
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Affiliation(s)
- C V Whiting
- Department of Clinical Veterinary Science, University of Bristol, Bristol, United Kingdom.
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Kuroda K, Reimann J, Güdde J, Höfer U. Generation of Transient Photocurrents in the Topological Surface State of Sb_{2}Te_{3} by Direct Optical Excitation with Midinfrared Pulses. Phys Rev Lett 2016; 116:076801. [PMID: 26943549 DOI: 10.1103/physrevlett.116.076801] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Indexed: 06/05/2023]
Abstract
We combine tunable midinfrared (mid-IR) pump pulses with time- and angle-resolved two-photon photoemission to study ultrafast photoexcitation of the topological surface state (TSS) of Sb_{2}Te_{3}. It is revealed that mid-IR pulses permit a direct excitation from the occupied to the unoccupied part of the TSS across the Dirac point. The novel optical coupling induces asymmetric transient populations of the TSS at ±k_{∥}, which reflects a macroscopic photoexcited electric surface current. By observing the decay of the asymmetric population, we directly investigate the dynamics of the long-lived photocurrent in the time domain. Our discovery promises important advantages of photoexcitation by mid-IR pulses for spintronic applications.
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Affiliation(s)
- K Kuroda
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032 Marburg, Germany
| | - J Reimann
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032 Marburg, Germany
| | - J Güdde
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032 Marburg, Germany
| | - U Höfer
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, 35032 Marburg, Germany
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Hallmann K, Kudin AP, Zsurka G, Kornblum C, Reimann J, Stüve B, Waltz S, Hattingen E, Thiele H, Nürnberg P, Rüb C, Voos W, Kopatz J, Neumann H, Kunz WS. Loss of the smallest subunit of cytochrome c oxidase, COX8A, causes Leigh-like syndrome and epilepsy. ACTA ACUST UNITED AC 2015; 139:338-45. [PMID: 26685157 DOI: 10.1093/brain/awv357] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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: 07/14/2015] [Accepted: 10/21/2015] [Indexed: 11/15/2022]
Abstract
Isolated cytochrome c oxidase (complex IV) deficiency is one of the most frequent respiratory chain defects in humans and is usually caused by mutations in proteins required for assembly of the complex. Mutations in nuclear-encoded structural subunits are very rare. In a patient with Leigh-like syndrome presenting with leukodystrophy and severe epilepsy, we identified a homozygous splice site mutation in COX8A, which codes for the ubiquitously expressed isoform of subunit VIII, the smallest nuclear-encoded subunit of complex IV. The mutation, affecting the last nucleotide of intron 1, leads to aberrant splicing, a frame-shift in the highly conserved exon 2, and decreased amount of the COX8A transcript. The loss of the wild-type COX8A protein severely impairs the stability of the entire cytochrome c oxidase enzyme complex and manifests in isolated complex IV deficiency in skeletal muscle and fibroblasts, similar to the frequent c.845_846delCT mutation in the assembly factor SURF1 gene. Stability and activity of complex IV could be rescued in the patient's fibroblasts by lentiviral expression of wild-type COX8A. Our findings demonstrate that COX8A is indispensable for function of human complex IV and its mutation causes human disease.
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Affiliation(s)
- Kerstin Hallmann
- 1 Department of Epileptology and Life and Brain Centre, University of Bonn, Bonn, Germany
| | - Alexei P Kudin
- 1 Department of Epileptology and Life and Brain Centre, University of Bonn, Bonn, Germany
| | - Gábor Zsurka
- 1 Department of Epileptology and Life and Brain Centre, University of Bonn, Bonn, Germany
| | | | - Jens Reimann
- 2 Department of Neurology, University of Bonn, Bonn, Germany
| | | | | | - Elke Hattingen
- 4 Department of Radiology, Division of Neuroradiology, University of Bonn, Bonn, Germany
| | - Holger Thiele
- 5 Cologne Centre for Genomics (CCG), University of Cologne, Cologne, Germany
| | - Peter Nürnberg
- 5 Cologne Centre for Genomics (CCG), University of Cologne, Cologne, Germany 6 Centre for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany 7 Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Cornelia Rüb
- 8 Institut für Biochemie und Molekularbiologie, University of Bonn, Bonn, Germany
| | - Wolfgang Voos
- 8 Institut für Biochemie und Molekularbiologie, University of Bonn, Bonn, Germany
| | - Jens Kopatz
- 9 Neural Regeneration Group, Institute of Reconstructive Neurobiology, University of Bonn, Bonn, Germany
| | - Harald Neumann
- 9 Neural Regeneration Group, Institute of Reconstructive Neurobiology, University of Bonn, Bonn, Germany
| | - Wolfram S Kunz
- 1 Department of Epileptology and Life and Brain Centre, University of Bonn, Bonn, Germany
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Merkel C, Boy N, Kappes-Horn K, Reimann J. Not motoneuron disease – a case of late-onset multiple acyl-CoA dehydrogenase deficiency. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.073] [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]
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Merkel C, Wattjes M, Reimann J, Kornblum C. P.18.12 Histological and magnetic resonance imaging findings of Vastus Lateralis in Myotonic Dystrophies: Do they match up? Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.681] [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: 11/30/2022]
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Claeys K, Gorodinskaya O, Handt S, Kress W, Kornblum C, Reimann J, Kuhl C, Schulz J, Weis J. P.5.15 Diagnostic challenge and therapeutic dilemma in necrotizing myopathy. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.467] [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: 10/26/2022]
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Claeys KG, Gorodinskaya O, Handt S, Reimann J, Kress W, Kornblum C, Kuhl C, Schulz JB, Weis J. Diagnostic challenge and therapeutic dilemma in necrotizing myopathy. Neurology 2013; 81:932-5. [DOI: 10.1212/wnl.0b013e3182a35285] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Maerkens A, Kley RA, Olivé M, Theis V, van der Ven PFM, Reimann J, Milting H, Schreiner A, Uszkoreit J, Eisenacher M, Barkovits K, Güttsches AK, Tonillo J, Kuhlmann K, Meyer HE, Schröder R, Tegenthoff M, Fürst DO, Müller T, Goldfarb LG, Vorgerd M, Marcus K. Differential proteomic analysis of abnormal intramyoplasmic aggregates in desminopathy. J Proteomics 2013; 90:14-27. [PMID: 23639843 DOI: 10.1016/j.jprot.2013.04.026] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [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: 11/26/2012] [Revised: 04/03/2013] [Accepted: 04/18/2013] [Indexed: 11/27/2022]
Abstract
UNLABELLED Desminopathy is a subtype of myofibrillar myopathy caused by desmin mutations and characterized by protein aggregates accumulating in muscle fibers. The aim of this study was to assess the protein composition of these aggregates. Aggregates and intact myofiber sections were obtained from skeletal muscle biopsies of five desminopathy patients by laser microdissection and analyzed by a label-free spectral count-based proteomic approach. We identified 397 proteins with 22 showing significantly higher spectral indices in aggregates (ratio >1.8, p<0.05). Fifteen of these proteins not previously reported as specific aggregate components provide new insights regarding pathomechanisms of desminopathy. Results of proteomic analysis were supported by immunolocalization studies and parallel reaction monitoring. Three mutant desmin variants were detected directly on the protein level as components of the aggregates, suggesting their direct involvement in aggregate-formation and demonstrating for the first time that proteomic analysis can be used for direct identification of a disease-causing mutation in myofibrillar myopathy. Comparison of the proteomic results in desminopathy with our previous analysis of aggregate composition in filaminopathy, another myofibrillar myopathy subtype, allows to determine subtype-specific proteomic profile that facilitates identification of the specific disorder. BIOLOGICAL SIGNIFICANCE Our proteomic analysis provides essential new insights in the composition of pathological protein aggregates in skeletal muscle fibers of desminopathy patients. The results contribute to a better understanding of pathomechanisms in myofibrillar myopathies and provide the basis for hypothesis-driven studies. The detection of specific proteomic profiles in different myofibrillar myopathy subtypes indicates that proteomic analysis may become a useful tool in differential diagnosis of protein aggregate myopathies.
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Affiliation(s)
- A Maerkens
- Department of Neurology, Neuromuscular Centre Ruhrgebiet, University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
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Mokbel N, Ilkovski B, Kreissl M, Memo M, Jeffries CM, Marttila M, Lehtokari VL, Lemola E, Grönholm M, Yang N, Menard D, Marcorelles P, Echaniz-Laguna A, Reimann J, Vainzof M, Monnier N, Ravenscroft G, McNamara E, Nowak KJ, Laing NG, Wallgren-Pettersson C, Trewhella J, Marston S, Ottenheijm C, North KN, Clarke NF. K7del is a common TPM2 gene mutation associated with nemaline myopathy and raised myofibre calcium sensitivity. ACTA ACUST UNITED AC 2013; 136:494-507. [PMID: 23378224 DOI: 10.1093/brain/aws348] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mutations in the TPM2 gene, which encodes β-tropomyosin, are an established cause of several congenital skeletal myopathies and distal arthrogryposis. We have identified a TPM2 mutation, p.K7del, in five unrelated families with nemaline myopathy and a consistent distinctive clinical phenotype. Patients develop large joint contractures during childhood, followed by slowly progressive skeletal muscle weakness during adulthood. The TPM2 p.K7del mutation results in the loss of a highly conserved lysine residue near the N-terminus of β-tropomyosin, which is predicted to disrupt head-to-tail polymerization of tropomyosin. Recombinant K7del-β-tropomyosin incorporates poorly into sarcomeres in C2C12 myotubes and has a reduced affinity for actin. Two-dimensional gel electrophoresis of patient muscle and primary patient cultured myotubes showed that mutant protein is expressed but incorporates poorly into sarcomeres and likely accumulates in nemaline rods. In vitro studies using recombinant K7del-β-tropomyosin and force measurements from single dissected patient myofibres showed increased myofilament calcium sensitivity. Together these data indicate that p.K7del is a common recurrent TPM2 mutation associated with mild nemaline myopathy. The p.K7del mutation likely disrupts head-to-tail polymerization of tropomyosin, which impairs incorporation into sarcomeres and also affects the equilibrium of the troponin/tropomyosin-dependent calcium switch of muscle. Joint contractures may stem from chronic muscle hypercontraction due to increased myofibrillar calcium sensitivity while declining strength in adulthood likely arises from other mechanisms, such as myofibre decompensation and fatty infiltration. These results suggest that patients may benefit from therapies that reduce skeletal muscle calcium sensitivity, and we highlight late muscle decompensation as an important cause of morbidity.
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Affiliation(s)
- Nancy Mokbel
- Institute for Neuroscience and Muscle Research, Children’s Hospital at Westmead, Sydney, NSW 2145, Australia
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Esser D, Pham TK, Reimann J, Albers SV, Siebers B, Wright PC. Change of carbon source causes dramatic effects in the phospho-proteome of the archaeon Sulfolobus solfataricus. J Proteome Res 2012; 11:4823-33. [PMID: 22639831 DOI: 10.1021/pr300190k] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Protein phosphorylation is known to occur in Archaea. However, knowledge of phosphorylation in the third domain of life is rather scarce. Homology-based searches of archaeal genome sequences reveals the absence of two-component systems in crenarchaeal genomes but the presence of eukaryotic-like protein kinases and protein phosphatases. Here, the influence of the offered carbon source (glucose versus tryptone) on the phospho-proteome of Sulfolobus solfataricus P2 was studied by precursor acquisition independent from ion count (PAcIFIC). In comparison to previous phospho-proteome studies, a high number of phosphorylation sites (1318) located on 690 phospho-peptides from 540 unique phospho-proteins were detected, thus increasing the number of currently known archaeal phospho-proteins from 80 to 621. Furthermore, a 25.8/20.6/53.6 Ser/Thr/Tyr percentage ratio with an unexpectedly high predominance of tyrosine phosphorylation was detected. Phospho-proteins in most functional classes (21 out of 26 arCOGs) were identified, suggesting an important regulatory role in S. solfataricus. Focusing on the central carbohydrate metabolism in response to the offered carbon source, significant changes were observed. The observed complex phosphorylation pattern hints at an important physiological function of protein phosphorylation in control of the central carbohydrate metabolism, which might particularly operate in channeling carbon flux into the respective metabolic pathways.
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Affiliation(s)
- D Esser
- Molecular Enzyme Technology and Biochemistry, Biofilm Centre, Faculty of Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany
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Schirmbeck R, von Kampen J, Metzger K, Wild J, Grüner B, Schleef M, Kröger A, Hauser H, Reimann J. DNA-Based Vaccination with Polycistronic Expression Plasmids. Methods Mol Med 2012; 29:313-22. [PMID: 21374331 DOI: 10.1385/1-59259-688-6:313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
DNA-based vaccination is a potent technique to prime cellular (T-cell mediated) immune responses (reviewed in 1). Many details of the priming of T-cell precursors by antigen translated from injected expression plasmid DNA are unknown. The relevant cell that is transfected in situ after DNA vaccination and that can process and present the protein in an immunogenic form has not yet been identified. Alternatively, the transfected cell may initiate 'cross-priming' in vivo by transferring processed antigen to a professional antigen-presenting cell (APC).
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Affiliation(s)
- R Schirmbeck
- Institute of Medical Microbiology and Immunology, Universität Ulm, Ulm (Donau), Germany
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Ettwig K, Speth D, Reimann J, Wu M, Jetten M, Keltjens J. Bacterial oxygen production in the dark. Biochimica et Biophysica Acta (BBA) - Bioenergetics 2012. [DOI: 10.1016/j.bbabio.2012.06.406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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