1
|
Mattig I, Heidecker B, Tschöpe C, Messroghli D, Eurich D, Kleefeld F, Gaedeke J, Stenzel W, Schmidt HHJ, Röcken C, Knebel F, Hahn K. Progressive Hereditary Transthyretin-Related Amyloidosis (ATTRv) Aggravated by ATTR Wild-Type and Complement Activation. J Neuropathol Exp Neurol 2022; 81:299-303. [DOI: 10.1093/jnen/nlab138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Isabel Mattig
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Campus Charité Mitte, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
| | - Bettina Heidecker
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik für Kardiologie, Campus Benjamin Franklin, Berlin, Germany
| | - Carsten Tschöpe
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik mit Schwerpunkt Kardiologie, Virchow Klinikum Campus, Berlin, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
| | - Daniel Messroghli
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Deutsches Herzzentrum Berlin, Klinik für Innere Medizin—Kardiologie, Germany
| | - Dennis Eurich
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Chirurgische Klinik, Campus Virchow Klinikum, Berlin, Germany
| | - Felix Kleefeld
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Klinik für Neurologie mit Experimenteller Neurologie, Charité Campus Mitte, Berlin, Germany
| | - Jens Gaedeke
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik mit Schwerpunkt Nephrologie und Internistische Intensivmedizin, Berlin, Germany
| | - Werner Stenzel
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Neuropathologie, Berlin, Germany
| | - Hartmut H -J Schmidt
- Klinik für Gastroenterologie und Hepatologie, Universitätsklinikum Essen, Germany
| | - Christoph Röcken
- Department of Pathology, University Hospital Schleswig-Holstein, Campus, Kiel, Germany
| | - Fabian Knebel
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Campus Charité Mitte, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Germany
- Sana Klinikum Lichtenberg, Innere Medizin II: Schwerpunkt Kardiologie, Berlin, Germany
| | - Katrin Hahn
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Amyloidosis Center Charité Berlin (ACCB), Berlin, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Klinik für Neurologie mit Experimenteller Neurologie, Charité Campus Mitte, Berlin, Germany
| |
Collapse
|
2
|
Hinderhofer K, Obermaier C, Hegenbart U, Schönland S, Seidler M, Sommer-Ort I, Barth U. New sequence variants in patients affected by amyloidosis show transthyretin instability by isoelectric focusing. Amyloid 2019; 26:85-93. [PMID: 31074293 DOI: 10.1080/13506129.2019.1598358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The plasma protein transthyretin (TTR) can aggregate into insoluble amyloid fibrils causing systemic amyloidosis (ATTR amyloidosis) in patients carrying a variant TTR protein. If new variants arise, it is crucial to clarify whether they are disease-associated or benign. In this study, we further functionally characterize three new and unclassified TTR variants (Thr40Asn, Phe64Val and the described but not functionally assessed variant Leu12Val), using a simplified, fast isoelectric focusing (IEF) approach. After validating the system with known TTR variants, we assessed the sera of five patients carrying these new TTR variants in a heterozygous state. All three variants showed aberrant banding patterns that were similar to those of other well-characterized TTR variants, including the common Val30Met variant that causes ATTR amyloidosis. In addition to a clear band corresponding to monomeric wild-type TTR, we observed an additional variant band at the cathodal side of the IEF gel. These results indicate conformational instability of the new Thr40Asn, Phe64Val and Leu12Val variants. Together with the clinical and immunohistological data of these patients and affected family members, as well as the absence of these variants in human genetic mutation databases, our results strongly hint that these variants are amyloidogenic and therefore probably disease-associated. These findings have implications for patient therapy and for genetic counselling of family members.
Collapse
Affiliation(s)
- Katrin Hinderhofer
- a Institute of Human Genetics, Heidelberg University Hospital , Heidelberg , Germany
| | | | - Ute Hegenbart
- c Department of Medicine V (Hematology, Oncology and Rheumatology), Amyloidosis Center Heidelberg, Heidelberg University Hospital , Heidelberg , Germany
| | - Stefan Schönland
- c Department of Medicine V (Hematology, Oncology and Rheumatology), Amyloidosis Center Heidelberg, Heidelberg University Hospital , Heidelberg , Germany
| | - Marc Seidler
- b SERVA Electrophoresis GmbH , Heidelberg , Germany
| | - Iris Sommer-Ort
- a Institute of Human Genetics, Heidelberg University Hospital , Heidelberg , Germany
| | - Ulrike Barth
- a Institute of Human Genetics, Heidelberg University Hospital , Heidelberg , Germany
| |
Collapse
|