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Conte M, Poggio P, Monti M, Petraglia L, Cabaro S, Bruzzese D, Comentale G, Caruso A, Grimaldi M, Zampella E, Gencarelli A, Cervasio MR, Cozzolino F, Monaco V, Myasoedova V, Valerio V, Ferro A, Insabato L, Bellino M, Galasso G, Graziani F, Pucci P, Formisano P, Pilato E, Cuocolo A, Perrone Filardi P, Leosco D, Parisi V. Isolated Valve Amyloid Deposition in Aortic Stenosis: Potential Clinical and Pathophysiological Relevance. Int J Mol Sci 2024; 25:1171. [PMID: 38256243 PMCID: PMC10815971 DOI: 10.3390/ijms25021171] [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: 11/27/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
Amyloid deposition within stenotic aortic valves (AVs) also appears frequent in the absence of cardiac amyloidosis, but its clinical and pathophysiological relevance has not been investigated. We will elucidate the rate of isolated AV amyloid deposition and its potential clinical and pathophysiological significance in aortic stenosis (AS). In 130 patients without systemic and/or cardiac amyloidosis, we collected the explanted AVs during cardiac surgery: 57 patients with calcific AS and 73 patients with AV insufficiency (41 with AV sclerosis and 32 without, who were used as controls). Amyloid deposition was found in 21 AS valves (37%), 4 sclerotic AVs (10%), and none of the controls. Patients with and without isolated AV amyloid deposition had similar clinical and echocardiographic characteristics and survival rates. Isolated AV amyloid deposition was associated with higher degrees of AV fibrosis (p = 0.0082) and calcification (p < 0.0001). Immunohistochemistry analysis suggested serum amyloid A1 (SAA1), in addition to transthyretin (TTR), as the protein possibly involved in AV amyloid deposition. Circulating SAA1 levels were within the normal range in all groups, and no difference was observed in AS patients with and without AV amyloid deposition. In vitro, AV interstitial cells (VICs) were stimulated with interleukin (IL)-1β which induced increased SAA1-mRNA both in the control VICs (+6.4 ± 0.5, p = 0.02) and the AS VICs (+7.6 ± 0.5, p = 0.008). In conclusion, isolated AV amyloid deposition is frequent in the context of AS, but it does not appear to have potential clinical relevance. Conversely, amyloid deposition within AV leaflets, probably promoted by local inflammation, could play a role in AS pathophysiology.
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Affiliation(s)
- Maddalena Conte
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
- Casa di Cura San Michele, 81024 Caserta, Italy; (A.C.)
| | - Paolo Poggio
- Centro Cardiologico Monzino IRCCS, 20138 Milan, Italy; (P.P.)
| | - Maria Monti
- Dipartimento di Scienze Chimiche, University of Naples Federico II, 5, 80131 Naples, Italy (F.C.); (V.M.)
- CEINGE Biotecnologie Avanzate, Via Gaetano Salvatore 486, 80145 Naples, Italy
| | - Laura Petraglia
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
| | - Serena Cabaro
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
| | - Dario Bruzzese
- Department of Public Health, University of Naples Federico II, 5, 80131 Naples, Italy
| | - Giuseppe Comentale
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | | | | | - Emilia Zampella
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Annarita Gencarelli
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Maria Rosaria Cervasio
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Flora Cozzolino
- Dipartimento di Scienze Chimiche, University of Naples Federico II, 5, 80131 Naples, Italy (F.C.); (V.M.)
- CEINGE Biotecnologie Avanzate, Via Gaetano Salvatore 486, 80145 Naples, Italy
| | - Vittoria Monaco
- Dipartimento di Scienze Chimiche, University of Naples Federico II, 5, 80131 Naples, Italy (F.C.); (V.M.)
- CEINGE Biotecnologie Avanzate, Via Gaetano Salvatore 486, 80145 Naples, Italy
| | | | | | - Adele Ferro
- Institute of Biostructure and Bioimaging, CNR, 80145 Naples, Italy
| | - Luigi Insabato
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Michele Bellino
- Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi, 84081 Salerno, Italy
| | - Gennaro Galasso
- Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi, 84081 Salerno, Italy
| | - Francesca Graziani
- Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy;
| | - Pietro Pucci
- Dipartimento di Scienze Chimiche, University of Naples Federico II, 5, 80131 Naples, Italy (F.C.); (V.M.)
| | - Pietro Formisano
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
| | - Emanuele Pilato
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Alberto Cuocolo
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Pasquale Perrone Filardi
- Department of Advanced Biomedical Science, University of Naples Federico II, 5, 80131 Naples, Italy (A.C.)
| | - Dario Leosco
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
| | - Valentina Parisi
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini, 5, 80131 Naples, Italy
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