Zusammenfassung
Die Therapie valvulärer Herzerkrankungen hat seit der Einführung von Herzklappenprothesen und insbesondere durch die Weiterentwicklung schonender chirurgischer Verfahren wesentliche Fortschritte erfahren und gehört heute zu den Standardeingriffen in der Herzchirurgie. Da jedoch die eingesetzten Prothesen durch eine limitierte Haltbarkeit (biologische Prothesen) bzw. durch eine lebenslang notwendige Antikoagulation (mechanische Prothesen) relevante Limitationen aufweisen, wird in den letzten Jahren zunehmend an der Entwicklung von lebendigen, zur Regeneration befähigten Herzklappenprothesen im Sinne der Gewebezucht („tissue engineering“) gearbeitet. Dabei konkurrieren aktuell verschiedene Konzepte miteinander, die auf den Einsatz biologischer oder synthetischer Gerüstmaterialien und auf die Zuhilfenahme von zellulären oder extrazellulären Induktoren zur Weiterentwicklung und Reifung der Prothesen nach Implantation im Körper des Empfängers bauen. Vor allem dezellularisierte Spenderklappen kommen bereits heute zunehmend in der Klinik zum Einsatz und versprechen eine weitere Verbesserung der klinischen Ergebnisse sowohl bei jungen als auch bei älteren Patienten.
Abstract
With the introduction of heart valve prostheses cardiac valvular disease has become much more accessible to therapeutic options. However, currently available prostheses display significant limitations, such as limited long-term durability (biological prostheses) and a long-term necessity for anticoagulation therapy. Hence, alternative prosthesis types have been extensively explored in recent years particularly aiming at the development of vital and regenerative prostheses by means of tissue engineering. In the scientific field, different competing concepts have been introduced, including biological or synthetic scaffolds which can be further enhanced by cellular or extracellular components to promote further in vivo development of the prosthesis after implantation. Nowadays, decellularized donor heart valves are among the most advanced prosthesis types experiencing growing clinical attention and widespread use.
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Akhyari, P., Minol, P., Assmann, A. et al. Tissue Engineering von Herzklappen. Chirurg 82, 311–318 (2011). https://doi.org/10.1007/s00104-010-2031-2
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DOI: https://doi.org/10.1007/s00104-010-2031-2