摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines Gewebetransplantatkonstruktes zur Rekonstruktion eines menschlichen oder tierischen Organs. Das Verfahren umfaßt die Schritte: a) Isolieren und zweidimensionales Kultivieren von organspezifischen Gewebezellen; b) Aufbringen der organ-spezifischen Gewebezellen auf eine biologisch kompatible, kollagenhaltige Membran; und c) Kultivieren der organ-spezifischen Gewebezellen auf der Membran unter biochemischer und mechanischer Stimulierung der organ-spezifischen Gewebezellen.
摘要:
Durch das beschriebene Verfahren wird erstmalig ein vitales vaskularisiertes Trachea-Implantat erhalten, das sich im Bereich der Anastomosen gut angleicht und künstlichen Trachea-Prothesen überlegen ist. Das neue bioartifizielle Trachea-Implantat besteht aus einer inneren, röhrenförmigen biologischen oder künstlichen Matrix und einer äusseren, mit einer nativen Gefässversorgung ausgestatteten tubulären Gewebematrix, die aus dem Darm entnommen wurde und ganz oder teilweise azellularisiert und mit autologen Zellen des Empfängers rebesiedelt sein kann. Zwischen der inneren und der äusseren Matrix befinden sich in ringförmig abgebundenen Zwischenräumen angesiedelte Knorpelzellen, die dem Implantat sowohl Festigkeit als auch hinreichend Beweglichkeit geben.
摘要:
An artificial trachea which comprises a base material of a mesh of polypropylene tubes having polypropylene yarn stents wound helically on the perimeter thereof, a thin layer of amorphous collagen arranged around the base material, and, formed on both the outer and inner faces of the thin layer of amorphous collagen, a layer of the collagen in the form of fine fibers which has been crosslinked by heating. The artificial trachea can be used clinically with safety, and in particular, can be advantageously used as an artificial trachea for an intrathoracic trachea.
摘要:
An artificial gut (100) comprises a first hollow fiber (203) having an inner surface (215) that is lined with at least a portion of a layer of one or more of a plurality of biological components (205) that typically line a mammalian gut. Further, a second hollow fiber (201) is adjacent the first hollow fiber. The layer of one or more of the plurality of biological components can consist essentially of enterocytes. The enterocyte-lined inner surface is perfused with a feeding solution containing nutrients, and the enterocytes absorb, process, and transport the nutrients across the wall of the first hollow fiber. The nutrients eventually diffuse into the second hollow fiber. A perfusate selected from the group consisting of culture medium, blood, and plasma, can perfuse an inner surface of the second hollow fiber, whereby the perfusate is nourished by the nutrients.
摘要:
Various exemplary surgical adjuncts with medicants affected by activator materials are provided. In general, an adjunct is provided with at least one medicant that is configured to be activated by an activator material. The adjunct can be delivered to a tissue of a patient, where the adjunct can be implanted. Various activator materials can be configured to activate the at least one medicant retained by the adjunct, the activation causing any one or more of a variety of actions. For example, the at least one medicant can be activated so as to yield at least one of a signal and/or an effect on the adjunct.
摘要:
The present disclosure relates to in situ tissue engineering, more specifically in situ vascular tissue engineering with the aim of providing a tissue structure which can be used e.g. as a substitute blood vessel or as a blood vessel functioning as cannulation site in hemodialysis. In particular, the disclosure involves tissue structure formation around a subcutaneously implanted synthetic rod. In addition, the disclosure involves a method for producing said synthetic rod.
摘要:
Provided herein are methods of treatment and prevention of ischemia reperfusion (IR) injury comprising administering a mesenchymal stem cell conditioned medium to a transplant tissue or donor.