PL396313A1 - Allogeneic and autologous fibrin carrier, method for its preparation and the use of a fibrin carrier for transplantation of cells, especially human cells - Google Patents

Abstract

An autologous and allogenic fibrin carrier characterized in that it is a gel-like mixture of fibrinogen and platelet-rich plasma combined at a ratio 0.1-2 to 0.1 -2, favorably 1 : 1 of volume share, and a calcium chloride in a 0.1-99% solution, favorably a 10% solution at a ratio 0.1-2 to 0.1-2, favorably 1 : 1 relative to the mixture of fibrinogen and platelet-rich plasma. A method of obtaining an autologous fibrin carrier comprising blood collection, separation of blood plasma from blood cells, freezing and thawing of blood plasma, characterized in that the blood donation collected from the blood donor is separated from the concentrate of blood cells, i.e. erythrocytes, leukocytes being removed, said separation having the form of centrifugation at + 20 to + 24°C for 5 to 15 minutes, with centrifugation force of 700 to 2000 x g; afterwards plasma is pushed through to an empty satellite container, wherein centrifugation takes place at + 20°C to +24°C for 5-15 minutes at a centrifugation force of 2100 to 5000 x g to separate platelet-rich plasma, which is stored in bags, favorably breathable swinging bags for maximum 7 days and favorably 3 days. The remaining platelet-poor plasma is used for preparation of fibrinogen in cryoprecipitate, by freezing blood plasma twice to the temperature of -30°C to -90°C and thawing blood plasma at about + 4°C, for example in a water bath, then it is centrifuged at about + 4°C for 5-20 minutes at centrifugation force of 1000 to 5000 x g, wherein supernatant is removed and resultant cryoprecipitate is mixed with platelet-rich plasma from the container, at a ratio from 0.1 -2 to 0.1 -2, favorably 1 : 1, and with a calcium compound solution, favorably a 10% calcium chloride solution at a favorable ratio 1 : 1 relative to the mixture of fibrinogen and platelet-rich plasma. Use of an autologous fibrin carrier for obtaining a gel-like transplant, that is a carrier formed by mixing fibrinogen and platelet-rich plasma obtained from the recipient's blood, favorably of a single donation, or ready-made fibrinogen characterized by an adequate phenotype and platelet-rich plasma taken directly from the blood donation of the patient-recipient using the operating room's apparatus, wherein in the process of obtaining a carrier and prior to the addition of a 0.1%-99% calcium chloride solution at a ratio 0.1 -2 do 0.1-2, favorably 1 : 1 of volume share relative to the mixture of fibrinogen and platelet-rich plasma, from 5 thousand to 100 million recipient's cells or allogenic and xenogenic cells are added, cultured in a known way and processed on the transplantation's date by trypsinization, washing in a serum- containing medium and vitality assessment.