摘要:
A method of producing a pharmaceutical preparation comprising fibronectin and fibrinogen is disclosed. The method involves admixing into a starting solution of fibrinogen and fibronectin, in a single step, a precipitating composition comprising a polyalkylene glycol and at least one of glycine and &bgr;-alanine which forms a precipitate. Next, the precipitate is collected and a pharmaceutical preparation is prepared from the precipitate. The pharmaceutical preparation has a fibronectin:fibrinogen ratio from about 0.02 to about 0.2.
摘要:
A method for producing protein compositions comprising fibrinogen and fibronectin is disclosed, wherein a fibrinogen and fibronectin-containing starting solution is treated with a precipitating composition which comprises two different components that modify the solubility of fibrinogen and/or fibronectin, so that in a single-step precipitation a precipitate is formed which comprises fibrinogen and fibronectin, and the precipitate formed optionally is further treated by methods known per se.
摘要:
A tissue adhesive on the basis of human or animal proteins has a content of factor XIII and fibrinogen, the ratio of factor XIII to fibrinogen, expressed in units of factor XIII per gram of fibrinogen, amounting to at least 80. Furthermore, it contains a plasminogen-activator-inhibitor or plasmin-inhibitor in an amount of 20 to 2,000 KIU per ml.
摘要:
A stable tissue adhesive is described which comprises fibrinogen and an activator or pro-activator of prothrombin, wherein its content of prothrombin present in blood is less than 5 units/g fibrinogen. This tissue adhesive can be present as a liquid or dry preparation and can optionally be applied to a biologically degradable water-soluble support.
摘要:
There is disclosed a method of inactivating reproductive filterable pathogens in tissue adhesives containing fibrinogen and Factor XIII, with their biologic activity being largely preserved. In order to provide a tissue adhesive preparation of human or animal origin, which exhibits a high safety with respect to reproductive filterable pathogens and whose biologic activity is largely preserved, preparations having a minimum content of 100 units of Factor XIII/g of fibrinogen are heated in the dry state in the presence of an oxygen-free inert protective gas or under vacuum.
摘要:
The invention relates to storage-stable fibrinogen preparations for preparing concentrated fibrinogen solution for use as a tissue adhesive or for preparing fibrinogen solutions for other uses, for example, for infusion purposes. The fibrinogen preparations are characterized in that(i) the lyophilized preparation comprises a substance improving the solubility of fibrinogen such that the reconstitution time is up to 15 minutes, preferably less than 7 minutes, when dissolving with water at room temperature to a solution with a fibrinogen concentration of at least 70 mg/ml and(ii) the ready-to-use tissue adhesive solution obtained from the preparation forms fibrin clots having physiological fibrin structure after mixing with a thrombin-CaCl.sub.2 solution.
摘要:
In a method of producing a virus-safe biological preparation by heating while preserving a least 50% of its biologic activity, a biologially compatible tenside is added to the preparation before heating and heating is carried out in the presence of the same, whereupon the tenside, preferably, is eliminated.
摘要:
A tissue adhesive in lyophilized form contains at least one biologically compatible tenside beside fibrinogen and factor XIII and optionally further proteins as well as adjuvants or additives. The presence of these biologically compatible tensides was found to shorten the reconstitution times of lyophilized tissue adhesive preparations without negatively affecting the biochemical, mechanical or biological properties of the preparation or of the tibrin formed therefrom.
摘要:
The invention relates to a hemostatic sponge based on collagen and an activator or proactivator of blood coagulation homogeneously distributed therein, which is dried and contains a water content of at least 2%, preferably in the range of 2 to 25%, more preferred 10 to 20%, and a method for producing this sponge.
摘要:
The invention relates to a fibrin sponge comprising a residual moisture content of at least 3%, preferably of 3 to 35%, in particular 10 to 20%, and preferably containing a blood clotting activator or proactivator, a method of preparing this fibrin sponge as well as a kit for wound gluing which comprises the fibrin sponge and a component containing a blood clotting factor. The sponge according to the present invention is suitable for hemostasis, tissue adhesion and aiding wound healing.