TESTING METHODS FOR APPLICATION OF A BIOSTIMULATOR FROM CATTLE BRAIN TISSUE ON THE BASIS FROM FILM-FORMING SUBSTANCES

Abstract

An important step in the manufacture of ophthalmic medicinal films is the method of applying the active substance to the base of the film former. As a result of the analysis of available methods, it is necessary to choose a method in which the prolonged action of medicinal substances remains the same, and the molecular structure of the active component does not change. A number of researchers suggest adding an active component to a film former immediately before film production. Some developers apply active ingredients to a ready-made base. Based on the foregoing, we set a goal - to test methods for applying a biostimulator from the brain tissue of cattle with the addition of silver nanoparticles to a base of film-forming substances. As laboratory models for testing the methods of applying the active substance to the film-forming base, we chose polyvinyl alcohol in a ratio of 1/15 with distilled water and gelatin in a ratio of 1/7 with distilled water. To prepare the active substance for its introduction into the film-forming agent, NaCl solution was added with a micropipette to the biostimulator from the brain tissue of cattle with the addition of silver nanoparticles and gently but thoroughly mixed. To determine the dissolution rate of the eye medicinal films obtained as a result of the experiment, the obtained samples were placed on the surface of the cornea of laboratory animals. 10 giant rabbits and two outbred dogs were chosen as experimental animals. As a result of the study, we found that the preferred method for applying a biostimulant from the brain tissue of cattle with the addition of silver nanoparticles to the base of film-forming substances (polyvinyl alcohol and gelatin) is the introduction of the active substance into the film-forming agent immediately before the production of films. Forms based on gelatin completely dissolved in the eyes of the subjects in 45 minutes, from polyvinyl alcohol - in 95 minutes.