Biomedical subjects
Publications and source records attributed to E V Chentsova.
We studied the effect of cultured human fetal (8-12 weeks gestation) neural stem and progenitor cells on regeneration of rabbit cornea after alkaline burn. A single subconjunctival injection of cell culture suspension after burn injury significantly accelerated regeneration of the anterior and posterior epithelium in comparison with the control group.
Adhelon markedly stimulated regeneration of erosive defects in the corneal epithelium. Under the effect of adhelon they healed more than 2-fold more rapidly after subtotal chemical torpid erosion than after total mechanical erosion of the cornea.
Cultured neural stem/progenitor cells from human fetal brain were transplanted into the retrobulbar and suprachoroid space in rabbits with laser-induced damage to the retina. Transplanted cells survived, retained multipotent activity, migrated into the zone of injury, and stimulated reparation and regeneration in the traumatized retina.
A stable and easily reproducible model of experimental retinopathy was constructed in rabbits. The influence of transplanted neural stem cells (NSC) on the functional activity of the retina was studied. Retinopathy was provoked by 0.04 mg of kainic acid introduced intravitreously. The cultivated NSCs were transplanted into the vitreous bodies of the right (experimental) eyes, physiological solution was administered into the left (control) eyes. Clinical examinations of the eyeball in the experimental group showed less pronounced proliferative changes and a lack of gliosis, whereas, in the control group, the retina looked like tissue with fibrous changes and glial bars. An evaluation of the functional activity of the retina denoted a reliably better function of rod bipolars and Muller glias in the eyes with transplanted NSCs during the whole follow-up.
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The proposed method of enzyme therapy of eye burns consists in instillations of a proteolytic drug for the first two days after burn and instillations of an antiproteolytic agent for the next 12 days. Experimental trials of the method in a rabbit with an alkaline burn of the cornea, including assessment of clinical manifestations of disease and investigation of the proteinase-inhibitor balance in the lacrimal fluid demonstrated a high efficacy of the new treatment.
The efficacy of Adhelon, a new stimulator of repair regeneration belonging to the group of adhesion factors, was experimentally assessed in the treatment of ocular injuries on a model of perforating untreated wound of the cornea. Clinical and histologic studies in two groups of rabbits persuasively demonstrated the benign effect of adhelon on the course of wound process: the period of inflammatory reaction shortened, infectious complications were prevented, the wound edges closed sooner, epithelialization and reconstruction of newly formed cicatricial tissue was accelerated. Application of adhelon led to the formation of more delicate, compact, and vessel-free cicatrices and accelerated the repair regeneration of the wounded cornea.