Background Three-dimensional (3-D) modelling can be a useful technical aid and we used it to reconstruct a homicide scene to corroborate the statement of an eyewitness. 3-D modelling of the bloodstain was conducted by Micro Smith Poser 11 and Autodesk 3-Ds Max software. The technique was found to be easily understandable by the police and judiciary in the interpretation of the sequence of the events of the crime. It refuted the eye-witness's account of the actions of the accused who was charged with murder and allowed collection, storage and retrieval of the patho-anatomic information about the deceased. Conclusion The checks on the accuracy of statements given by eye-witnesses that can be provided by 3-D modelling may change the outcome of criminal investigations in future.

The metabolic processes of the human body are based on multiple redox reactions and oxidative stress occurs when homeostasis is imbalanced. Antioxidant system of the body is represented by such enzymes as catalase, glutathione reductase, superoxidismutase and glutathione peroxidase. Objective: to study the dynamics of glutathione reductase activity in rat liver tissues after cryodestruction of right atrial myocardium to initiate oxidative stress. Materials and methods: 420 male rats were used. The rats were divided into two groups - intact and experimental, 210 animals in each. To initiate oxidative stress, the experimental group rats underwent cryodestruction of the right atrium. The activity of glutathione reductase in the liver tissue was determined by accumulation of oxidized glutathione before the experiment, as well as on 1, 3, 5, 7 and 14 days of the experiment. Conclusions: oxidative stress arising after cryodestruction of the right atrium up to the 7th day of the experiment provokes a decrease in the glutathione reductase activity in the rat liver tissue, but the start of reparative processes helps to restore the disturbed redox equilibrium in the body and normalize the enzyme level.

The eyes are exposed to aggressive environmental influences. The blood-ophthalmic barrier is one of the resistance mechanisms serving to protect the body. Mechanical eye trauma violates the integrity of the hematoophthalmic barrier and induces oxidative stress on the background of general inflammatory process with cellular structures disturbances. The aim of our study was to investigate the peculiarities of free radical processes and antioxidant protection of the organism under induced oxidative stress by mechanical eye injury. The experiment was conducted on males of six months of age in an amount of 150. In blood, liver, brain, heart and skeletal muscle tissues we studied the state of enzyme indicators of oxidative stress in the dynamics in intact animals and in rats with violation of the blood-ophthalmic barrier by mechanical eye injury and different types of therapy. Based on the data obtained, we performed an integral assessment of oxidative homeostasis in injured animals using a logistic model. The resulting logistic regression equations allow modifying the redox processes in the body by applying biologically active compounds as additional therapy, but are of more fundamental than practical interest, as they illustrate the interrelationships of lipid peroxidation-antioxidant system enzymes in the tissues under study.