[Laparoscopic partial nephrectomy using a technology of augmented reality: new vector of the development of operative urology?].

Aim: to evaluate the efficiency and usefulness of augmented reality (AR) technology using HoloLens glasses for laparoscopic partial nephrectomy (LPN).

Materials And Methods: From July to December 2019, a total of 5 patients with localized kidney cancer (cT1aN0M0) underwent AR-assisted LRP. The mean RENAL score was 6 points (5-8).

[Features of determination of 2-methoxyhydroxybenzene in the study of biological material].

The aim of the study was to develop a method for the determination of 2-methoxyhydroxybenzene in biological material. TLC, UV spectrophotometry, HPLC and GC-MS were used in the experiments. The use of a mixture of ethyl acetate-acetone (7:3 by volume) for the isolation of 2-methoxyhydroxybenzene from biological material is justified.

[The specific features of the distribution of 4-metoxyhydroxybenzene in the organism of the warm-blooded animals suffering lethal intoxication].

This work was designed to study the distribution of 4-metoxyhydroxybenzene in the organism of the omnivorous warm-blooded animals (rats) after the intragastric administration of this poisonous compound at a dose three-fold greater than the LD50 value. The administered 4-metoxyhydroxybenzene was isolated from the organs and blood of the experimental animals by exposing the biological tissues to acetone with subsequent purification on a silica gel L 40/100 mcm using a hexane:dioxane:propanol-2 (20:5:1) as the mobile phase. The identification and quantitation of 4-metoxyhydroxybenzene were carried out with the use of TLC, GC-MS, and UF-spectrophotometry.

[The distribution of 4-nitroanilin in the body of warm-blooded animals].

Specific distribution patterns of 4-nitroanilin in the body of warm-blooded animals (rats) were studied after the in vivo administration of this poisonous substance. It was shown that unmetabolized 4-nitroanilin accumulates in large quantities in the internal organs of the intoxicated animals. Its highest levels are found in the stomach and its contents, kidneys, and lungs.