[Reaction of regional lymph nodes of the middle ear during ultrasound lymphotropic therapy of exudative otitis media (experimental study)]. / Reaktsiya regionarnykh limfaticheskikh uzlov srednego ukha pri ul'trazvukovoi limfotropnoi terapii ekssudativnogo otita (eksperimental'noe issledovanie).

The article is devoted to structural changes in the regional lymph nodes of the middle ear (superficial, facial and deep cervical lymph nodes) in experimental animals (30 male Wistar rats) when modeling exudative otitis media and after a 7-day course of local ultrasound lymphotropic therapy. The method of conducting the experiment is described. Comparative morphological and morphometric studies of lymph nodes were carried out on the 12th day from the beginning of otitis modeling and evaluated according to 19 criteria: node cut-off area, capsule area, marginal sinus, interstitial part, paracortical area, cerebral sinuses, brain cords, area number and area of primary and secondary lymphoid nodules, area of germinal centers, specific areas of the cortex and medulla oblongata, sinus system, T-dependent and B-dependent zones, cortical-cerebral index. With exudative otitis media in the regional lymph nodes of the middle ear, compared with the physiological norm, a reaction from the intra-nodular structures was observed, indicating inhibition of drainage and detoxification in the lymph catchment area, which was considered as the morphological equivalent of the insufficiency of their lymphocyte function. Regional lymphotropic therapy using low-frequency ultrasound contributed to the positive dynamics of the structural components of the lymph nodes and the normalization of most of their indicators, which is a prerequisite for the development and use of this technology in clinical practice.

[Biomechanical grounds for use of lower molar segments after tooth preservation operations]. / Biomekhanicheskoe obosnovanie ispol'zovaniia segmentov nizhnikh moliarov posle zubosokhraniaiushchikh operatsii.

The mathematical modeling and clinical testing of results of usage of low molar segments as supporting elements after tooth preserving surgery have been made. After hemisection and crown-radicular separation the critical load for low molar segments is more than 30 kg; after root amputation the critical load for low molar segments is more than 18 kg. The mathematical modeling, clinical observation, and X-ray photography have shown that the remained supporting system of low molars provides a full functioning of the teeth-jaw system after crown radicular separation and hemisection tooth preserving surgery.

[A method for measuring electric impedance in evaluation of the course of experimental myocardial infarction]. / Metod élektricheskoi impedansometrii v otsenke techeniia éksperimental'nogo miokarda.

Electrical impedance of white rats heart muscle of wistar population was measured in different terms of experimental myocardial infarction. Results of electroimpedansometry reflect in full extent structural changes, taking place in a heart muscle. General tendency of animal and human healing processes was found and it was confirmed, that infarction affects the whole heart muscle.