The fabrication of a chip analyzer based on polydimethylsiloxane and glass has been described. The possibilities of the treatment of the chip channel surface by atmospheric plasma and sodium dodecyl sul phate used as an additive to the working buffer solution has been studied. The rate of electroosmotic flow was evaluated. Using a model mixture of catecholamines, the effect of modification of the surface of microchip channels on efficiency and separation factor was revealed. Methods for enhancing the sensitivity of the elec trochemical cell have been developed; the possibilities of online preconcentration in the chip format were evaluated. The limit of detection for catecholamines has been attained at 10 -6 -10 -7 g/mL.
The purpose of the study was to assess the changes in the width and quality of keratinized tissue created in the area of vestibuloplasty on the lower jaw. Preliminary results of the study showed that autotransplantation method allows creating proper buffer zone with the desired mucosa thickness and is particularly justified in cases of "washing board" effect. However, the method is technically more demanding and is more expensive and painfull for patients. The use of alternative materials of artificial origin, such as "Mucograft" and "Tachocomb" simplifies the execution of operation, thereby reducing operational risk, but often does not lead to the formation of a fully keratinized gingiva.
The review presents data on two similar granulomatous inflammatory diseases: tuberculosis and sarcoidosis of the lungs, which together cover about 5% of all pulmonary pathology, albeit occur with different incidence (20 : 1). Despite the established aetiology of tuberculosis, the disease has not disappeared and nowadays has even acquired a new urgency: It is getting out of control due to growing poverty, the comorbidity with HIV infection, increasing cases of drug resistance of Mycobacteria, insufficient effectiveness and the growing costs of its treatment. Against the background of the expansion of anthropogenic influences and other environmental impacts on the immune system, the incidence of lung sarcoidosis is also increasing, while patients are initially often misdiagnosed with tuberculosis, with resulting unjustified anti-tuberculosis chemotherapy, leading to chronization of the disease with frequent relapses and, accordingly, to an increase in disability and mortality rates. In recent years, clinical manifestations of sarcoidosis due to a variety of trigger aetiological factors with adjuvant-like action (from Mycobacteria to xenobiotics) are considered by a number of authors as a variant of autoimmune/autoinflammatory syndrome induced by adjuvants (ASIA). The article emphasizes the similarity of two granulomatous inflammatory diseases and the concept of two variants of the bodys response to similar or even identical aetiological factors within different human reactivity (possibly on a different mosaic/permissive background). In brief the newest data on experimental models of sarcoidosis are reviewed as well as the role of autophagy disorders and opposite macrophageal polarization in tuberculosis versus sarcoidosis. Authors coined the original hypothesis of the possible therapeutic effectiveness of Rapamycin in sarcoidosis and for the first time posed a question of equivocal character of comorbidity between these granulomatoses and COVID-19 infection.
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