Molecular chiral asymmetry, created in the biosphere during biological evolution, is unambiguously realized in today’s world at the genetic level and in biosynthesis. According to our hypothesis,...

Previous studies showed a potent anti-inflammatory activity of Solanum tuberosum L. polysaccharide (STP), which inhibited pro-inflammatory cytokines and stimulated anti-inflammatory ones in peptic ulcer models. Thus, the main goal of this study was to find out the molecular background of such activity and possible applications in different anti-inflammatory models. This study investigated the anti-inflammatory potential of the polysaccharide STP using model of LPS-induced inflammation in THP-1 macrophage-like cells (on the expression of IL1B, IL6, IL10, TNF, NFKB1, BCL2, NRF2, and BAX—genes involved in the regulation of inflammatory processes and oxidative stress), rat pocket granuloma, and carrageenan-induced oedema models. STP significantly reduced oedema volume, exhibiting a comparable anti-exudative effect to ibuprofen and surpassing the control group. The anti-inflammatory mechanism of STP extends beyond suppression of proinflammatory cytokine (IL1B, IL6, TNF) expression, as it also activates cellular defence mechanisms (NRF2, BCL2, BAX) and expression of anti-inflammatory cytokine (IL10). This complex, multifactorial action suggests that STP may possess significant therapeutic value for inflammatory conditions. The combined functional and molecular findings underscore STP’s potent anti-inflammatory properties, comparable to ibuprofen.

The review considers the main molecular biological features of the COVID-19 causative agent, the SARS-CoV-2 virus: life cycle, viral cell penetration strategies, interactions of viral proteins with human proteins, cytopathic effects. We also analyze pathological conditions that occur both during the course of the COVID-19 disease and after virus elimination. A brief review of the biological activities of polysaccharides isolated from various sources is given, and possible molecular biological mechanisms of these activities are considered. Data analysis shows that polysaccharides are a class of biological molecules with wide potential for use in the treatment of both acute conditions in COVID-19 and post-COVID syndrome.

Background/Objectives: Polysaccharides are complex molecules with a wide range of biological activities that can be used in various biomedical applications. In this work, the antiulcer effect and influence on the level of pro- and anti-inflammatory cytokines of Solanum tuberosum L. polysaccharide (STP) were studied. Methods: The antiulcer effect of STP was studied in the Okabe chronic peptic ulcer model by evaluating the influence of STP on the ulcer index in Wistar rats, comparing it to omeprazole and ranitidine. Dose-effect analysis was also carried out. The level of pro- and anti-inflammatory cytokines was studied using ELISA kits. Results: After treatment in the polysaccharide groups, ulcer healing is observed in 60–80% of cases, in the omeprazole group in 50%, and in the ranitidine group in 25%. STP intravenous injections lead to the formation of a more differentiated mucous membrane; no coarse scar tissue is formed, which is typical for control and comparison drugs. Glycan causes a significant acceleration of the healing of experimental peptic ulcers in rats. STP appears to modulate pro- and anti-inflammatory cytokines. On the fourth and tenth days, a significant decrease in the levels of pro-inflammatory cytokines IL-1b and IFN-γ was noted in the polysaccharide group compared to the control group, while the level of anti-inflammatory cytokine IL-4 significantly increased. Conclusions: Intravenous administration of STP leads to the restoration of functionality and effective tissue regeneration. The antiulcer activity of STP is based on the regulation of the pro- and anti-inflammatory balance.

A space-time model that treats the urban ecosystem as a superposition of active media is expanded to take the heterogeneity of anthropogenic and natural factors into account. The approach is based on...