Structural diversity of leukotriene G-protein coupled receptors.

Dihydroxy acid leukotriene (LTB) and cysteinyl leukotrienes (LTC, LTD, and LTE) are inflammatory mediators derived from arachidonic acid via the 5-lipoxygenase pathway. While structurally similar, these two types of leukotrienes (LTs) exert their functions through interactions with two distinct G protein-coupled receptor (GPCR) families, BLT and CysLT receptors, which share low sequence similarity and belong to phylogenetically divergent GPCR groups. Selective antagonism of LT receptors has been proposed as a promising strategy for the treatment of many inflammation-related diseases including asthma and chronic obstructive pulmonary disease, rheumatoid arthritis, cystic fibrosis, diabetes, and several types of cancer.

Protein Design Strategies for the Structural-Functional Studies of G Protein-Coupled Receptors.

G protein-coupled receptors (GPCRs) are an important family of membrane proteins responsible for many physiological functions in human body. High resolution GPCR structures are required to understand their molecular mechanisms and perform rational drug design, as GPCRs play a crucial role in a variety of diseases. That is difficult to obtain for the wild-type proteins because of their low stability.

[SYMBIOSIS OF APITERAPY AND TOURIST - RECREATIONAL RESOURCES IN HEALTH TOURISM AS A FACTOR OF EFFECTIVE POST-COVIDAL HEALTH].

The article discusses the possibilities and prospects of using apitherapy in health tourism in Bashkortostan. The features of the development of beekeeping in the republic and the prospects for the use of beekeeping products in the restoration of the immune system, improvement of the psychological state of the consequences of covid in the conditions of tourist and recreational centers of the region are considered. A health-improving tourist product with the use of apitherapy has been developed.

Correction: School engagement of children in early grades: Psychometric, and gender comparisons.

[This corrects the article DOI: 10.1371/journal.pone.

School engagement of children in early grades: Psychometric, and gender comparisons.

School engagement reflects the degree to which students are invested, motivated and willing to participate in learning at their school and this relates to future academic and professional success. Although school engagement is a primary factor predicting educational dropout or successful school completion in Europe and North America, little is known about school engagement factors in non-English speaking countries. We adapted a 15-item school engagement scale and assessed validity and reliability of the Russian translation on a sample of Russian school-aged children (N = 537, 6-12 years, 46% females) who attended at public schools in Moscow.

Increased Leaf Nicotine Content by Targeting Transcription Factor Gene Expression in Commercial Flue-Cured Tobacco ( L.).

Nicotine, the most abundant pyridine alkaloid in cultivated tobacco ( L.), is a potent inhibitor of insect and animal herbivory and a neurostimulator of human brain function. Nicotine biosynthesis is controlled developmentally and can be induced by abiotic and biotic stressors via a jasmonic acid (JA)-mediated signal transduction mechanism involving members of the APETALA 2/ethylene-responsive factor (AP2/ERF) and basic helix-loop-helix (bHLH) transcription factor (TF) families.

[Evaluation of the cytolytic effect of tonic with ginseng extract].

Experimental evaluation of the cytolytic effect of prolonged use of tonic drink with ginseng extract by determining the activity of enzymes, markers of cytolysis (alanine aminotransferase, aspartate aminotransferase, creatine kinase and lactate dehydrogenase (LDH)) has been carried out. The study was performed on male rats Wistar (n=15, body weight of 461±23 g), to which tonic drink (containing 46 mg/L panaxosides) was administered in the dose 15 mg/kg body weight using a pharyngeal tube. The introduction was carried out three times daily for 21 days.

Transcriptome sequencing reveals e-cigarette vapor and mainstream-smoke from tobacco cigarettes activate different gene expression profiles in human bronchial epithelial cells.

Electronic cigarettes (e-cigarettes) generate an aerosol vapor (e-vapor) thought to represent a less risky alternative to main stream smoke (MSS) of conventional tobacco cigarettes. RNA-seq analysis was used to examine the transcriptomes of differentiated human bronchial epithelial (HBE) cells exposed to air, MSS from 1R5F tobacco reference cigarettes, and e-vapor with and without added nicotine in an in vitro air-liquid interface model for cellular exposure. Our results indicate that while e-vapor does not elicit many of the cell toxicity responses observed in MSS-exposed HBE cells, e-vapor exposure is not benign, but elicits discrete transcriptomic signatures with and without added nicotine.

Natural-focal diseases: mapping experience in Russia.

Background: Natural-focal diseases constitute a serious hazard for human health. Agents and vectors of such diseases belong to natural landscapes. The aim of this study is to identify the diversity and geography of natural-focal diseases in Russia and to develop cartographic approaches for their mapping, including mathematical-cartographical modeling.

[The detection of vitamin D3 deficiency in preschoolers and schoolchildren of Moscow and St. Petersburg].

The evaluation of prevalence and intensity of vitamin D3 deficiency in preschoolers and schoolchildren residing in Moscow and St. Petersburg was implemented. It is established that 63.

[Age-related changes in the level of serum bone markers in healthy children].

Age-related changes in the blood level of bone metabolic markers were compared in healthy children living in different geographical regions. The absolute value of carboxy-terminal telopeptide of type 1 collagen type 1 (beta-CrossLaps) and that of total procollagen type 1 amino-terminal propeptide (PINP) were found to depend on living conditions and the nature of changes in the serum markers of bone metabolism was related to the processes of natural growth and development in children. A child's individual growth curve can be used to identify target groups for the prevention of osteopenia.

Dynamin2 GTPase and cortactin remodel actin filaments.

The large GTPase dynamin, best known for its activities that remodel membranes during endocytosis, also regulates F-actin-rich structures, including podosomes, phagocytic cups, actin comet tails, subcortical ruffles, and stress fibers. The mechanisms by which dynamin regulates actin filaments are not known, but an emerging view is that dynamin influences F-actin via its interactions with proteins that interact directly or indirectly with actin filaments. We show here that dynamin2 GTPase activity remodels actin filaments in vitro via a mechanism that depends on the binding partner and F-actin-binding protein, cortactin.

Ena/VASP proteins capture actin filament barbed ends.

Ena/VASP (vasodialator-stimulated protein) proteins regulate many actin-dependent events, including formation of protrusive structures, fibroblast migration, neurite extension, cell-cell adhesion, and Listeria pathogenesis. In vitro, Ena/VASP activities on actin are complex and varied. They promote actin assembly, protect filaments from cappers, bundle filaments, and inhibit filament branching.

IL-1 receptor antagonist as an aerosol in inflammation.

The feasibility of efficient aerosol delivery of the human IL-1 receptor antagonist (IL-1Ra) for reduction of acute lung inflammation was demonstrated in a mouse model study. The therapeutic efficacy of dry powder formulations PM(2), PM(10) of IL-1Ra was studied at nonforced inhalation in an aerosol chamber using the DPI "Spinhaler". Micronized powder formulations for insufflation were produced by air-jet milling.

Ena/VASP proteins enhance actin polymerization in the presence of barbed end capping proteins.

Ena/VASP proteins influence the organization of actin filament networks within lamellipodia and filopodia of migrating cells and in actin comet tails. The molecular mechanisms by which Ena/VASP proteins control actin dynamics are unknown. We investigated how Ena/VASP proteins regulate actin polymerization at actin filament barbed ends in vitro in the presence and absence of barbed end capping proteins.

[Congenital abnormalities in children as a consequence of local ecologic hazards].

The article covers characteristics, structure and dynamics of congenital abnormalities in children of Novgorod region.

[Ultrasonic dopplerography in the diagnosis of vascular headache in children against a background of thiotriazoline treatment].

Overall twenty-four children aged 10 to 15 years suffering from headache were examined. Doppler sonography technique employed in the study of vessels of the brain and spine reveals a high level of anomalous vessels of the brain and spine in the absence of manifest hemodynamic disturbances in the arterial bed of the vertebral artery and in apparent changes in the venous system. Those patients with headache having been exposed to thiotriasoline treatment demonstrated a positive dynamics of indices for the venous circulation as evidenced by dopplerography.

[The effect of ticlid on the late result after the surgery of the brachiocephalic trunk arteries].

No ischemic insult, myocardial infarction, death due to cardiovascular pathology was observed in 138 patients, to whom after the operation on the arteries of truncus brachiocephalicus the ticlid was administered. At a comparison group (120 patients) in 3 the myocardial infarction have occurred (one patient died), in 2--an ischemic insult. After the ticlid application the positive late follow-up result was noted in 93.

[The choice of the surgical procedure in treating a chronic disorder of the arterial blood supply to the brain].

Results of surgical treatment of 336 patients with chronic disorder of the brain arterial blood supply were summarized. Surgical tactics provided for maximum brain revascularization by means of simultaneous intervention on two-three arteries. Technical aspects of operative procedures elaborated in clinic are presented.

IgG4 antibodies in hay fever patients. Difference in IgG4 response to tree pollen and grass pollen allergens.

Total IgE and IgE and IgG4 antibodies to offending allergens were studied in 118 hay fever patients allergic to tree pollen and grass pollen allergens. No difference in the level of total IgE and IgE antibodies was found between these two groups while the IgG4 antibody level was significantly higher in tree pollen allergic patients. It is suggested that the IgG4 antibodies to tree pollen allergens can be stimulated by structurally related allergens of vegetable food and are probably involved in tree pollen-associated food hypersensitivity.

[alpha 1-proteinase inhibitor in breast cancer].

Level of alpha 1-proteinase inhibitor (alpha 1-Pi) and antitryptic activity in blood serum were assessed in 167 patients with breast cancer and 30 cases of benign lesions. An increase in blood serum-alpha 1-Pi level was shown to be associated with tumor advancement but could not be regarded as a marker of cancer. Concentration of the inhibitor exceeded 8 mg/ml in 83.

[IgG4 antibodies to the allergens of grass and tree pollens in pollinosis patients: their diagnostic and prognostic significance].

Total IgE, IgE and IgG4 antibodies to offending allergens were studied in 118 hay fever patients with allergy to tree pollen or to grass pollen. No difference in the level of total IgE and IgE antibodies was found between these groups of patients while the IgG4 antibody level was significantly higher in tree pollen-allergic patients. It has been established that in tree pollen allergy, the determination of IgG4 antibodies is of no less diagnostic value than the assay of IgE antibodies.