Kinetics of i-motif folding within the duplex context.

Non-canonical nucleic acid structures possess an ability to interact selectively with proteins, thereby exerting influence over various intracellular processes. Numerous studies indicate that genomic G-quadruplexes and i-motifs are involved in the regulation of transcription. These structures are formed temporarily during the unwinding of the DNA double helix; and their direct determination is a rather difficult task.

A Surface-Enhanced Raman Spectroscopy-Based Aptasensor for the Detection of Deoxynivalenol and T-2 Mycotoxins.

The quality of food is one of the emergent points worldwide. Many microorganisms produce toxins that are harmful for human and animal health. In particular, mycotoxins from Fusarium fungi are strictly controlled in cereals.

Advantages of using Genetically Elevated Lipoprotein(a) Levels in Predicting 5-Year Major Adverse Cardiovascular Events Relating to Coronary Artery Disease in Women.

Background: This study aimed to investigate major adverse cardiovascular events (MACE) in patients with coronary artery disease (CAD) over 5 years, in general, and depending on sex, lipoprotein(a) level, and number of kringle IV type 2 (KIV-2) repeats in the Lipoprotein(A) () gene.

Methods: This study comprised 216 patients (120 women and 96 men) hospitalized with a diagnosis of "CAD, unstable angina IIB class". The three-point risk of MACEs was assessed over 5 years: cardiovascular death, non-fatal myocardial infarction, and stroke.

Optimization of a Modular Nanotransporter Design for Targeted Intracellular Delivery of Photosensitizer.

Modular nanotransporters (MNTs) are drug delivery systems for targeted cancer treatment. As MNTs are composed of several modules, they offer the advantage of high specificity and biocompatibility in delivering drugs to the target compartment of cancer cells. The large carrier module brings together functioning MNT modules and serves as a platform for drug attachment.

Early Detection and Control of Risk Factors for Cardiovascular Diseases in the Aral Region: Experience of Uzbekistan.

Aim: To analyze the results of screening of the population older than 40 years for early detection of risk factors for cardiovascular diseases in real clinical practice of family clinics in the Aral Sea region.

Material And Methods: The results of screening of the population older than 40 years were analyzed for a total of 2,430 respondents from family clinics of the district (Republic of Uzbekistan, Republic of Karakalpakstan, Ellikkala district) according to the modified WHO PEN protocol. 1,020 of the respondents with blood pressure ≥140/90 mm Hg were included in the study (mean age, 57.

E670G PCSK9 polymorphism in HeFH & CAD with diabetes: is the bridge to personalized therapy within reach?

Objective: To assess the distribution of PCSK9 E670G genetic polymorphism and PCSK9 levels in patients with Coronary Artery Disease (CAD) and Heterozygous Familial Hypercholesterolemia (HeFH), based on the presence of type 2 Diabetes Mellitus (T2DM).

Methods: The study included 201 patients with chronic CAD, including those with HeFH (n=57, group I) and without it (n=144, group II). DLCN was used to diagnose HeFH.

Unwinding the SARS-CoV-2 Ribosomal Frameshifting Pseudoknot with LNA and G-Clamp-Modified Phosphorothioate Oligonucleotides Inhibits Viral Replication.

Ribosomal frameshifting (RFS) at the slippery site of SARS-CoV-2 RNA is essential for the biosynthesis of the viral replication machinery. It requires the formation of a pseudoknot (PK) structure near the slippery site and can be inhibited by PK-disrupting oligonucleotide-based antivirals. We obtained and compared three types of such antiviral candidates, namely locked nucleic acids (LNA), LNA-DNA gapmers, and G-clamp-containing phosphorothioates (CPSs) complementary to PK stems.

Rapid SERS Detection of Botulinum Neurotoxin Type A.

Surface-enhanced Raman scattering (SERS) is a powerful technique for decoding of 2-5-component mixes of analytes. Low concentrations of analytes and complex biological media are usually non-decodable with SERS. Recognition molecules, such as antibodies and aptamers, provide an opportunity for a specific binding of ultra-low contents of analyte dissolved in complex biological media.

Bimodular thrombin aptamers with two types of non-covalent locks.

Aptamers are structured oligonucleotides that specifically bind their targets. Oligonucleotides can be assembled in large nanostructures via intermolecular duplexes or G-quadruplexes. Addition of aptamers can be used to create nanostructures that bind specifically certain targets.

Can metformin stabilize PCSK9 level in stable coronary artery disease patients treated with statins?

Introduction: Proprotein convertase subtilisin/kexin type 9 (PCSK9) has emerged as an important marker of cardiovascular risk and a new target for therapeutic interventions. We aimed to study the influence of metformin on the level of circulating PCSK9 in patients with stable coronary artery disease (SCAD) and type 2 diabetes (T2DM) or metabolic syndrome (MetS), receiving moderate doses of statins used in routine clinical practice.

Material And Methods: The study included 80 patients with T2DM or MetS receiving rosuvastatin for at least three months prior the study.

Personalized rosuvastatin therapy in problem patients with partial statin intolerance.

Introduction: The aim was to study the pharmacogenetic determinants of switching simvastatin-intolerant ethnic Uzbek patients with coronary artery disease (CAD) to rosuvastatin treatment.

Material And Methods: The study included 50 patients with CAD, who demonstrated statin-induced adverse liver symptoms, accompanied by an elevation in transaminase level (3-fold or more in 37 cases) or statin-induced adverse muscle symptoms, accompanied by elevations in serum (CK > 3 times above the upper limit of normal (ULN)) in simvastatin treatment with a dose of 10-20 mg/day. The control group consisted of 50 patients without side effects.

Putative Mechanisms Underlying High Inhibitory Activities of Bimodular DNA Aptamers to Thrombin.

Nucleic acid aptamers are prospective molecular recognizing elements. Similar to antibodies, aptamers are capable of providing specific recognition due to their spatial structure. However, the apparent simplicity of oligonucleotide folding is often elusive, as there is a balance between several conformations and, in some cases, oligomeric structures.

Burden of familial heterozygous hypercholesterolemia in Uzbekistan: Time is muscle.

Background And Aims: We aimed to assess the disease burden and to study the molecular genetic characteristics of heterozygous familial hypercholesterolemia (HeFH) patients within the Uzbek population to develop a program of early disease detection and effective treatment measures.

Methods: 201 patients were included in the study, of whom 57 with chronic stable coronary artery disease (SCAD) and HeFH, and 144 with SCAD without HeFH belonging to the control group, and divided into two subgroups: A, statin free before the study (n = 63) and B (n = 81), who took statin outpatiently. We applied the Dutch Lipid Clinic Network Criteria (DLCN) to diagnose HeFH.

[Cephalometric evaluation of the effect of dynamax and monoblock appliances on vertical facial height in patients with distal malocclusion].

The most common abnormality in orthodontics is distal malocclusion. The patient will benefit more if is treated during active growth phase. Various types of functional appliances are used in order to control maxillary and mandibular growth.

Simvastatin intolerance genetic determinants: some features in ethnic Uzbek patients with coronary artery disease.

Introduction: The objective is to study the influence of CYP3A5 (6986A>G), CYP2C9 (430C>T), CYP2C9 (1075A>C), SLCO1B1 (521T>C) and BCRP (ABCG2, 421C>A) gene polymorphisms on the development of simvastatin intolerance in ethnic Uzbek patients with coronary artery disease (CAD).

Material And Methods: The case group contained 50 patients with clinical simvastatin-induced intolerance symptoms; the control group contained 50 patients without side-effects. Genotyping was performed by means of the PCR-RFLP method.

Variability of fluorescence spectra of coelenteramide-containing proteins as a basis for toxicity monitoring.

Nowadays, physicochemical approach to understanding toxic effects remains underdeveloped. A proper development of such mode would be concerned with simplest bioassay systems. Coelenteramide-Containing Fluorescent Proteins (CLM-CFPs) can serve as proper tools for study primary physicochemical processes in organisms under external exposures.

Ultraviolet fluorescence of coelenteramide and coelenteramide-containing fluorescent proteins. Experimental and theoretical study.

Coelenteramide-containing fluorescent proteins are products of bioluminescent reactions of marine coelenterates. They are called 'discharged photoproteins'. Their light-induced fluorescence spectra are variable, depending considerably on external conditions.

[Urban air pollution with heavy metals and evaluating risk for public health].

The authors presented hygienic evaluation of ambient air in various districts of Baku city with heavy metals--lead, cadmium, chromium, nickel, copper and zinc. The metals contents of the air were assessed indirectly by their levels in soils of the areas under study. Findings are that soil levels of zinc, chromium and nickel exceeded those of the other metals by a degree.

Effects of alcohols on fluorescence intensity and color of a discharged-obelin-based biomarker.

Photoproteins are responsible for bioluminescence of marine coelenterates; bioluminescent and fluorescent biomarkers based on photoproteins are useful for monitoring of calcium-dependent processes in medical investigations. Here, we present the analysis of intensity and color of light-induced fluorescence of Ca(2+)-discharged photoprotein obelin in the presence of alcohols (ethanol and glycerol). Complex obelin spectra obtained at different concentrations of the alcohols at 350- and 280-nm excitation (corresponding to polypeptide-bound coelenteramide and tryptophan absorption regions) were deconvoluted into Gaussian components; fluorescent intensity and contributions of the components to experimental spectra were analyzed.

Fluorescence properties of Ca2+-independent discharged obelin and its application prospects.

Discharged obelin, a complex of coelenteramide and polypeptide, is a fluorescent protein produced from the photoprotein obelin, which is responsible for bioluminescence of the marine hydroid Obelia longissima. Discharged obelin is stable and nontoxic and its spectra are variable, and this is why it can be used as a fluorescent biomarker of variable color in vivo and in vitro. Here we examined light-induced fluorescence of Ca(2+)-independent discharged obelin (obtained without addition of Ca(2+)).

[Psycho-emotional state of workers engaged into chlorine and soda production through electrolysis with mercury-pool cathode].

Workers engaged into the studied production are exposed to occupational factors complex as vapor, gas and aerosol mixture. Metallic mercury vapors and its compounds exceed MAC over 10 times in this mixture, noise level at the enterprise is 10 dB over the maximal allowable level, general vibration is 8 dB over the MAL, the occupational hazards also include unfavorable microclimate, work hardiness and intensity. Psychoemotional state of the workers demonstrate significantly disordered emotions and will, premorbid personality changes, lower memory and attention level, indisposition and mood changes, increased reactive and personal anxiety, decreased performance level.

Diaqua-bis-(N,N-diethyl-pyridine-3-carboxamide-κN)bis-{4-[2-(2,4-dioxopentan-3-yl-idene)hydrazin-1-yl]benzoato-κO}copper(II).

In the title compound, [Cu(C(12)H(11)N(2)O(4))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], the Cu(II) atom lies on a center of inversion and is coordinated by carboxyl-ate O atoms, pyridine N atoms and two water mol-ecules in an elongated octa-hedral geometry. The pyridine ring is oriented at a dihedral angle of 74.83 (12)° with respect to the benzene ring.

Spectrophotometric determination of aluminium and indium with 2,2',3,4-tetrahydroxy-3',5'-disulphoazobenzene.

2,2',3,4-Tetrahydroxy-3',5'-disulphoazobenzene (tetrahydroxyazon 2S) has been synthesized for the first time. This reagent has been used for the spectrophotometric determination of aluminium and indium ions. The method is very sensitive and selective for the direct determination of aluminium and indium.