New insights into the unique biochemical properties of riboflavin (Rf), also known as vitamin B2, are leading to the development of its use not only as a vitamin supplement but also as a potential anti-inflammatory, immunomodulatory, antioxidant, anticancer, and antiviral agent, where it may play a role as an inhibitor of viral proteinases. At the same time, the comparison of the pharmacoactivity of Rf with its known metabolites, namely, flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), is very complicated due to its poor water solubility: 0.1-0.
View Article and Find Full Text PDFAs a non-metallic organic semiconductor, graphitic carbon nitride (g-CN) has received much attention due to its unique physicochemical properties. However, the photocatalytic activity of this semiconductor faces challenges due to factors such as low electronic conductivity and limited active sites provided on its surface. The morphology and structure of g-CN, including macro/micro morphology, crystal structure and electronic structure can affect its catalytic activity.
View Article and Find Full Text PDFThe optical and magneto-optical characteristics of KTb3F10 crystals in the transition region of 5D4 → 7F6 4f8 configurations of the Tb3+ ion at temperatures of 90 and 300 K were studied. The schemes of the optical transitions in the KTb3F10 crystals were constructed, and the energies of most of the Stark sublevels of the ground 7F6 and excited 5D4 multiplets of the Tb3+ ion split by the C4v symmetry crystal environment were determined. The presence of three- and two-doublet states in the energy spectra of the Tb3+ion multiplets 7F6 and 5D4, respectively, was established, which is in good agreement with theoretical predictions.
View Article and Find Full Text PDFLongevity is a unique human phenomenon and a highly stable trait, characterized by polygenicity. The longevity phenotype occurs due to the ability to successfully withstand the age-related genomic instability triggered by Alu elements. The purpose of our cross-sectional study was to evaluate the combined contribution of , , *, , , , , , and Alu elements to longevity.
View Article and Find Full Text PDFCancer and drug-resistant superinfections are common and serious problems afflicting millions worldwide. Photodynamic therapy (PDT) is a successful and clinically approved modality used for the management of many neoplastic and nonmalignant diseases. The combination of the light-activated molecules, so-called photosensitizers (PSs), with an appropriate carrier, is proved to enhance PDT efficacy both in vitro and in vivo.
View Article and Find Full Text PDFObjective: The development of asthma and its related phenotypes is most likely due to the polymorphism of the so-called modifier genes. The goal of this study was to evaluate the polymorphic locus rs1695 of the gene association with risk factors for developing asthma and its phenotypic manifestations.
Methods: This case-control study involved 164 patients with confirmed asthma diagnosis and 147 age- and sex-matched controls.
Background/aim: The aim of the study was to analyze the relationship of the immune response mediator genes’ polymorphic loci (TNFA rs1800629, LTA rs909253, IL1B rs16944, IL2-IL21 rs6822844, IL2RA rs2104286, IL6 rs1800795, IL10 rs1800872, MIF rs755622, CTLA4 rs3087243, NFKB1 rs28362491, PTPN22 rs2476601, PADI4 rs2240336) variants with the methotrexate efficacy in juvenile idiopathic arthritis (JIA).
Materials And Methods: The study included 274 JIA patients from the Republic of Bashkortostan, Russia. Achieving the American College of Rheumatology Pediatric 30 (ACR Pedi 30) response was regarded as the presence of the response to methotrexate (otherwise, as the absence), while achieving clinical remission on medication (Wallace et al.
Photopolymerization of nanocomposite materials using near infrared light is one of the unique technologies based on the luminescent properties of lanthanide-doped upconversion nanoparticles (UCNPs). We explored the UCNP-triggered radical polymerization both in oligomer bulk and on the nanoparticle surface in aqueous dispersion. Core/shell UCNPs NaYF:Yb and Tm/NaYF with emitting lines in the ultraviolet and blue regions were used to activate a photoinitiator.
View Article and Find Full Text PDFCarbon tetrachloride is a well-studied hepatotropic poison. Animal models of exposure to carbon tetrachloride resemble acute liver damage in humans. This paper presents the study of the expression of genes related to cell cycle control, apoptosis, and oxidative stress in a model of carbon tetrachloride-induced toxic hepatitis in rats.
View Article and Find Full Text PDFAim: To study the production and genetic factors affecting the cardiovascular system (CVS) in the petrochemical industry workers.
Materials And Methods: There was carried out an assessment of the working conditions and the state of health of 860 workers of petrochemical plants males, including 548 apparatchiks (main group) and 312 fitters of instrumentation and automation (comparison group). The main risk factors with subsequent assessment of cardiovascular risk (SSR) on the scale SCORE (Sistematic COronary Risk Evaluation) were studied.
Background: Determining the role of genetic markers in individual sensitivity to chemical exposures raises a possibility of risk assessment of occupational diseases and their prevention. This paper focuses on the results of the identification of molecular-genetic markers associated with occupational skin cancer susceptibility. This study aimed to explore an association between polymorphisms of the tumor suppressor gene and a risk of developing occupational skin neoplasms.
View Article and Find Full Text PDFThe reduction of 5,10,15-triphenylcorrole (HTPCor) with decamethylchromocene yields (Cp*Cr)(H)(HTPCor˙)·CHCl (1). It is accompanied by the deprotonation of HTPCor and the formation of planar HTPCor˙ radical dianions. Complex 1 manifests a band at about 750 nm observed in the solution spectra of HTArylCor˙ and demonstrates an EPR signal attributed to the reduced corrole macrocycle.
View Article and Find Full Text PDFThe distribution of allele and genotype frequencies of Alu(I/D) polymorphic sites in the COL13A1 and LAMA2 genes coding extracellular matrix protein subunits was characterized in an ethnically homogeneous group (Tatars from the Republic of Bashkortostan, Russia). It was established that the frequency of individuals with the COL13A1*D/*D genotype was higher in the senile age period. The LAMA2*I/*D genotype was predisposing to longevity among women.
View Article and Find Full Text PDFAim: The aim of this study was to investigate the frequency of polymorphic variants of genes CYP2E1 and GSTA1 in patients with pathology of the hepatobiliary system (PHS) and healthy individuals in the Republic of Bashkortostan, as well as an analysis of possible associations of genotypes of this gene with the development of PHS.
Materials And Methods: There were examined 81 patients with pathology of the hepatobiliary system. Was studied association analysis of polymorphic loci of genes CYP2E1 and GSTA1.
The distribution of allele and genotype frequencies of Alu(I/D)-polymorphic sites in PLAT (TPA25), PKHD1L1 (Yb8AC702), STK38L (Ya5ac2145) и TEAD1 (Ya5ac2013) genes was first characterized in the ethnically homogeneous group (Tatars from the Republic of Bashkortostan, Russia), and was established (found) the association of each gene polymorphism with age. The study group consisted of 1580 unrelated individuals aged between 21 and 109 years, including 204 long-livers. It was found that STK38L*I/D genotype had positive association with longevity in the total group (OR=1,016, p=0,034).
View Article and Find Full Text PDFThermo-optical characteristics of a new magneto-active material, Na(0.37)Tb(0.63)F(2.
View Article and Find Full Text PDFThe allele and genotype frequency distribution at polymorphic loci rs3892097 (184G>A) of CYP2D6 gene, rs776746 (6986A>G) of the CYP3A5 gene and rs2740574 (-392A>G) of the CYP3A4 gene in Russians, Tatars, and Bashkirs was examined. Samples were taken from residents of Bashkortostan Republic (1240 men and women aged from 20 to 109 years and consisted of 443 Russians, 517 Tatars, and 280 Bashkirs). Allele identification was conducted using PCR-RFLP or PCR with TaqMan probes.
View Article and Find Full Text PDFVestn Khir Im I I Grek
November 1972