2,630 results match your criteria: "Kazan [Volga Region] Federal University[Affiliation]"

Contrasting effects of arsenic on mycorrhizal-mediated silicon and phosphorus uptake by rice.

J Environ Manage

January 2025

Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.

Silicon (Si) and arbuscular mycorrhizal fungi (AMF) increase plant resistance to various environmental stresses, including heavy metal (and metalloid) toxicity. Although Si and AMF each independently enhance plant tolerance, the nature of their interactions and their combined impacts on nutrient uptake, especially in the context of toxic elements such as arsenic (As), remains to be elucidated. This study investigated AMF-mediated regulation of plant nutrient uptake under As stress using rice, a model Si-accumulating plant.

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According to the World Health Organization, the number of people suffering from depressive disorders worldwide is approaching 350 million. The consequences of depressive disorders include considerable worsening of the quality of life, which frequently leads to social isolation. One of the key factors which may cause depression in adulthood is early life stress, in particular, insufficient maternal care during infancy.

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Background & Aim: We aimed in this study to investigate the relationship between Androgen Deprivation Therapy (ADT) use and the risk of heart failure in patients with prostate cancer. In this research, the negative or positive effects of ADT in the development of cardiovascular diseases or its exacerbation in people with prostate cancer have been investigated.

Materials And Methods: For this research, we reviewed articles from PubMed, Scopus, and Google Scholar databases until February 2024.

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Chemotherapy is the primary treatment option for pancreatic cancer, although nanocarrier-based drug delivery systems often struggle with multiple physiological barriers, limiting their therapeutic efficacy. Here, we developed a pH/reactive oxygen species (ROS) dual-sensitive self-adaptive nanocarrier (DAT) encapsulating camptothecin (CPT), an analog of the pancreatic chemotherapeutic drug irinotecan (CPT-11), to enhance chemotherapy outcomes in orthotopic pancreatic cancer by addressing multiple physiological barriers. The nanocarrier features a peripherally positively charged arginine (Arg) residue on DAT and is masked with an acid-labile 2,3-dimethylmaleic anhydride (DA) to improve circulation time.

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Our study investigates the intra- and interpopulation diversity of phytopathogenic fungi, using as a model organism. A total of 136 strains, representing two populations, were collected from different winter cereal crops (rye, wheat, and triticale) across two agrocenoses. In these strains, we analyzed and compared genetic and phenotypic traits, exploring potential relationships between them.

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Mapping transcription start sites and determining their activity remain a challenging task even for well-studied organisms. Here, we present Cappable-seq RNA sequencing data of K-12 MG1655 after treatment with three antibiotics with various spectra of action that may expand the range of mapped transcription start sites for this model organism.

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In our study, four species of wood-decaying fungi with perennial fruiting bodies were used as the source of biologically active compounds (BACs) - Inonotus obliquus (chaga), Fomitopsis pinicola, Fomes fomentarius, and Ganoderma applanatum. Fungi have a wide range of secondary metabolites but are used much less frequently than plants in both folk and official medicine. Fungotherapy could be considered a promising trend in the development of modern natural therapy.

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Efficient catalytic systems for various organic transformations in green solvents, especially water, are in great demand. Catalytically active bis-NHC complexes of palladium(II) based on imidazole-4,5-dicarboxylic acid with different lipophilicities were obtained. The synthesis of imidazolium salts was complicated by the formation of side products of nucleophilic substitution by iodide ions in the Menshutkin reaction involving alkyl iodides, which was successfully resolved by using alkyl tosylates.

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In the vast landscape of materials science, bismuth emerges as a compelling element with unique properties and diverse applications. Its intriguing characteristics and advancements in nanotechnology have propelled bismuth-based nanoparticles to the forefront of scientific exploration, promising breakthroughs in various disciplines. This comprehensive review explores diverse methods for synthesizing bismuth-based nanoparticles and nanocomposites, ranging from conventional approaches such as hydrothermal and sol-gel to innovative techniques such as microwave-assisted, microemulsion, and green synthesis.

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The study investigates the impact of incorporating Ni and Cu into the lattice of ZnO nanoparticles (NPs) to enhance their anticancer and antioxidant properties. Characterization techniques including pXRD, FTIR, UV-visible absorption spectroscopy, FESEM, and EDAX confirm the successful synthesis and structural modifications of Ni/Cu-ZnO NPs. Anticancer activity against breast cancer (MDA) and normal skin (BHK-21) cells reveals dose-dependent cytotoxicity, with Ni/Cu-ZnO NPs exhibiting higher efficacy against MDA cells while being less harmful to BHK-21 cells.

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The spiny mouse ( species) is capable of scarless wound regeneration through largely yet unknown mechanisms. To investigate whether this capacity is related to peculiarities of the hemostatic system, we studied the blood of in comparison to (Balb/c) to reveal differences in blood composition and clotting in both males and females. In response to surgical manipulations, blood clots formed in wounds of comprised a stronger hemostatic seal with reduced surgical bleeding in comparison with Balb/c.

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Cancer is one of the most common diseases in developed countries. Recently, gene therapy has emerged as a promising approach to cancer treatment and has already entered clinical practice worldwide. RNA interference-based therapy is a promising method for cancer treatment.

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The development of multidrug resistance by pathogenic bacteria and yeast is a significant medical problem that needs to be addressed. One possible answer could be the combined use of antibiotics and silver nanoparticles, which have different mechanisms of antimicrobial action. In the same way, these nanoparticles can be combined with antifungal agents.

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Unlabelled: We present the chemical synthesis of polyethyleneimine-conjugated silver sulfide nanoparticles (PEI/AS) utilizing an economical solvothermal synthesis method, aimed at developing effective alternative antibacterial agents. The antibacterial efficacy of the synthesized materials, both with and without the application of near-infrared (NIR) laser irradiation, was evaluated in vitro against two distinct clinically relevant multi-drug-resistant (MDR) uropathogenic strains: and . The bactericidal effects induced by NIR light indicate that the PEI/AS nanoparticles possess an efficiency that is five times greater than that of AgS alone.

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Article Synopsis
  • The study investigates hantaviruses in bats, specifically focusing on common noctules and other bat species from Rostov Bat Rehabilitation Center in Russia.
  • Hantaviruses were detected in 4.94% of blood samples and 1.1% of fecal samples from common noctules, suggesting these bats can harbor these viruses.
  • Phylogenetic analysis indicates that the detected viruses are closely related to Loanvirus brunaense, previously identified in Central European bats, highlighting the potential for these viruses to be species-specific and geographically widespread.
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Nanosized chiral octahedral M coordination cages were prepared self-assembly of sulfonylcalix[4]arene tetranuclear M(II) clusters (M = Co or Ni) with enantiomerically enriched linkers based on tris(dipyrrinato)cobalt(III) complexes, appended with peripheral carboxylic groups. Two pairs of enantiomers of cages were obtained and unambiguously characterized from a structural point of view, using single crystal X-ray diffraction. Chiral-HPLC was used to evidence the enantiomers.

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Design of reversible cholinesterase inhibitors: Fine-tuning of enzymatic activity by PAMAM-calix-dendrimers.

Int J Biol Macromol

December 2024

A.M. Butlerov Chemical Institute, Kazan Federal University, Kremlevskaya, 18, Kazan 420008, Russian Federation. Electronic address:

Article Synopsis
  • * The study introduces new "fine-tuned" ChE inhibitors called PAMAM-calix-dendrimers, which were designed and synthesized with varying terminal fragments.
  • * Experimental results show that these dendrimers effectively inhibit human acetylcholinesterase and butyrylcholinesterase, with their activity linked to their structure, paving the way for future drug development.
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On some Calcaronea (Porifera: Calcarea) from the Barents Sea and adjacent Polar Basin.

Zootaxa

October 2024

Polar branch of VNIRO («PINRO» named after N.M. Knipovich); Murmansk; Russia.

Four common calcareous sponge species from the Arctic are described. One species, Sycandra rappi Morozov sp. nov.

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The NRF2 transcriptional factor is a member of cellular stress response machinery and is activated in response to oxidative stress caused either by cellular homeostasis imbalance or by environmental challenges. NRF2 levels are stringently controlled by rapid and continuous proteasomal degradation. KEAP1 is a specific NRF2 binding protein that acts as a bridge between NRF2 and the E3 ligase Cullin-3.

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Article Synopsis
  • - This study focuses on new ionic liquids derived from imidazolium and choline containing 5-fluorouracil, exploring their effects on the structure and binding behavior with bovine serum albumin (BSA) using techniques like circular dichroism (CD) and fluorescence quenching.
  • - The research investigates how the length of alkyl chains in these ionic liquids impacts their interaction with BSA and their aggregation tendencies through dynamic light scattering (DLS).
  • - Results reveal that longer alkyl chains do not enhance binding to BSA, but one specific compound showed selectivity against cancer cells that regular 5-fluorouracil lacks, suggesting potential benefits in cancer treatment.
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Article Synopsis
  • - This study investigates how different substances, like denaturants and osmolytes, affect the shape and behavior of the Aβ(16-22) peptide, which is important in Alzheimer's disease.
  • - The researchers found that using specific backbone torsional angles in their simulations helped them achieve more reliable results compared to broader structural measurements.
  • - The findings indicate that certain compounds, like trifluoroethanol and TMAO, encourage compact configurations of the peptide, while others, like urea, lead to elongated forms, which could be relevant for reducing amyloid fibril formation and aiding drug screening.
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Continual attempts have been made to discover excellent nonlinear optical (NLO) materials. Here, we investigate the role of stacking interactions and van der Waals forces in the designed parallel stacked complexes M[9C]M (where M = Li, Na, K, Be, Mg, and Ca) using various quantum chemical and molecular dynamics methods. The thermodynamic stability of the present complexes is also revealed by the computed interaction energy, enthalpy of formation, and Gibbs free energy of formation (Δ).

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The rational design of organic ligands with the aim to control their binding abilities towards different metal ions can be considered as one of the key concepts in supramolecular coordination chemistry. Regarding the macrocyclic compounds of thiacalix[4]arene family, this can be achieved the targeted modulation of macrocyclic platform rigidity as well as the proper choice of appended binding sites. Four macrocyclic salen-type ligands based on lower rim disubstituted thiacalix[4]arene derivatives, adopted in a cone conformation, bearing highly coordinating iminophenolic or catecholic groups and two -CH- moieties as spacers but presenting different abilities to form H-bonds, were chosen to elucidate the interplay between the conformational flexibility of the macrocyclic ligands, propensity to participate in the intermolecular H-bonding and the extraction ability of 3d-metal cations.

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The onset of the coronavirus has highlighted the critical need to swift diagnostic techniques to identify the virus. Metal Organic Frameworks (MOFs) have attracted considerable attention in the field of sensing due to the remarkable characteristics. The present research examines the microwave preparation of naphthalimide-functionalized zeolitic imidazolate framework-8 (NI/ZIF-8) to the detection of coronavirus as a probe.

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