523 results match your criteria: "V. N. Karazin Kharkiv National University[Affiliation]"
Protein Sci
September 2022
Department of Biochemistry and Molecular Biology, The University of Kansas Medical Center, Kansas City, Kansas, USA.
Cancerous tissues undergo extensive changes to their cellular environments that differentiate them from healthy tissues. These changes include changes in extracellular pH and Ca concentrations, and the exposure of phosphatidylserine (PS) to the extracellular environment, which can modulate the interaction of peptides and proteins with the plasma membrane. Deciphering the molecular mechanisms of such interactions is critical for advancing the knowledge-based design of cancer-targeting molecular tools, such as pH-low insertion peptide (pHLIP).
View Article and Find Full Text PDFPeerJ
January 2023
Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics of the CAS, v.v.i., Libechov, Czech Republic.
Interspecific hybridization can disrupt canonical gametogenic pathways, leading to the emergence of clonal and hemiclonal organisms. Such gametogenic alterations usually include genome endoreplication and/or premeiotic elimination of one of the parental genomes. The hybrid frog exploits genome endoreplication and genome elimination to produce haploid gametes with chromosomes of only one parental species.
View Article and Find Full Text PDFBiogerontology
February 2023
Research Institute of Biology, V.N. Karazin Kharkiv National University, Svobody sq, 4, Kharkiv, 61022, Ukraine.
Due to its unique redox chemistry, nanoceria is considered as potent free radical scavenger and antioxidant. However, their protective capacity in aging organisms remains controversial. To detect the anti-aging effects associated with the redox activity of 2 and 10 nm nano-CeO2, different test systems were used, including in vitro analysis, in situ assay of mitochondria function and in vivo studies of suitable nano-CeO on aging of male Wistar rats from 22 months-old to the end of life.
View Article and Find Full Text PDFSensors (Basel)
August 2022
Department of Information and Communication Systems Security, Faculty of Comupter Science, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine.
Cryptographic algorithms are used to ensure confidentiality, integrity and authenticity of data in information systems. One of the important areas of modern cryptography is that of symmetric key ciphers. They convert the input plaintext into ciphertext, representing it as a random sequence of characters.
View Article and Find Full Text PDFMed Chem
March 2023
Department of Pharmaceutical Chemistry, National University of Pharmacy, 53 Pushkinska st., 61002 Kharkiv, Ukraine.
Introduction: An analysis of the literature on the painkillers long used in traditional medicine, which are isolated from plant materials, has shown that many of them are alkylamides of various carboxylic acids. This fact served as the basis for the study of a large group of N-alkyl-4- methyl-2,2-dioxo-1H-2λ,1-benzothiazine-3-carboxamides as potential new analgesics. The objects of the study were synthesized in the traditional way involving the initial conversion of 4-methyl- 2,2-dioxo-1H-2λ,1- benzothiazine-3-carboxylic acid to imidazolide, in which imidazolide was used as an acylating agent.
View Article and Find Full Text PDFFungal Syst Evol
June 2022
Senckenberg Biodiversity and Climate Research Center, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany.
Seven species complexes are treated, namely species complex (FASC) (two species), species complex (FBSC) (five species), species complex (FBURSC) (three species), species complex (FCAMSC) (three species), species complex (FCSC) (eight species), species complex (FCCSC) (five species) and the species complex (FCOSC) (four species). New species include from soil (Zimbabwe), and from soil associated with (Netherlands). New combinations include and Newly validated taxa include , , , and .
View Article and Find Full Text PDFAnn Med Surg (Lond)
August 2022
Faculty of Pharmacy, University of Ibadan, Ibadan, Oyo State, Nigeria.
The two major global immunization agenda framings (Missed Opportunity for Immunisation (MOI) vs. Immunisation Defaulting) are interchangeably and inappropriately used in public health research and practice, with flawed or misleading strategies recommended and adopted in various settings around the world. This is demonstrated by the fact that many opportunities to incorporate findings from immunization coverage research into policy are squandered.
View Article and Find Full Text PDFObjective: The aim: Determination of anatomical and topographical relationships of the eyeball anterior segment structures to assess possible glaucoma development risk factors in SED patients with myopic refraction.
Patients And Methods: Materials and methods: Patients, aged from 10 to 34, have been examined since 2009. All the patients have undergone required medic and genetic examination as well as generally accepted ophthalmological one.
Langmuir
August 2022
Department of Physical Chemistry, V. N. Karazin Kharkiv National University, 61022 Kharkiv, Ukraine.
It is known that fullerenes are poorly soluble in polar solvents, but readily form colloidal solutions in such media. These solutions are typically solvophobic (hydrophobic when prepared in water), that is, thermodynamically unstable colloidal systems with negatively charged particles. To understand the stability factors of a colloidal system, the thresholds for coagulation of a sol or suspension by electrolytes are of key importance.
View Article and Find Full Text PDFBiomed Res Int
August 2022
Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa.
Background: (garden cress) is a member of the Brassicaceae family that has been utilized for medicinal and culinary purposes in centuries. Anti-inflammatory, antioxidant, immunomodulatory, hepatoprotective, antihypertensive, antiasthmatic, and hypoglycemic properties are found in various portions of the plant. The anti-inflammatory, antioxidant, and immunomodulatory effects of L.
View Article and Find Full Text PDFReumatologia
July 2022
Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Kharkiv, Ukraine.
Inroduction: The results of experimental and clinical studies in recent years indicate that the transplantation of multipotent mesenchymal stromal cells (MMSCs) is a possible approach for the "restoration" of the immune system of patients with autoimmune diseases, in particular, rheumatoid arthritis. However, the strength and duration of the effect vary greatly, which indicates incomplete correction of the tested parameters, thereby opening up the prospect of improving this method of treatment by choosing dose-time parameters and methods of their administration. The aim of this research was to determine the indices of cellular immunity in animals with adjuvant arthritis and therapy with cryopreserved MMSCs derived from adipose and cartilage tissues.
View Article and Find Full Text PDFPersoonia
July 2022
Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands.
Novel species of fungi described in this study include those from various countries as follows: , , and on soil, from stem cankers of , from stem of , and from leaves of , as endophyte from roots of , from stem of , from leaves of × and from roots of , from intertidal wood and (incl. gen. nov.
View Article and Find Full Text PDFObjective: The aim: To identify clinical and immunological features of acute rotavirus gastroenteritis occurring against the background of Epstein-Barr virus infection.
Patients And Methods: Materials and methods: The study involved examination of 56 children. Of them, 33 children (1 group) did not have a background infection and 23 patients (2 group) suffered from rotavirus infection on the background of the latent form of Epstein-Barr virus infection.
Int J Environ Res Public Health
June 2022
Institute for Frontier Areas in Psychology and Mental Health, 79098 Freiburg, Germany.
The characteristics of the individual's time perspective in relation to changes in social, economic, and political conditions are of major conceptual interest. We assessed the time orientations of 1588 Ukrainian students living in two different regions (western and south-eastern Ukraine) with the Zimbardo Time Perspective Inventory (ZTPI) before (2010-2013) and during (2014-2016) the socioeconomic, political, and military crises which started in 2014, eight years before the war in 2022. We applied ANOVAs with the ZTPI dimensions as dependent variables and the period of testing (precrisis, postcrisis) as an independent variable for the two Ukrainian regions separately.
View Article and Find Full Text PDFConfl Health
June 2022
Department of Field Operation and Project Coordination, Health Pooled Fund, Juba, South Sudan.
Background: The burden of malaria remains the highest in sub-Saharan Africa and South Sudan is not an exception. The country has borne the brunt of years of chronic warfare and remains endemic of malaria, with increasing mortality and morbidity. Limited data still exists on factors influencing the recurrence of severe malaria, especially in emergency contexts such as South Sudan, affected by various conflicts and humanitarian situations.
View Article and Find Full Text PDFWiad Lek
May 2022
KHARKIV MEDICAL ACADEMY OF POSTGRADUATE EDUCATION, KHARKIV, UKRAINE.
Objective: The aim: The aim was to study the relationships of IRS-1 gene polymorphism with indicators of the structural and functional state of the heart and blood vessels in patients with arterial hypertension under conditions of different metabolic comorbidity and body weight.
Patients And Methods: Materials and methods: We examined 340 patients with arterial hypertension with different body weight and different types of metabolic comorbidity and 30 healthy individuals aged 45-55. Anthropometric, Biochemical, Molecular genetic methods, Instrumental, Statistical methods were used.
Porcine circovirus type 2 (PCV2) is responsible for a number of porcine circovirus-associated diseases (PCVAD) that can severely impact domestic pig herds. For a non-enveloped virus with a small genome (1.7 kb ssDNA), PCV2 is remarkably diverse, with eight genotypes (a-h).
View Article and Find Full Text PDFStud Health Technol Inform
May 2022
Central Research Institute of Armament and Military Equipment of Armed Forces of Ukraine, Ukraine.
In this paper, we present an approach to improve the accuracy and reliability of ECG classification. The proposed method combines features analysis of linear and non-linear ECG dynamics. Non-linear features are represented by complexity measures of assessment of ordinal network non-stationarity.
View Article and Find Full Text PDFSensors (Basel)
April 2022
Department of Computer Science and Automatics, University of Bielsko-Biala, Willowa St. 2, 43309 Bielsko-Biala, Poland.
Direct spread spectrum technology is traditionally used in radio communication systems with multiple access, for example, in CDMA standards, in global satellite navigation systems, in Wi-Fi network wireless protocols, etc. It ensures high security and reliability of information transfer. In addition, spread spectrum technology provides the transmitted signals with a noise-like appearance, thus hiding the semantic content of the messages.
View Article and Find Full Text PDFActa Crystallogr E Crystallogr Commun
May 2022
SSI "Institute for Single Crystals" NAS of Ukraine, 60 Nauky ave., Kharkiv, 61001, Ukraine.
The hemihydrate of 4-[(benzyl-amino)-carbon-yl]-1-methyl-pyridinium bromide, CHNO·Br·0.5HO, was studied by single-crystal and powder X-ray diffraction methods. In the asymmetric unit, two organic cations of similar conformation, two bromide anions and one water mol-ecule are present.
View Article and Find Full Text PDFChemphyschem
July 2022
Inorganic Chemistry Department, Taras Shevchenko National University of Kyiv, 12, Lva Tolstogo St., 01601, Kyiv, Ukraine.
New lanthanide dimethyl-N-benzoylamidophosphate (HL) based tetrakis-complexes NEt [LnL ] (Ln =La, Nd, Sm, Eu, Gd, Tb, Dy) are reported. The complexes are characterized by means of NMR, IR, absorption, and luminescent spectroscopy as well as by elemental, X-Ray, and thermal gravimetric analyses. The phenyl groups of the four ligands of the complex anion are directed towards one side, while the methoxy groups are directed in the opposite side, which makes the complexes under consideration structurally similar to calixarenes.
View Article and Find Full Text PDFInt J Ment Health Addict
May 2022
Regional Alcohol and Drug Abuse Research (RADAR) Center, Ben Gurion University of the Negev, 84105 Beer Sheva, Israel.
RSC Adv
February 2022
Laboratory of Micro and Nano Optics, Institute of Radio-Physics and Electronics NASU Kharkiv 61085 Ukraine
We report a prediction of the optical effect apparently not discussed earlier. As known both from theory and experiment, the gratings of flat graphene strips lying on dielectric substrates display moderate-Q resonances on the strip plasmon modes in the H-polarization case. In the plasmon resonances, high reflectance and absorbance are observed.
View Article and Find Full Text PDFJ Med Life
February 2022
Department of Cancer Surgery, Radiation Therapy and Palliative Care, Kharkiv Medical Academy of Postgraduate Education, Kharkiv, Ukraine.
Int J Mol Sci
March 2022
Institute of Chemistry and School of Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine.
α-Aminoamidines are promising reagents for the synthesis of a diverse family of pyrimidine ring derivatives. Here, we demonstrate the use of α-aminoamidines for the synthesis of a new series of 5,6,7,8-tetrahydroquinazolines by their reaction with bis-benzylidene cyclohexanones. The reaction occurs in mild conditions and is characterized by excellent yields.
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