The effect of standardized mental stress on the hemostatic system was studied in 160 patients with coronary heart disease. The diagnosis of coronary atherosclerosis was documented by selective coronary angiographic findings. Emotional tension was modelled using the method of counting with interswitching in conditions of time deficit, irritating light and sound signals, as well as critical remarks about the work performed. According to the protective-adaptive activation of the anti-clotting system, the patients were divided into two groups: 1 with activation of heparin activity of the blood and fibrinolysis, 2 with depressed fibrinolysis and lowered blood heparin. Prior to the onset of the study the patients of both groups exhibited hypercoagulation as compared with the control group. The maximum degree of hypercoagulation was observed in the second group patients. Hypercoagulative changes both at rest and under stress were shown to depend on the degree of coronary artery damage.
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Pharmaceuticals (Basel)
December 2024
Laboratory of Molecular Pharmacology and Bioactive Compounds, Postgraduate Program in Health Sciences, São Francisco University, 215 São Francisco de Assis Avenue, Bragança Paulista 12916-900, São Paulo, Brazil.
Treating chronic wounds incurs substantial costs for Brazil's Unified Health System. Natural compounds, particularly propolis, are increasingly explored as low-cost alternatives due to their healing properties. Brazilian green propolis, distinct in its chemical composition, has garnered scientific interest.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
mRNA-based vaccines against the COVID-19 pandemic have propelled the use of nucleic acids for drug delivery. Conventional lipid-based carriers, such as liposomes and nanolipogels, effectively encapsulate and deliver RNA but are hindered by issues such as premature burst release and immunogenicity. To address these challenges, cell membrane-coated nanoparticles offer a promising alternative.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Physical Chemistry, Institute of Chemical Sciences, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square 3, 20-031 Lublin, Poland.
In this article, we report on the research on the synthesis of composites based on a porous, highly ordered silica material modified by a metallic nanophase and chitosan biofilm. Due to the ordered pore system of the SBA-15 silica, this material proved to be a good carrier for both the biologically active nanophase (highly dispersed silver nanoparticles, AgNPs) and the adsorption active phase (chitosan). The antimicrobial susceptibility was determined against Gram-positive ATCC 25923, Gram-negative bacterial strains ( ATCC 25922, ATCC 700603, and ATCC 27853), and yeast ATCC 90028.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Physics, M.V. Lomonosov Moscow State University, 1/2 Leninskie Gory, 119991 Moscow, Russia.
Biomimetic hydrogels have garnered increased interest due to their considerable potential for use in various fields, such as tissue engineering, 3D cell cultivation, and drug delivery. The primary challenge for applying hydrogels in tissue engineering is accurately evaluating their mechanical characteristics. In this context, we propose a method using scanning ion conductance microscopy (SICM) to determine the rigidity of living human breast cancer cells MCF-7 cells grown on a soft, self-assembled Fmoc-FF peptide hydrogel.
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December 2024
Department of Experimental and Clinical Physiology, Centre for Preclinical Research, Medical University of Warsaw, 02-097 Warsaw, Poland.
Numerous compounds involved in the regulation of the cardiovascular system are also engaged in the control of metabolism. This review gives a survey of literature showing that arginine vasopressin (AVP), which is an effective cardiovascular peptide, exerts several direct and indirect metabolic effects and may play the role of the link adjusting blood supply to metabolism of tissues. Secretion of AVP and activation of AVP receptors are regulated by changes in blood pressure and body fluid osmolality, hypoxia, hyperglycemia, oxidative stress, inflammation, and several metabolic hormones; moreover, AVP turnover is regulated by insulin.
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