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3D scaffold of hydroxyapatite/β tricalcium phosphate from mussel shells: Synthesis, characterization and cytotoxicity.
Heliyon
January 2025
Department of Cell Biology, Federal University of Paraná, Post box-19031, Zip code -81531-970, Curitiba, PR, Brazil.
Unlabelled: Bone tissue substitutes are increasing in importance. Hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) act as a cell matrix and improve its mechanical properties. One of their raw materials is marine-origin by-products.
View Article and Find Full Text PDFFirst Record and Identification of a Microsporidian Pathogen, Nosema Maddoxi in the Population of Brown Marmorated Stink Bug Halyomorpha Halys (Hemiptera: Pentatomidae) in Türkiye.
Acta Parasitol
January 2025
Department of Molecular Biology and Genetics, Faculty of Arts and Science, Ordu University, Ordu, Türkiye.
Purpose: The brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae), is an invasive and a highly polyphagous species with a strong dispersal capacity. Unfortunately, there is currently no effective control method that can prevent or reduce the economic loss caused by this pest. Among natural enemies, microsporidia cause infections in insects so that they can generally shorten life span, reduce fertility and inhibit growth.
View Article and Find Full Text PDFHeterogeneous and higher-order cortical connectivity undergirds efficient, robust, and reliable neural codes.
iScience
January 2025
Blue Brain Project, École Polytechnique Fédérale de Lausanne (EPFL), Campus Biotech, 1202 6 Geneva, Switzerland.
We hypothesized that the heterogeneous architecture of biological neural networks provides a substrate to regulate the well-known tradeoff between robustness and efficiency, thereby allowing different subpopulations of the same network to optimize for different objectives. To distinguish between subpopulations, we developed a metric based on the mathematical theory of simplicial complexes that captures the complexity of their connectivity by contrasting its higher-order structure to a random control and confirmed its relevance in several openly available connectomes. Using a biologically detailed cortical model and an electron microscopic dataset, we showed that subpopulations with low simplicial complexity exhibit efficient activity.
View Article and Find Full Text PDFNew nucleolin-containing cytoplasmic bodies in an archamoebian protist Pelomyxa belevskii (Amoebozoa, Archamoebae, Pelobiontida).
Protoplasma
January 2025
Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, 194064, Russia.
The representatives of the archamoebian genus Pelomyxa are amoeboid anaerobic protists that inhabit fresh-water anoxic sediments, and most of them are usually multinucleate. The cytoplasm of these unicellular organisms is highly complicated and contains numerous vacuoles of different types, as well as a wide range of prokaryotic endocytobionts, agglomerations of glycogen, lipids, etc. Among the great variety of cytoplasmic structures in P.
View Article and Find Full Text PDFCan there be calm during a cytokine storm? Immune checkpoint pathways affecting the severity of COVID-19 disease.
Front Microbiol
December 2024
Department of Medical Microbiology and Immunology, Medical School, University of Pecs, Pecs, Hungary.
Introduction: The COVID-19 pandemic has become a global health crisis, eliciting varying severity in infected individuals. This study aimed to explore the immune profiles between moderate and severe COVID-19 patients experiencing a cytokine storm and their association with mortality. This study highlights the role of PD-1/PD-L1 and the TIGIT/CD226/CD155/CD112 pathways in COVID-19 patients.
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