The objective of the study was to determine the effect of carbon nanoparticles produced by different methods on the growth of brain tumor and the development of blood vessels. Glioblastoma multiforme cells were cultured on the chorioallantoic membrane of chicken embryo and after 7 days of incubation, were treated with carbon nanoparticles administered in ovo to the tumor. Both types of nanoparticles significantly decreased tumor mass and volume, and vessel area. Quantitative real-time polymerase chain reaction analysis showed downregulated fibroblast growth factor-2 and vascular endothelial growth factor expression at the messenger ribonucleic acid level. The present results demonstrate antiangiogenic activity of carbon nanoparticles, making them potential factors for anticancer therapy.
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http://dx.doi.org/10.2147/IJN.S25528 | DOI Listing |
Int J Biol Macromol
January 2025
Department of Materials Engineering, Materials and Energy Research Center, Dezful Branch, Islamic Azad University, Dezfool, Iran.
Polymer-based nanocomposite coatings that are enhanced with nanoparticles have gained recognition as effective materials for antibacterial purposes, providing improved durability and biocidal effectiveness. This research introduces an innovative chitosan-based polymer nanocomposite, enhanced with titanium oxide nanopowders and carbon quantum dots. The material was synthesized via the sol-gel process and applied to 316L stainless steel through dip-coating.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia.
A catalytic system has been developed, utilizing metal nanoparticles confined within a chitosan‑carbon black composite hydrogel (M-CH/CB), aimed at improving ease of use and recovery in catalytic processes. The M-CH/CBs were characterized by XRD, SEM, and EDX, the M-CH/CB system demonstrated exceptional catalytic activity in producing hydrogen gas (H) from water and methanol, and in reducing several hazardous materials including 2-nitrophenol (2-NP), 4-nitrophenol (4-NP), 2,6-dinitrophenol (2,6-DNP), acridine orange (ArO), methyl orange (MO), congo red (CR), methylene blue (MB), and potassium ferricyanide (PFC). Among the tested nanocatalysts, CH/CB showed the highest efficiency for H₂ production, while Fe-CH/CB excelled in contaminant reduction (7.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Department of Chemistry, College of Natural and Mathematical Sciences, The University of Dodoma, P.O Box 259, Dodoma, Tanzania. Electronic address:
In this study, a highly crystalline anatase/rutile mixed phase carrageenan/TiO nanocomposite with a larger surface area was synthesized via the sol-gel process and calcined at 450 °C and 650 °C. The synthesized composite materials were characterized by FTIR, XRD, SEM, EDX, TEM, BET and TGA. FTIR confirms the presence of C-Ti-O bond formation in composite.
View Article and Find Full Text PDFBioorg Chem
January 2025
Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland; A. Chełkowski Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland. Electronic address:
Novel pH-sensitive polymeric photosensitizer carriers from the phthalocyanine (Pc) group were investigated as potential photodynamic therapy drugs for the treatment of breast cancer. Their high antiproliferative activity was confirmed by photocytotoxicity studies, which indicated their high efficacy and specificity toward the SK-BR-3 cell line. Importantly, the Pcs encapsulated in the polymeric nanoparticle (NP) carrier exhibited a much better penetration into the acidic environment of tumor cells than their free form.
View Article and Find Full Text PDFJ Colloid Interface Sci
January 2025
School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, China. Electronic address:
Developing efficient catalysts to enhance photoreduction carbon dioxide (CO) into hydrocarbon fuels is a great challenge. As metallic material, molybdenum dioxide (MoO) has very high conductivity and charge density, which make it a promising candidate as photocatalyst. However, its photocatalytic activity is limited by the serious charge recombination.
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