Article
Chemistry, Multidisciplinary
Lisa Zschiesche, Christina Janko, Bernhard Friedrich, Benjamin Frey, Julia Band, Stefan Lyer, Christoph Alexiou, Harald Unterweger
Summary: Dextran-coated superparamagnetic iron oxide nanoparticles (SPIONDex) of different sizes can be used as contrast agents in magnetic resonance imaging (MRI) without interfering with immune response.
Article
Chemistry, Multidisciplinary
Radek Ostruszka, Denisa Pulpanova, Tomas Pluhacek, Ondrej Tomanec, Petr Novak, Daniel Jirak, Karolina Siskova
Summary: We developed a simple one-pot synthesis for the reproducible generation of luminescent and magnetically active bimetallic nanocomposites. The nanocomposites were synthesized by exploiting bovine serum albumin (BSA) to simultaneously uptake Au (III) and Fe (II)/Fe (III) ions. These nanocomposites, called AuNCs-BSA-SPIONs, showed potential applicability in luminescent features measurement as well as magnetic resonance (MR) imaging and relaxometry. The bright luminescence of the nanocomposites at around 656 nm made them competitive with commercial MRI contrast agents. The biocompatibility and long-term stability of the nanocomposites were also validated.
Article
Materials Science, Multidisciplinary
Ji Hye Jin, Hyeji Um, Ji Hyeon Oh, Youngbuhm Huh, Yuna Jung, Dokyoung Kim
Summary: A new nano-formulation based on gadolinium silicate-coated porous silicon nanoparticles (pSiNPs) is introduced as an MRI contrast agent and drug delivery carrier. The newly developed surface coating method using gadolinium ions (Gd3+) resulted in nanoparticles (named pSiNPs-Gd) that exhibited T-1-type MR responses and high drug encapsulation efficacy. The nanoparticle characterization, MR signal, cytotoxicity, and drug release profile were systematically analyzed. These findings contribute to the development of multi-functional pSiNPs-based nanotherapeutics and their applications in various fields.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
Shadie Hatamie, Po-Jen Shih, Bo-Wei Chen, Hua-Ju Shih, I-Jong Wang, Tai-Horng Young, Da-Jeng Yao
Summary: An electromagnet device was fabricated to improve bovine corneal endothelial cell (BCEC) migration, enhance cell energy, and facilitate symmetric cell distribution in corneal surfaces using dendrimer-coated SPIONs. The in vitro biocompatibility of the SPIONs was confirmed, with no toxicity noted on BCECs within 24 hours. Cells treated with dendrimer-coated SPIONs showed a higher wound healing rate under a magnetic field, with upregulation of specific genes observed in BCECs under the magnetic field. The three-dimensional dispersion of BCECs containing dendrimer-coated SPIONs under a magnetic field was evaluated using COMSOL Multiphysics software, revealing a vortex pattern layer corresponding to the electromagnet's displacement on the corneal surface. MRI indicated that dendrimer-coated SPIONs can be used as a T-2 contrast agent.
Article
Chemistry, Physical
Nan Zhou, Jin Jia, Shuyuan Zhao, Dongxing Zhang, Mingxiang Feng
Summary: The surface of carbon fibers is modified by a sizing agent composed of sulfonated polyether ether ketone (SPEEK) and carboxylated carbon nanotubes (MWCNTS), which improves the interfacial binding between carbon fibers and polyetheretherketone (PEEK) matrix. The flexural strength and interlaminar shear strength of the modified composites are significantly enhanced by 74.2% and 84.2% compared to CF/PEEK composites without sizing agent. Coating with SPEEK-MWCNTS is confirmed to be an essential approach to construct an excellent interface between the reinforcement phase and thermoplastic matrix.
SURFACES AND INTERFACES
(2023)
Article
Metallurgy & Metallurgical Engineering
Xiang-juan Meng, Xiao-min Zeng, Wei Jiang, Si-yuan Li, Qiao-kun Du, Ze-kai Ji, Wei-wei Zhu, Chuang Liu, Cheng-du Liang, Min Ling, Li-jing Yan
Summary: An amino-modified Cu current collector was fabricated in this study to tackle the critical binding problem between the Cu current collector and silicon anode caused by the volume variation of silicon particles during cycling. The amino groups on the Cu* surface increased its hydrophilicity, facilitating the curing process of the aqueous slurry on its surface. In addition, these amino groups formed stable amide bonds with carboxyl groups from the adopted polyacrylic acid (PAA) binder. The combined action of covalent bonds and mechanical interlocking effectively reduced contact loss inside the electrode, resulting in improved electrochemical performance.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Green & Sustainable Science & Technology
Songtao Lv, Long Hu, Chengdong Xia, Xinghai Peng, Milkos Borges Cabrera, Shuaicheng Guo, Lingyun You
Summary: This study investigated the effect of silane coupling agent surface-treated fish scale powder (ST-FSP) on asphalt performance and found that the surface treatment may further improve the modification effect of FSP on asphalt binder. The study also showed that ST-FSP could increase the storage modulus and loss modulus of asphalt binder, with minimal influence on the low- and intermediate-temperature behavior of the asphalt matrix. Mechanism analysis with FT-IR spectroscopy confirmed the feasibility of grafting silane coupling agent onto FSP, while fluorescence microscope and scanning electron microscope observations revealed enhanced dispersibility and reduced agglomeration of FSP in the asphalt.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Yimei Zheng, Yu Chang, Biying Luo, Hui Teng, Lei Chen
Summary: Glycosylation of ovalbumin (OVA) with dextran (Dex) through controlled wetheating resulted in the generation of a more flexible glycoconjugate, leading to improved emulsifying properties with enhanced emulsifying activity and stability. The study demonstrated that temperature was a key factor in glycosylation degree and browning intensity, with higher temperatures accelerating the reaction and improving emulsibility.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Instruments & Instrumentation
Edurne Luque-Michel, Laurent Lemaire, Maria J. Blanco-Prieto
Summary: Researchers developed polymeric nanoparticles loaded with SPION and DOX, successfully achieving targeted accumulation in tumor tissue in experimental mice, leading to a reduction in tumor growth rate.
DRUG DELIVERY AND TRANSLATIONAL RESEARCH
(2021)
Article
Polymer Science
Weijie Ning, Yawen Yang, Ding Zhang, Renming Pan
Summary: A simple and controllable method for preparing hydrophobic and oleophobic fire extinguishing agent was developed to solve the problem of common ultrafine powder fire extinguishing agent being unable to put out oil fire. The modified particles exhibited outstanding hydrophobicity and oleophobicity, effectively preventing fuel evaporation and gradually extinguishing the flame.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Polymer Science
Dong Wang, Zhenghai Tang, Ruoyan Huang, Haoming Li, Chengfeng Zhang, Baochun Guo
Summary: This study presents a facile synthesis method for alkoxysilyl-functionalized polysulfides (SPVs) and their application as interfacial modifiers in silica-filled rubber composites. Compared to traditional sulfur-containing silane coupling agents, SPVs exhibit better interfacial adhesion and silica dispersion, leading to improved composite properties.
Article
Agriculture, Dairy & Animal Science
Ondrej Simonik, Filipa Bubenickova, Lucie Tumova, Michaela Frolikova, Vishma Pratap Sur, Jan Beran, Katerina Havlikova, Lenka Hackerova, Daniela Spevakova, Katerina Komrskova, Pavla Postlerova
Summary: This study evaluated the effect of biocompatible polysaccharides, dextran and pentaisomaltose, on the cryopreservation of boar sperm and used computational modeling to predict their interaction with sperm surface proteins. The results showed that the modified extender with pentaisomaltose had a lower impact on sperm quality parameters. Pentaisomaltose represented a promising compound for the elimination or reduction of glycerol in extenders for boar sperm cryopreservation.
Article
Materials Science, Multidisciplinary
Shizhen Jia, Hui Cao, Xiangchao Liang, Shuang Wu, Rong Zeng, Mei Tu
Summary: Anti-bioadhesive polyvinyl alcoholformaldehyde sponges with zwitterionic coating were prepared by dip-coating process using PVAm-PC and KH560. The modified sponges had unchanged water vapor transmission rate and decreased swelling degree. They showed good resistance to bacterial adhesion and could significantly reduce the adhesion of fibroblasts.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Seyed Mojtaba Mashmoul Moghadam, Mona Alibolandi, Maryam Babaei, Jafar Mosafer, Amir Sh. Saljooghi, Mohammad Ramezani
Summary: This study reported the synthesis of a theranostic platform targeting cancer cells, showing significant advantages in guided drug delivery, enhanced cellular toxicity, and therapeutic outcomes. The prepared platform also demonstrated higher tumor accumulation and residence time through MRI imaging, providing a safe and effective platform for fighting against cancer.
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
A. Nahar, Kazi Hanium Maria, S. Liba, Md Anwaruzzaman, M. N. Khan, A. Islam, Shamima Choudhury, S. M. Hoque
Summary: Performance evaluation of folate-chitosan coated cobalt ferrite nanoparticles was carried out using in vivo angiography studies. The results showed that these nanoparticles exhibited good crystallinity and dispersion, and demonstrated higher efficacy as a contrast agent in fluorescence angiography.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
