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Journal articles on the topic 'Iron oxide superparamagnetic nanoparticles'

Author: Grafiati

Published: 13 April 2024

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1

Lu, Qizheng, Haibo Liu, Hao Zheng, Youming Zhang, Jinbo Ou, Jieyun You, Qi Zhang, et al. "SS-31 Modification Inhibits the Proinflammatory Effect on Macrophages Induced by Superparamagnetic Iron Oxide Nanoparticles." Journal of Biomedical Nanotechnology 18, no. 5 (May 1, 2022): 1413–22. http://dx.doi.org/10.1166/jbn.2022.3359.

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Superparamagnetic iron oxide nanoparticles can induce macrophage polarization into the proinflammatory M1-type. This adverse effect is very likely to restrict the applications of superparamagnetic iron oxide nanoparticles in various inflammatory medical conditions. To inhibit the proinflammatory effect, the mitochondrial-targeted antioxidant peptide SS-31 was physically adsorbed on superparamagnetic iron oxide nanoparticles to develop superparamagnetic iron oxide nanoparticles@SS-31. The macrophages (RAW 264.7) were incubated with superparamagnetic iron oxide nanoparticles or superparamagnetic iron oxide nanoparticles@SS-31 at a concentration of 50 μg Fe3O4/mL for 24 hours. Compared to the superparamagnetic iron oxide nanoparticles group, the superparamagnetic iron oxide nanoparticles@SS-31 group demonstrated significantly reduced cell damage, as evidenced by the inhibition of cell viability loss, early cell apoptosis and the production of reactive oxygen species. Moreover, the proinflammatory factor TNF-α and M1-type cell surface markers CD86 and CD80 were significantly downregulated in the superparamagnetic iron oxide nanoparticles@SS-31 group as shown by enzyme-linked immunosorbent assay and flow cytometric analysis. Notably, compared with the superparamagnetic iron oxide nanoparticles group, levels of the anti-inflammatory factors IL-10, TGF-β and the M2-type cell surface marker CD163 were markedly upregulated in the superparamagnetic iron oxide nanoparticles@SS-31 group. In addition, severe disruption of the mitochondrial ultrastructure was observed by transmission electron microscopy in the superparamagnetic iron oxide nanoparticles group, but the superparamagnetic iron oxide nanoparticles@SS-31 group displayed structurally intact mitochondria. All of these results suggest that superparamagnetic iron oxide nanoparticles can promote macrophage M1-type polarization by inducing oxidative stress and mitochondrial damage, while superparamagnetic iron oxide nanoparticles@SS-31 can significantly inhibit superparamagnetic iron oxide nanoparticles-induced toxicity by releasing SS-31 to exert mitochondrial-targeted antioxidant and anti-inflammatory effects, indicating that the strategy of coloading the SS-31 peptide into superparamagnetic iron oxide nanoparticles has the potential to alleviate superparamagnetic iron oxide nanoparticles-induced proinflammatory effects.

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2

Neumaier, Carlo Emanuele, Gabriella Baio, Silvano Ferrini, Giorgio Corte, and Antonio Daga. "MR and Iron Magnetic Nanoparticles. Imaging Opportunities in Preclinical and Translational Research." Tumori Journal 94, no. 2 (March 2008): 226–33. http://dx.doi.org/10.1177/030089160809400215.

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Ultrasmall superparamagnetic iron oxide nanoparticles and magnetic resonance imaging provide a non-invasive method to detect and label tumor cells. These nanoparticles exhibit unique properties of superparamagnetism and can be utilized as excellent probes for magnetic resonance imaging. Most work has been performed using a magnetic resonance scanner with high field strength up to 7 T. Ultrasmall superparamagnetic iron oxide nanoparticles may represent a suitable tool for labeling molecular probes that target specific tumor-associated markers for in vitro and in vivo detection by magnetic resonance imaging. In our study, we demonstrated that magnetic resonance imaging at 1.5 T allows the detection of ultrasmall superparamagnetic iron oxide nanoparticle conjugated antibody specifically bound to human tumor cells in vitro and in vivo, and that the magnetic resonance signal intensity correlates with the concentration of ultrasmall superparamagnetic iron oxide nanoparticle antibody used and with the antigen density at the cell surface. The experiments were performed using two different means of targeting: direct and indirect magnetic tumor targeting. The imaging of tumor antigens using immunospecific contrast agents is a rapidly evolving field, which can potentially aid in early disease detection, monitoring of treatment efficacy, and drug development. Cell labeling by iron oxide nanoparticles has emerged as a potentially powerful tool to monitor trafficking of a large number of cells in the cell therapy field. We also studied the labeling of natural killer cells with iron nanoparticles to a level that would allow the detection of their signal intensity with a clinical magnetic resonance scanner at 1.5 T. Magnetic resonance imaging and iron magnetic nanoparticles are able to increase the accuracy and the specificity of imaging and represent new imaging opportunities in preclinical and translational research.

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Sibov, Tatiana Taís, Liza Aya Mabuchi Miyaki, Javier Bustamante Mamani, Luciana Cavalheiro Marti, Luiz Roberto Sardinha, Lorena Favaro Pavon, Daniela Mara de Oliveira, Walter Humberto Cardenas, and Lionel Fernel Gamarra. "Evaluation of umbilical cord mesenchymal stem cell labeling with superparamagnetic iron oxide nanoparticles coated with dextran and complexed with Poly-L-lysine." Einstein (São Paulo) 10, no. 2 (June 2012): 180–88. http://dx.doi.org/10.1590/s1679-45082012000200011.

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OBJECTIVE: The objective of this study was to evaluate the effect of the labeling of umbilical cord vein derived mesenchymal stem cells with superparamagnetic iron oxide nanoparticles coated with dextran and complexed to a non-viral transfector agent transfector poly-L-lysine. METHODS: The labeling of mesenchymal stem cells was performed using the superparamagnetic iron oxide nanoparticles/dextran complexed and not complexed to poly-L-lysine. Superparamagnetic iron oxide nanoparticles/dextran was incubated with poly-L-lysine in an ultrasonic sonicator at 37°C for 10 minutes for complex formation superparamagnetic iron oxide nanoparticles/dextran/poly-L-lysine by electrostatic interaction. Then, the mesenchymal stem cells were incubated overnight with the complex superparamagnetic iron oxide nanoparticles/dextran/poly-L-lysine and superparamagnetic iron oxide nanoparticles/dextran. After the incubation period the mesenchymal stem cells were evaluated by internalization of the complex superparamagnetic iron oxide nanoparticles/dextran/poly-L-lysine and superparamagnetic iron oxide nanoparticles/dextran by Prussian Blue stain. Cellular viability of labeled mesenchymal stem cells was evaluated by cellular proliferation assay using 5,6-carboxy-fluorescein-succinimidyl ester method and apoptosis detection by Annexin V- Propidium Iodide assay. RESULTS: mesenchymal stem cells labeled with superparamagnetic iron oxide nanoparticles/dextran without poly-L-lysine not internalized efficiently the superparamagnetic iron oxide nanoparticles due to its low presence detected within cells. Mesenchymal stem cells labeled with the complex superparamagnetic iron oxide nanoparticles/dextran/poly-L-lysine efficiently internalized the superparamagnetic iron oxide nanoparticles due to greater presence in the cells interior. The viability and apoptosis assays demonstrated that the mesenchymal stem cells labeled and not labeled respectively with the superparamagnetic iron oxide nanoparticles/dextran/poly-L-lysine continue to proliferate over seven days and the percentage of cells in early or late apoptosis is low compared to the percentage of live cells over the three days. CONCLUSION: Our results showed that the use of poly-L-lysine complexed with superparamagnetic iron oxide nanoparticles/dextran provides better internalization of these superparamagnetic iron oxide nanoparticles in mesenchymal stem cells Thus, we demonstrated that this type of labeling is not cytotoxic to the mesenchymal stem cells, since the viability and apoptosis assays showed that the cells remain alive and proliferating. The efficiency of this type of labeling in mesenchymal stem cells can provide non-invasive methods for monitoring these cells in vivo.

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4

Lüdtke-Buzug, Kerstin, and Zuzana Penxová. "Superparamagnetic Iron Oxide Nanoparticles." Current Directions in Biomedical Engineering 5, no. 1 (September 1, 2019): 307–9. http://dx.doi.org/10.1515/cdbme-2019-0077.

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AbstractThe direct detection of the spatial distribution of Superparamagnetic Iron Oxide Nanoparticles (SPIONs) as a tracer for Magnetic Particle Imaging (MPI) enables threedimensional functional images with high spatial and temporal resolution. The commercially available tracers have not been developed primarily for MPI. Therefore, they do not sufficiently contribute to the desired image quality. Hence, optimizing the SPIONs during the production process is of interest. A peculiarity of the here presented synthesis method - the alkaline coprecipitation - is that this process takes place under ultrasonic control. The use of ultrasound creates extraordinary reaction conditions through sonochemical phenomena, such as formation, growth and implosive collapse of cavitation bubbles within a liquid. In addition, the ultrasonic waves and the oscillation of the medium improve the mixing process and thus ensure the homogenization during the synthesis. The objective of this study is the variation of ultrasonic frequencies and the type of used dextran as coating material, to provide SPIONs with better performance for MPI and more suitable properties for in vivo application. The focus of the optimization is to increase the magnetite core size while simultaneously reducing the hydrodynamic size. The experiments have shown that both, the ultrasound frequency and the molecular weight of used dextran, influence the properties of the SPIONs.

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5

Anzai, Yoshimi. "Superparamagnetic Iron Oxide Nanoparticles." Topics in Magnetic Resonance Imaging 15, no. 2 (April 2004): 103–11. http://dx.doi.org/10.1097/01.rmr.0000130602.65243.87.

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6

Vazhenina I.G., Stolyar S.V., Tyumentseva A.V., Volochaev M.N., Iskhakov R.S., Komogortsev S.V., Pyankov V. F., and Nikolaeva E.D. "Study of magnetic iron oxide nanoparticles coated with silicon oxide by ferromagnetic method." Physics of the Solid State 65, no. 6 (2023): 884. http://dx.doi.org/10.21883/pss.2023.06.56095.01h.

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Magnetic nanoparticles of magnetite with a size of ~8 nm synthesized with a different type of coating were studied by ferromagnetic resonance in the temperature range from 7 to 300 K. The features of the experimental temperature dependences of the parameters of the ferromagnetic resonance curve (the magnitude of the resonant field, line width and intensity) and their approximation allowed us to estimate the values of characteristic temperatures. Firstly, the value of the Vervey temperature and the dependence of its value on the type of coating were determined. Secondly, the temperature of transition of nanoparticles to the superparamagnetic state (blocking temperature) and the temperature range within which the magnetic structure of the outer shell of the magnetic nanoparticle is in the spin glass state are established Keywords: iron oxide nanoparticles, ferromagnetic resonance, superparamagnetism, blocking temperature.

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7

D, Sowbhagya. "Superparamagnetic Iron Oxide Nanoparticles [SPION] and its Diversified Applications in the Medical Field: A Mini-Review." Nanomedicine & Nanotechnology Open Access 8, no. 3 (2023): 1–10. http://dx.doi.org/10.23880/nnoa-16000248.

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Late 21st century, extensive research has been carried out on nanoparticles due to their significant role in a supercapacitor, energy storage, sensing, catalysis, green gas production, and photocatalysis due to their semiconductor behavior, costeffective and simple methodology. The utilization of nanoparticle (NP) material provides numerous advantages in biomedical applications due to its unique properties. Superparamagnetic iron oxide nanoparticles (SPIONs) have been recognized in numerous fields including nanobiotechnology, biomedical engineering, and many other fields for their inestimable applications. Superparamagnetic properties and the smaller size of SPIONs are the major reasons for its utilization in various fields. In this study, we focused on different roots to synthesize the ION Super Paramagnetic Iron oxide nanoparticles (SPION), and biomedical applications due to their non-toxic in biological systems.

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Rhee, Ilsu. "Superparamagnetic Transition in Ultrasmall Superparamagnetic Iron Oxide Nanoparticles." Journal of the Korean Physical Society 54, no. 4 (April 15, 2009): 1721–24. http://dx.doi.org/10.3938/jkps.54.1721.

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9

Mozayyeni, Neda, Ali Morsali, Mohammad Reza Bozorgmehr, and Safar Ali Beyramabadi. "Mechanistic and energetic studies of superparamagnetic iron oxide nanoparticles as a cyclophosphamide anticancer drug nanocarrier: A quantum mechanical approach." Progress in Reaction Kinetics and Mechanism 44, no. 1 (February 2019): 92–101. http://dx.doi.org/10.1177/1468678319825689.

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Using Fe6(OH)18(H2O)6 as a ring cluster model for superparamagnetic iron oxide nanoparticles, noncovalent configurations and three mechanisms of covalent functionalization of superparamagnetic iron oxide nanoparticles with cyclophosphamide an anticancer drug were studied. Quantum molecular descriptors, solvation, and binding energies of noncovalent interactions were investigated the in gas and solution phases at the B3LYP and M06-2X density functional levels. In the vicinity of superparamagnetic iron oxide nanoparticles, the reactivity of the drug increases, showing cyclophosphamide can probably bind to superparamagnetic iron oxide nanoparticles through Cl ( k1 mechanism), P=O ( k2 mechanism), and NH in a six-membered ring ( k3 mechanism) groups. The activation parameters of all pathways were calculated, indicating the high barriers related to the k1 and k2 mechanisms are higher the barrier related to the k3 mechanism. The k3 mechanism is also spontaneous and exothermic and is therefore the preferred mechanism for covalent functionalization.

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Molina, Miguel M., Amedea B. Seabra, Marcelo G. de Oliveira, Rosangela Itri, and Paula S. Haddad. "Nitric oxide donor superparamagnetic iron oxide nanoparticles." Materials Science and Engineering: C 33, no. 2 (March 2013): 746–51. http://dx.doi.org/10.1016/j.msec.2012.10.027.

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Yang, Yiming, Xiaohui Liu, Yang Zhang, Hao Dai, Jianglun Shen, Fen Hu, Haifeng Cai, and Jinyin Yan. "Superparamagnetic Iron Oxide Nanoparticles Directed miRNA-34b-RNA-Binding Proteins T Cell to Restrict Intracellular Antigen-1-Stress Granules (TIA-1-SG) in Breast Cancer Chemotherapy." Science of Advanced Materials 13, no. 10 (October 1, 2021): 1865–71. http://dx.doi.org/10.1166/sam.2021.4100.

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miRNA-34b-T cell restricted intracellular antigen-1-stress granules (miRNA-34b-TIA-1-SG) superparamagnetic iron oxide nanoparticles were studied in this project and their directional function will provide a new carrier for improving directional improvement of interventional therapeutic drugs for breast cancer. We explored its therapeutic effect on breast cancer treatment through the following groups; Group I: blank control group (injected with 0.9% normal saline 0.5 mL to the tail vein), Group II: miRNA-34b-TIA-1-SG group (superparamagnetic iron oxide miRNA-34b-TIA-1-SG nanoparticles given by tail vein injection), Group III: superparamagnetic iron oxide-oriented miRNA-34b-TIA-1-SG group (superparamagnetic iron oxide nanoparticles given by tail vein injection). In vitro experiment involved the following methods: MTT, flow cytometry and colony formation experiment, all used to evaluate biological processes of tumor cells after tail vein injection of superparamagnetic iron oxide directed miRNA-34b-TIA-1-SG. In vivo experiments involved the following: tumor xenotransplantation experiment, used to observe the effect of tail vein injection of superparamagnetic iron oxide-oriented miRNA-34b-TIA-1-SG on the treatment effect of breast cancer. Both In vivo experiments and In vitro experiments in MDA-MB-231 cells confirmed that superparamagnetic iron oxide-oriented miRNA-34b-TIA-1-SG nanoparticles effectively inhibited breast cancer cells proliferation and colony formation, and also promoted cell apoptosis. Promotion of cell apoptosis is one of the main ways to treat breast cancer, as appearance of stress granules inhibits cell apoptosis, so regulating stress granules to promote the apoptosis of breast cancer cells is an important treatment strategy. TIA-1 is an essential component of stress granules, and miRNA-34b was significantly down-regulated in breast cancer cells. Therefore, the hypothesis that miRNA-34b-TIA-1-SG signal axis regulates cell apoptosis and promotes breast cancer cell proliferation is herein proposed. We constructed the miRNA-34b reporter gene system, and our study showed that the superparamagnetic iron oxide oriented miRNA-34b-TIA-1-SG nanoparticles may be used as a development direction for breast cancer treatment, which may provide a new and highly effective molecular-oriented drug.

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Vikram, S., R. Vasanthakumari, Takuya Tsuzuki, and Murali Rangarajan. "Hydrodynamics of Superparamagnetic Iron Oxide Nanoparticles." Materials Today: Proceedings 4, no. 9 (2017): 10524–28. http://dx.doi.org/10.1016/j.matpr.2017.06.413.

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13

Binder, Wolfgang H., and Harald C. Weinstabl. "Surface-Modified Superparamagnetic Iron-Oxide Nanoparticles." Monatshefte für Chemie - Chemical Monthly 138, no. 4 (March 28, 2007): 315–20. http://dx.doi.org/10.1007/s00706-007-0617-2.

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Żuk, Michał, Weronika Gawęda, Agnieszka Majkowska-Pilip, Magdalena Osial, Marcin Wolski, Aleksander Bilewicz, and Paweł Krysiński. "Hybrid Radiobioconjugated Superparamagnetic Iron Oxide-Based Nanoparticles for Multimodal Cancer Therapy." Pharmaceutics 13, no. 11 (November 2, 2021): 1843. http://dx.doi.org/10.3390/pharmaceutics13111843.

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Superparamagnetic iron oxide nanoparticles (SPIONs) are widely used for biomedical applications for their outstanding properties such as facile functionalization and doping with different metals, high surface-to-volume ratio, superparamagnetism, and biocompatibility. This study was designed to synthesize and investigate multifunctional nanoparticle conjugate to act as both a magnetic agent, anticancer immunological drug, and radiopharmaceutic for anticancer therapy. The carrier, 166Ho doped iron oxide, was coated with an Au layer, creating core-shell nanoparticles ([166Ho] Fe3O4@Au. These nanoparticles were subsequently modified with monoclonal antibody trastuzumab (Tmab) to target HER2+ receptors. We describe the radiobioconjugate preparation involving doping of a radioactive agent and attachment of the organic linker and drug to the SPIONs’ surface. The size of the SPIONs coated with an Au shell measured by transmission electron microscopy was about 15 nm. The bioconjugation of trastuzumab onto SPIONs was confirmed by thermogravimetric analysis, and the amount of two molecules per one nanoparticle was estimated with the use of radioiodinated [131I]Tmab. The synthesized bioconjugates showed that they are efficient heat mediators and also exhibit a cytotoxic effect toward SKOV-3 ovarian cancer cells expressing HER2 receptors. Prepared radiobioconjugates reveal the high potential for in vivo application of the proposed multimodal hybrid system, combined with magnetic hyperthermia and immunotherapy against cancer tissues.

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Nguyen, Ngoc Uyen. "PREPARATION OF MAGNETIC HYDROGEL BY IN-SITU COPRECIPITATION PROCESS." Vietnam Journal of Science and Technology 56, no. 1A (May 4, 2018): 167. http://dx.doi.org/10.15625/2525-2518/56/1a/12519.

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This study describes a preparation of magnetite nanoparticle by co-precipitation of Fe(II) and Fe(III) in alginate hydrogel matrix. This simple process is sufficient for producing a superparamagnetic, well dispersible magnetite nanoparticle in polymer hydrogel matrix. Two approaches for iron ions loadings are induced. The first approach includes two steps, the hydrogel beads are formed before the iron ions are being diffused into the hydrogel matrix. The second approach is the simultaneous forming of hydrogel containing iron ions. The ions loaded hydrogel is then coprecipitated in the presence of ammonium hydroxide to afford iron oxide magnetite nanoparticles in alginate hydrogel matrix. The composition and characteristics of the hydrogel containing magnetite nanoparticle were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and transmission electron microscopy (TEM). The results showed that the particles size of magnetic nanoparticles prepared by in-situ coprecipitation method is around ~ 6 nm and smaller than that produced by normal coprecipitation method. The magnetic hydrogel exhibits superparamagnetic properties with the saturation magnetization of about 25 emu/g, the ratio of Mr/Ms about 0.8 ×10-3. Possessing the biocompatibility as well as superparamagnetism, the magnetite hydrogel is a promising materials for environmental and biomedical applications.

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Lu, Zhaoyu, Dong Yu, Fengsong Nie, Yang Wang, and Yang Chong. "Iron Nanoparticles Open Up New Directions for Promoting Healing in Chronic Wounds in the Context of Bacterial Infection." Pharmaceutics 15, no. 9 (September 15, 2023): 2327. http://dx.doi.org/10.3390/pharmaceutics15092327.

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Metal nanoparticles play an outstanding role in the field of wound healing due to their excellent properties, and the significance of iron, one of the most widely used metals globally, cannot be overlooked. The purpose of this review is to determine the importance of iron nanoparticles in wound-healing dressings. Prolonged, poorly healing wounds may induce infections; wound infections are a major cause of chronic wound formation. The primary components of iron nanoparticles are iron oxide nanoparticles, which promote wound healing by being antibacterial, releasing metal ions, and overcoming bacterial resistance. The diameter of iron oxide nanoparticles typically ranges between 1 and 100 nm. Magnetic nanoparticles with a diameter of less than 30 nm are superparamagnetic and are referred to as superparamagnetic iron oxide nanoparticles. This subset of iron oxide nanoparticles can use an external magnetic field for novel functions such as magnetization and functionalization. Iron nanoparticles can serve clinical purposes not only to enhance wound healing through the aforementioned means but also to ameliorate anemia and glucose irregularities, capitalizing on iron’s properties. Iron nanoparticles positively impact the healing process of chronic wounds, potentially extending beyond wound management.

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Javanbakht, T., S. Laurent, D. Stanicki, and I. Salzmann. "Rheological Properties of Superparamagnetic Iron Oxide Nanoparticles." Journal of Engineering Sciences 8, no. 1 (2021): C29—C37. http://dx.doi.org/10.21272/jes.2021.8(1).c4.

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The present study focuses on the rheological properties of polyethylene glycol (PEG) modified, positively charged, and negatively charged superparamagnetic iron oxide nanoparticles (SPIONs) at different temperatures. We hypothesized that the surface properties of these nanoparticles in the water did not affect their rheological properties. These nanoparticles had not the same surface properties as SPIONs-PEG had not to charge on their surface whereas positively charged and negatively charged ones with amine and carboxyl groups as their surfaces had positive and negative surface charges, respectively. However, their rheological behaviors were not different from each other. The comparative rheological study of SPIONs revealed their pseudo-Newtonian behavior. The viscosity of SPIONs decreased with the increase in temperature. At low shear rates, the shear stress of SPIONs was independent of rate and increased with the increase of rate. Moreover, at high shear rates, the shear stress for PEG-SPIONs was more than those for positively charged and negatively charged SPIONs. These measurements also revealed that at high shear rates, the shear stress of samples decreased with the increase of temperature. The shear stress of samples decreased with the increase of shear strain and the temperature. We also observed that all the samples had the same amount of shear strain at each shear stress, which indicated the exact resistance of SPIONs to deformation. Furthermore, the shear modulus decreased with time for these nanoparticles. These results suggest that these nanoparticles are promising candidates with appropriate properties for fluid processing applications and drug vectors in biomedical applications.

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Sadjadi, M. S., A. Sharafi, and Nazanin Farhadyar. "Preparation of Surface Modified Fe₃O₄ Nanostructures via Inverse Micelle Method and Study of their Magnetic Properties for Biological Applications." Journal of Nano Research 21 (December 2012): 37–42. http://dx.doi.org/10.4028/www.scientific.net/jnanor.21.37.

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In this work, we report on the synthesis of superparamagnetic iron oxide nanoparticles at room temperature using microemulsion template phase consisting of cyclohexane, water, CTAB as cationic surfactant and butanol as a cosurfactant. Silica surface modification of the as-prepared nanoparticles was performed by adding TEOS directly to the alkaline medium. The structure, morphology, and magnetic properties of the products were characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometer (VSM) at room temperature. The results revealed formation of iron oxide nanoparticles, with an average size of 8.8-12 nm, a superparamagnetism behavior with fast response to applied magnetic fields and zero remanence and coercivity.

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Kumar, Hemant, Shwetank Shashi Pandey, Jitender Kumar, Pramod Kumar, and Balaram Pani. "Recent Designed Simple Synthesis Approaches, Surface Modification Superparamagnetic Iron Oxide Nanoparticles and Biologically Inspired Biocompatible Nanoparticles for Biomedical Applications." Research Journal of Chemistry and Environment 26, no. 12 (November 25, 2022): 154–63. http://dx.doi.org/10.25303/2612rjce1540163.

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In biomedical applications, iron oxide nanoparticles (IO NPs) offer several excellent advantages. In biological systems, iron oxide nanoparticles have a non-toxic nature. Iron oxide nanoparticles may be employed in a variety of biological applications since they have magnetic and semiconductor characteristics. In order to get over current limitations, recent research has focused on developing next-generation nanoparticle systems with enhanced surface modifications for internalization and targeting. Superparamagnetic iron oxide nanoparticles (MNPs) have a variety of biological applications, including cell separation, hyperthermia, tissue healing and magnetic resonance imaging contrast enhancement. This review clarifies how IO NPs are used in many biological applications. According to this review, iron oxide plays a positive function in biological activity because of its simplicity of synthesis, various magnetic behaviors, biocompatibility and biodegradability. When iron oxide nanoparticles are used in a biological way, their size, shape, surface modification, aggregation and electrical properties all have a unique effect. Based on this review work, the IO NPs may be specified for biocompatibility, hyperthermia, drug delivery, magnetic resonance imaging, tissue repair and magnetofection.

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Chang, Yen-Lan, Pei-Bang Liao, Ping-Han Wu, Wei-Jen Chang, Sheng-Yang Lee, and Haw-Ming Huang. "Cancer Cytotoxicity of a Hybrid Hyaluronan-Superparamagnetic Iron Oxide Nanoparticle Material: An In-Vitro Evaluation." Nanomaterials 12, no. 3 (January 31, 2022): 496. http://dx.doi.org/10.3390/nano12030496.

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While hyaluronic acid encapsulating superparamagnetic iron oxide nanoparticles have been reported to exhibit selective cytotoxicity toward cancer cells, it is unclear whether low-molecular-weight hyaluronic acid-conjugated superparamagnetic iron oxide nanoparticles also display such cytotoxicity. In this study, high-molecular-weight hyaluronic acid was irradiated with γ-ray, while Fe3O4 nanoparticles were fabricated using chemical co-precipitation. The low-molecular-weight hyaluronic acid and Fe3O4 nanoparticles were then combined according to a previous study. Size distribution, zeta potential, and the binding between hyaluronic acid and iron oxide nanoparticles were examined using dynamic light scattering and a nuclear magnetic resonance spectroscopy. The ability of the fabricated low-molecular-weight hyaluronic acid conjugated superparamagnetic iron oxide nanoparticles to target cancer cells was examined using time-of-flight secondary ion mass spectrometry and T2* weighted magnetic resonance images to compare iron signals in U87MG human glioblastoma and NIH3T3 normal fibroblast cell lines. Comparison showed that the present material could target U87MG cells at a higher rate than NIH3T3 control cells, with a viability inhibition rate of 34% observed at day two and no cytotoxicity observed in NIH3T3 normal fibroblasts during the three-day experimental period. Supported by mass spectrometry images confirming that the nanoparticles accumulated on the surface of cancer cells, the fabricated materials can reasonably be suggested as a candidate for both magnetic resonance imaging applications and as an injectable anticancer agent.

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Gogoi, Bandana, and Upamanyu Das. "Structural, Thermal, and Magnetic Characterization Analysis of Synthesized Fe<sub>3</sub>O<sub>4</sub>-Spinel Ferrite Nanoparticles." Advanced Materials Research 1176 (April 28, 2023): 79–98. http://dx.doi.org/10.4028/p-5bb090.

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Spinel ferrite nanoparticles are potential candidates for multiple biomedical applications. Spinel ferrite nanoparticles have been studied extensively for understanding physical, chemical, electro-optical as well as magnetic properties which are fascinating due to cationic distributions corresponding to tetrahedral sites and octahedral sites in a cubic phase. Biocompatibility and large magnetic moment are basic requirements in spinel ferrite nanoparticles for efficient functioning in specific application purpose. Fe3O4 (magnetite) is an important member of spinel ferrite group with high chemical stability and ferrimagetic material property at nanodimension. Superparamagnetic state and biocompatibility of magnetite (Fe3O4) spinel ferrite nanoparticle has already been proven. Spinel ferrite magnetite nanoparticles have been developed based on precipitation of iron oxide using ferric and ferrous ions at the ratio 2:1 in alkaline media at and above 100°C. The experimental parameters have been set to synthesize pure and uniformly sized magnetite nanoparticles. No other phases of iron oxides were detected other than magnetite spinel phase in the XRD result. The average crystal size has been determined from XRD peak broadening. Absorption spectra were investigated using UV-Vis Spectrometer and FTIR. Thermal and magnetic measurements were carried out Digital Scanning Calorimeter and SQUID Magnetometer. One sample of the prepared nanoparticles with polymer coating of polyvinyl alcohol has been studied for superparamagnetic nature. Superparamagnetic particles show saturation value of magnetization 51.26 emu/g at 100 K. ZFC-FC curves for two samples with polymer coating of polyvinyl alcohol and hydroxy-propyl methyl cellulose have also been studied. Keywords: Spinel Ferrite, Magnetite, Ferrimagnetism, Transition metal oxide, Superparamagnetism. Statements and declarations Competing Interests: The authors declare that there is no competing financial interest that are related directly or indirectly to the reported work in this paper. Conflict of interest: There is no conflict of interest. Acknowledgements The Authors are grateful to IISER Bhopal, CRF facility for providing instrumentation facility to characterize magnetic properties. We acknowledge thanks to Lovely Professional University for providing us necessary characterization technique for the XRD analysis and thermal analysis.

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Iyer, Shama R., Su Xu, Joseph P. Stains, Craig H. Bennett, and Richard M. Lovering. "Superparamagnetic Iron Oxide Nanoparticles in Musculoskeletal Biology." Tissue Engineering Part B: Reviews 23, no. 4 (August 2017): 373–85. http://dx.doi.org/10.1089/ten.teb.2016.0437.

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Raynal, Isabelle, Philippe Prigent, Sophie Peyramaure, Abderrahim Najid, Cécile Rebuzzi, and Claire Corot. "Macrophage Endocytosis of Superparamagnetic Iron Oxide Nanoparticles." Investigative Radiology 39, no. 1 (January 2004): 56–63. http://dx.doi.org/10.1097/01.rli.0000101027.57021.28.

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Lindemann, Antje, Ralph Pries, Kerstin Ludtke-Buzug, and Barbara Wollenberg. "Biological Properties of Superparamagnetic Iron Oxide Nanoparticles." IEEE Transactions on Magnetics 51, no. 2 (February 2015): 1–4. http://dx.doi.org/10.1109/tmag.2014.2358257.

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Kim, Do Kyung, Maria Mikhaylova, Yu Zhang, and Mamoun Muhammed. "Protective Coating of Superparamagnetic Iron Oxide Nanoparticles." Chemistry of Materials 15, no. 8 (April 2003): 1617–27. http://dx.doi.org/10.1021/cm021349j.

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Mireles, Laura-Karina, Edward Sacher, L’Hocine Yahia, Sophie Laurent, and Dimitri Stanicki. "Washing effect on superparamagnetic iron oxide nanoparticles." Data in Brief 7 (June 2016): 1296–301. http://dx.doi.org/10.1016/j.dib.2016.03.104.

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Huang, Guifang, James Diakur, Zhenghe Xu, and Leonard I. Wiebe. "Asialoglycoprotein receptor-targeted superparamagnetic iron oxide nanoparticles." International Journal of Pharmaceutics 360, no. 1-2 (August 2008): 197–203. http://dx.doi.org/10.1016/j.ijpharm.2008.04.029.

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Min Yeo, Kyung, Chun Ji Gao, Kwang-Hyun Ahn, and In Su Lee. "Superparamagnetic iron oxide nanoparticles with photoswitchable fluorescence." Chemical Communications, no. 38 (2008): 4622. http://dx.doi.org/10.1039/b807462c.

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Mahmoudi, M., A. Simchi, A. S. Milani, and P. Stroeve. "Cell toxicity of superparamagnetic iron oxide nanoparticles." Journal of Colloid and Interface Science 336, no. 2 (August 2009): 510–18. http://dx.doi.org/10.1016/j.jcis.2009.04.046.

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He, Shuai, Joseph S. DuChene, Jingjing Qiu, Alexander A. Puretzky, Zheng Gai, and Wei David Wei. "Persistent Photomagnetism in Superparamagnetic Iron Oxide Nanoparticles." Advanced Electronic Materials 4, no. 7 (May 16, 2018): 1700661. http://dx.doi.org/10.1002/aelm.201700661.

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Kim, Jihoon, Junghwan Oh, Hyun Wook Kang, Marc D. Feldman, and Thomas E. Milner. "Photothermal response of superparamagnetic iron oxide nanoparticles." Lasers in Surgery and Medicine 40, no. 6 (August 2008): 415–21. http://dx.doi.org/10.1002/lsm.20650.

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Chen, Yongpeng, Jianguo Zhang, Zhixin Wang, and Zunning Zhou. "Solvothermal Synthesis of Size-Controlled Monodispersed Superparamagnetic Iron Oxide Nanoparticles." Applied Sciences 9, no. 23 (November 28, 2019): 5157. http://dx.doi.org/10.3390/app9235157.

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Superparamagnetic iron oxide nanoparticles are of great interest in magnetic targeted drug delivery due to their unique properties. In this paper, size-controlled superparamagnetic iron oxide nanoparticles were synthesized in an ethylene glycol/diethylene glycol (EG/DEG) binary solvent system via a facile solvothermal method. X-ray diffraction (XRD), a scanning electron microscope (SEM), and a vibrating sample magnetometer (VSM) were used to confirm that the prepared samples were superparamagnetic Fe 3 O 4 nanospheres. When the V EG / V DEG was varied from 100/0 to 80/20, 60/40, and 40/60, the average diameters of the resulting Fe 3 O 4 nanospheres were approximately 700, 500, 300, and 100 nm, respectively. In addition, the saturation magnetization ( M s ) of Fe 3 O 4 nanoparticles with a size of 100, 300, 500, and 700 nm was 72.14, 75.94, 80.28, and 85.41 emu/g, and the corresponding remanent magnetization ( M r ) was 3.34, 3.97, 3.26, and 4.28 emu/g, respectively. The relevant formation mechanisms of Fe 3 O 4 nanoparticles are proposed at the end. These superparamagnetic Fe 3 O 4 nanoparticles with high saturation magnetization may have use as targeted drug carriers.

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Salunkhe, A. B., V. M. Khot, J. M. Ruso, and S. I. Patil. "Synthesis and magnetostructural studies of amine functionalized superparamagnetic iron oxide nanoparticles." RSC Advances 5, no. 24 (2015): 18420–28. http://dx.doi.org/10.1039/c5ra00049a.

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Superparamagnetic iron oxide nanoparticles are synthesized through the co precipitation method by using the new generation base diisopropylamine (DIPA) which electrostatically complexes with the iron ions, reduces them and subsequently caps the nanoparticles.

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Song, Zhenhuan, Ting Liu, and Tianfeng Chen. "Overcoming blood–brain barrier by HER2-targeted nanosystem to suppress glioblastoma cell migration, invasion and tumor growth." Journal of Materials Chemistry B 6, no. 4 (2018): 568–79. http://dx.doi.org/10.1039/c7tb02677c.

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Herein we synthesize an HER2 antibody-conjugated selenium nanoparticle platform can efficiently deliver both therapeutic agents and diagnostic agents (superparamagnetic iron oxide nanoparticles) across the BBB into the tumor tissues and enhances their effects on brain tumor treatment and MR imaging.

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Hachtel, J. A., S. Yu, A. R. Lupini, S. T. Pantelides, M. Gich, A. Laromaine, and A. Roig. "Gold nanotriangles decorated with superparamagnetic iron oxide nanoparticles: a compositional and microstructural study." Faraday Discussions 191 (2016): 215–27. http://dx.doi.org/10.1039/c6fd00028b.

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The combination of iron oxide and gold in a single nanoparticle results in both magnetic and plasmonic properties that can stimulate novel applications in bio-sensing, medical imaging, or therapeutics. Microwave assisted heating allows the fabrication of multi-component, multi-functional nanostructures by promoting selective heating at desired sites. Recently, we reported a microwave-assisted polyol route yielding gold nanotriangles decorated with iron oxide nanoparticles. Here, we present an in-depth microstructural and compositional characterization of the system using scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS). A method to remove the iron oxide nanoparticles from the gold nanocrystals and some insights on crystal nucleation and growth mechanisms are also provided.

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Yang, Shu-Jyuan, Shu-Yi Tseng, Chung-Hao Wang, Tai-Horng Young, Ke-Cheng Chen, and Ming-Jium Shieh. "Magnetic nanomedicine for CD133-expressing cancer therapy using locoregional hyperthermia combined with chemotherapy." Nanomedicine 15, no. 26 (November 2020): 2543–61. http://dx.doi.org/10.2217/nnm-2020-0222.

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Aim: Cells with CD133 overexpression, a theoretical cancer stem cells (CSCs) marker, have been shown to induce colorectal cancer (CRC) initiation and relapse. Therefore, the detection and treatment of CSCs are the most important factors in overcoming CRC. Materials & methods: Herein, we developed a magnetite-based nanomedicine (superparamagnetic iron oxide@poly(sodium styrene sulfonate)/irinotecan/human serum albumin-anti-CD133 nanoparticle) using loco-regional hyperthermia combined with chemotherapy for CRC- and CSC-specific targeting treatment. Results: The designed nanoparticles were highly biocompatible and exhibited a higher temperature increase rate under radiofrequency generator irradiation. The nanoparticles could be used as a T2-weighted magnetic resonance imaging contrast media, and also applied during hyperthermia and chemotherapy to display a synergistic anticancer effect. Conclusion: Therefore, the superparamagnetic iron oxide@poly(sodium styrene sulfonate)/irinotecan/human serum albumin-anti-CD133 nanoparticles are a powerful candidate for future antitumor strategies.

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Mohd Zobir, Hussein, Samuri Nor Suzariana, and Shaari Abdul Halim. "The Effect of Synthesis Method on the Physico-Chemical Properties of Magnetite Iron Oxide Nanoparticles." Advanced Materials Research 701 (May 2013): 212–16. http://dx.doi.org/10.4028/www.scientific.net/amr.701.212.

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Superparamagnetic iron oxide nanoparticles were synthesized using co-precipitation, hydrothermal and ultrasonic routes from Fe2+/Fe3+ions and NaOH. The average diameter for the sample prepared using co-precipitation, hydrothermal and ultrasonic method is 33, 9 and 30 nm, respectively with surface area of 85, 117 and 87 m2/g, respectively. Although the results showed all the magnetite nanoparticles were superparamagnetic, but their saturation magnetization and coercitivity are different, depending on the method of synthesis. This study shows that method of synthesis is important that influence the physico-chemical properties of the resulting magnetite iron oxide nanoparticles.

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Pachla, Anna, Zofia Lendzion-Bieluń, Dariusz Moszyński, Agata Markowska-Szczupak, Urszula Narkiewicz, Rafał J. Wróbel, Niko Guskos, and Grzegorz Żołnierkiewicz. "Synthesis and antibacterial properties of Fe3O4-Ag nanostructures." Polish Journal of Chemical Technology 18, no. 4 (December 1, 2016): 110–16. http://dx.doi.org/10.1515/pjct-2016-0079.

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Abstract Superparamagnetic iron oxide nanoparticles were obtained in the polyethylene glycol environment. An effect of precipitation and drying temperatures on the size of the prepared nanoparticles was observed. Superparamagnetic iron oxide Fe3O4, around of 15 nm, was obtained at a precipitation temperature of 80°C and a drying temperature of 60°C. The presence of functional groups characteristic for a polyethylene glycol surfactant on the surface of nanoparticles was confirmed by FTIR and XPS measurements. Silver nanoparticles were introduced by the impregnation. Fe3O4-Ag nanostructure with bactericidal properties against Escherichia coli species was produced. Interesting magnetic properties of these materials may be helpful to separate the bactericidal agent from the solution.

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Dolci, Sara, Valentina Domenici, Gianpaolo Vidili, Marco Orecchioni, Pasquale Bandiera, Roberto Madeddu, Cristiano Farace, et al. "Immune compatible cystine-functionalized superparamagnetic iron oxide nanoparticles as vascular contrast agents in ultrasonography." RSC Advances 6, no. 4 (2016): 2712–23. http://dx.doi.org/10.1039/c5ra19652c.

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Baghdadi, Neazar E., Benjamin P. Burke, Tahani Alresheedi, Shubhanchi Nigam, Abdu Saeed, Farooq Almutairi, Juozas Domarkas, Abid Khan, and Stephen J. Archibald. "Multivalency in CXCR4 chemokine receptor targeted iron oxide nanoparticles." Dalton Transactions 50, no. 5 (2021): 1599–603. http://dx.doi.org/10.1039/d0dt02626c.

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Massironi, Nicolò, Miriam Colombo, Cesare Cosentino, Luisa Fiandra, Michele Mauri, Yasmina Kayal, Filippo Testa, et al. "Heparin–Superparamagnetic Iron Oxide Nanoparticles for Theranostic Applications." Molecules 27, no. 20 (October 21, 2022): 7116. http://dx.doi.org/10.3390/molecules27207116.

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In this study, superparamagnetic iron oxide nanoparticles (SPIONs) were engineered with an organic coating composed of low molecular weight heparin (LMWH) and bovine serum albumin (BSA), providing heparin-based nanoparticle systems (LMWH@SPIONs). The purpose was to merge the properties of the heparin skeleton and an inorganic core to build up a targeted theranostic nanosystem, which was eventually enhanced by loading a chemotherapeutic agent. Iron oxide cores were prepared via the co-precipitation of iron salts in an alkaline environment and oleic acid (OA) capping. Dopamine (DA) was covalently linked to BSA and LMWH by amide linkages via carbodiimide coupling. The following ligand exchange reaction between the DA-BSA/DA-LMWH and OA was conducted in a biphasic system composed of water and hexane, affording LMWH@SPIONs stabilized in water by polystyrene sulfonate (PSS). Their size and morphology were investigated via dynamic light scattering (DLS) and transmission electron microscopy (TEM), respectively. The LMWH@SPIONs’ cytotoxicity was tested, showing marginal or no toxicity for samples prepared with PSS at concentrations of 50 µg/mL. Their inhibitory activity on the heparanase enzyme was measured, showing an effective inhibition at concentrations comparable to G4000 (N-desulfo-N-acetyl heparin, a non-anticoagulant and antiheparanase heparin derivative; Roneparstat). The LMWH@SPION encapsulation of paclitaxel (PTX) enhanced the antitumor effect of this chemotherapeutic on breast cancer cells, likely due to an improved internalization of the nanoformulated drug with respect to the free molecule. Lastly, time-domain NMR (TD-NMR) experiments were conducted on LMWH@SPIONs obtaining relaxivity values within the same order of magnitude as currently used commercial contrast agents.

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Strączek, Tomasz, Sylwia Fiejdasz, Damian Rybicki, Kamil Goc, Janusz Przewoźnik, Weronika Mazur, Maria Nowakowska, Szczepan Zapotoczny, Stanisław Rumian, and Czesław Kapusta. "Dynamics of Superparamagnetic Iron Oxide Nanoparticles with Various Polymeric Coatings." Materials 12, no. 11 (June 3, 2019): 1793. http://dx.doi.org/10.3390/ma12111793.

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In this article, the results of a study of the magnetic dynamics of superparamagnetic iron oxide nanoparticles (SPIONs) with chitosan and polyethylene glycol (PEG) coatings are reported. The materials were prepared by the co-precipitation method and characterized by X-ray diffraction, dynamic light scattering and scanning transmission electron microscopy. It was shown that the cores contain maghemite, and their hydrodynamic diameters vary from 49 nm for PEG-coated to 200 nm for chitosan-coated particles. The magnetic dynamics of the nanoparticles in terms of the function of temperature was studied with magnetic susceptometry and Mössbauer spectroscopy. Their superparamagnetic fluctuations frequencies, determined from the fits of Mössbauer spectra, range from tens to hundreds of megahertz at room temperature and mostly decrease in the applied magnetic field. For water suspensions of nanoparticles, maxima are observed in the absorption part of magnetic susceptibility and they shift to higher temperatures with increasing excitation frequency. A step-like decrease of the susceptibility occurs at freezing, and from that, the Brown’s and Néel’s contributions are extracted and compared for nanoparticles differing in core sizes and types of coating. The results are analyzed and discussed with respect to the tailoring of the dynamic properties of these nanoparticle materials for requirements related to the characteristic frequency ranges of MRI and electromagnetic field hyperthermia.

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Bonvin, Debora, Diego Chiappe, Marc Moniatte, Heinrich Hofmann, and Marijana Mionić Ebersold. "Methods of protein corona isolation for magnetic nanoparticles." Analyst 142, no. 20 (2017): 3805–15. http://dx.doi.org/10.1039/c7an00646b.

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44

Rui, Yuan-Peng, Bo Liang, Fenglin Hu, Jie Xu, Yi-Feng Peng, Pei-Hao Yin, Yourong Duan, Chunfu Zhang, and Hongchen Gu. "Ultra-large-scale production of ultrasmall superparamagnetic iron oxide nanoparticles for T1-weighted MRI." RSC Advances 6, no. 27 (2016): 22575–85. http://dx.doi.org/10.1039/c6ra00347h.

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Luchini, Alessandra, Carlo Irace, Rita Santamaria, Daniela Montesarchio, Richard K. Heenan, Noemi Szekely, Alessandra Flori, Luca Menichetti, and Luigi Paduano. "Phosphocholine-decorated superparamagnetic iron oxide nanoparticles: defining the structure and probing in vivo applications." Nanoscale 8, no. 19 (2016): 10078–86. http://dx.doi.org/10.1039/c5nr08486e.

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Teeman, Eric, Carolyn Shasha, James E. Evans, and Kannan M. Krishnan. "Intracellular dynamics of superparamagnetic iron oxide nanoparticles for magnetic particle imaging." Nanoscale 11, no. 16 (2019): 7771–80. http://dx.doi.org/10.1039/c9nr01395d.

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Luchini, Alessandra, Richard K. Heenan, Luigi Paduano, and Giuseppe Vitiello. "Functionalized SPIONs: the surfactant nature modulates the self-assembly and cluster formation." Physical Chemistry Chemical Physics 18, no. 27 (2016): 18441–49. http://dx.doi.org/10.1039/c6cp01694d.

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Kim, Hoonsub, Pyung Won Im, Chaedong Lee, Hwichan Hong, Wooseung Lee, Changhyuk Koo, Sang Yoon Park, Hyung-Jun Im, Sun Ha Paek, and Yuanzhe Piao. "In vitro magnetic hyperthermia properties of angle-shaped superparamagnetic iron oxide nanoparticles synthesized by a bromide-assisted polyol method." RSC Advances 13, no. 5 (2023): 2803–10. http://dx.doi.org/10.1039/d2ra07190h.

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Sánchez-Cabezas, Santiago, Roberto Montes-Robles, Juan Gallo, Félix Sancenón, and Ramón Martínez-Máñez. "Combining magnetic hyperthermia and dual T1/T2 MR imaging using highly versatile iron oxide nanoparticles." Dalton Transactions 48, no. 12 (2019): 3883–92. http://dx.doi.org/10.1039/c8dt04685a.

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Weyell, P., H. D. Kurland, T. Hülser, J. Grabow, F. A. Müller, and D. Kralisch. "Risk and life cycle assessment of nanoparticles for medical applications prepared using safe- and benign-by-design gas-phase syntheses." Green Chemistry 22, no. 3 (2020): 814–27. http://dx.doi.org/10.1039/c9gc02436k.

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Laser vaporisation is a promising technology for the industrial manufacturing of spherical, oxidic nanoparticles, including crystalline, less-agglomerated ferromagnetic maghemite and superparamagnetic silica coated iron oxide composite nanoparticles.

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