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Góral D, Marczuk A, Góral-Kowalczyk M, Koval I, Andrejko D. Application of Iron Nanoparticle-Based Materials in the Food Industry. MATERIALS (BASEL, SWITZERLAND) 2023; 16:780. [PMID: 36676517 PMCID: PMC9862918 DOI: 10.3390/ma16020780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Due to their different properties compared to other materials, nanoparticles of iron and iron oxides are increasingly used in the food industry. Food technologists have especially paid attention to their ease of separation by magnetic fields and biocompatibility. Unfortunately, the consumption of increasing amounts of nanoparticles has raised concerns about their biotoxicity. Hence, knowledge about the applicability of iron nanoparticle-based materials in the food industry is needed not only among scientists, but also among all individuals who are involved in food production. The first part of this article describes typical methods of obtaining iron nanoparticles using chemical synthesis and so-called green chemistry. The second part of this article describes the use of iron nanoparticles and iron nanoparticle-based materials for active packaging, including the ability to eliminate oxygen and antimicrobial activity. Then, the possibilities of using the magnetic properties of iron nano-oxides for enzyme immobilization, food analysis, protein purification and mycotoxin and histamine removal from food are described. Other described applications of materials based on iron nanoparticles are the production of artificial enzymes, process control, food fortification and preserving food in a supercooled state. The third part of the article analyzes the biocompatibility of iron nanoparticles, their impact on the human body and the safety of their use.
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Affiliation(s)
- Dariusz Góral
- Department of Biological Bases of Food and Feed Technologies, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-612 Lublin, Poland
| | - Andrzej Marczuk
- Department of Agricultural Forestry and Transport Machines, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-950 Lublin, Poland
| | - Małgorzata Góral-Kowalczyk
- Department of Agricultural Forestry and Transport Machines, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-950 Lublin, Poland
| | - Iryna Koval
- Department of Physical, Analytical and General Chemistry, Lviv Polytechnic National University, 79013 Lviv, Ukraine
| | - Dariusz Andrejko
- Department of Biological Bases of Food and Feed Technologies, Faculty of Production Engineering, University of Life Sciences in Lublin, 20-612 Lublin, Poland
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Magnetic Iron Nanoparticles: Synthesis, Surface Enhancements, and Biological Challenges. Processes (Basel) 2022. [DOI: 10.3390/pr10112282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This review focuses on the role of magnetic nanoparticles (MNPs), their physicochemical properties, their potential applications, and their association with the consequent toxicological effects in complex biologic systems. These MNPs have generated an accelerated development and research movement in the last two decades. They are solving a large portion of problems in several industries, including cosmetics, pharmaceuticals, diagnostics, water remediation, photoelectronics, and information storage, to name a few. As a result, more MNPs are put into contact with biological organisms, including humans, via interacting with their cellular structures. This situation will require a deeper understanding of these particles’ full impact in interacting with complex biological systems, and even though extensive studies have been carried out on different biological systems discussing toxicology aspects of MNP systems used in biomedical applications, they give mixed and inconclusive results. Chemical agencies, such as the Registration, Evaluation, Authorization, and Restriction of Chemical substances (REACH) legislation for registration, evaluation, and authorization of substances and materials from the European Chemical Agency (ECHA), have held meetings to discuss the issue. However, nanomaterials (NMs) are being categorized by composition alone, ignoring the physicochemical properties and possible risks that their size, stability, crystallinity, and morphology could bring to health. Although several initiatives are being discussed around the world for the correct management and disposal of these materials, thanks to the extensive work of researchers everywhere addressing the issue of related biological impacts and concerns, and a new nanoethics and nanosafety branch to help clarify and bring together information about the impact of nanoparticles, more questions than answers have arisen regarding the behavior of MNPs with a wide range of effects in the same tissue. The generation of a consolidative framework of these biological behaviors is necessary to allow future applications to be manageable.
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Akintelu SA, Olabemiwo OM, Ibrahim AO, Oyebamiji JO, Oyebamiji AK, Olugbeko SC. Biosynthesized nanoparticles as a rescue aid for agricultural sustainability and development. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00382-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Porous defective carbon ferrite for adsorption and photocatalysis toward nitrogen compounds in pre-treated biogas slurry. Sci Rep 2022; 12:10789. [PMID: 35750713 PMCID: PMC9232536 DOI: 10.1038/s41598-022-14772-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/13/2022] [Indexed: 11/17/2022] Open
Abstract
Carbon ferrite (C-Fe3O4) with hydrophilic functional groups and lattice defects was synthesized in anhydrous molten alkali system by fern leaves and ferric chloride as raw materials. Structural characterization results showed that carbon ferrite obtained oxygen-containing groups on the carbon surface. And structural pores and lattice defects resulted from spontaneous accumulation and “directive-connection” of ferrite (Fe3O4) nanoparticles. Carbon ferrite displayed an adsorption efficiency of 29.0% and excellent photocatalytic degradation of 80.8% toward nitrogen compounds (initial concentration of 430 mg/L) in pre-treated biogas slurry. The micromechanism for nitrogen compounds removal was discussed at the molecular/atomic level by exploring carbon ferrite “structure-activity”, which provides a design idea from microscopic perspective for the preparation of environmental materials with reactive sites.
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Chircov C, Matei MF, Neacșu IA, Vasile BS, Oprea OC, Croitoru AM, Trușcă RD, Andronescu E, Sorescu I, Bărbuceanu F. Iron Oxide-Silica Core-Shell Nanoparticles Functionalized with Essential Oils for Antimicrobial Therapies. Antibiotics (Basel) 2021; 10:1138. [PMID: 34572720 PMCID: PMC8467872 DOI: 10.3390/antibiotics10091138] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 12/26/2022] Open
Abstract
Recent years have witnessed a tremendous interest in the use of essential oils in biomedical applications due to their intrinsic antimicrobial, antioxidant, and anticancer properties. However, their low aqueous solubility and high volatility compromise their maximum potential, thus requiring the development of efficient supports for their delivery. Hence, this manuscript focuses on developing nanostructured systems based on Fe3O4@SiO2 core-shell nanoparticles and three different types of essential oils, i.e., thyme, rosemary, and basil, to overcome these limitations. Specifically, this work represents a comparative study between co-precipitation and microwave-assisted hydrothermal methods for the synthesis of Fe3O4@SiO2 core-shell nanoparticles. All magnetic samples were characterized by X-ray diffraction (XRD), gas chromatography-mass spectrometry (GC-MS), Fourier-transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), zeta potential, scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetry and differential scanning calorimetry (TG-DSC), and vibrating sample magnetometry (VSM) to study the impact of the synthesis method on the nanoparticle formation and properties, in terms of crystallinity, purity, size, morphology, stability, and magnetization. Moreover, the antimicrobial properties of the synthesized nanocomposites were assessed through in vitro tests on Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans. In this manner, this study demonstrated the efficiency of the core-shell nanostructured systems as potential applications in antimicrobial therapies.
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Affiliation(s)
- Cristina Chircov
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.C.); (I.A.N.); (B.S.V.); (A.-M.C.)
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania;
| | - Maria-Florentina Matei
- Faculty of Medical Engineering, University Politehnica of Bucharest, 011061 Bucharest, Romania;
| | - Ionela Andreea Neacșu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.C.); (I.A.N.); (B.S.V.); (A.-M.C.)
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania;
| | - Bogdan Stefan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.C.); (I.A.N.); (B.S.V.); (A.-M.C.)
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania;
| | - Ovidiu-Cristian Oprea
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, University Politehnica of Bucharest, 1-7 Polizu St., 011061 Bucharest, Romania;
| | - Alexa-Maria Croitoru
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.C.); (I.A.N.); (B.S.V.); (A.-M.C.)
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania;
| | - Roxana-Doina Trușcă
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania;
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (C.C.); (I.A.N.); (B.S.V.); (A.-M.C.)
- National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania;
- Academy of Romanian Scientists, 54 Spl. Independentei, 050045 Bucharest, Romania
| | - Ionuț Sorescu
- Institute for Diagnosis and Animal Health, 050557 Bucharest, Romania; (I.S.); (F.B.)
| | - Florica Bărbuceanu
- Institute for Diagnosis and Animal Health, 050557 Bucharest, Romania; (I.S.); (F.B.)
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, 105 Splaiul Independentei, 050097 Bucharest, Romania
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Joshi B, Joshi A. Polymeric magnetic nanoparticles: a multitargeting approach for brain tumour therapy and imaging. Drug Deliv Transl Res 2021; 12:1588-1604. [PMID: 34537930 DOI: 10.1007/s13346-021-01063-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2021] [Indexed: 11/29/2022]
Abstract
The most challenging task in targeting the brain is trespassing the blood-brain barrier (BBB) which restricts the movement of about 98% small molecules. Targeting the central nervous system using magnetic nanoparticles may deliver the drug to the target site along with a contrast imaging property. The use of magnetic nanoparticles can become non-invasive drug targeting and a bio-imaging method for brain cancer. The strategy to apply polymeric nanoparticles as a carrier of magnetic iron oxide nanoparticles can be a promising tool as a multitherapeutic drug delivery approach involving delivery of chemotherapeutic drugs with a magnetic targeting approach, imaging, and hyperthermia. This review will highlight the existing difficulties/barriers in crossing the BBB, types of magnetic materials, polymeric carriers for functionalization of magnetic nanoparticles, and targeting strategies as therapeutic and imaging modalities. Utilization of polymeric magnetic nanoparticles as an efficient targeting platform for better drug delivery and imaging for brain cancer and future prospects are also discussed. Polymeric magnetic nanoparticles as a drug delivery and bio-imaging vehicle for brain cancer.
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Affiliation(s)
- Bhavana Joshi
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Room No. POD1A-710, Khandwa Road, Simrol campus, 453552, Madhya Pradesh, India
| | - Abhijeet Joshi
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Room No. POD1A-710, Khandwa Road, Simrol campus, 453552, Madhya Pradesh, India.
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Batool N, Yoon S, Imdad S, Kong M, Kim H, Ryu S, Lee JH, Chaurasia AK, Kim KK. An Antibacterial Nanorobotic Approach for the Specific Targeting and Removal of Multiple Drug-Resistant Staphylococcus aureus. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100257. [PMID: 33838013 DOI: 10.1002/smll.202100257] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/06/2021] [Indexed: 06/12/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) causes diseases ranging from skin infections to lethal sepsis and has become a serious threat to human health due to multiple-drug resistance (MDR). Therefore, a resistance-free antibacterial therapy is necessary to overcome MDR MRSA infections. In this study, an antibacterial nanorobot (Ab-nanobot) is developed wherein a cell wall-binding domain (CBD)-endolysin, acting as a sensor, is covalently conjugated with an actuator consisting of an iron oxide/silica core-shell. The CBD-endolysin sensor shows an excellent specificity to detect, bind, and accumulate on the S. aureus USA300 cell surface even in a bacterial consortium, and in host cell infections. Ab-nanobot specifically captures and kills MRSA in response to medically approved radiofrequency (RF) electromagnetic stimulation (EMS) signal. When Ab-nanobot receives the RF-EMS signal on the cell surface, actuator induces cell death in MRSA with 99.999% removal within 20 min by cell-wall damage via generation of localized heat and reactive oxygen species. The in vivo efficacy of Ab-nanobot is proven using a mice subcutaneous skin infection model. Collectively, this study offers a nanomedical resistance-free strategy to overcome MDR MRSA infections by providing a highly specific nanorobot for S. aureus.
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Affiliation(s)
- Nayab Batool
- Department of Precision Medicine, Institute for Antimicrobial Resistance Research and Therapeutics, Graduate School of Basic Medical Sciences (GSBMS), Sungkyunkwan University School of Medicine, Suwon, 16419, South Korea
- Institute of Microbiology, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Seokyoung Yoon
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Saba Imdad
- Department of Precision Medicine, Institute for Antimicrobial Resistance Research and Therapeutics, Graduate School of Basic Medical Sciences (GSBMS), Sungkyunkwan University School of Medicine, Suwon, 16419, South Korea
| | - Minsuk Kong
- Department of Food Science and Technology, Seoul National University of Science and Technology, Seoul, 01811, South Korea
| | - Hun Kim
- Department of Precision Medicine, Institute for Antimicrobial Resistance Research and Therapeutics, Graduate School of Basic Medical Sciences (GSBMS), Sungkyunkwan University School of Medicine, Suwon, 16419, South Korea
| | - Sangryeol Ryu
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, South Korea
| | - Jung Heon Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Akhilesh Kumar Chaurasia
- Department of Precision Medicine, Institute for Antimicrobial Resistance Research and Therapeutics, Graduate School of Basic Medical Sciences (GSBMS), Sungkyunkwan University School of Medicine, Suwon, 16419, South Korea
| | - Kyeong Kyu Kim
- Department of Precision Medicine, Institute for Antimicrobial Resistance Research and Therapeutics, Graduate School of Basic Medical Sciences (GSBMS), Sungkyunkwan University School of Medicine, Suwon, 16419, South Korea
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Popescu RC, Andronescu E, Vasile BS. Recent Advances in Magnetite Nanoparticle Functionalization for Nanomedicine. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1791. [PMID: 31888236 PMCID: PMC6956201 DOI: 10.3390/nano9121791] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/22/2019] [Accepted: 12/11/2019] [Indexed: 02/07/2023]
Abstract
Functionalization of nanomaterials can enhance and modulate their properties and behaviour, enabling characteristics suitable for medical applications. Magnetite (Fe3O4) nanoparticles are one of the most popular types of nanomaterials used in this field, and many technologies being already translated in clinical practice. This article makes a summary of the surface modification and functionalization approaches presented lately in the scientific literature for improving or modulating magnetite nanoparticles for their applications in nanomedicine.
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Affiliation(s)
- Roxana Cristina Popescu
- National Research Center for Micro and Nanomaterials, Department of Science and Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 060042 Bucharest, Romania; (R.C.P.); (E.A.)
- Department of Life and Environmental Physics, “Horia Hulubei” National Institute for Physics and Nuclear Engineering, 077125 Magurele, Romania
| | - Ecaterina Andronescu
- National Research Center for Micro and Nanomaterials, Department of Science and Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 060042 Bucharest, Romania; (R.C.P.); (E.A.)
| | - Bogdan Stefan Vasile
- National Research Center for Micro and Nanomaterials, Department of Science and Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 060042 Bucharest, Romania; (R.C.P.); (E.A.)
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Ansari SAMK, Ficiarà E, Ruffinatti FA, Stura I, Argenziano M, Abollino O, Cavalli R, Guiot C, D'Agata F. Magnetic Iron Oxide Nanoparticles: Synthesis, Characterization and Functionalization for Biomedical Applications in the Central Nervous System. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E465. [PMID: 30717431 PMCID: PMC6384775 DOI: 10.3390/ma12030465] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 01/18/2019] [Accepted: 01/29/2019] [Indexed: 12/14/2022]
Abstract
Magnetic Nanoparticles (MNPs) are of great interest in biomedicine, due to their wide range of applications. During recent years, one of the most challenging goals is the development of new strategies to finely tune the unique properties of MNPs, in order to improve their effectiveness in the biomedical field. This review provides an up-to-date overview of the methods of synthesis and functionalization of MNPs focusing on Iron Oxide Nanoparticles (IONPs). Firstly, synthesis strategies for fabricating IONPs of different composition, sizes, shapes, and structures are outlined. We describe the close link between physicochemical properties and magnetic characterization, essential to developing innovative and powerful magnetic-driven nanocarriers. In conclusion, we provide a complete background of IONPs functionalization, safety, and applications for the treatment of Central Nervous System disorders.
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Affiliation(s)
| | - Eleonora Ficiarà
- Department of Neuroscience, University of Turin, 10124 Turin, Italy.
| | | | - Ilaria Stura
- Department of Public Health and Pediatrics, University of Turin, 10124 Turin, Italy.
| | - Monica Argenziano
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy.
| | - Ornella Abollino
- Department of Chemistry, University of Turin, 10124 Turin, Italy.
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy.
| | - Caterina Guiot
- Department of Neuroscience, University of Turin, 10124 Turin, Italy.
| | - Federico D'Agata
- Department of Neuroscience, University of Turin, 10124 Turin, Italy.
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Abstract
Magnetic iron oxide nanoparticles (MIONs) have attracted enormous attention due to their wide applications, including for magnetic separation, for magnetic hyperthermia, and as contrast agents for magnetic resonance imaging (MRI). This review article introduces the methods of synthesizing MIONs, and their application as MRI contrast agents. Currently, many methods have been reported for the synthesis of MIONs. Herein, we only focus on the liquid-based synthesis methods including aqueous phase methods and organic phase methods. In addition, the MIONs larger than 10 nm can be used as negative contrast agents and the recently emerged extremely small MIONs (ES-MIONs) smaller than 5 nm are potential positive contrast agents. In this review, we focus on the ES-MIONs because ES-MIONs avoid the disadvantages of MION-based T2- and gadolinium chelate-based T1-weighted contrast agents.
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Affiliation(s)
- Zheyu Shen
- Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo, Zhejiang 315201, P. R. China.,Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health , Bethesda, Maryland 20892, United States
| | - Aiguo Wu
- Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo, Zhejiang 315201, P. R. China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health , Bethesda, Maryland 20892, United States
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Stigliano RV, Shubitidze F, Petryk JD, Shoshiashvili L, Petryk AA, Hoopes PJ. Mitigation of eddy current heating during magnetic nanoparticle hyperthermia therapy. Int J Hyperthermia 2016; 32:735-48. [PMID: 27436449 DOI: 10.1080/02656736.2016.1195018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND Magnetic nanoparticle hyperthermia therapy is a promising technology for cancer treatment, involving delivering magnetic nanoparticles (MNPs) into tumours then activating them using an alternating magnetic field (AMF). The system produces not only a magnetic field, but also an electric field which penetrates normal tissue and induces eddy currents, resulting in unwanted heating of normal tissues. Magnitude of the eddy current depends, in part, on the AMF source and the size of the tissue exposed to the field. The majority of in vivo MNP hyperthermia therapy studies have been performed in small animals, which, due to the spatial distribution of the AMF relative to the size of the animals, do not reveal the potential toxicity of eddy current heating in larger tissues. This has posed a non-trivial challenge for researchers attempting to scale up to clinically relevant volumes of tissue. There is a relative dearth of studies focused on decreasing the maximum temperature resulting from eddy current heating to increase therapeutic ratio. METHODS This paper presents two simple, clinically applicable techniques for decreasing maximum temperature induced by eddy currents. Computational and experimental results are presented to understand the underlying physics of eddy currents induced in conducting, biological tissues and leverage these insights to mitigate eddy current heating during MNP hyperthermia therapy. RESULTS Phantom studies show that the displacement and motion techniques reduce maximum temperature due to eddy currents by 74% and 19% in simulation, and by 77% and 33% experimentally. CONCLUSION Further study is required to optimise these methods for particular scenarios; however, these results suggest larger volumes of tissue could be treated, and/or higher field strengths and frequencies could be used to attain increased MNP heating when these eddy current mitigation techniques are employed.
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Affiliation(s)
- Robert V Stigliano
- a Thayer School of Engineering at Dartmouth College , Hanover , New Hampshire
| | - Fridon Shubitidze
- a Thayer School of Engineering at Dartmouth College , Hanover , New Hampshire
| | - James D Petryk
- b Geisel School of Medicine at Dartmouth College , Hanover , New Hampshire
| | - Levan Shoshiashvili
- c Department of Electronics and Electrical Engineering, Faculty of Natural Sciences , Ivane Javakhishvili Tbilisi State University , Tbilisi , Georgia
| | - Alicia A Petryk
- b Geisel School of Medicine at Dartmouth College , Hanover , New Hampshire
| | - P Jack Hoopes
- a Thayer School of Engineering at Dartmouth College , Hanover , New Hampshire ;,b Geisel School of Medicine at Dartmouth College , Hanover , New Hampshire
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Shubitidze F, Kekalo K, Stigliano R, Baker I. Magnetic nanoparticles with high specific absorption rate of electromagnetic energy at low field strength for hyperthermia therapy. JOURNAL OF APPLIED PHYSICS 2015; 117:094302. [PMID: 25825545 PMCID: PMC4352167 DOI: 10.1063/1.4907915] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 01/30/2015] [Indexed: 05/18/2023]
Abstract
Magnetic nanoparticles (MNPs), referred to as the Dartmouth MNPs, which exhibit high specific absorption rate at low applied field strength have been developed for hyperthermia therapy applications. The MNPs consist of small (2-5 nm) single crystals of gamma-Fe2O3 with saccharide chains implanted in their crystalline structure, forming 20-40 nm flower-like aggregates with a hydrodynamic diameter of 110-120 nm. The MNPs form stable (>12 months) colloidal solutions in water and exhibit no hysteresis under an applied quasistatic magnetic field, and produce a significant amount of heat at field strengths as low as 100 Oe at 99-164 kHz. The MNP heating mechanisms under an alternating magnetic field (AMF) are discussed and analyzed quantitatively based on (a) the calculated multi-scale MNP interactions obtained using a three dimensional numerical model called the method of auxiliary sources, (b) measured MNP frequency spectra, and (c) quantified MNP friction losses based on magneto-viscous theory. The frequency responses and hysteresis curves of the Dartmouth MNPs are measured and compared to the modeled data. The specific absorption rate of the particles is measured at various AMF strengths and frequencies, and compared to commercially available MNPs. The comparisons demonstrate the superior heating properties of the Dartmouth MNPs at low field strengths (<250 Oe). This may extend MNP hyperthermia therapy to deeper tumors that were previously non-viable targets, potentially enabling the treatment of some of the most difficult cancers, such as pancreatic and rectal cancers, without damaging normal tissue.
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Affiliation(s)
- Fridon Shubitidze
- Thayer School of Engineering at Dartmouth College , 14 Engineering Drive, Hanover, New Hampshire 03755, USA
| | - Katsiaryna Kekalo
- Thayer School of Engineering at Dartmouth College , 14 Engineering Drive, Hanover, New Hampshire 03755, USA
| | - Robert Stigliano
- Thayer School of Engineering at Dartmouth College , 14 Engineering Drive, Hanover, New Hampshire 03755, USA
| | - Ian Baker
- Thayer School of Engineering at Dartmouth College , 14 Engineering Drive, Hanover, New Hampshire 03755, USA
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