scholarly journals One-step synthesis of polyethyleneimine-coated magnetite nanoparticles and their structural, magnetic and power absorption study

RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41807-41815
Author(s):  
Lizbet León Félix ◽  
Marco Antonio Rodriguez Martínez ◽  
David Gregorio Pacheco Salazar ◽  
José Antonio Huamani Coaquira
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetite Nanoparticles ◽  
Biomedical Applications ◽  
Cancer Imaging ◽  
Absorption Study ◽  
Power Absorption ◽  
Chemical Surface ◽  
One Step

Magnetic nanoparticles (NPs) are especially interesting for several biomedical applications due to their chemical surface, especially for targeted cancer imaging and therapeutics.

scholarly journals Development of Antibody-Coated Magnetite Nanoparticles for Biomarker Immobilization

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Christian Chapa Gonzalez ◽  
Carlos A. Martínez Pérez ◽  
Alejandro Martínez Martínez ◽  
Imelda Olivas Armendáriz ◽  
Oscar Zavala Tapia ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Separation ◽  
Magnetite Nanoparticles ◽  
Biomedical Applications ◽  
Polymeric Chain ◽  
Scfv Fragment ◽  
Enzyme Adsorption ◽  
Coated Nanoparticles ◽  
Detection Of Biomarkers ◽  
Biological Entities

Magnetic nanoparticles (MNPs) have great potential in biomedical applications because of their magnetic response offers the possibility to direct them to specific areas and target biological entities. Magnetic separation of biomolecules is one of the most important applications of MNPs because their versatility in detecting cancer biomarkers. However, the effectiveness of this method depends on many factors, including the type of functionalization onto MNPs. Therefore, in this study, magnetite nanoparticles have been developed in order to separate the 5′-nucleotidase enzyme (5eNT). The 5eNT is used as a bio-indicator for diagnosing diseases such as hepatic ischaemia, liver tumor, and hepatotoxic drugs damage. Magnetic nanoparticles were covered in a core/shell type with silica, aminosilane, and a double shell of silica-aminosilane. A ScFv (fragment antibody) and anti-CD73 antibody were attached to the coated nanoparticles in order to separate the enzyme. The magnetic separation of this enzyme with fragment antibody was found to be 28% higher than anti-CD73 antibody and the enzyme adsorption was improved with the double shell due to the increased length of the polymeric chain. Magnetite nanoparticles with a double shell (silica-aminosilane) were also found to be more sensitive than magnetite with a single shell in the detection of biomarkers.

Functionalized magnetic nanoparticles for biomedical applications

2015 ◽  
Vol 21 (42) ◽  
pp. 6038-6054 ◽  
Author(s):  
Dragoș Gudovan ◽  
Paul Balaure ◽  
Dan Mihăiescu ◽  
Adrian Fudulu ◽  
Bogdan Purcăreanu ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Biomedical Applications ◽  
Functionalized Magnetic Nanoparticles

scholarly journals Preparation of magnetic nanoparticles by one step synthesis with morphology of particles changed based on time of reaction and temperature treatment

2020 ◽  
Vol 16 (1) ◽  
pp. 1-10
Author(s):  
Tomáš Solný ◽  
Petr Ptáček ◽  
Tomáš Opravil ◽  
Lucie Dlabajová ◽  
Matěj Březina ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Temperature Treatment ◽  
One Step ◽  
Time Of Reaction

Simulated Clustering Dynamics of Colloidal Magnetic Nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Frederik Laust Durhuus ◽  
Lau Halkier Wandall ◽  
Mathias Hoeg Boisen ◽  
Mathias Kure ◽  
Marco Beleggia ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Self Assembly ◽  
Biomedical Applications ◽  
Magnetic Nanoparticle ◽  
Bottom Up ◽  
Novel Materials ◽  
Nanoparticle Clusters ◽  
Clustering Dynamics

Magnetically guided self-assembly of nanoparticles is a promising bottom-up method to fabricate novel materials and superstructures, such as, for example, magnetic nanoparticle clusters for biomedical applications. The existence of assembled...

scholarly journals Modulation of Crystallinity through Radiofrequency Electromagnetic Fields in PLLA/Magnetic Nanoparticles Composites: A Proof of Concept

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4300
Author(s):  
Marta Multigner ◽  
Irene Morales ◽  
Marta Muñoz ◽  
Victoria Bonache ◽  
Fernando Giacomone ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnetic Nanoparticles ◽  
Electromagnetic Fields ◽  
Biomedical Applications ◽  
Infrared Camera ◽  
Proof Of Concept ◽  
Scanning Calorimetry ◽  
Radiofrequency Electromagnetic Fields ◽  
Degradation Properties ◽  
Heat Released

To modulate the properties of degradable implants from outside of the human body represents a major challenge in the field of biomaterials. Polylactic acid is one of the most used polymers in biomedical applications, but it tends to lose its mechanical properties too quickly during degradation. In the present study, a way to reinforce poly-L lactic acid (PLLA) with magnetic nanoparticles (MNPs) that have the capacity to heat under radiofrequency electromagnetic fields (EMF) is proposed. As mechanical and degradation properties are related to the crystallinity of PLLA, the aim of the work was to explore the possibility of modifying the structure of the polymer through the heating of the reinforcing MNPs by EMF within the biological limit range f·H < 5·× 109 Am−1·s−1. Composites were prepared by dispersing MNPs under sonication in a solution of PLLA. The heat released by the MNPs was monitored by an infrared camera and changes in the polymer were analyzed with differential scanning calorimetry and nanoindentation techniques. The crystallinity, hardness, and elastic modulus of nanocomposites increase with EMF treatment.

Gd-Based Magnetic Nanoparticles for Biomedical Applications

2018 ◽  
pp. 137-155 ◽  
Author(s):  
Shane Harstad ◽  
Shivakumar Hunagund ◽  
Zoe Boekelheide ◽  
Zainab A. Hussein ◽  
Ahmed A. El-Gendy ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Biomedical Applications
Sign in / Sign up

Export Citation Format

Share Document