Quantitative Recovery of Magnetic Nanoparticles from Flowing Blood: Trace Analysis and the Role of Magnetization

2013 ◽  
Vol 23 (39) ◽  
pp. 4888-4896 ◽  
Author(s):  
Christoph M. Schumacher ◽  
Inge K. Herrmann ◽  
Stephanie B. Bubenhofer ◽  
Sabrina Gschwind ◽  
Ann-Marie Hirt ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Trace Analysis ◽  
Flowing Blood ◽  
Quantitative Recovery

Magnetic Nanoparticles: Quantitative Recovery of Magnetic Nanoparticles from Flowing Blood: Trace Analysis and the Role of Magnetization (Adv. Funct. Mater. 39/2013)

2013 ◽  
Vol 23 (39) ◽  
pp. 4873-4873
Author(s):  
Christoph M. Schumacher ◽  
Inge K. Herrmann ◽  
Stephanie B. Bubenhofer ◽  
Sabrina Gschwind ◽  
Ann-Marie Hirt ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Trace Analysis ◽  
Flowing Blood ◽  
Quantitative Recovery

Quantificationofwallshearstressinlargebloodvesselsusingmagneticresonanceimaging

2019 ◽  
Author(s):  
  Нина Юрьевна Шокина ◽  
  Габриэль Тешнер ◽  
  Андреас Бауэр ◽  
  Камерон Тропеа ◽  
  Херберт Эггер ◽  
...  
Keyword(s):  
Cardiovascular Mri ◽  
Resonance Imaging ◽  
Noninvasive Measurements ◽  
Potential Biomarker ◽  
Flowing Blood ◽  
Fully Automatic ◽  
Nonlinear Regression Method ◽  
Magnetic Resonance Imaging Mri ◽  
Blood Flow Velocities

Напряжение сдвига на стенке количественно определяет силу трения течения крови о стенки сосудов. Магнитнорезонансная томография (МРТ) позволяет проводить неинвазивные измерения скорости течения крови, которая требуется для вычисления напряжения сдвига на стенке. В статье представлено введение в квантификацию напряжения сдвига на стенках больших кровеносных сосудов с помощью МРТ. Рассмотрены роль напряжения сдвига на стенке как потенциального биомаркера сердечнососудистых заболеваний, сердечнососудистая МРТ, методы квантификации напряжения на стенке с помощью МРТ, их точность и валидация. В качестве примера представлен универсальный метод нелинейной регрессии для квантификации напряжения сдвига на стенке с помощью МРТ для полностью развившихся турбулентных течений в трубах. Новый, полностью автоматический и быстрый локальный метод даёт точные оценки независимо от пространственного разрешения и может служить надёжным эталонным методом для валидации более обобщённых методов оценки напряжения сдвига на стенке перед их клиническим применением. Wall shear stress (WSS) quantifies the frictional force that flowing blood exerts on a vessel wall. Magnetic Resonance Imaging (MRI) enables noninvasive measurements of blood flow velocities that are needed for WSS computation. An introduction into MRIbased WSS quantification in large blood vessels is presented. The possible role of WSS as a potential biomarker in cardiovascular diseases, cardiovascular MRI, MRbased WSS quantification methods, and their accuracy and validation are considered. As an example, the generic nonlinear regression method for MRIderived WSS quantification in fully developed turbulent stationary pipe flows is presented. The new method is a fully automatic and fast local WSS estimator, which produces accurate estimates independent from the spatial resolution of the measurement and may serve as a reliable reference for validation of more generic WSS estimators prior to their clinical applications.

ROLE OF NEUTROPHILS IN THE DELIVERY OF NANOPARTICLE INTO THE TUMOR

2020 ◽  
pp. 127-129
Author(s):  
V. Naumenko ◽  
V. Chekhonin
Keyword(s):  
Magnetic Nanoparticles ◽  
Intravital Microscopy ◽  
Tumor Tissue ◽  
Neutrophil Extravasation

Mechanisms of liposomes and magnetic nanoparticles accumulation in the tumor tissue were shown to be associated with neutrophils. The intravital microscopy allowed to visualize the transfer of magnetic nanoparticles by neutrophils that captured these nanoparticles, while liposomes accumulate in the tissue via micro- and macroleakages appearing at sites of neutrophil extravasation.

The role of magnetic nanoparticles (MNP) as reducing agents in an MNP-supported Pd–catalyst for the reductive homocoupling of aryl halides

2012 ◽  
Vol 90 (1) ◽  
pp. 138-144 ◽  
Author(s):  
Jie Zheng ◽  
Shengyue Lin ◽  
Bi-Wang Jiang ◽  
Todd B. Marder ◽  
Zhen Yang
Keyword(s):  
Magnetic Nanoparticles ◽  
Aryl Halide ◽  
Reducing Power ◽  
Cross Coupling ◽  
Reducing Agent ◽  
Aryl Halides ◽  
Pd Catalyst ◽  
Reductive Homocoupling ◽  
Supported Pd

A palladium pincer catalyst grafted onto the surface of magnetic nanoparticles (MNPs) has been developed. This material effectively catalyzes the reductive homocoupling of various aryl halide substrates, with the MNP support acting as the reducing agent. The catalyst can be recycled up to five times in the absence of additional reducing agent to give almost quantitative yields of biaryl homocoupling products. After the reducing power of the MNP has been depleted, the supported Pd complex remains an effective catalyst for Suzuki–Miyaura cross-coupling.

scholarly journals Low molecular weight glycerol derived coatings on magnetic nanoparticles: role of initiator, temperature, rate of monomer addition, enhanced biocompatibility and stability

RSC Advances ◽  
2021 ◽  
Vol 11 (63) ◽  
pp. 40140-40147
Author(s):  
Simon Doswald ◽  
Wendelin Jan Stark
Keyword(s):  
Molecular Weight ◽  
Magnetic Nanoparticles ◽  
Low Molecular Weight ◽  
Coating Process ◽  
Highly Efficient ◽  
Temperature Rate

A highly efficient coating process of magnetic nanoparticles with hyperbranched polyglycidol was investigated and the resulting particles were tested towards their biocompatible capabilities.

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