AbstractNanotechnology changed our understanding of physics and chemics and influenced the biomedical field. Iron oxide nanoparticles (IONs) are one of the first emerging biomedical applications of nanotechnology. The IONs are composed of iron oxide core exhibiting magnetism and coated with biocompatible molecules. The small size, strong magnetism, and biocompatibility of IONs facilitate the application of IONs in the medical imaging field. We listed several clinical available IONs including Resovist (Bayer Schering Pharma, Berlin, Germany) and Feridex intravenous (I.V.)/Endorem as magnetic resonance (MR) contrast agents for liver tumor detection. We also illustrated GastroMARK as a gastrointestinal contrast agent for MR imaging. Recently, IONs named Feraheme for treating iron-deficiency anemia have been approved by the Food and Drug Administration. Moreover, tumor ablation by IONs named NanoTherm has also been discussed. In addition to the clinical application, several potential biomedical applications of IONs including cancer-targeting capability by conjugating IONs with cancer-specific ligands, cell trafficking tools, or tumor ablation agents have also been discussed. With the growing awareness of nanotechnology, further application of IONs is still on the horizon that would shed light on biomedicine.

2020-09-01·Photodiagnosis and Photodynamic Therapy3区 · 医学

Trastuzumab conjugated porphyrin-superparamagnetic iron oxide nanoparticle: A potential PTT-MRI bimodal agent for herceptin positive breast cancer

3区 · 医学

Article

作者: Aziz, Azlan Abdul ; Khaniabadi, Bita Moradi ; Shahbazi-Gahrouei, Daryoush ; Jameel, Mahmood Subhi ; Mehrdel, Baharak ; Khaniabadi, Pegah Moradi ; Dheyab, Mohammed Ali

BACKGROUNDTheranostic agents can combine photosensitizers and contrast agents into a single unit for photothermal therapy (PTT) and magnetic resonance imaging (MRI). The possibility of treating and diagnosing malignant cancers without any ionizing radiation could become an option. This study investigates the theranostic potential of Fe₃O₄ nanoparticles (IONs) for the diagnosis and treatment of cancer by developing a single integrated nanoprobe.METHODSOleylamin-coated IONs (ION-Ol) were synthesized and surface of the IONs was modified using protoporphyrin (PP) and trastuzumab (TZ) to develop the TZ-conjugated SPION-porphyrin [ION-PP-TZ]. The structure, morphology, size, and cytotoxicity of all samples were investigated using Fourier-transform infrared spectroscopy (FT-IR), Transmission electron microscopy (TEM), X-ray powder diffraction (XRD), WST-1 assay, respectively. In addition to MRI and in vitro laser irradiation (808 nm, 200 mW) to determine the r₂ values and photothermal ablation.RESULTSThe sizes of monodispersed nanoparticles were measured in rang 5.74-7.17 nm. No cytotoxicity was observed after incubating MCF 7 cells under various Fe concentrations of nanoparticles and theranostic agents. The transverse relaxation time of the protoporphyrin conjugated to IONs (52.32 mM^-1s^-1) exceeded that of ION-Ol and TZ-conjugated ION-PP. In addition, the in vitro photothermal ablation of ION-PP-TZ revealed a 74 % MCF 7 cell reduction after 10 min of at the highest Fe concentration (1.00 mg Fe/mL).CONCLUSIONSIn summary, the water-soluble ION-PP-TZ is a promising bimodal agent for the diagnosis and treatment of human epidermal growth factor receptor 2-positive breast cancer cells using a T₂ MRI contrast agent and photothermal therapy.

2017-08-01·Acta Radiologica Open

Efficacy of oral contrast agents for upper gastrointestinal signal suppression in MRCP: A systematic review of the literature

Article

作者: Frisch, Anne ; Denecke, Timm ; Hamm, Bernd ; Walter, Thula C

Background Orally administered substances which suppress signals from gastrointestinal fluid can be used to enhance image quality in magnetic resonance cholangiopancreatography (MRCP). In daily practice, the available substances range from commercial products to regular viands such as fruit juices. Purpose To provide an overview on the significance of and the substances used as gastrointestinal fluid signal suppressors in MRCP. Material and Methods A systematic review of the existing literature was performed to evaluate the efficacy and efficiency of oral T2-signal suppressors in MRCP. Results Twenty-five publications on 16 different oral contrast media were identified. The most commonly used substances were ferumoxsil, ferric ammonium citrate, and pineapple juice. Twenty-three out of 25 publications supported the use of oral signal suppressors in MRCP. Advantages of oral signal suppressors include improved visualization of the pancreatobiliary ductal system, increased help with differential diagnoses, and higher detection rates of relevant diagnoses due to a reduction of overlaying signals. Conclusion The application of oral substances for gastrointestinal signal suppression in MRCP is recommendable. A variety of substances are used in daily routine with good but varying effectivity and patient tolerance.

100 项与结合胶体颗粒的硅聚合物相关的药物交易

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KEGG	Wiki	ATC	Drug Bank
D04175	-	V08CB01	DB09507

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研究	分期	人群特征	评价人数	分组	结果	评价	发布日期


31240 (ASCO2018)	N/A	-	200	super magnetic iron oxide (SPIO/magnetic probe system)	鹹廠網壓蓋網壓獵鬱齋(製鬱獵糧艱衊製製顧廠) = 餘廠觸鏇構糧積範構範膚願簾製蓋鬱鬱構壓築 (範顧齋襯窪蓋鑰選醖糧, 0.91 ~ 0.97)	积极	2018-06-01
				super magnetic iron oxide (RI and blue dye)	鹹廠網壓蓋網壓獵鬱齋(製鬱獵糧艱衊製製顧廠) = 簾簾範淵獵窪選壓鏇蓋膚願簾製蓋鬱鬱構壓築 (範顧齋襯窪蓋鑰選醖糧, 0.95 ~ 0.99)