Recently I am researching about LEUKOCYTE ADHESION MOLECULE-1; IRON-OXIDE NANOPARTICLES; MAGNETIC-RESONANCE; SIALYL LEWIS(X); EXPRESSION; CANCER; CELLS; METASTASIS; DIAGNOSIS; EXTRAVASATION, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [81260334, 81760533, 81460452]. Published in DOVE MEDICAL PRESS LTD in ALBANY ,Authors: Liu, LJ; Liu, L; Li, Y; Huang, XX; Gu, DL; Wei, B; Su, DK; Jin, GQ. The CAS is 101-84-8. Through research, I have a further understanding and discovery of Diphenyl oxide. Safety of Diphenyl oxide
Purpose: We developed a contrast agent for targeting E-selectin expression. We detected the agent using magnetic resonance imaging (MRI) in vivo in nude mice that had undergone nasopharyngeal carcinoma (NPC) metastasis. Methods: Sialyl Lewis X (sLe(x)) was conjugated with ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles. Hydrodynamic size, polydispersity index, and zeta-potential of USPIO- polyethylene glycol (PEG) nanoparticles and USPIO-PEG-sLe x nanoparticles were measured. Component changes in nanoparticles of USPIO, USPIO-PEG, and USPIO-PEG-sLe(x) were analyzed by thermogravimetric analysis and Fourier-transform infrared spectroscopy. A model of NPC metastasis to inguinal lymph nodes in nude mice was used to investigate characteristics of the USPIO-PEG-sLe x nanoparticles in vivo. We investigated the ability of the T2* value, change in T2* value (Delta T2* value), and enhancement rate (ER) to assess accumulation of USPIO-PEG-sLe(x) nanoparticles quantitatively in mice of a metastasis group and control group. Four MRI scans were undertaken for each mouse. The first scan (t0) was done before administration of USPIO-PEGsLe x nanoparticles (0.1 mL) via the tail vein. The other scans were carried out at 0 (t1), 1 (t2), and 2 hours (t3) postinjection. The mean optical density was used to reflect E-selectin expression. Results: sLe(x) was labeled onto USPIO successfully. In vivo, there were significant interactions between the groups and time for T2* values after administration of USPIO-PEG-sLe(x) nanoparticles. Six parameters (T2* at t2, Delta T2* at t1, Delta T2* at t2, ER at t1, ER at t2, and ER at t3) were correlated with the mean optical density. Conclusion: USPIO-PEG-sLe(x) nanoparticles can be used to assess E-selectin expression quantitatively. Use of such molecular probes could enable detection of early metastasis of NPC, more accurate staging, and treatment monitoring.
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Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem