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- W2061776276 abstract "The functionality of ultrasound in early cancer detection is limited because of its relatively low contrast resolution. Because it has a high degree of echogenicity, a microbubble contrast agent is often used to overcome this intrinsic limitation of imaging at low-contrast resolution. A targeted and drug-loaded microbubble contrast agent for simultaneous diagnosis and therapy has recently been investigated. However, no optimized theragnosis ultrasound microbubbles have been developed. Paclitaxel (PTX)-encapsulating human serum albumin nanoparticles (PTX-HSA-NPs) were conjugated onto an ultrasound microbubbles (PTX-HSA-NPs-MBs) fabricated in the laboratory to result in a narrow size distribution (1.7 ± 0.7 μm) and an optimal resonance frequency of 3 MHz. After intravenous injection of HSA-NPs-MBs, echogenicity in the tumor xenografted with breast cancer MCF-7 cells was significantly enhanced, showing the possibility of early cancer diagnosis. Mice injected with PTX-HSA-NPs-MBs showed higher survival rates in comparison with control groups, demonstrating the possibility of theragnosis. In the present study, the conjugation of PTX-HSA-NPs onto the ultrasound microbubbles simultaneously provided (1) enhanced ultrasound signal generation, (2) sufficient drug-loading capacity, (3) ability to deliver drugs to a preferred tumor site, and (4) increased stability in blood circulation." @default.
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- W2061776276 date "2015-07-01" @default.
- W2061776276 modified "2023-09-23" @default.
- W2061776276 title "Therapeutic Ultrasound Contrast Agents for the Enhancement of Tumor Diagnosis and Tumor Therapy" @default.
- W2061776276 doi "https://doi.org/10.1166/jbn.2015.2056" @default.
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