Kuiwon Choi

Ick Chan Kwon6
Kwangmeyung Kim6
6Ick Chan Kwon
6Kwangmeyung Kim
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  • Ji Young Yhee, Sun Ah Kim, Heebeom Koo, Sohee Son, Ju Hee Ryu, In-Chan Youn +3 others
  • 2012
Cathepsin B and matrix metalloproteinase (MMP) play key roles in tumor progression by controlled degradation of extracellular matrix. Consequently, these proteases have been attracted in cancer research, and many imaging probes utilizing these proteases have been developed. Our groups developed cathepsin B and MMP imaging nanoprobes based on polymer(More)
Since computed tomography (CT) was developed and its resolution, sensitivity, and scan speed rapidly improved, the use of CT in the diagnosis of hepatic disease has been evaluated by various investigators. [1] In particular, liver-specific X-ray CT imaging has attracted much attention in cancer diagnosis and cancer treatment because liver metastases are a(More)
Cutaneous afferent activities recorded by a nerve cuff electrode have been used to detect the stance phase in a functional electrical stimulation system for foot drop correction. However, the implantation procedure was difficult, as the cuff electrode had to be located on the distal branches of a multi-fascicular nerve to exclude muscle afferent and(More)
The application of gold nanoparticles (AuNPs) in biomedical field was limited due to the low stability in the biological condition. Herein, to enhance stability and tumor targeting ability of AuNPs, their surface was modified with biocompatible glycol chitosan (GC) and the in vivo biodistribution of GC coated AuNPs (GC-AuNPs) were studied through computed(More)
The exposure of phosphatidylserine (PS) molecules from the inner to the outer leaflet of the plasma membrane has been recognized as a well-defined molecular epitope of cells undergoing apoptosis. Examination and monitoring of PS exposure is an extensively used molecular marker in non-invasive apoptosis imaging under a variety of clinical conditions,(More)
Cell labeling and tracking are important processes in understanding biologic mechanisms and the therapeutic effect of inoculated cells in vivo. Numerous attempts have been made to label and track inoculated cells in vivo; however, these methods have limitations as a result of their biological effects, including secondary phagocytosis of macrophages and(More)
Cuff electrodes are effective for chronic electroneurogram (ENG) recording while minimizing nerve damage. However, the ENG signals are usually contaminated by electromyogram (EMG) activity from the surrounding muscles, stimulus artifacts produced by the electrical stimulation and noise generated in the first stage of the neural signal amplifier. This paper(More)
The current study presents an organotypic rat midbrain slice culture that served as a consistent and informative framework, where the STN neurons and their interconnectivity were closely examined with respect to electrophysiological and pharmacological properties. From multi-electrode array recordings, it was found that the majority of STN neurons(More)
While current imaging modalities, such as magnetic resonance imaging (MRI), computed tomography, and positron emission tomography, play an important role in detecting tumors in the body, no single-modality imaging possesses all the functions needed for a complete diagnostic imaging, such as spatial resolution, signal sensitivity, and tissue penetration(More)