Now showing items 1-5 of 5

    • A New High-Performance Gadonanotube-Polymer Hybrid Material for Stem Cell Labeling and Tracking by MRI 

      Moghaddam, Sakineh E.; Hernández-Rivera, Mayra; Zaibaq, Nicholas G.; Ajala, Afis; Cabreira-Hansen, Maria da Graça; (2018)
      A gentle, rapid method has been developed to introduce a polyacrylic acid (PAA) polymer coating on the surface of gadonanotubes (GNTs) which significantly increases their dispersibility in water without the need of a surfactant. As a result, the polymer, with its many carboxylic acid groups, coats the surface of the GNTs to form a new GNT-polymer ...
    • Bismuth@US-tubes as a potential contrast agent for X-ray imaging applications 

      (2013)
      The encapsulation of bismuth as BiOCl/Bi2O3 within ultra-short (ca. 50 nm) single-walled carbon nanocapsules (US-tubes) has been achieved. The Bi@US-tubes have been characterized by high-resolution transmission electron microscopy (HR-TEM), energy-dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy ...
    • Labeling Stem Cells with a New Hybrid Bismuth/Carbon Nanotube Contrast Agent for X-Ray Imaging 

      Hernández-Rivera, Mayra; Cho, Stephen Y.; Moghaddam, Sakineh E.; Cheong, Benjamin Y.; Cabreira-Hansen, Maria da Graça; (2019)
      The poor retention and survival of cells after transplantation to solid tissue represent a major obstacle for the effectiveness of stem cell-based therapies. The ability to track stem cells in vivo can lead to a better understanding of the biodistribution of transplanted cells, in addition to improving the analysis of stem cell therapies’ outcomes. ...
    • Surfactant-free Gd3+-ion-containing carbon nanotube MRI contrast agents for stem cell labeling 

      (2015)
      There is an ever increasing interest in developing new stem cell therapies. However, imaging and tracking stem cells in vivo after transplantation remains a serious challenge. In this work, we report new, functionalized and high-performance Gd3+-ion-containing ultra-short carbon nanotube (US-tube) MRI contrast agent (CA) materials which are ...
    • The use of gadolinium-carbon nanostructures to magnetically enhance stem cell retention for cellular cardiomyoplasty 

      (2014)
      In this work, the effectiveness of using Gadonanotubes (GNTs) with an external magnetic field to improve retention of transplanted adult mesenchymal stem cells (MSCs) during cellular cardiomyoplasty was evaluated. As a high-performance T1-weighted magnetic resonance imaging (MRI) cell tracking label, the GNTs are gadolinium-loaded carbon nanotube ...