ESC Congress 2003: Stem cells – A tool for mending broken hearts?
We have shown that stem cell injections by catheters into diseased hearts are feasible and safe, even for very sick patients. Moreover, the results suggested strongly a potential ability of these cells to regenerate the arteries of the heart (called coronary arteries), and this regeneration improved the mechanical function of the heart, improving the heart failure condition of these patients. Since heart failure is a more aggressive killer than most cancers, and the fact that cardiovascular diseases are the leading cause of mortality around the world, this could be a beginning of a “new era” in cardiovascular therapy.
Our study was carried out at Pró-Cardíaco Hospital (granted by the Filantropic Foundation of Teaching and Research of Pró-Cardíaco Hospital - PROCEP), in Rio de Janeiro, with a partnership with the Federal University of Rio de Janeiro and Texas Heart Institute. The experimental models were developed by the Federal University (granted by the Ministry of Science and Technology) and the injection system used to introduce the cells into the heart was developed by Johnson&Johnson, and tested in Houston.
Camilla Dormer | alfa
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Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
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Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
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A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
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