Researchers at the Technion-Israel Institute of Technology have developed three drugs to remove excess iron from the brains of patients with neurodegenerative diseases. The presence of too much iron in the brain is a hallmark of such diseases. The drugs, VK-28, HLA-20 and M30, mop up the iron before it can trigger a "brain rust" chemical reaction where highly active oxygen particles destroy brain cells.
Professor Moussa Youdim of the Faculty of Medicine and his colleagues – Prof. Avraham Warshawsky (now deceased), Prof. Mati Fridkin and Ph.D. student Hailin Zheng from China – have received U.S. and worldwide patents on VK-28, HLA-20 and M30. Youdim says the three drugs could treat and perhaps prevent a range of diseases including Parkinson’s, Alzheimer’s, Huntington’s and amyotrophic lateral sclerosis (ALS).
Unlike other drugs currently used against these disorders – which attempt to replace the functions lost by dying neurons – these drugs halt the neuron destruction itself. Normally, iron is a helpful partner in the body’s metabolism, shuttling electrons between molecules in chemical reactions that break down fats, carbohydrates and proteins, and provide energy to cells. Because iron is so reactive, the body usually keeps tight control over the amount and activity of iron circulating in the brain and other organs.
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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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