Mayo Clinic researchers have proven for the first time that cells produced by the bone marrow can form new heart-muscle cells in adults, providing an important boost to research that could enable the body to replace heart muscle damaged by heart attack. The findings are now available online and will be published tomorrow in Circulation: Journal of the American Heart Association.
"Until recently, the heart has been seen as an organ that cannot be healed," says Noel Caplice, M.D., the Mayo Clinic cardiologist who led the study. "Heart-attack damage to the myocardium, or heart muscle, was considered irreversible. This study points the way to a process that could lead to heart repair."
The researchers studied four female patients with leukemia who had survived 35 to 600 days after receiving bone-marrow transplants from male donors. Heart tissue samples were examined at autopsy using special staining techniques, which showed that a small portion of the heart-muscle cells, or cardiomyocytes, contained male genetic material and had therefore originated from the donor marrow. Of the more than 80,000 cell nuclei examined, about 1 in 425 (.23 percent) contained the y chromosome.
Lee Aase | EurekAlert!
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The world's highest gain high power laser amplifier - by many orders of magnitude - has been developed in research led at the University of Strathclyde.
The researchers demonstrated the feasibility of using plasma to amplify short laser pulses of picojoule-level energy up to 100 millijoules, which is a 'gain'...
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
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Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
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An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
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