ESC Congress 2003
Adult heart cells have limited regenerative capacity and therefore any significant cell loss, such as occurs during a heart attack, is mostly irreversible and may lead to the development of progressive heart failure. Congestive heart failure is one of the leading causes of morbidity and mortality in the western world, placing a significant economic burden on the health care systems. Despite advances in the medical, interventional, and surgical therapeutic measures, the prognosis for these patients remains unacceptably poor. With a chronic lack of donors limiting the number of patients who can benefit from heart transplantations, development of new therapeutic paradigms for heart failure has become imperative
A potential novel therapeutic approach for this situation may be to replace the dysfunctional or scarred tissue with new myogenic cells. However, this cell replacement strategy has been hampered by the lack of cell sources for human heart cells and by the lack of direct evidence for functional integration of donor and host tissues. We describe the establishment of a novel source of cardiomyocytes for cell therapy, the human embryonic stem cell differentiating system. Our results demonstrate that these unique cells can differentiate in the dish to generate spontaneously contracting tissue with the structural and functional properties of cardiac cells. We also demonstrate that the generated cardiac tissue can integrate in vitro with preexisting cardiac cultures as to form a single functional unit.
Camilla Dormer | alfa
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The building blocks of matter in our universe were formed in the first 10 microseconds of its existence, according to the currently accepted scientific picture. After the Big Bang about 13.7 billion years ago, matter consisted mainly of quarks and gluons, two types of elementary particles whose interactions are governed by quantum chromodynamics (QCD), the theory of strong interaction. In the early universe, these particles moved (nearly) freely in a quark-gluon plasma.
This is a joint press release of University Muenster and Heidelberg as well as the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt.
Then, in a phase transition, they combined and formed hadrons, among them the building blocks of atomic nuclei, protons and neutrons. In the current issue of...
Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem.
"It is not enough simply to bring more light into the cell," says Christiane Becker. Such surface structures can even ultimately reduce the efficiency by...
A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.
Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the...
Scientists have succeeded in observing the first long-distance transfer of information in a magnetic group of materials known as antiferromagnets.
An international team of researchers has mapped Nemo's genome, providing the research community with an invaluable resource to decode the response of fish to...
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